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GOVERNMENT OF INDIA

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FORELECTRICAL WORKSPART • V (WET RISER &SPRINKLER SYSTEMS)

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EngineeringExcellence

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PUBLISHED BYDIRECTOR GENERAL (WORKS) CPWD, NIRMAN BHAWAN, NEW DELHI-110011

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FOREWORDCentral Public Works Department is responsible for the design, construction and

maintenance of a large number of buildings of the Govt. of India. With the scarcity of land forconstruction in urban areas, multi-storeyed construction of buildings is on the increase all overIndia. Mostof these buildings, are provided with extensive E&M and air conditioning servicesand are prone to fire risks. The fire alarm system and fire fighting arrangements are, therefore,essential and necessary provisions for them are being made in designs of multi-storeyed buildingsconstructed by the department.

Water being cheapest and easily available medium, the water based fire fighting systemsare considered as the foremost for fighting the fire. CPWD thus drafted the specifications forwater based fixed type fire fighting installations for the building for the first time in 1985.

Since then, there have been major changes in the water based fire fighting systems withthe introduction of sprinkler systems for basement and in auditorium. National Building Code

.- . 2005 has introduced additional safety measures in providing fire fighting systems in mUlti-storeyednon-residential buildings. This has resulted in provision of sprinkler systems almost in all non-residential buildings which are more than 15 meter in height.

Thus the need has been felt to modify the specifications for fixed type fire fighting installationsto include sprinkler systems and also to update the various provisions and to bring thespecifications on par with the modern technical developments and to incorporate the revisions.:> .made in the Indian Standards over the time period; Thus the specifications were re-draftedby a committee of officers consisting Shri S K Singhal, CE{E), Shri N Nagarajan, CE{E),Shri V K Mittal, Shri J M Paswan and Shri A P Joshi, SEs{E).

Specifications drafted by the committee were reviewed by the sub committee consisting ofShri A C Suri, Shri R K Singhal and Shri Surinder Singh, SEs{E) to ensure that all modernconcepts have been incorporated and that the specifications are brought in accordance withthe provisions of National Building Code - 2005.

The Specifications incorporate mainly the following:

• Only water based fixed fire fighting installations have been covered.

• General conditions are in line with the specifications for other similar works.

• The specifications are more informative. Details of various components of fire fightingsystem alongwith their functions have been provided.

• Architectural and structural requirement for fire fighting system have been provided in aseparate chapter.

• Planning, designing and coordination with various agencies have been provided in aseparate chapter.

• Complete guidelines and importance of maintenance have been covered.

• Separate chapter on sprinkler has been included which covers concept, design, selection,installation, testing and commissioning.

• Specimen NIT has been included for convenience of inviting tenders.

• Provides complete information on concept, design, installation, testing, commissioningand maintenance of fire fighting system which will be very useful for our field officershaving little or no exposure to such system.

I acknowledge the efforts put in by members of the Specification Committee under thechairmanship of Sh K K Jaswal, CE(E) in making the present specification technically update,modem and user friendly. I also acknowledge the efforts of Sh N Nagarajan, CE(E) DR, convenorand Sh M K Verma, SE(E), Member Secretary.

Suggestions for modifications as well as errors and omissions may be sent toSE(E) S&S,office of the Chief Engineer (E) DR, CPWD, New Delhi.

In case of any discrepancy between English and Hindi versions, the English version shallbe held valid.

Place: New Delhi.Dated: 08.09.2006

(A. Chakrabarti)Director General (Works)

CPWD, New Delhi

REFERENCES OF AMENDMENTS

51.No. Reference under which issued Chapter No. Item No. Page

/'

,

REFERENCES OF AMENDMENTS

81. No. Reference under which issued Chapter No. Item No. Page

/'

.CONTENTS

S.No. Description Page No.

1 Chapter 1 General 1-8

2 Chapter :2 System and system Requirements 9-15

3 Chapter 3 Architectural and structural Requirements 16-19

4 Chapter 4 Planning, Designing and Coordination 20-24

5 Chapter 5 Fire Pumps 25-27

6· Chapter 6 Diesel Engine for Fire Pumps 28-31

7 Chapter 7 Pipe Work 32-37

8 Chapter 8 Fire Fighting Accessories 38-41

9 Chapter 9 Automatic Sprinkler System 42-51

10 Chapter 10 Electrical works 52-56

11 Chapter 11 Installation, Testing and Commissioning 57-60

12 Appendix-A Requirement of Fire Fighting Installation 61-65

13 Appendix-B Terminology 66-67

14 Appendix-C Maintenance and Operation of Wet RiserSystem 68-70

15 Appendix-D Maintenance of Automatic Sprinkler System 71-72

16 Appendix-E List of Relevant Indian Standards 73-74

17 Appendix-F Table 17 Plate flanges for welding. 75

18 Figures (1to 15) 76-90

19 Specimen Draft NIT 91

(i) Press Notification 92

(ii) Additional Conditions 93-96

(iii) Introduction & Scheme 97

(iv) Schedule Of Work 98-113

(v) Acceptable makes. 114

(vi) Schedule of Technical Particulars 115

/

1.1

1.1.1

1.1.1.1

1.1.2

1.1.3

1.1.4

1.2

. CHAPTER-1

GENERAL

INTRODUCTION

Scope

These specifications cover water based fixed fire fighting installations described inPara 2.2.

Related DocumentsThese General Specifications shall be read in conjunctionwith the conditions of contract,tender specifications, schedule of work, drawings and other documents connectedwith the work. In the event of any discrepancy between these specifications andgeneral conditions of contract and specification, the later shall over ride the former.

TerminologyThe definition of terms used in these specifications shall be in accordance with relevantIS. Some of the commonly used terms are defined in Appendix 'B'.

Site InformationThe tenderer should, in his own interest, visit the site and familiarise himself with thesite conditions before tendering. For any clarification, tenderer may discuss with theEngineer-in-Charge.

CONFORMITY WITH STATUTORY ACTS, RULES, STANDARDS AND CODES

(i) All components shall conform to relevant Indian Standard Specifications, whereverexisting, amended to date. A list of such standards is appended in Appendix 'E'.

(ii) All electrical works shall be carried out in accordance with the provisions ofIndian Electricity Act, 2003 and Indian Electricity Rules, 1-956amended to date.They shall also conform to CPWD General Specifications for Electrical works,Part-I: Internal, 2005, Part-II: External, 1994 and Part IV (Sub-station)1982,amended to date.

1.3 SAFETY CODES AND LABOUR REGULATIONS

(i) In respect of all labour employed directly or indirectly on the work for theperformance of the fire fighting contractor's part of work, the contractor at hisown expense, will arrange for the safety provisions as per the statutory provisions,B.I.S recommendations, factory act, workman's compensation act, CPWD codeand instructions issued from time to time. Failure to provide such safety

(1)

requirements would make the tenderer liable for penalty for Rs. 200/- for eachviolation. In addition the Engineer-in-charge, shall be at liberty to makearrangements and provide facilities as aforesaid and recover the cost incurredthereon from the contractor.

(ii) The contractor shall provide necessary barriers, warning signals and other safetymeasures while laying pipelines, cables etc. or wherever necessary so as toavoid accident. He shall also indemnify CPWD against claims for compensationarising out of negligence in this respect. Contractor shall be liable, in accordancewith the Indian Law and Regulations for any accident occurring due to any cause.The department shall not be responsible for any accident occurred or damageincurred or claims arising there from during the execution of work. The contractorshall also provide all insurance includingthird party insurance as may be necessaryto cover the risk. No extra payment would be made to the contractor due to theabove provisions thereof.

1.4 WORKS TO BE ARRANGED BY THE DEPARTMENT

Unless otherwise specified in the tender documents, the following works shall bearranged by the Department:

(i) Space for accommodating all the equipments and components involved in thework,

(ii) Power supply, Water supply and Drain points as per para 1.6,

(iii) Masonry ducts within and outside the building for carrying pipe lines and cableswherever specified.

(iv) Under ground and terrace tanks.

1.5 WORKS TO BE DONE BY THE CONTRACTOR

Unless otherwise mentioned in the tender documents, the following works shall bedone by the contractor and therefore, their cost shall be deemed to be included in theirtendered cost- whether specifically indicated in the schedule of work or not: -

(i) Foundations for equipments including foundation bolts and vibration isolationspring/pads,

(ii) Suspenders, brackets and floor/ wall supports for suspending/supporting pipes.

(iii) Suspenders and/or cable trays for laying the cables,

(iv) Excavation and refilling of trenches in soil wherever the pipes are to be laiddirectly in ground, including necessary base treatment and supports.

(v) Sealing of all floor slab/wall openings provided by the Department or made by thecontractor for pipes and cables, from fire safety point of view, after laying of thesame.

(2)

(vi) Painting of all exposed metal surfaces of equipments and components withappropriate colour as per para 1.13.

(vii) Making openings in the walls/ floors/ slabs or modification in the existing openingswherever provided for carrying pipe line, cables etc.

(viii) All electrical works including cable/wires, earthing etc. beyond power supply madeavailable by the department.

(ix) Making good all damages caused to the structure during installation .and restoringthe same to their original finish.

~(x) Approval from local fire authorities as may be required as per local bye-laws.

(The contractor's responsibility shall be limited to the work executed by him.)

1.6 POWERSUPPLY,WATER SUPPLYAND DRAINAGE

1.6.1 Power Supply

(i) Unless otherwise specified, 3 phase, 415 volts, 50 Hz power supply (5 KW) shallbe provided by the department free of charge to the contractor at one point forinstallation at site. Termination switchgear however, shall be provided by thecontractor. Further extension if required shall be done by the contractor.

'\

(ii) (a) The power supply for testing and commissioning of the complete installationshall be made available by the Department free of charge to the contractor.For this purpose, the power supply shall be given at the main incomer unitof the electrical panel to be provided by the contractor. The termination ofthis feeder in the main incomer unit shall be the responsibilityof the contractorand nothing extra shall be paid on this account.

(b) Unless otherwise specified in the contract, further power distribution to thevarious equipments shall be done by the contractor.

(iii) Where the power supply has to be arranged by the Department at more than onepoint as per the terms of the contract, the termination of all such power feedersin the incomer of respective control panels to be provided by the contactor shallbe the responsibility of the contractor and nothing extra shall be paid on thisaccount.

(iv) The contractor shall use the power supply only for the bonafled use of the work.No major fabrication work shall be done at site. Power shall be used only forwelding/cutting works. The power supply shall be disconnected in case of suchdefault and the contractor shall then have to arrange the required power supplyat his cost.

(3)

,1.6.2 Water Supply

Water supply shall be made available to the contractor by the Department free ofcharge at only one point for installation. Further extension if required shall be done bythe contractor at his cost.

1.6.3 Drainage

(i) Drain traps in pump room shall be arranged by. the department.(ii) Piping Connections from the equipment to the drain trap shall be done by the

contractor. These items of work shall be measured and paid as per contract.

1.7 MACHINERY FOR ERECTION

All tools and tackles required for unloading I handling of equipments and materials atsite, their assembly, erection, testing and commissioning shall be the responsibility ofthe contractor.

1.8 COMPLETENESS OF THE TENDER, SUBMISSION OF PROGRAMME,APPROVAL OF DRAWINGS AND COMMENCEMENT OF WORK

(i) Completeness of the tender:-All sundry equipments, fittings, assemblies, accessories, hardware items,foundation bolts, supports, termination lugs for electrical connections, cableglands, junction boxes and all other items which are useful and necessary forproper assembly and efficient working of the various equipments and componentsof the work shall be deemed to have been included in the tender, irrespective ofthe fact whether such items are specifically mentioned in the tender or not.

(ii) Submission of programme:-Within fifteen days from the date of receipt of the letter of award, the successfultenderer shall submit his programme for submission of drawings, supply ofequipment, installation, testing, commissioning and handing over of the installationto the Engineer-in-Charge. This programme shall be framed keeping in view thebuilding progress and the Milestones fixed in Schedule 'F' Clause-5 of GeneralConditions of Contract. Items like piping etc. that directly affect the building progressshall be given priority. Hose pipes, branch pipes, first aid hose reel pipes shallbe supplied just before commissioning the-system.

(iii) Submission of DrawingsThe contractor shall submit the drawings to the Engineer-in-Charge as per para1.17.2 for approval before start of work.

(iv) Commencement of WorkThe contractor shall commence work as soon as the drawings submitted by himare approved either in full or in part as the case may be.

(4)

1.9 DISPATCHOF MATERIALSTO SITE AND THEIR SAFE CUSTODY

The contractor shall dispatch materials to site in consultation with the Engineer-in-Charge. Suitable lockable storage accommodation shall be made available free ofcharge temporarily. Watch and ward however, shall be the responsibility of contractor.Programme of dispatch of material shall be framed keeping in view the building progress.Safe custody of all machinery and equipment supplied by the contractor shall be theresponsibility of the contractor till final taking over by the department.

1.10 CO-ORDINATIONWITH OTHERAGENCIES

The contractor shall co-ordinate with all other agencies involved at the site of work sothat the work of other agencies is not hampered due to delay in his work. Piping,cabling or any other work, which directly affect the progress of work of other agencies,shall be given priority.

1.11 QUALITYOF MATERIALSAND WORKMANSHIP

(i) The components of the installation shall be of such design so as to satisfactorilyfunction under all conditions of operation.

(ii) The entire work of manufacture/fabrication, assembly and installation shall conformto sound engineering practice.

(iii) All equipments and materials to be used in work shall be manufactured in factoriesof good repute having excellent track record of quality manufacturing, performanceand proper after sales service.

1.12 CARE OF THE BUILDING

Care shall be taken by the contractor during execution of the work to avoid damageto the building. He shall be responsible for repairing all such damages and restoringthe same to the original finish at his cost. He shall also remove all unwanted and wastematerials arising out of the installation from the site of work from time to time.

1.13 COLOUR SCHEME FOR THE EQUIPMENTAND COMPONENTS.

1.13.1 The entire metal work above ground level shall be painted with red colour shadeNo. 536 of IS: 5.

1.13.2 Pump, motor and engine shall be painted with red colour shade No. 536 of IS:5.

1.14 INSPECTIONAND TESTING

1.14.1 Initial Inspection and testing

(i) Initial inspection of materials and equipments at manufacturer's works may bedone by the Engineer-in-Charge or his representative. For item! equipment requiringinitial inspection at manufacturer's works, the contractor will intimate the date of

(5)

testing of equiprnents at the manufacturer's works before dispatch. The contractorshall give sufficient advance notice regarding the dates proposed for such tests'to the department's representative(s) to facilitate his presence during testing. TheEngineer-in-charge at his discretion may witness such testing. Equipments willbe inspected at the manufacturer/ authorised dealer's premises, before dispatchto the site by the contractor.

(ii) The department also reserves the right to inspect the fabrication job at factoryand the successful tenderer has to make arrangements for the same.

(iii) The materials duly inspectedby Engineer-in-Chargeor his authorised representativeshall be dispatched to site by the contractor.

(iv) No additional payment shall be made to the contractor for initial inspection/testingat the manufacturer's works by the representative of the Engineer-in-Charge.However, the department will bear the expenses of its representative deputed forcarrying out initial inspection/testing.

1.14.2 Final Inspection and Testing

Final Inspection and testing will be done by the Engineer-in-Charge or his representativeas per details indicated in Chapter-11.

The installation will be offered for inspection by local bodies (Chief Fire Officer). Thecontractor or his representative shall attend such inspection of the Chief Fire Officer,extend all test facilities as are considered necessary, rectify and comply with allobservations of the Chief Fire Officer which are part of the agreement and arrange forobtaining necessary clearance certificate in favour of the department. In case thecontractor fails to attend the inspection and make desired facilities available duringinspection, the department reserves the right to provide the same at the risk and costof the contractor and impose penalty for the same. The installation will be acceptedby the department only after receiving clearance from Chief Fire Officer for the workexecuted by the contractor under the agreement.

1.14.3 Safety Measures

All equipments shall incorporate suitable safety provisions to ensure safety of theoperating personnel at all times. The initial and final inspection reports shall bring outexplicitly the safety provisions incorporated in each equipment.

1.15 GUARANTEE

(i) The contractor shall guarantee the complete system to provide the specified flowand pressure under all conditions and outlets.

(ii) All equipments shall be guaranteed for a period of 12 months from the date ofacceptance and taking over of the installation by the Department againstunsatisfactory performance and/or breakdown due to defective design, material,manufacture, workmanship or installation. The equipment or component or anypart thereof so found defective during the guarantee period shall be repaired or

(6)

replaced free of. cost to the satisfaction of the Engineer-in-charge. In case it isfelt by the department that undue delay is being caused by the contractor in doing.this, the same will be got done by the department at the risk and cost of thecontractor. The decision of Engineer-in-charge in this regard shall be final.

1.16 PAYMENT TERMS

1.16.1 The following percentage of contract rates shall be payable against the stages of workshown herein:

Stage of work Machinery and Equipment All other(Pumps and Electrical Panel) items

After initial inspection(wherever specified) anddelivery at site in goodcondition on pro-rata basis

liOn completion of pro-rata installationIliOn testing, commissioning and

handing over.

70%20 %

10 % 10 %

1.17 TENDER DRAWINGS, DRAWINGS FOR APPROVAL AND COMPLETIONDRAWINGS

1.17.1 Tender Drawings

The drawings appended with the tender documents are intended to show the areasallotted for various equipments, tentative pipe routes. The equipments offered shall besuitable for installation in the spaces shown in these drawings .

.~1.17.2 Drawings for approval on award of the work

The contractor shall prepare and submit following drawings and get them approvedfrom the Engineer-in-charge before the start of the work. The approval of drawingshowever does not absolve the contractor of his responsibility to supply the equipments/materials as per agreement. In case of any contradiction between the approved drawingsand agreement the decision of the Engineer-in-Charge shall be final and binding on thecontractor.

(a) Layout drawings of the equipments to be installed in pump room and terrace.

(b) Drawings showing the details of erection of entire equipments including theirfoundations.

(c) Plumbing drawings showing the layout of entire piping, dia and length of pipes,·hydrant, air vessel, valves and isometric drawings showing connections to variousequipment.

(d) Sprinkler drawing indicating layout and sizes of pipe, location of valves, sprinklersetc.

(7)

(e) Electrical wiring diagrams for all electrical equipments and controls including thesizes and capacities of the various' cables and equipments,

(f) Dimensioned drawings of all electrical and control panels,

(g) Drawings showing details of supports for pipes, cable trays etc.

(h) Any other drawings relevant to the work.

1.17.3 Completion Drawings

Three sets of the following laminated drawings shall be submitted by the contractorwhile handing over the installation to the Department. Out of this one of the sets shallbe laminated on a hard base for display in the fire control room. In addition one set willbe given on compact disc.

(a) Installation drawings giving complete details of all the equipments, including theirfoundations,

(b) Plumbing layout drawings giving sizes and lengths of all the pipes and the sizesand locations of all types of valves, and including isometric drawings for theentire piping including the pipe connections to the various equipments.

(c) Line diagram and layout of all electrical control panels giving switchgear ratingsand their disposition, cable feeder sizes and their layout,

(d) Control wiring drawings with all control components and sequence of operationsto explain the operation of control circuits,

1.18 DOCUMENTS TO'BE FURNISHED ON COMPLETION OF INSTALLATION

Three sets of the following documents shall be furnished to the department by thecontractor on completion of work:-

(a) Completion drawings as per para 1.17.3

(b) 3 sets of manufacturer's technical catalogues of all equipmerits and accessories.

(c) Operation and maintenance manual of all major equipments, detailing alladjustments, operation and maintenance procedure.

(8)

CHAPTER-2

SYSTEM AND SYSTEM REQUIREMENTS

2.1 INTRODUCTIONFire safety in building has become very important consideration in construction andmaintenance. A normal office building has fire load in the form of large quantity ofpapers and furnishing. Buildings like Hospitals, Laboratories, Auditorium, Libraries,Museum etc. require fire safety provisions by virtue of their type of occupancy andimportance irrespective of their height.

The aim of fire safety measure is to provide protection to life of occupants and propertyin the event of fire in the building. National Building Code of India Part-IV deals indetails measures to be adopted for fire safety in buildings. The measures depend uponthe occupancy, use, height and area of building.

Besides various mediums of fighting fire , water is the cheapest and the most easilyavailablefor this purpose. Water based fixed fire fighting installationsare most commonlyprovided in buildings.

The design and installation of a fire fighting system is of atmost importance. The firefighting installation on completion will have to be got cleared from the local fire fightingauthorities (Fire Service) for its efficacy, suitability and usability by the Fire Servicein the event of a fire.

Accordingly such system shall be executed on turnkey basis to ensure proper qualityof material and zero leakage system apart from use of equipment and other accessories.All the components shall be integrated to ensure proper performance at the time of fire.

. 2.2 FIRE FIGHTING SYSTEM :

2.2.1 Following types of water based fixed fire fighting installations are normally provided inbuildings.(i) Wet Riser.(ii) Down Comer.(iii) Wet Riser cum Down Comer.(iv) Automatic Sprinkler.

2.2.2 In all the above systems, lines are laid in and/or around the building and permanentlycharged with water from a pressurized supply. In a building anyone system or acombination may be provided depending upon application of guidelines laid down inNational Building Code of India (Part-IV) as amended up to date.

2.2.3 Municipal Regulation of the city will also be taken in to consideration while selectingand designing fire fighting system for a building.

(9)

2.2.4 Requirement of fire fighting. installations in various buildings has been indicated inAppendix 'A'. However while selecting system for a building, provision of Para 2.2.2and 2.2.3 shall also be taken into consideration.

2.3 SYSTEM COMPONENTS.Besides architectural and building provisions such as under ground tank, pump houses,terrace tank, shafts for installation of internal hydrants, etc. fire fighting systems shallgenerally comprise supply, installation, testing and commissioning of components asdetailed in Table 2.1. Typical arrangement of installations have been indicated in Figures1 and 2.

2.4 SYSTEM ENGINEERING:The capacities and sizes of various components described above will depend uponthe type and height of the building. Specifications of various components have beendescribed in succeeding chapters. Following factors shall be taken in to considerationwhile designing various components.

2.4.1 Wet Riser cum Down Comer:-

2.4.1.1 The operating pressure of individual hydrant shall be 3.5 kg/cm2. At terrace levelhydrant, minimum 3.5 kg/cm2 pressure shall be maintained.

2.4.1.2 The pipe line will be designed in such a way that it should be possible to get dischargeat any location. Design parameters shall be as under:-(i) Maximum flow velocity 2.5 mps.(ii) Maximum Friction 5 m. per 100 m. run

2.4.1.3 Main Fire Pumps (Both electrical as well as diesel) shall be selected for.(i) Discharge 1620 Ipml2280 Ipm/2850 Ipm.

(To be selected from Appendix '/f\)(ii) Head 35 m + Height of terrace level hydrant

above pump level+ 6% of the maximum length of pipe from pumpdischarge to any hydrant at terrace level.

2.4.1.4 Terrace.pump shall be selected for(i) Discharge

(ii) Head

450 Ipm/gOOIpm.(To be selected from Appendix 'A')20 m.+ 6% of the maximum length of pipe fromterrace pump to any hydrant at terrace level.

2.4.1.5 Pressurlsaflon pump (Jockey Pump) shall be selected for(i) Discharge 200 Ipm to 300 Ipm depending upon size

of installation.(ii) Head 35 m. + height of terrace level hydrant above

pump level.

2.4.1.6 No.of Risers:- Number of risers will be decided to fulfill the following conditions:-(i) No corner of the building is farther than 30 m. from nearest riser.

(10)

(ii) The horizontal distance between two risers shall not be more than 50 m.(iii) Normally one riser is provided for every 1000 sq.m. of plinth area or part thereof.

However the number of risers can be suitably increased to meet the given situation.

TABLE 2.1

VARIOUS COMPONENTS OF FIRE FIGHTING INSTALLATIONS

S. System component Wet Riser Down Wet Riser AutomaticNo. Comer cum Sprinkler and

Down Wet RiserComer cum Down

Comer

(i) Electric Motor Driven Fire Pump Y N Y Y

(ii) Diesel Engine Driven Fire Pump(as stand by) Y N Y Y

(iii) Pressurisation Pump(Jockey Pump) Y N Y Y

11ivt Terrace Pumo N Y Y Y, (v) Vertical risers in the building. Y Y Y Y(vi) Pipe network inside the building

through ,out the area to beprotected with nozzles. N N N Y

(vii) External pipe line around thebuilding. Y N Y Y

(viii) Internal Hydrant. Y Y Y Y(ix) Yard Hydrant (External Hydrants) Y N Y Y(x) First-aid hose reel. Y Y Y Y

(xi) Hose Pipe and Branch Pipe. Y Y Y Y(xii) Air Vessels. Y Y Y Y

I (xiii) Fire Service Connections. Y N Y Y(xiv) Fire Service Inlet. Y Y Y Y(xv) Controls components like

pressure switches, flow switcheslevel indicator, alarm etc. Y Y Y Y

(xvi) Electrical Power and ControlPanel with cable and earthing etc. Y Y Y Y

(xvii) Pipe line accessories like Butterfly!Sluice Valve, Non-ReturnValve etc. Y Y Y Y

'Y' Stands to be provided.'N' Stands not to be provided.

(11)

2.4.1.7 Internal Hydrant:- Every riser will be provided with the following at every floor includingterrace and basement over and above sprinkler system.

(i) Single headed out let -2 Nos.

(ii) First Aid Hose Reel[ Length of pipe shall be such that nozzle of thehose can be taken into every room and within6 Mts. of any part of the rooms keeping in viewlayout and obstruction.]

(iii) Hose pipe 63 mm.dia 15 m. long withmale and female coupling at both ends.

(iv) Branch pipe 63 mm. dia with 20 mm.(nominal internal diameter)nozzle and suitable for instantaneousconnection.

-1 No.

-2 Nos.

-1 No.

2.4.1.8 Yard Hydrant (External Hydrant)

2.4.1.8.1 For fighting fire from out side the building, yard hydrants are provided around thebuilding and in the closed court yard. For connecting yard hydrants a ring of pipe shallbe laid under ground around the building at a minimum distance of 2 m. form the faceof the building. All internal hydrants risers shall be connected with this ring.

Yard hydrants shall be located at a minimum distance of 2 m. but not more than15 m from the building face. The yard hydrants shall be accessible and should normallybe provided near boundary wall/along road. While locating yard hydrants it should beensured that same do not become hindrance in vehicular movement or entrance to thebuilding. Yard hydrants, should be located around the building in such a way that itshould be possible to fight fire on any face of the building from the nearest hydrant.A distance of 45 m. from hydrant to hydrant will be adequate.

2.4.1.8.2 Yard hydrant will include the following accessories .(i) Connection from ring main with 80 mm dia MS pipe .(ii) 63 mm dia single head landing valve(iii) Butterfly/sluice valve 80 mm dia(iv) Hose pipe 63 mm dia 15 m. long

with male and female coupling at both ends(v) Branch pipe 63 mm dia with 20 mm

(nominal internal diameter) nozzleand suitable for instantaneous connection

1 No.1 No.

2 Nos.

1 No.

All above components shall be housed in a suitable size MS cabinet made from 2 mmthick sheet with glass door. The cabinet shall be painted red as per para 1.13.

(Note:- In case hose pipes and branch pipes are likely to be stolen from yard hydrants,the same may be kept in a central place i.e. fire control room/fire pump room.)

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2.4.1.9 Fire Service inlet:- 'In order to facilitate feeding of water in the system by fireservice, a 2/3 way 63 mm dia collecting head shall be provided and connected 'witheach riser/down comer and the ring main with non return valve and butterfly/sluicevalve. This should be located at a place where fire brigade tender can reach.

2.4.1.10 Fire Service connection :- In case under ground storage tank is not approachableby fire tenders, a 4 way 63 mm diameter instantaneous male inlet connection isprovided at street level and connected to UG tank with 150 mm diameter underground pipe.

2.4.1.11 Air Vessel :- To counteract the water hammer effect, air vessels shall be providedone at top of each riser.

2.4.1.12 Orifice Plate:- To reduce pressure on individual hydrant to operating pressure of3.5kg/cm2, orifice plate shall be provided before connection of hydrant.

2.4.1.13 Alarm:- To indicate the flow of water in the system, turbine type alarm shall beprovided out side the pump house in the main line before any connection is taken.The alarm will indicate the healthiness of the system and shall not be silenced till themain fire pump is in operation.

2.4.1.14 Control system ;-

2.4.1.14.1 The system shall be designed for operation automatically so that as and when wateris drawn from the system through any hydrant, the pumps will operate automaticallyand ,feed water in to the system. However once a fire pump start working, it will bestopped only manually (except jockey pump) or on account of any fault or nonavailability of power supply to electrical pumps or low water level in UG/Terrace tank.

Facility shall also be provided for manual operation. A selector switch for auto/manualselection shall be provided in each pump.

2.4.1.14.2 The control system shall be designed to provide the following sequence of operation.(a) The Pressurisation Pump shall maintain pressure in the system and shall operate

only on account of slow pressure loss. In case of sudden pressure loss thePressurisation Pump shall not operate. The pump shall start when the waterpressure in the system falls to a pre-set value (about 0.35 kg./cm2below normalsystem pressure) and shut down when the system pressure reaches the setvalue. Both limits shall be adjustable.

(b) Main Electric Fire Pump shall operate on account of sudden pressure loss. Solong as Main Electric Fire Pump is working, other Fire Pumps will not operate.The pump shall start when the water pressure falls to a pre-set value in thesystem (about 1 kg./cm2)

(c) The Diesel Fire Pump will start on sudden pressure loss, only in case supplyto Main Electric Fire Pump is not available or within a pre-set time the MainElectric Fire Pump fails to start or fails during operation. No other pump will beworking when Diesel Engine Fire Pump is in operation. Audio-Visual Alarm shallbe available to indicate failure of Main Electric Fire Pump.

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(d) A three attempts starti,'g facility will be provided for diesel pump.

(e) If within a pre-set time, the standby pump also fails to start or fails to developpressure, the standby pump shall also be shut down and locked out. An audiovisual alarm indication shall be given at the control panel.

(f) The Terrace Pumps will start on sudden loss of pressure only when both theFire Pumps have either failed to start or exhausted water.

(g) Only one pump will be working at a time. In manual mode more than one pumpcan be started.

(h) Water level in UG and terrace tanks shall be monitored and in case of lowwater level, pumps connected with the tank shall not operate (even on manualmode) or stop operation as the case may be. An audio-visual alarm shall begiven at the control panel.

2.4.2 Wet Riser :- In wet riser system all components described in 2.4.1. shall be providedexcept terrace pump. Terrace tank shall also not be required.

2.4.3 Down Comer :- In down comer, under ground tank, fire pumps at ground level, ringmain and yard hydrant will not be provided. Except these items, all other itemsdescribed in 2.4.1 shall be provided. Following points are also to be taken in toconsideration.

2.4.3.1 A minimum of two terrace pumps(electrical) shall be provided. One pump shall actas standby.

2.4.3.2 Down comer Pipes :- Consideration of Para 2.4.1.6 shall apply.

2.4.3.3 All down comer pipes shall be inter connected at the terrace level. In case terracesare not interconnected, all building will be treated as individual buildings.

2.4.3.4 Fire service inlet shall be provided with each riser for facilitating pumping of waterfrom fire service tenders.

2.4.3.5 Control system :- The starting of terrace pump shall be automatic i.e. with theopening of any hydrant valve or hose reel on any floor, the pump will start automaticallywith fall in line pressure. In addition start /stop push buttons shall be provided atground floor near internal hydrant for starting the pump manually. Where fire controlroom has been provided, remote operation of terrace pump may be done from firecontrol room in place of internal hydrant. The control panel for terrace pumps shallbe provided near the pumps in a suitable enclosure to avoid unauthorised operation.

2.4.4 Automatic Sprinkler :-

2.4.4.1 In addition to all provisions of Wet riser and Down comer system described in-Para2.4.1, in automatic sprinkler system, water lines of various size are laid through outthe area to be protected and sprinkler heads are provided at regular interval so thatwater from sprinkler head cover the entire area under fire.

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2.4.4.2

2.4.4.3

2.4.4.4

2.4.4.5

2.4.4.6

Sprinkler has two functions-to perform i.e. to detect fire and then to provide adequatedistribution of water to control or extinguish it. Sprinkler heads operate at pre-determined temperature to discharge water over the affected area below. Only thosesprinkler heads operate which are in the vicinity of fire i.e. those which becomesufficiently heated.

Lines for sprinklers may be separate or common with wet riser system dependingupon type of building.

The area to be protected by sprinkler is divided in to various zones. For detectingoperation of sprinkler in a zone, flow switches are provided which are wired to anannunciation panel installed in the Fire Control Room. In the event of operation ofsprinkler(s) in an affected area, the annunciation panel will give audio-visual alarmand indicate the affected zone. This arrangement will be independent of fire alarmsystem.

The sprinkler shall be installed only where there is no danger of freezing of water inthe pipes at any time.

Details of sprinkler installations have been given in separate Chapter 9.

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CHAPTER-3

ARCHITECTURAL AND STRUCTURALREQUIREMENTS

3.2 Following provisions/spaces are required for fire fighting system.

3.1 SCOPE

This chapter outlines the general guidelines for planning space requirements, equipmentlocation, floor loading and other structural requirements for fire fighting systems.

3.2.1 Static Water Storage Tanks:- In order to ensure satisfactory supply of water for thepumps of fire fighting, static water storage tanks exclusively for the purpose of firefighting shall be provided. The tank shall be provided both under ground and/or atterrace. The capacities shall be determined from Appendix 'A'.

,-

While deciding the capacities of under ground and terrace tanks following points shallalso be taken into consideration.

(i) In case common pump house and under ground tank are to be provided for morethan one building in a campus, the capacity of UG tank shall be increased, ifrequired in consultation with local Fire Brigade.

(ii) Arrangement shall be made for replenistvnent of water from alternative sourceat the rate of 1000 Itrs. per minute for underground tank. When this is notfeasible the capacities of storage tanks (both underground and terrace tanks)shall be increased suitably in consultation with local Fire Brigade.

3.2.1.2 Following factors are to be considered for deciding the location of underground waterstorage tank.

(i) The tank shall be by the side of road so that fire brigade personnel can drawwater from the tank or discharge water into the tank. Suitable manhole shall beprovided for this purpose.

(ii) When the slab of the tank forms a part of pathway/drive way, it shall be designedto withstand the vehicular load of 40 tonnes.

(iii) Arrangement shall be made to replenish water by mains or alternative source.

(iv) Suitable arrangement shall be made to prevent stagnation of water in the tank.For this purpose, the tank of domestic or other water supply may be fed from theover flow of static water storage tank to ensure water level there in. Figure 7 maybe referred to.

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j _"'* (c. ,. -- SQ§!.4Ik-. ,4 fa

(v) The static water storage is meant for fire fighting only and is not to be used forany other purpose except when the tank is to be cleaned.

(vi) There shall be no leakage in the tank.

3.2.1.3 Following factors are to be considered for deciding the location of terrace tank.

(i) The terrace tank should be easily accessible.

(ii) Connection to terrace pump shall be conveniently made.

(iii) Factors at 3.2.1.2 (iii) to (vi) shall also be considered.

(iv) The terrace tank may be of masonary, cement concrete, M.S.or plastic dependingupon relevant considerations.

3.2.2 Pump House:- For installation of fire fighting pumps (Main Electrical Pump, DieselEngine Driven and Pressurisation Pump along with Electrical Control Panel) pumphouse is required. Following factors are to be considered.

(i) In order to provide positive (flooded) suction to fire pumps, the pump house shallbe at a level below or equal to that of static water storage tank.

(ii) The pump house shall be easily accessible for fire fighting operations and atleast 6 meters away from the building.

(iii) The pump house shall not be located in the building to be protected.

(iv) Water supply pump can be installed in the same pump house.

(v) Thle ~e of the pump house shall be not less than 6.0 m.(W) x 8 m.(L) x 3.5 m.(H). If two electrical pumps are to be provided, the length of the pump house shallbe not less than 12 m. If the water supply pumps are to be installed in the samepump house, then either the width of pump house be increased by 1m. or lengthbe increased by 2 m. or suitably as is necessary.

(vi) Suitable ramp shall be provided for lowering the equipment in to the pump house.Stair case with entry door at ground level and locking arrangement shall beprovided. '

(vii) Ventilators at least 500 mm. high shall be provided on three sides for natural light.Adequate ventilation for dissipation of heat due to operation of motors/engineshall be provided.

(viii) Proper water proofing shall be provided. A sump of size 0.6 m x 0.6 rn x 0.3 mshall be provided in the pump house in one corner adjacent with the tank wall.The floor slope will lead towards the sump 'so that water leakage can be pumpedout.

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(ix) In order to ensure that there is no leakage of water in the pump house, no pipe/cable shall cross the pump house below ground level. Suitable opening in wallabove ground level shall be provided for crossing of pipes/cables.

(x) Where it is not possible to construct pump house under ground, the same maybe constructed over ground. However automatic priming arrangement shall bemade to ensure operation of pump without priming. (As per para 4.5.6). Typicalarrangement of pumps with priming arrangement has been shown in Figure - 6.

(xi) There shall be no beam under the floor of pump house

(xii) The floor of the pump house shall be designed for loading of 1500 kg./sq.m.Foundation of pumps shall be raised over finished floor and in no case flooringor RCC walls shall be damaged while installing equipment in the pump house.

(xiii) The pump house shall be clearly marked by luminous sign.

(xiv) Typical layout of fire pump house has been shown in Figure - 10.

3.2.3 Terrace Pump - Terrace pump is to be installed near terrace tank. The tank shallbe at higher level to provide positive suction to the pump. No separate pump houseis required for terrace pump. However suitable enclosure for protection of pump is tobe provided. The pump may be located in stair case mumty if suitable space is available.The pump may be located near beam so that its load is not transferred to slab.

3.2.4 Internal Hydrant - Internal hydrants are provided to fight fire from within the building.Following factors are considered for deciding location of internal hydrant.

(i) "Internal hydrants are provided at every floor at the same location and connectedwith risers.

(ii) Numbers and location of risers shall be decided as per Para 2.4.1.6. Every wingof the building shall preferably be provided with independent hydrants. Hydrantshall be located in the center of the building so that one hydrant can cover areaon both sides.

(iii) A masonary enclosure on three sides of size minimum 1200 mm wide and BOOmm. deep and 2100 mm. height shall be provided. Cut of size 200 mm. X200 mm be provided in one corner in the slab for down comer/wet riser pipe. Ifsprinkler installations are to be provided additional cut out of similar size forsprinkler pipe and drain pipe as the case may be, shall be provided. Steel shutterwith 1250 mm. glazing on top with locking arrangement shall be provided in frontof the hydrant. The shutter shall be painted red as per para 1.13. Typicalarrangement has been shown in Figure-B.

(iv) Internal hydrant shall be easily accessible and provided near stair case. A clearspace of at least 1.5 m. should be available in front of the internal hydrant foroperation. Internal hydrant shall not be provided in a lockable room.

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(v) Internal hydrant shall be clearly marked with the inscription of "FIRE HYDRANT"by luminous sign. Suitable lighting arrangement shall be provided in front of theinternal hydrant.

3.3 BUILDING TO BE SPRINKLER PROTECTED

, The sprinkler pipes are installed through out the area to be protected. The structureshall be designed to support sprinkler pipes and the contained water. Inbuilt drainagewith slope shall be provided through out the area so that in the event of operation ofsprinkler, water is drained out without spreading to other parts of the building. Storageracks/platforms shall be sufficiently raised above floor.

3.4 FIRE CONTROL ROOM

For all buildings 15 m. in height or above, and apartment buildings with height 30 m.and above, a fire control room (size 4 m x 4 m Approximately) shall be provided onthe entrance floor of the building. One store for keeping spares for fire fighting systemshall also be provided adjacent with the fire control room.

.'

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CHAPTER-4PLANNING, DESIGNING AND COORDINATION

4.1 INTRODUCTION

Planning of fire fighting system is to be done right at the stage when the building plansare prepared by the Architect. Subsequently during preparation of working drawings,all architectural and structural provisions described in Chapter 3 are also to be keptin the building plans.

Careful planning from the initial stage it self will avoid changes and problems at a laterstage. This chapter covers aspects of planning, designing and coordination of firefighting system.

4.2 SCHEME

The provision of fire fighting installation depends upon building use, height, floor areaetc. Considering these factors, the system or a combination of systems which will berequired to be adopted should be finally selected in accordance with National BuildingCode and regulations of local fire authorities, if applicable.

4.3 APPROVAL OF LOCAL BODIES

In the building plans which are submitted to local bodies for approval, details of firefighting system proposed in the building are also indicated. Local bodies normally referthe same to Chief Fire Officer and recommendations of Chief Fire Officer are conveyedto the officer who submitted the plans. The proposed system should incorporate therecommendation of Chief Fire officer.

4.4 ARCHITECTURAL PROVISION

4.4.1 For any fire fighting system, under ground tank and pump house are required. Thesemay be located any where in the campus subject to proper approach. The pumphouse should preferably be near the sub-station. It will be a good practice if all buildingservices including fire fighting are located at one place in the campus.

4.4.2 In campus having more than one building to be protected, it is not required to haveindividualsystem for every building.A number of building in the campus can be protectedby common fire pumps. However yard hydrant I internal hydrant and terrace pumpshall be provided in each building . When the buildings are close by, the yard hydrantscan be located in such a way that one yard hydrant cover more than one building .

4.4.3 In a large campus, buildings of different heights may be proposed. As per NationalBuilding Code, provision of fire fighting system may not be required in building withlesser heights. Provisions of fire fighting system as indicated in NBC are mandatory

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minimum required for any building which does not debar higher provisions. An unsafebuilding in a campus will become potential danger to the safety of other buildings.If fire fighting system is being provided in a campus on account of one or morebuildings, it is desirable to extend the facility to other buildings also where this maynot be required as a mandatory provision. This will ensure safety of all the building inthe campus.

4.4.4 The shafts for vertical risers are to be provided in the building. Their number andlocation be decided as per guidelines given in Chapter 2 and 3.

4.4.5 Location of yard hydrant shall be selected in accordance with provision of Para 2.4.1.8

4.4.6 Route of pipe connection from ring main to the riser shall be selected properly. Positionof tie beam or any other structural member shall be checked so that it does not comein the way of pipes.

4.4.7 For vertical riser pipe passage, opening of 200 mm x 200 mm shall be left in slab in theinternal hydrant shaft as per Para 3.2.4(iii). The opening shall be located vertically oneabove the other. In buildings where sprinkler system is to be installed, additional openingof same size is to be provided within the nitch at the other corner for sprinkler pipe.

4.4.8 Details of internal hydrant MS door with glass is to be provided to concerned architecUdivision in advance. This may be modified for architectural considerations provided theglass height is not changed.

4.4;9 Sprinkler pipes are laid through out the area to be protected. The route of pipes is tobe pre-decided in consultation with the Architect. For vertical pipes, shafts for risersare to be used. Layout of horizontal pipe and location of sprinkler head are to bedecided keeping in view of location of fans and fitting. In case false ceiling is beingprovided in the area, horizontal pipes may be laid above false ceiling and only sprinklerhead is provided below false ceiling. If the building is centrally alr-condltloned, locationof duct and air termination may be taken into account. Reflected ceiling plan shall beprepared indicating all services above false ceiling .

4.5 DESIGNING

4.5.1 Requirement of components for various fire fighting systems has been givenin Para - 2.3 . Capacity of pumps shall be worked out in accordance with Para.- 2.4.1

4.5.2 The pipe sizes shall be selected as under :-(i) Suction and delivery pipes of pumps shall be not less than following.

Pump Discharge Suction dia Delivery dla(mm) (mrn)

(a) 450 Ipm 50 50(b) 900 Ipm 75 50(c) 1400 Ipm 100 100(d) 2280 Ipm 150 150(e) 2850 Ipm 200 150(f) 4540 Ipm 250 200

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(ii) Pipe from pump house to ring main connection and ring main shall be not lessthan 150 mm dia. Higher size pipe shall be selected depending upon length ofpipe and Friction loss.

(iii) Down comer pipe size shall be of 100 mm dia.

(iv) Wet riser pipe size shall be 100 mm dia except business buildings more than 30mtr in height where the same shall be 150 mm dia.

(v) Where wet riser/down comers are not to be provided but hose reel and terracetanks are to be provided, pipe of size 65 mm diameter shall be provided inbetween the pump and hose reel.

(vi) Fire service in let and fire service connection shall be with pipe size not less than150 mm dia.

(vii) All Tee off connection for landing valve from vertical risers or from ring main forexternal hydrants shall be with pipe size not less than 80 mm. dia.

4.5.3 Selection of Material :- Components like landing valve, hose coupling branch pipesetc are available in three material i.e. Aluminum Alloy, Gun metal and Stainless steel,Aluminum Alloy is prone to wear and tear and weather conditions faster than other twomaterials. However being cheaper, Aluminum Alloy may be used in location wherechances of pilferage are more. Stainless steel may be considered at location not verysafe from theft. Gun metal may be used in installations which are well protected.

4.5.4 Hose Pipes! Branch pipes :- A minimum of two number of 63 mm dia 15 m longhose pipe with instantaneous coupling at both ends and one number branch pipe withnozzle shall be kept with every internal and external hydrant.

4.5.5 Orifice Plate :- The pressure in a fire fighting system varies from point to point. Thepressure will be maximum in the pump house and minimum at the farthest hydrantat terrace level. To reduce pressure to operating pressure at every internal/externalhydrant, orifice plates are provided before connection of landing valve between theflanges of landing valve and pipe flange. The size of orifice shall be calculated as perdetails given in Table 4.1

TABLE 4.1SELECTION OF ORIFICE PLATE

Pressure Loss Diameter of OrificeKg/cm2 Pipe Size

80 mm 100 mm3.5 41.93.0 43.02.5 44.802.0 46.40

1.5 48.90 56.20

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Pressure Loss Diameter of OrificeKg/cm2 Pipe Size

80 mm 100 mm

1.0 52.30 57.600.9 53.20 59.000.8 54.10 60.40

0.7 55.30 62.000.6 56.60 63.900.5 58.20 66.500.4 59.80 69.700.3 62,00 74.200.2 65.00 81.100.1 - 82.20

4.5.6 Automatic Priming Arrangement :- Where it is not possible to provide positive suctionfor fire pumps and pressurisation pump, automatic priming arrangement shall beprovided. All pumps will have independent suction without stop valve. Foot valve shallbe provided at the end of suction pipe in the tank.

A tank of capacity not less than 2500 Itrs.shall be installed at least 2-3 m. above thehighest level of the pumps. The tank shall be connected by 50 mm.dia pipe withdelivery side of each pump (before non-return valve). A stop valve and non return valveshall be provided in each connecting pipe.

For filling the priming tank, one horizontal monoblock submersible pump shall beinstalled in the water storage tank which shall operate automatically with low and highlevel switches provided in the priming tank. The pump motor shall be connected withthe electrical panel of pressurisation pump.

The priming tank shall be made of M.S., 3 mm. thick sheet and welded construction.The tank shall be installed either on the terrace of pump room or inside the pump roomon suitable pedestal. Over flow and drain connections shall be provided and waterreturned to the water storage tank.

Level indicator shall be provided for indicating water level in the priming tank.

Typical arrangement of automatic priming has been shown in Fig.6.

4.6 COORDINATION

4.6.1 Award of Work :- Depending upon progress of building work, the work of fire fightingshould be awarded well in time.

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4.6.2 Power and Watersupply for Erection :- If the department is to provide power andwater for erection, the same should be made available before start of the work sincewithout these facilities, fire fighting work can not be started.

4.6.3 The Pump house and underground tank where main equipments are to be installedshould be available immediately after the work has been awarded. During Constructionof under ground tank, 2 Nos. 200 mm dia MS -C Class pipe with flanges on both sidesshall be embedded for connection with suction header of the fire pumps. In caseseparate sprinkler pumps are to be provided, additional pipes shall be embedded asper actual requirement. The pipe shall be extended at least 100 mm. on both sidesof the finished wall.

4.6.4 The underground tank and Pump house shall be tested for any leakage / seepagebefore start of the work. This shall be ensured that both tank and pump house arefree from leakage/seepage.

4.6.5 The work of laying of pipe for sprinkler should be taken up in coordination with theducts installation in case of building is provided with central alr-condltlonlnq, other wiseafter plaster work is over and one coat of white wash has been applied.

4.6.6 The sprinkler pipes should be tested area wise and caped for connection to pipes ofadjoining area. .

4.6.7 The route of external pipe i.e. pipe from pump house and ring main should be decidedin coordination with other building services. Guide lines of Chapter 2 and 4 are to befollowed . It will be desirable to prepare a services drawing where all services i.e:sewage, drainage, water supply lines, UG cable, pipes for air-conditioning and firefighting are reflected.

4.6.8 Riser pipes shall be installed after the riser shafts are available duly plastered.

4.6.9 For laying of external pipes, excavation up to a depth of 1.25 m or more is to becarried out. Thls may cause hindrance in execution of other building works. Externalpipes shall therefore be laid in a phased manner in coordination with other agencies.The pipes shall be tested and earth filled back before excavation for next phase istaken up.' Equipment for testing etcshould be available in advance before start ofunderground pipe laying work.

4.6.10 All under ground pipes are to be laidmuch before starting of finishing work Le. pavement,road/ horticulture work etc around the building.

4.6.11 ·Thework of installationof equipment in pump houseshould be carried out simultaneouslyand kept ready for connection to the pipe network.

4.6.12 Before occupation, the building is to be inspected by the representative of Chief FireOfficer and local bodies. The building will be issued N.O.C. for occupation only whenall safety provisions including fire fighting work are complete to the satisfaction of ChiefFire Officer. As such, fire fighting work is to be completed and commissioned withtemporary power supply well before other building works and services are complete.

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'CHAPTER-5

FIRE PUMPS

5.1 SCOPE

This chapter covers the general requirements of water pumps for main fire pump,jockey pump and terrace pump.

5.2 TYPE

The pumps shall be centrifugal type direct driven with a 3 phase, 415 V ±..10%, 50 Hz.,A.C. motor. The standby fire pump shall be driven by diesel engine. The pumps maybe either of horizontal split casing (HSC) type with operating speed not exceeding 1500rpm., or solid casing with operating speed not exceeding 3000 rpm. as specified in thetender documents.

5.3 RATING

The main fire pump and terrace pump shall be suitable for continuous operation in thesystem. The jockey pump shall be suitable for intermittent operation to built up pressurein the system on account of leakage. The head and discharge requirements shall beas specified in the tender documents. The head shall be suitable for the system andshall take into consideration the pressure drops across the various components in thewater circuit as well as the frictional losses.

Pump shall be capable of discharging not less than 150 percent of the rated dischargeat a head of not less than 65 percent with the rated head. The shut off head shall notexceed 120 percent of the rated head.

5.4 MATERIAL AND CONSTRUCTION

(i) The centrifugal pumps shall conform to IS 1520.

(ii) The pump casing shall be of heavy section close grained cast iron and designedto withstand 1.5 times the working pressure. The casing shall be provided withshaft seal arrangement as well as flanges for suction and delivery pipe connectionsas required.

(iii) The impeller shall be of bronze or gunmetal. This snail be shrouded type withmachined collars. Wear rings, where fitted to the impeller, shall be of the samematerial as the impeller. The impeller surface shall be smooth finished for minimumfrictional loss. The impeller shall be secured to the shaft by a key.

(iv) The shaft shall be of stainless steel and shall be accurately machined. The shaftshall be balanced to avoid vibrations at any speed within the operating range ofthe pump.

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(v) The shaft sleeve 'shall be of bronze or gunmetal.

(vi) The bearings shall be ball or roller type suitable for the duty involved. These shallbe grease lubricated and shall be providedwith grease nipples/cups. The bearingsshall be effectively sealed against leakage of lubricant or entry of dust or water.

(vii) The shaft seal shall be mechanical type, so as to allow minimum leakage. A dripwell shall be provided beneath the seal.

(viii) The pumps shall be directly coupled to the motor/diesel engine shaft through aflexible coupling protected by a coupling guard.

(ix) The pump and motor/diesel engine shall be mounted on a common base platefabricated from mild steel section. The base plate shall have rigid, flat and truesurfaces to receive the pump and motor/diesel engine mounting feet. The pumpwill be perfectly aligned with the motor/engine so as to avoid any vibration duringoperation.

5.5 ACCESSORIES

Each pump shall be provided with the following accessories: -

(a) Butterfly/sluice valves on suction and discharge (If positive suction is not providedbutterfly valve at suction is not to be provided).

(b) Reducers, as may be required to match the sizes of the connected pipe work.

(c) Non-return valve at the discharge.

(d) Pressure gauge at discharge side between pump and the non-return valve.

5.6 INSTALLATION

(i) The pump and motor/engine assembly shall be mounted and arranged for easeof maintenance and to prevent transmission of vibration and noise to the buildingstructure or to the pipe work.

(ii) The pump and motor/engine assembly shall be installed on suitable RCCfoundation. The length and width of the foundation shall be such that 100 mm.space is left all around the base frame. The height of foundation shall be sodecided that the total weight of foundation block is 1.5 times the operating weightof the pump assembly. The foundation shall be isolated from the floor by vibrationisolating pads. Angle iron frame of size 35 mm x 35 mm x 3 mm shall beprovided on the top edges of the foundation.

(iii) More than one pump and motor assembly shall not be installed on a single baseor cement concrete block.

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(iv) The suction/discharge pipe shall be independently supported and their weightshall not be transferred to the pump. It should be possible to disconnect anypump for repairs without disturbing the connecting pipe line.

(v) A minimum clearance of 1 m. around the main pumps shall be provided. Forjockey pump-clearance of 75 cm. shall be adequate.

(vi) Sufficient space is to be left in front for the radiator of diesel engine for freedischarge of hot air. Arrangement for discharging hot air to out side the pumphouse shall be provided so that hot air does not stagnate in the pump house.

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CHAPTER-6DIESEL ENGINE FOR FIRE PUMP

6.1 SCOPE

This chapter covers the details of requirements of a diesel engine for main fire pumpto act as standby.

6.2 GENERAL

The diesel engine shall be suitable for automatic operation complete with necessaryautomatic starting gear, battery system and shall be complete with all accessories.Both engine and pump shall be assembled on a common bed place, fabricated frommild steel channel.

6.3 DRIVE

The pump shall be only direct driven by means of a flexible coupling. Coupling guardshall be provided. The speed shall be 1500 RPM.

6.4 DIESEL ENGINE

6.4.1 Environment conditions- The engine shall be suitable to operate under the conditionsof environment at site.

6.4.2 Engine Rating- The engine shall be multi cylinder/vertical 4 stroke cycle, watercooled, developing suitable HP at the operating speed specified to drive the fire pump.Continuous capacity available for the load shall be exclusive of the power requirementof auxiliaries of the diesel engine, and after correction for altitude, ambient temperatureand humidity for specified environment conditions. The engine rating shall be suitableto drive the pump at 150 percent of its rated discharge with at least 65 percent of ratedhead. The engine shall have 10% overload capacity for one hour in any period of 12hours continuous run.

The engine shall be suitable for cold starting for which suitable heaters shall beprovided in lubricating oil.

The engine shall develop full load within 15 seconds from the receipt of signal to start.The diesel engine shall conform to BS 64911S1601/IS 10002, amended upto date.

6.4.3 Engine Accessories- The engine shall be complete with following accessories.(i) Fly wheel dynamically balanced. .

(ii) Direct coupling for pump and coupling guard.

(iii) Radiator with hoses, fan, water pump, drive arrangement and guard.

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(iv) Air cleaner dry type.

(v) Fuel service tank with necessary pipe work.

(vi) Pump for lubricating oil and Lub.oil filter.

(vii) Elect. starting battery 12 V/24 V with 2 Nos. battery.

(viii) Exhaust silencer with necessary pipe work.

(ix) Governor.

(x) Instrument panel housing all the gauges, including Tachometer, hour meter andstarting switch with key (for manual starting).

(xi) Necessary safety controls.

(xii) Winterisation arrangement.

(xiii) Hand operated semi rotary pump for filling the service tank.

6.4.4 Cooling System-The engine shall be radiator water cooled. The radiator assemblyshall be mounted on the engine. The radiator fan shall be driven by the engine as itsauxiliary with multiple fan belts. When half the belts are broken, the remaining beltsshall be capable of driving the fan. Cooling water shall be circulated by means of anauxiliary pump of suitable capacity driven by the engine in a closed circuit.

6.4.5 Fuel System- The fuel, system shall be gravity fed from the fuel tank to the enginedriven fuel pump. The engine fuel tank shall be mounted either adjacent to the engineor suitably wall mounted on brackets. The fuel filter shall be suitably located to permiteasy servicing.

All fuel tubing to the engine shall be with M.S.'C' class pipewith flexible hose connectionswhere required. Plastic tubing shall not be permitted.

The fuel tank shall be of welded steel construction (3mm. thick ) and of capacitysufficient to allow the engine to run on full load for at least 8 hours. The tank shall becomplete with necessary floor mounted supports, level indicator (protected againstmechanical injury) inlet, outlet, overflow connections and drain plug and piping to theengine fuel tank. The outlet should be so located as to avoid entry of any sedimentsinto the fuel line to the engine.

6.4.6 Lubricating Oil System- Forced feed Lub.Oil system shall be employed for positivelubrication. Necessary Lub.oil filters shall be provided, located suitably for convenientservicing.

6.4.7 Starting System- The starting system shall comprise necessary batteries 12 Volts /24 Volts, starter motor of adequate capacity and axle type gear to match with the

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toothed ring on the fly wheel. Suitable protection to protect starting motor fromexcessively long cranking runs shall be suitably integratedwith engine protectionsystem.

The capacity of the battery shall be suitable for meeting the needs of the startingsystem.

The battery capacity shall be adequate for 10 consecutive starts without rechargingwith cold engine under full compression.

Three attempt starting facility shall be provided. If the engine fails to start after thirdattempt, the engine shall be locked out and suitable audio-visual alarm shall be givento indicate engine failure.

The scope shall cover all cabling, terminals, initial charging etc.

6.4.8 Exhaust System- The exhaust system shall be complete with residential silencersuitable for outdoor installation and silencer piping shall be extended upto 1 m, outsidepump house duly insulated with 50 mm.thick glass wool and 1.0 mm.thick aluminiumsheet cladding.

6.4.9 Engine shut down mechanism- This shall be manually operated and shall returnautomatically to the starting position after use.

6.4.10 Governing System- The engine shall be provided with an adjustable governor tocontrol the engine speed within 5% of its rated speed under all conditions of load uptofull load. The governor shall be set to maintain rated pump speed at maximum pumpload.

6.4.11 Engine instrumentation - Engine instrumentation shall include the following:-(i) Lub.oil pressure gauge.

(ii) Lub.oll temperature gauge.

(iii) Water temperature gauge.

(iv) Tachometer.

(v) Hour meter.

The instrumentation panel shall be suitably mounted on the engine.

6.4.12 Engine protection devices - Following engine protection and automatic shut downfacilities shall be provided:-(i) Low tub. oil pressure.

(ii) High cooling water temperature.

(ill) High lub. oil temperature.

(iv) Over speed shut down.

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6.4.13 Pipe work- All pipe lines with fittings and accessories required shall be provided forfuel oil, lub.oil and exhaust systems.

6.4.14 Anti vibration mounting- Suitable vibration mounting duly approved by engineer-in-charge shall be employed for mounting the unit so as to mlnirnlze transmission ofvibration to the structure.

6.4.15 Battery Charger- Necessary float and boost charger shall be incorporated in thecontrol section of power and control panel, to keep the battery under trim condition.Voltmeter to indicate the state of charge of the batteries shall be provided.

6.4.16 The engine installation shall be approved by the representative of engine manufacturer(who shall carry out after sales service under AMC).

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CHAPTER-7PIPE WORK

7.1 SCOPE

This chapter covers the requirements of pipe work in fire fighting installations.

7.2 PLUMBING DESIGN

Pipe sizes shown in tender documents are purely for contractor's guidance. Thecontractor shall be responsible for selection of sizes as per detailed engineering to bedone by him. Plumbing design to be done by the contractor shall incorporate thefollowing: -

(i) (a) Butterfly/sluice valves shall be provided at suction and delivery sides of pumps.(If positive suction is not provided valve at suction is not to be provided).

(b) External hydrant

(c) Fire service connection/inlet.

(d) Test valve.

(e) Drain connections.

(ii) For testing the system healthiness and automatic operation on daily basis, onetest pipe with butterfly/sluice valve shall be provided in common discharge header.For avoiding wastage of water, this pipe shall discharge water in the tank.

(Hi) Non return valve shall be provided at the delivery of each pump and fire serviceinlet. This shall be of swing type.

(iv) Air release valves with ball valve shall be provided in the piping system for ventingtrapped air with a size of 25 mm for pipes upto 100 mm and 40 mm for largerpipes.

(v) Plumbing drawings showing the sizes of pipe, valves, layout and other detailsshall be prepared and shall be got approved from the Engineer-in-Charge beforethe execution of the plumbing work.

7.3 PIPE MATERIALS

(i) Pipes shall be of the following materials.

(a) Mild steel heavy class (C-class)conforming to IS:1239 for sizes upto 150mm.

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(b) Welded black steel pipe, class 2, conforming to IS: 3589, for sizes greaterthan 150 mm. These pipes shall be factory rolled and fabricated fromminimum 6mm thick M.S. Sheet for pipes upto 350 mm dia and fromminimum 7mm thick M.S. sheet for pipes of 400 mm dia and above.

(c) Cast iron double flanged class-A conforming to IS :1536 or IS : 1537(to beprovided only in under ground application).

(d) GI Pipe medium class (B-class) conforming to IS:1239 (For Drain)

(ii) Cadmium plated steel nuts/bolts/washers shall be used.

7.4 PIPE JOINTS

l) Electric welding joints shall be provided in the M.S.pipe work. Flanged joints shallbe provided for connections to valves, pumps, air vessels etc. and also onstraight lengths at suitable points to facilitateerection and subsequent maintenance.

ii) For connection of C.I.Pipe, fittings shall also be of C.l.heavy grade conforming toIS :1538. The flanges shall be smooth faced and neoprene gasket shall beprovided. Where un-avoidable and to connect under ground pipe with risers,M.S.pipe may be used in the form of distant pieces. The joint between C.l.andM.S.pipe shall be flanged type. M.S.pipe laid at such locations shall be providedanti-corrosive treatment as per Para 7.12.

iii) Mild steel flanges shall be in accordance with Table - 17 of IS : 6392 i.e. "PlateFlanges for Welding" and flange thickness shall be as under. Gasket thicknessshall not be less than 3 mm.

Pipe dia Flange Thickness200 mm. 24 mm.150 mm and 125 mm. 22 mm.100 mm and 80 mm. 20 mm.65 mm. 18 mm.40 mm and below. 16 mm.

All hardware items such as Nuts, Bolts, Washers shall be of appropriate size. Washersshall be used on both sides of the bolt.

7.5 VALVES

Sluice valve conforming to IS:780 or butterfly valve conforming to IS:13095 shall beprovided. All valves shall be suitable to with-stand the pressure in the system andrating shall be PN. 1.6. All valves shall be right handed (i.e. handle or key shall berotated clock wise to close the valve), the direction of opening and closing shall bemarked and an open/shunt indicator fitted.

(i) The material of valves shall be as under:Body - Cast ironDisc - Cast Bronze or Stainless SteelSeat - Either integral or Nitrile rubberO-ring- Nitrile/ Silicon

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(ii) Non return valves shall be swing check type in horizontal run and lift check typein vertical run of pipes.

(iii) Air release valves shall be of gunmetal body.

7.6 STRAINERS

Stainless steel strainers shall have minimum 1 mm thick screen with 3 mm perforations.Strainers shall be provided with flanges.

7.7 ORIFICE PLATE

Orifice plate shall be made of 6 mm.thick stainless steel and shall have an identificationtag projecting beyond any flange between which it is clamped. The orifice shall beplain central hole without burs and diameter not less than one-half of the internaldiameter of the pipe to which it is fitted.

7.8 INSTRUMENTS

(i) Pressure gauge of appropriate range and 150 mm. dia size shall be provided.

(ii) The pressure gauge shall be duly calibrated before installation and shall becomplete with shut off valve.

7.9 AIR VESSEL

Air vessel shall be provided on top of each riser and shall be fabricated out of 8 mm.thick M.S.Sheet. The ends shall be dished. This shall be of 250 mm.dia, 1.2 m. highand installed vertically on suitable legs. The legs shall be provided with M.S.Plate ofsize 75 mm x 75 mm x 5 mm at the bottom so that the legs do not puncture the roof.The legs shall be grouted in CC foundation. Flange connection shall be provided forconnection with wet riser pipe. Air release valve and pressure gauge with shut offvalve shall be provided. The air vessel shall be tested at 25 kg/cm2 pressure beforeinstallation.

7.10 INSTALLATION

(i) The installation work shall be carried out in accordance with the detailed drawingsprepared by the contractor and approved by the Engineer-in-charge.

(ii) In pipe above ground level, expansion loops or joints shall be provided to takecare of expansion or contraction of pipes due to temperature changes.

(Hi) Tee-off connections shall be through equal or reducing tees, otherwise ferruleswelded to the main pipe shall be used. Drilling and tapping of the walls of themain pipe shall not be resorted to.

(iv) Open ends of piping shall be blocked as soon as the pipe is installed to avoidentrance of foreign matter.

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(v) Piping installation shall be,supported on or suspended from structure adequately.The contractor shall provide, clamps, hangers etc. in accordance with Para 7.1'3.Proper lines and levels shall be maintained while installing exposed pipes.

(vi) Pipe supports in pump house shall be floor mounted and of mild steel/G. I.Spacing of pipe supports shall not be more than that specified below: -

Nominal Pipe Size (mm) Spacing (m.)

20 and 2532 to 125150 and above

2.002.503.00

Extra supports shall be provided at the bends and at heavy fittings like valves toavoid undue stress on the pipes.

(vii) Anti vibration pads, springs or liners of resilient and non-deteriorating materialshall be provided at each support, so as to prevent transmission of vibrationthrough the supports.

(viii) Pipe sleeves of diameter larger than the pipe by least 50 mm shall be providedwherever pipes pass through walls and the annular spaces shall be filled with feltand finished with retaining rings.

(ix) (a) Vertical risers shall be parallel to walls and column lines and shall bestraight and in plumb. Risers passing from floor to floor shall be supportedat each floor by clamps as per Para 7.13.

(b) The space in the floor cut outs around the pipe work shall be closed usingcement concrete (1 :2:4 mix) or steel sheet, from the fire safetyconsiderations, taking care to see that a small annular space is left aroundthe pipes to prevent transmission of vibration to the structure.

(c) Riser shall have suitable supports at the lowest point.

(x) Where mild steel pipes are to be buried under ground the same shall be treatedin accordance with Para 7.12 before laying. The top of the pipes shall be not lessthan 100 cms. below the ground level. Where this is not practicable, permissionof the Engineer-in-charge shall be obtained for burying the pipes at lesser depth.Masonary or C.C.blocks shall be provided for supporting the pipes at interval inaccordance with Para 7.10(vi). After the pipes have been laid, the trench shallbe refilled with the excavated soil in layers of 20 cm. and rammed and any extrasoil shall be removed from the site of work by the contractor.

(xi) Underground pipe shall be laid at least 2 m. away from the face of the buildingpreferably along the roads and foot paths. As far as possible laying of pipesunder road, pavement and large open spaces shall be avoided. Pipes shall notbe laid under building and where unavoidable, these shall be laid in masonarytrenches with removable covers.

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(xii) To facilitate detection of leak and isolation of defective portion of pipe, valves shallbe provided in under ground pipe at suitable locations. As far as possible suchvalves shall be provided over grolind. If the valves are to be provided belowground, suitable masonary chamber with cover plate shall be provided. Locationswhere vehicles can pass shall be avoided for provision of valve below ground.

(xiii) Pipe over ground shall be painted in red colour as per para 1.13. Suitableidentification shall be provided to indicate the run of under ground pipe whereverthe route of underground pipe cannot be ascertained from the location of yardhydrant/isolating valves.

(xiv) It shall be made sure that proper noiseless circulation is achieved in the system.If proper circulation is not achieved due to air-bound connections, the contractorshall rectify the defective connections. He shall bear all the expenses for carryingout the above rectification, including the tearing up and refinishing of floors, walls,etc. as required.

7.11 PRESSURE TESTING

(a) All piping shall be tested to hydrostatic test pressure of at least one and a halftimes the maximum operating pressure, but not less than 10 kg.lsq.cm. for aperiod not less than 24 hours. All leaks and defects in joints revealed during thetesting shall be rectified to the satisfaction of the Engineer-in-Charge.

(b) Piping repaired subsequent to the above pressure test shall be re-tested in thesame manner.

(c) System may be tested in sections and such sections shall be securely capped.

(d) Pressure gauges may be capped off during pressure testing of the installation.

7.12 ANTI-CORROSIVE PROTECTION ON UNDER GROUND PIPE

Corrosion protection tape shall be wrapped on M.S.Pipes to be buried in ground. Thiscorrosion protection tape shall comprise of coal tar/asphalt component supported onfabric of organic or inorganic fibre and minimum4 mm. thick and conform to requirementof IS : 10221-Code of practice for coating and wrapping of under ground mild steel pipeline. Before application of corrosion protection tape all foreign matter on pipe shall beremoved with the help of wire brush and suitable primer shall be applied over the pipethereafter. The primer shall be allowed to dry until the solvent evaporates and thesurface becomes tacky. Both primer and tape shall be furnished by the samemanufacturer. Corrosion protection tape shall then be wound around the pipe in spiralfashion and bounded completely to the pipe. There shall be no air pocket or bubblebeneath the tape. The overlaps shall be 15 mm. and 250 mm. shall be left uncoatedon either end of pipe to permit installation and welding. This area shall be coated insituafter the pipe line is installed. The tapes shall be wrapped in accordance with themanufacturer's recommendations. If application is done in cold weather, the surfaceof the pipe shall be pre- heated until it is warm to touch and traces of moisture areremoved and then primer shall be applied and allowed to dry.

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7.13 PIPE SUPPORTS·

For installing pipes vertically or horizontally inside the building standard pipe supportsof reputed make shall be used. Following supports shall be used.

(i) Split pipe support clampswith rubber lining for vertical, horizontal and roof hanging.

(ii) Clevis Hangers for horizontal supports to adjust varying heights.

(iii) Sprinkler Hangers for horizontal supports for pipes from 15 mm dia to 150 mmdia.

Fastners and fully threaded rods shall be used for installing the pipe supports. Thesizes of pipe supports and installation shall be in accordance with manufacturersrecommendations. Some of the typical supports are shown in the Figure-g.

For pipes of size 100 mm and above, with the prior approval of Engineer-in-Charge,'u' clamp with dash fastner may be used for supporting horizontal pipe from ceiling.

7.14 MEASUREMENT

Measurements of plumbing work shall be on following basis:-

(a) Piping shall be measured along the centre line of installed pipes including all pipefittings and accessories but excluding valves and other items for which quantitiesare specifically indicated in the schedule of work. No separate payment shall bemade for fittings and accessories.

(b) The rates for piping work shall include all wastage allowances, flanges pipesupports, hangers, excavation, refilling, testing, nuts and check nuts, vibrationisolators, suspension where specified or required, and any other item required tocomplete the piping installation. None of these items will be separately measuredand paid. .

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CHAPTER-8FIRE FIGHTING ACCESSORIES

8.1 SCOPE

This chapter covers landing valves, first aid hose reels, hose pipes, branch pipes etc,which are vital tools for fire fighting.

8.2 LANDING VALVE

Landing valves are provided in the system for connection of hose pipes for dischargingwater for fighting fire by fire brigade or trained personnel.

8.2.1 The landing valves shall be as per I.S.: 5290

8.2.2 The landing valves are of single and double head outlet types.

8.2.3 Material of construction .(i) Body, outlet and cap etc Bronze or Aluminium alloy or stainless steel

(ii) .Spindle Brass for Bronze body, stainless steel forAluminium alloy and stainless steel body.

(iii) Hand wheel Mild steel or cast iron.

8.2.4 The water discharge shall be not less than 900 Ipm for single head and 1800 Ipm fordouble head valves at 7 kg/cm2 pressure.

8.2.5 Installation

8.2.5.1 The landing valve shall be fitted to a T connection of the riser at the landing in sucha way that the valve is in the centre of the internal hydrant opening and at a height of1 m. from floor level.

8.2.5.2 The valve base shall be vertical and the valve facing out side. There should be nohindrance in operation of the handle.

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8.3 FIRST AID HOSE REEL

First Aid Hose Reel is meant for delivering small quantity of water in early stage offire and can be operated even by untrained personnel, and thus provides a mosteffective fire fighting facility. It consists of a length of 20 mm (nominal internal) diameterhose.tubing warped around a reel with water inlet pipe, stop valve and shut off nozzle.The entire assembly is mounted on a wall bracket and can swing 180 degree. Thewater inlet is connected to the riser pipe by means of 37 mm socket and valve. Thehose tube can be pulled out easily for the purpose of discharge of water on fire.

8.3.1 First aid hose reel shall be as per 18-884. The coupling, branch pipe and nozzle shallbe as per 18:8090

8.3.2 Material of Construction :-(i) Hub and sides(ii) Wall Bracket(iii) Hose tube ( 20 mm )

(nominal internal dia):(iv) Nozzle with branch Pipe(v) 8top Valve(Ball Valve)

Aluminium Alloy / Mild steel/Aluminium sheets.Cast iron / Mild steel.Thermoplastic (Textile Reinforced ) Type-2.as per 18-12585Brass.Gun metal.

Normally M 8 construction is used. Other material may be used in areas havingcorrosive atmosphere.

8.3.3 The water flow rate shall be not less than 24 Ipm and the range of jet shall be not lessthan 6 m .

8.3.4 Installation

8.3.4.1 .Flrst aid hose reels are installed with internal hydrant (Para 2.4.1.7.) space for whichis provided as per para 3.2.4. Where space is not provided, first aid hose reel shallbe installed in suitable size M8 cabinet made from 2 mm thick sheet with glass door.The cabinet shall be painted red as per para 1.13. The size of the cabinet shall besuch that there is no obstruction in swinging the hose reel. The location of cabinetshall be such that it does not form an obstruction in passage/escape route.

8.3.4.2 The length of hose tube shall be such that the nozzle of the hose can be taken intoevery room and within a range of 6 M from any part of the room.

8.3.4.3 There shall be no obstruction in swinging the hose reel and should be installed abovelanding valve where provided.

8.3.4.4 The inlet valve shall be at 900 mm above floor level.

8.3.4.5 Hose reel bracket should be firmly grouted on the wall with the help of rawl bolts.

8.4 FIRE HOSE DELIVERY COUPLING, BRANCH PIPE AND NOZZLES:-

8.4.1 These are important accessories used for fire fighting operations.

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8.4.2 Material of Construction

8.4.2.1 Copper Alloy.

8.4.2.2 Aluminium alloy.

8.4.2.3 Stainless Steel .

8.4.3 Delivery Hose Coupling's

8.4.3.1 The delivery hose couplings consist of male half coupling and female half coupling.Groves are provided on outer side on both coupling for binding hose pipes with wires.In female coupling spring loaded cam tooth is provided for holding male half couplingin position. Male half coupling and female half coupling are provided on both sides (i.e.on one side male and on other side female) of hose pipes. Two or more pipes can bejoined together with the help of these couplings instantaneously .

8.4.3.2 Sizes:-These are available in two sizes i.e. 63 mm and 70 mm. Normally size 63 mmis used.

8.4.4 Branch Pipe and Nozzle :- Branch Pipes with nozzle are mounted at the end of hosepipe . Branch pipe is properly finished and free from sharp edges. During operation,a fireman has to hold the branch pipe. One end of branch pipe is fixed with hosecoupling and the other end is threaded to fit the nozzle.

Nozzle is tapered pipe with one end threaded internally which is fixed on branch pipe.The size of other end i.e. nozzle shall be 20 mm. (nominal internal diameter)

8.5 FIRE SERVICE INLET AND FIRE SERVICE CONNECTION

8.5.1 These are provided for connection of fire service hose pipes for either directlypressurising the system with their pumps or filling water in the tank from a.distance.In the first case non return valve with butterfly valve shall be provided for holding waterpressure. Fire service inlet shall be provided with each wet riser/down comer and thering main. The arrangement has been shown in Fig. 5. These are fixed to 150 mmdia pipe and located in MS Box made of 2 mm thick mild steel sheet with openableglass cover.

8.5.2 These shall be as per IS : 904.

8.5.3 Material of Construction

8.5.3.1 Copper Alloy.

8.5.3.2 Aluminium Alloy.

8.6 HOSE PIPES

8.6.1 Hose pipes shall be rubber lined woven jacketed and 63 mm in diameter. They shall

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conform to Type A (Re-inforced rubber lined) of IS: 636. They shall be flexible andcapable of being rolled. Length of hose pipe will be 15 m.

8.6.2 The hose pipe shall be complete with male and female coupling at the ends as perPara 8.4.3.

8.6.3 Besides keeping hose pipe with internal hydrant and yard hydrant, spare hose pipesalongwith branch pipes shall be kept in fire control room/pump room.

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'CHAPTER-9

AUTOMATIC SPRINKLER SYSTEM

9.1 SCOPE

This chapter covers the general requirement of selection, design, installation, testing,commissioning and maintenance of automatic sprinkler system for fire fighting inbuildings used for other than industrial and storage purpose.

9.1.1 References: For additional information regarding definitions, planning, design, hydrauliccalculations, tables etc. following documents are to be referred to.

(i) IS:15105::- Design and Installation of Fixed Automatic Sprinkler, Fire ExtinguisherSystems- Code of Practice.

(ii) IS:9972::- Specification for Automatic Sprinkler Heads for Fire Protection Service.

9.2 INTRODUCTION

Fire Fighting installations described in Para 2.2.1 (i) to (ill) are to be operated manually.Delay in undertaking manual operation due to late detection and or response, mayresult in spread of fire. In automatic sprinkler system, sprinkler heads are providedthrough out the areas to be protected at specified locations such as roof or ceiling,walls, between racks, below obstructions and fitted with water supply lines permanentlychargedwith water under specified pressure. The sprinklers operate at pre-determinedtemperature to discharge water over the affected area below and provide an adequatedistribution of water to control or extinguish fire. Only those sprinklers which are in thevicinity of fire that is those become sufficiently heated operate. Operation of sprinklerresults in flow of water which initiates fire alarm. Thus sprinklers perform two functionsi.e. first to detect fire and then to provide CAnadequate distribution of water to controlor extinguish it. Water distribution from ceiling level, cools down the hot gas whichforms beneath the ceiling of enclosure in which fire is developing. This will preventspread of fire to adjoining areas and contain damage to limited area.

It should not be assumed that the provision of sprinkler system entirely obviates theneed for other means of fighting fire and it is important to consider the fire precautionin the premises as a whole.

The system shall be installed only where there is no danger of freezing of water in thepipes at any time.

Typical layouts of sprinklers have been shown in Figure 11.

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· .9.3 CLASSIFICATIONOF OCCUPANCIES

Sprinklers are provided in industrial and non industrial buildings. The design of sprinklerinstallation depends upon type of occupancy. Buildings are categorized under thefollowing classes for the purpose of designing the installations in IS 15105.

(a) Light hazard class.

(b) Moderate hazard class.

(c) High hazard class.

(d) Storage hazards.

For details of classifications, IS15105 is to be referred. All non-industrial buildings areclassified under light hazard class with the condition "If any occupancy or block withinlight hazard risk is larger than 125 sq. m. in area or having an area less than 125 sq.m.but not bound on all sides by masonary or RCC walls raised up to roof, the buildingshould be classified as moderate hazard.,Air port terminal buildings, car parking areas within building or basement, departmentalstores/retail shops are also classified under moderate hazard class.

In order to satisfy above conditions, all non-industrial buildings shall be designed undermoderate hazard class. Accordingly these specifications cover moderate hazardclass only.

9.4 PLANNING

9.4.1 Extent of Sprinkler Protection:- But for following exceptions, sprinklers shall beprovided in the entire building.(a) Areas, rooms or places where the water discharged from a sprinkler may pose

a hazard.(b) Stair case and lift well.(c) Wash rooms, toilets, W.C.(d) Rooms or compartments where electric switch gear, transformer, DG sets and

A.C.plants have been installed.

In areas under (a) alternative arrangement shall be made. Any part of the building notprovided with sprinkler protection shall be separated by walls ( 225 mm brick or 100mm RCC). Fire doors not less than 1 h in fire resistance shall be provided in theopening of such walls.

9.4.2 Design, Density and Assumed Maximum Area of Operation (AMAO):- This is differentfor different hazards classified in Para 9.3. For moderate hazard, water dischargeshall be at least 5 Itrs.lMin/m2over an assumed area of operation covering 360 mI.

9.4.3 Sprinkler Spacing, Arrangement and Locations:- Sprinkler heads may be installed onceiling and or side walls. For selection of number of sprinkler and their location in agiven area, following factors shall be considered.

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(i) Maximum Area Coverage per Sprinkler(a) Side wall sprinkler(b) Ceiling sprinkler

(ii) Maximum Distance between Sprinklers.(a) Side wall sprinkler(b) Ceiling sprinkler

3.4 m4 m.

(iii) Minimum Distance between Sprinklers 2 m.

(iv) Maximum distance between Sprinklersand Boundary

2 m.

While designing sprinklers installation, the recommendation of sprinkler manufacturershall be considered. Typical layout of side wall sprinklers has been shown inFigure 14

9.4.4 Spacing Below Sprinkler Heads:- Clear minimum space of 0.5 m shall be maintainedbelow the deflector of sprinkler head.

9.4.5 Location of Sprinkler in relation to Building Structure:-

(i) Ceiling Sprinklers Deflector shall not be less than 150 mm and more than 300mm below the ceiling.

(ii) Side wall sprinkler defector shall not be less than 100 mm. and not more than150 mm. below the ceiling.

(iii) If depth of a beam in an area is less than 450 mm. distance at (i) and (ii) shallbe maintained and provision of beam shall not be considered. If the depth of abeam in an area is more than 450 mm, then the beam shall be regarded as aboundary.

9.4.6 ConcealedSpaces:- Spaces between roofs and ceiling more than 0.8 m deep shallbe sprinkler protected as follows:-

(a) Sprinkler heads shall be provided considering the space as any other area in thebuilding.

(b) Sprinkler heads may be connected individually with the range/distributlon pipesbelow, which shall be sized by taking the room and concealed space sprinklerscumulatively.

(c) Sprinkler heads may be connected with indepehdent range/distribution pipesconnected with common feed pipe. The common feed pipes shall be not lessthan 65 mm. dia.

9.4.7 Obstruction below Sprinklers:- Sprinklers shall be fitted under the following types ofobstruction which are either

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(a) More than 0.8 m. wide and less than 150 mm. from the adjacent walls or partitions.OR

.(b) More than 1 m. wide.

9.4.8 Pipe Sizing and Design:- Sprinkler heads located as per para 9.4.3 to 9.4.7 shall beconnected with pipe lines permanently charged with water. Depending upon locationof sprinkler heads and site conditions, sprinkler heads may be connected with rangeand distribution pipes. A number of options have been indicated in Figure - 12.

The pipes connecting the sprinkler heads are to be sized depending upon number ofspririkler heads and arrangement of their connection. Main elements of a sprinklerinstallation are shown in Figure - 11.Various pipes connecting the sprinkler heads aretermed as below.(a) Range Pipe.(b) Distribution Pipe.(c) Main Distribution Pipe.(d) Riser.

Sizes of pipes are to be calculated from various tables and hydraulic calculations givenin IS:15105. Some guide lines are given below.(i) Pipe less than 25 mm. dia is not to be used.(ii) There shall not be more than 6(Six) sprinklers in any range.(iii) Range and distribution pipe nominal sizes are to be selected from Table 9.1 and

Table 9.2 respectively.

TABLE 9.1RANGE PIPE NOMINAL SIZES FOR VARIOUS PIPE LAYOUTS IN

MODERATE HAZARD INSTALLATIONS

Range Pipe Layout. Pipe Nominal Maximum NumberBore (mm) of Sprinklers to

be fed by Pipeof size listed.

(1) (2) (3)

(a) Ranges at remote end ofeach distribution pipe spur:(1) Last two ranges in two 25 1

end-side layout. 32 2(2) Last three ranges in three 25 2

end-side layout. 32 3(3) Last ranges in all other 25 2

layouts. 32 340 4

(b) All other ranges 25 332 440 6

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TABLE 9.2DISTRIBUTION PIPE NOMINAL SIZE IN MODERATE HAZARD INSTALLATIONS AND

MAXIMUM NUMBER OF SPRINKLERS.

Pipe Layout Distribution Pipe Maximum NumberNominal (mm) of Sprinklers to be fed

by Pipe size listed/

(1) (2) (3)(a) Two end side 32 2

40 450 865 16

(b) All other types 32 340 650 965 18

Typical pipe sizes for sprinkler installation have been shown in Figure - 13.

9.4.9 Components of sprinkler system:- Following types of valves are used in the installations.(a) Stop Valve.

(b) Test Valve.

(c) Drain Valve.

(d) Flushing Valve.

(e) Check Valve.

(f) Installation Valve and Alarm Valve.

(g) Pre action valves.

(h) Subsidiary valves.

(i) Alarm Device.

G) Pressure Gauges.

The location of above valves shall be as under.

9.4.9.1 Main Stop Valve:- Only one main stop valve shall be provided immediately after mainalarm valve at a location which is readily accessible.

9.4.9.2 Test Valve:- For testing hydraulic alarm or electric alarm by drawing water from downstream side, test valve shall be connected with down stream of the water flow alarm.

9.4.9.3 Drain Valve:- For drainage of system, drain valve 50 mm. dia shall be provided downstream of installation valve/stop valve or any subsidiary stop valve.

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A common valve can perform the functions of test and drain. The outlet shall beconnected with a 50mm dia G.l.drain pipe alongwith riser pipes as shown in figure No.3 and 4.

9.4.9.4 Flushing Valve:- If the water used for sprinkler is not portable, flushing valves shall beprovided at the end of a distribution pipe. The valve size shall be same as distributionpipe. Valve outlet shall be fitted with a brass plug and extended to not more than 3m. above floor.

9.4.9.5 Check Valve:- Check valve shall be provided where more than one water supply isavailable and same shall be fitted on each water supply pipe.

9.4.9.6 Subsidiary Stop Valve:- Subsidiary stop valve which shall be of the same dia as thepipe line in which they are fitted shall be provided to control water supply to sprinklersof highly sensitive areas like computer rooms.

9.4.9.7 Installation and Alarm Valve:- A sprinkler installation shall be fitted with suitable maininstallation valve to control water supply to the installation. The valve set shall compriseof following:(a) a main stop valve.(b) an alarm valve.(c) a water monitor alarm gong.

The main stop valve shall be placed in the vicinity of the main entrance of the protectedarea at an easily accessible place. The valve shall be secured open by a pad lockedand protected against damage. A location plate shall be fixed near the valve bearingthe followlnq words in raised letters:

SPRINKLERSTOP VALVE

Alarm valve shall be fitted on the main supply pipe immediately after the main controlvalve and before any connection is taken off to supply any part of the installation.

9.4.9.8 Alarm Device:- Water monitor alarm suitable for sprinkler service shall be providedvery close to the installation and alarm valve. This alarm shall be provided on the outside of an external wall. Strainer shall be fitted between the motor nozzle and thealarm valve connection. The water outlet shall be positioned so that any flow of watercan be seen. The alarm device shall provide audibility level of 85 dB above the background noise level.

9.4.9.9 Pressure Gauges:- Pressure gauges shall be provided at each of the followingpoints,

(a) Immediately down stream of the alarm valve.(b) Immediately up stream of the main stop valve.

Stop cock shall be provided before pressure gauges for removal without interruptionof water supply of the installation. Pressure gauges shall be as per 18:3624.

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9.5 SPRINKLERS TYPE

Sprinklers shall be as per IS : 9972 and following types

9.5.1 According to type of discharge (Refer Figure - 15).(a) Conventional pattern.(b) Spray pattern.(c) Side wall pattern.

9.5.2 According to mounting pattern.(a) Pendent sprinkler.(b) Up right sprinkler.(c) Horizontal sprinkler.(d) Ceiling sprinkler.

9.5.3 According to Release Mechanism.(a) Fusible element sprinkler.(b) Glass bulb sprinkler.

'9.5.4 According to Orifice Size.(a) 10 mm.(b) 15 mm.(c) 20 mm.

9.5.5 According to TemperatureRating.

Sprinkler shall have one of the following temperature rating and shall be correspondinglycolour coded.

(a) Fusible Link TypeTemp. Rating °C Colour Code

68/74 Natural.93/100 White.141 Blue.182 Yellow.227 Red.

(b) Glass Bulb Type Colour of bulbTemp. Rating Liquid.

57 Orange.68 Red.79 Yellow.93 Green.141 Blue.182 Marune.204/260 Black.

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9.6 SELECTION OF TEMPERATURE RATING

Temperature rating of a sprinkler should not be less than 300C more than the highestanticipated temperature of the location of installation. Under glazed roofs or wherethere are roof sheets of PVC or similar plastic material, sprinkler shall be rated 790 Cto 1000 C.

9.7 SELECTION OF ORIFICE SIZEIn moderate hazard applications, sprinklers of orifice size 15 mm. shall be used.

9.8 SIZE OF INSTALLATIONSThe number of sprinklers in an installation (excluding sprinklers provided in concealedspaces) shall not exceed 1000 Nos. As far as possible one area shall be controlledby one installation and alarm valve. If the area is quite large, more than one installationand alarm valves should be planned. Details of area controlled by installation valvesshall be exhibited near the installation valves.

If there are more than one block in a campus, each block shall be provided withdifferent installation and alarm valve.

9.9 PROTECTION OF SPRINKLERS

Any sprinkler installed in a position of risk or accidental damage shall be fitted with ametal guard suitable for sprinkler service.

9.10 WATER SUPPLY ARRANGEMENT FOR SPRINKLER

9.10.1 Pump- Details of pumps to be installed for sprinkler installation are given inAppendix 'P:o For large installations, separate jockey pump shall be provided forsprinkler system. All pumps shall have common discharge header. If two electricalpumps are to be provided one non-return valve shall be provided in the header suchthat sprinkler pump will not feed other system.

Separate electrical panel with independent power supply from sub-station shall beprovided. The system controller shall be suitably modified to include operation ofsecond electrical pump. In Para 2.4.1.14.2 following will be added.

(a) Sprinkler pump will start on pressure loss (about 1 kg/cm2) in the sprinklerheader.

(b) If sprinkler pump does not start in pre set time or fails during operation, the mainelectric fire pump shall start and feed water to sprinkler system.

(c) Diesel pump will start and feed water only in case supply to main electric pumpis not available or within a pre set time the main electric pump fails to start orfails during operation. No other pump will be working when diesel pump is inoperation. Audio-visual alarm shall be available to indicate failure of both sprinklerand main electric pump.

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9.10.2 Water Storage Tank- The water storage tank shall be combined for other fire fightingsystem and sprinkler installation and the capacity shall be as given in Appendix 'A'.

9.11 SPRINKLER ANNUNCIATION PANEL AND ALARMElectrically operated alarm shall be provided for indication of operation of sprinkler inan area. Water flow switches shall be installed in main distribution pipes which shallbe wired to sprinkler annunciation panel. In the event of operation of a sprinkler, theflow switch will operate and give signal to the annunciation panel to indicate operationof sprinkler in the area. This will initiate an electrically operated alarm. The systemshall be independent of fire alarm system.

9.11.1 Construction Details

(i) The Panel shall be fabricated out of not less than 1.6 mm thick MS sheet andpowder coated after 7 tank treatment process and shall be totally enclosed dustdamp and vermin proof. Suitable knockout shall be provided for the entry ofcables. The panel shall be designed such that the equipment for power supply,battery charging are housed in independent compartments. Sealed maintenancefree batteries shall also be accommodated inside the panel.

(ii) Indicating lamps control switches, buttons and fuses shall be suitably located inthe front and properly labeled .

(iii) The indicating lamps shall be LED type of following colours. The flow switchoperation conditions shall be indicated by twin lamps.

(a) Red to indicate flow switch operation.

(b) Amber to indicate fault condition.

(c) Green to indicate healthy condition.

(iv) The test buttons to test the indication lamps shall be provided.

(v) The panel shall be solid state type or microprocessor type as indicated in thetender.

(vi) The primary function of the panel shall be to respond automatically to the operationof one or more flow switches to give alarm and to indicate area/areas where thedevice has activated. The operation of one or more flow switches shall result insimultaneous alarm given by the following:-

(a) External alarm hooter(s).

(b) A visible indication on panel.

(c) Audible alarm on panel itself (common for all zones.)

(vii) The panel shall indicate the fault within the system and immediate fault warningshall be given by an audible and visible signal on the panel in case of open circuit,short circuit and earth fault in cable between flow switch and annunciation panel.

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(viii) The panel shall be complete with mimic diagram for the areas covered by differentflow switches. The layout of mimic diagram shall be got approved from Engineer-in-Charge.

(ix) Batt-erybackup with trickle cum boost charger shall be provided for operation ofthe system. Indication of mains failure and low battery voltage shall be provided.The batteries shall be sealed maintenance free. The capacity of the battery shallbe 12 Volt 2 Nos. 24 AH each. All standard accessories shall be provided.

9.12 INSTALLATION

The installation shall be carried out as per Chapter 7 and 11. Following additionalpoints are to be taken care for sprinkler installations.

9.12.1 For fixing sprinkler heads, 15 mm. dia M.S. Socket is to be welded to range pipes atthe locations as per drawings. Dead plug shall be fixed in the socket.

9.12.2 If sprinkler head is to be provided away from range pipe, M.S.Pipe nipple of suitable <

size be used to extend the sprinkler head and socket is welded at desired location.

9.12.3 After completion of work in sections, pressure testing at 7.5 kg/cm2 pressure shall becarried out for 24 hrs.

9.12.4 After completion of the entire work, pressure testing of entire pipe work shall be carriedout for 24 hrs.at a pressure of 7.5 kg/cm2. The drop of pressure up to 0.5 kg/cm2 shallbe accepted.

9.12.5 The lines shall be flushed 'before completion of building work so that any foreign matterwhich might have entered the system is taken out. The pressurization pump (JockeyPump) be operated and valves opened at different locations.

9.12.6 During occupation of the building, sprinkler heads shall be provided in place of deadplugs. Taflon tape shall be used on threaded portion. The sprinkler heads shall beproperly tightened in the socket.

9.12.7 When all sprinklers heads are installed, pressure is built up in the system bypressurization pump slowly and in case no leak is found, desired pressure is developedand maintained. In case any leak is detected, the same shall be attended beforepressurising the system further.

9.13 COMMISSIONING

As soon as the work is complete, the system shall be commissioned and madeavailable for use in accordance with Para 11.6.

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CHAPTER-10ELECTRICAL WORK

10.1 SCOPE

This chapter covers the requirements for the electrical works associated with firefighting installations, namely, motors. switch boards, power cabling, control wiring,earthing and remote control-cum-indicating panels.

10.2 GENERAL

(i) Unless otherwise specified in the tender specifications, all equipments andmaterials for electrical works shall be suitable for operations on 415 V / 240 V:!: 10%(3 phase/single phase), 50 Hz. AC system.

(ii) All electrical works shall be carried out complying with the Indian ElectricityRules, 1956 as amended to date.

(iii) All parts of electrical works shall be carried out as per appropriate CPWDGeneral Specifications for Electrical works, namely, Part I (Internal) 2005, Part II(External) 1994 work, and Part IV (Sub-station), 1982 all as amended to date.

(iv) All materials and components used shall conform to the relevant IS specificationsamended to date.

10.3 POWER SUPPLY

Following 3 phases, 415 Volts, 50 Hz., supplies shall be made available for fire fightinginstallations directly from sub-station.

(i) Normal supply for fire pumps near under ground tank.

(ii) Essential supply for terrace pump.

In buildings where power failures are likely to be for long duration, in order to facilitateoperation of Jockey Pump and maintain pressure in the system, essential supply forJockey Pump and control for diesel engine shall be made available in the pump house.

10.3.1 Power cable of adequate size shall be laid from the sub-station directly to the switchboard of above pumps. Independent supply shall be provided for water supply pumpsif installed in the same pump house. The power supply for fire fighting is not to beused for any other purpose.

10.3.2 If the fire pump house, is away from the sub-station building, the route of the cableshall not pass under the building or permanent structure. Cable shall be laid along theroute which is safe from fire.

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10.3.3 Sufficient spare power shall always be available to drive pumping sets at all timesthroughout the year. Suitable capacity ACB/MCCB/Fuse Switches/Switch Fuses shallbe provided in the electrical panel for extending supplies to fire pumps. Such switchesshall be suitably marked with "FIRE SWITCH" and shall not be switched Off withoutpermission/intimation to appropriate authority. In case any maintenance work is to becarried out on the electrical panel where from supplies to fire pumps have been.extended, alternative arrangement shall be made to ensure that power supply to firepumps continue to be available for operation any time.

10.4 MOTORS

The motors shall be squirrel cage AC induction type. The motors shall be suitable forcontinuous duty and rating necessary to drive the pump at 150 percent of its rateddischarge with at least 65 percent rated head. The motor shall be totally enclosed fancooled type confirming to protection clause IP 21 of IS : 4691. The class of insulationshall be IF'. The synchronous speed shall be 1500/3000 rpm as per requirement ofthe pump. The motor shall conform to IS:325.

10.5 MOTOR STARTER

(l) The motor starter shall conform to IS: 1822"Motor starters of voltage not exceeding1000 volts" and shall be air insulated and suitable for 415 V, .± 10%, 50 Hz., 3phase AC supply and shall be integrated in the panel.

(ii) Starter for the motor shall be direct on line (D.O.L) for motors up to and including7.5 H.P. rating and automatic star-delta type for motors of higher ratings unlessotherwise specified in the tender specifications.

(Hi) Each starter shall be provided with the following protections: -

(a) Thermal overload on all the three phases with adjustable settings,

(b) Independent single phase preventor. (current sensing type).

(lv) Adequate number of extra NO.1 NC' contacts for interlocks, indicating lamps,remote operation etc. shall be provided on the starter/ contactor.

(v) Un.j;-:f voltaqe/No volt trip snait not be provided.

10.6 SWITCH BOARDS

(i) The main switch board shall be floor mounted, free standing or wall mountedcubical type and shall be factory built fabricated by one of the approved switchboard manufacturer. The board shall be fabricated from 2.0 mm. thick CRCAsheet and powder coated after 7 tank treatment process. The board shall befabricated with IP 42 degree of protection. It shall be suitable for termination ofthe incoming cable(s) from bottom.

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(ii) The capacity of switch gear shall be suitable for the requirements of motor fed/controlled. Starting currents shall be duly considered.

(iii) Switch fuse units shall be used upto and including 32 A and SDFU shall be usedfor 63 A and above. ACB shall be used for 630 A and above ratings. AlternativelyMCCBs of appropriate fault level may be provided.

(iv) All switch fuses/SDFU shall be of AC 23 duty as per IS: 4064-1978 as amendedupto date. They shall be complete with suitable HRC cartridge type fuses.

(v) Switch boards shall house starters for motors with independent current sensingtype single phase preventor for each starter.

(vi) Volt meter with selector switch, a set of indicating lamps and fuses' for voltmeterand lamps shall be provided. Ammeter with CTs, and selector switch shall beprovided with each motor starter. Instruments shall be flush mounted with thepanel and have a class index not higher than 1.0. The instruments andaccessories shall be provided whether or not specifically indicated in the tenderspecifications.

(vii) The fabrication of switchboard shall be taken up only after the drawings for thefabrication of the same are approved by the Engineer-in-charge.

(viii) Switchboards shall be fabricated as per specifications indicated in sub-para above.

(ix) The layout shall be designed for convenient connections and inter-connectionswith the various switchgear. Connections from individual compartments to cablealleys shall be such as not to shut down healthy circuits in the event of maintenancework becoming necessary on a defective circuit.

(x) Care shall be taken to provide adequate clearances between phase bus bars aswell as between phase bus bars, neutral and earth.

(xi) Where terminations are done on the bus bars by drilling holes therein, extracross section shall be provided for the bus bars. Alternatively, terminations maybe made by clamping.

(xii) Provision shall be made for proper termination of cables at the switchboardssuch that there is no strain either on the cables, or on the terminators. Cablesconnected to the upper tiers shall be duly clamped within the switchboard.

(xiii) Identification labels shall be provided aqainst each switchgear and startercompartment, using plastic/aluminium engraved labels.

(xiv) Metallic danger board conforming to relevant IS shall be fixed on each electricalswitchboard.

10.7 SYSTEM CONTROLLER

For controlling operation of pumps as per Para 2.4.1.14 and indicating fault, system

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controller shall be provided. The system controller shall consist of relays timer, contactorsetc and shall be designed to operate the fire pumps with interlocking and faultindication as described in Para 2.4.1.14. Annunciation window shall be provided toindicate following faults.

(i) Low water level in UG tank .

(ii) Low water level in terrace tank.

(iii) Main pump failed to start.

(iv) Main pump failed during operation.

(v) Diesel pump failed to start.

(vi) Diesel pump failed during operation

(vii) Supply to Main Pump failed

(viii) Supply to Pressurisation Pump failed

(ix) Supply to Terrace Pump failed.

Suitable sensors, differential pressure switches, monitors shall be provided at respectivelocation. The control system shall be operational on 12 Volt/24 Volt DC batteries ofengine starting. Battery chargers shall be provided to ensure that the batteries remain,charged. Batteries shall be sealed maintenance free type.

10.8 REMOTE INDICATING PANEL

(i) The remote indicating panel shall be provided in the fire control room. This panelshall have necessary status indication of all electric motors.

"'(ii) Back indication to show the status of operation of all the motors and also pressure

in the system, water level in under ground and over head tank etc. shall beprovided.

(iii) Panel shall be fabricated from not less than 1.6 mm thick CRCA sheet andpowder coated after 7 tank treatrnen. process. The panel shall be dust, dampand vermin proof. This shall be of wall mounting type. This shall be completewith necessary termination arrangements, multicore cables, tag blocks, controltransformer, designation plastic labels, double earth studs etc. as required.

10.9 POWER CABLING

(i) Unless otherwise specified, the power cables shall be XLPE insulated, PVCouter sheathed aluminium conductor, armoured cables 1100V grade. The powercables shall be of 2 core for single phase, 4 core for sizes upto and including25 sq.mm, 3-1/2 core for sizes higher than 25 sq.mm for 3 phase.

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Alternatively, XL.,PE/PVC insulated copper cable (single core/multicore un-armoured) of grade 1100 V shall be used.

(ii) Power cables shall be of sizes to meet the starting and running current of motorsfed and shall be as approved by the Engineer-in-Charge, after taking intoconsideration the load, the length of cabling.

(iii) Cables shall be laid in suitable metallic trays suspended from ceiling, or mountedon walls. Cable ducts shall not be provided in pump rooms. Cable trays shallbe of perforated steel sheet with adequate structural strength and rigidity.Necessary supports and suspenders for cable trays shall be provided by thecontractor as required.

10.10 CONTROL WIRING

(i) Control wiring shall be done using ISI marked PVC insulated and PVC sheathed,2.5 sq.mm, 250 V grade, armoured multi-core copper conductor cable. Thecontrol cable shall also be laid in the same manner as power cable.

(ii) The number and size of the control cables shall be such as to suit the controlsystem design adopted by the contractor.

(iii) Runs of control wires within the·switchboard shall be neatly bunched and suitablysupported/clamped. Means shall be provided for easy identification of the controlwires.

(iv) Control wiring shall correspond to the circuitry/sequence of operations andinterlocks approved by Engineer-in-Charge.

10.11 EARTHING

(i) Provision of earth electrodes and the type of earthing shall be as specified in thetender specifications.

(ii) The earth work shall be carried out in conformity with CPWD Specifications forElectrical works (Part-I), Internal 2005.

(iii) Metallic body of all motors, medium voltage equipments and switch boards shallbe connected by two separate and distinct earth conductors to the earth stationsof the installations. Looping of such body earth conductors is acceptable fromone equipment, or switch board to another.

(iv) The size of earth conductors for body earthing of equipments shall be 2 Nos.6 mm dia copper wire/2 Nos. 25 x 3 mm G.l.strip

(v) Armouring of cables shall be connected to the body of the equipments/switchboard at both the ends. Compression type glands shall be used for all suchterminations in the case of PVC cables.,

10.12 PAINTINGAll panels shall be supplied with the manufacturer's standard finish painting or asindicated in the Schedule of Work.

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CHAPTER-11

INSTALLATION, TESTING ANDCOMMISSIONING

11.1 SCOPE

This chapter covers the requirement of Installation, testing and commissioning of firefighting system.

11.2 PREPARATION AND APPROVAL OF DRAWING

On award of the work, the contractor has to prepare working drawings as per Para1.17.2 and submit to the Engineer-in-charge for approval. The work is to be executedas per approved drawings. The stage of approval of drawings is therefore very important.All drawings should be carefully and critically examined before approval. Therequirements of various components of fire fighting system have been described inprevious chapters dealing with the components. However generally following points areto be taken care while examining and approving the drawings.

11.2.1 Site survey should be carried out in detail.

11.2.2 In addition to building plans, layout plan along with landscape plan/horticulture plan andother services plans should be consulted while deciding route of under ground pipesfrom pump house and around the building.

11.2.3 As far as possible, under ground pipe are not to be laid under road, pavement, buildingand long open spaces. The locations along road, foot path in earth may be preferred.

11.2.4 The location of yard hydrants, fire service inlet and fire service connection are to bedecided based on consideration of Para 2.4.1.8 to Para 2.4.1.10. However necessaryadjustments are to be made so that these components do not become hindrance invehicular movement and entrance to the building. Requirement of other building servicesare also to be given due consideration. Symmetry should be maintained for aestheticconsiderations.

11.2.5 Pipe sizes are to be decided in accordance with provision of Para 2.4.1.2 and 4.5.2.

11.2.6 Pump House:-The layout of equipment in pump house is very important from operationand maintenance considerations. The requirement of pumps and engine have beendescribed in Chapter 5 and 6. In case other equipment's i.e. water supply pumps etc areto be installed in the same pump house, sufficient space shall be left for them as well.The dimensioned foundation drawing .of pumps should be available for marking in thepump room layout. The layout is to be prepared in such as a way that it should bepossible to maintain any equipment without disturbing the adjoining equipment. Electricalpanels are to be installed at a location which is easily accessible near the entrance tothe pump house and there should be no possibility of water dripping over or near theelectrical panel. Typical layout of fire pump house is shown in Figure - 10.

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11.2.7 TerracePumps:- The location of pumps and terrace pipe may be decided keepingin view location of terrace tanks for fire fighting and other services. The pipe line shouldnot cause undue hindrance for movement of maintenance personnel at the terrace.

11.2.8 Electrical Panel:- Complete wiring drawing, layout etc. are to be examined to ensurethat provisions of agreement are incorporated in the drawing. Sizes of various paneland mounting arrangement may be decided keeping in view ease of operation andaesthetic consideration as well.

11.3 INSTALLATION:-The requirements of installation of various components have been described in previouschapters. However following precautions are to be taken during execution of the work.

11.3.1 The pump and motor/engine are to be perfectly alligned on the base plate so that thereis no vibration during operation. All nuts, bolts, washers shall be of adequate size andgalvanised.

11.3.2 The pipe supports should be decided in a way that the weight of pipes and valves arenot transferred to the pumps and supports do not cause hindrance in movement insidethe pump house. As far as possible, floor supports may be provided in pump house.

11.3.3 All valves shall be installed at a height and in a position that their operation by righthand is conveniently possible.

11.3.4 All pressure gauges should be installed so that the dial is vertical and is visible whileentering the pump house.

11.3.5 Electrical panels should not be installed at floor level. The panels shall be sufficientlyraised above ground level. If panels are to be mounted on wall, an angle iron frameshall be provided so that atleast 75 mm space is left behind the panels. The panelsshall be easily approachable .

11.3.6 Cable trays are to be used for laying of power and control cable inside pump house.No cable is to be laid at floor level/in trench. Cable tray layout should give neatappearance. All cable tray shall be adequately supported from the ceiling /floor.

11.3.7 Drain pump shall be installed in the sump provided as per Para 3.2.2 (viii). The pumpshall operate automatically for which water level sensor shall be provided.

11.3.8 In no case any structural member i.e. RCC wall, column, beam and floor are to bedamaged during installation. Mechanical fasteners are to be used for grouting support.U.G. tank wall is not to be us-edfor any support. No pipe/cable is to cross the pumphouse below ground level. Openings above ground level are only to be used for thispurpose.

11.3.9 The engine installation work shall be carried out in accordance with the requirementof engine manufacturer and be got approved by the manufacturer or their authorisedservice centre. The exhaust pipe should be suitably extended out side the pumphouse so that smoke does not effect nearby structure. Fuel tank shall be properly

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supported and located in a way-that the same does not cause hindrance in movementin the pump house.

11.3.10 While excavating for laying of external pipes, suitable sign board! barricading shall beprovided to ensure that no person falls in the trench.

11.3.11 The width and depth of trench shall be adequate for laying the pipe 1m below groundlevel.

11.3.12 No earth or any other matter is to be allowed to enter the pipes. The ends shall bekept closed always.

11.3.13 The anticorrosive treatment is to be applied on the entire length laid under ground inaccordance with para 7.12. The treatment is not to be damaged.

11.3.14 Pressure testing is to be carried out in sections before filling the earth back in thetrench.

11.3.15 The earth filling is to be done in layers of 20 ern each and properly rammed so as toavoid possibility of settlement. Surplus earth! malba shall be removed from the siteby the contractor.

11.3.16 Where pipes crossing road likely to have heavy traffic, additional protection over pipeshall be provided to ensure that pipe is not damaged.

11.3.17 External hydrants and fire service connection! inlet shall be located parallel to thenearby road! foot path so as to give proper appearance. Foundation shall be raisedfrom below ground level and shall be properly plastered in plumb. The hydrants shallbe facing the road! approach. There shall be no obstruction in. approaching thehydrants for operation.

11.3.18 Risers shall be parallel to the wall and in plumb. Adequate supports shall be providedfrom the wall. Opening around the pipe in slab shall be filled with CC and finished withplaster.

11.3.19 Internal hydrant shall be provided in the centre and facing out side for ease of operation.Sufficient space shall be provided around the handle for operation. There shall be nohindrance in moving the first aid hose reel.

11.3.20 Terrace pipes shall be supported on CC pedestals of adequate height. The pipe routeshall be such as no hindrance is created in movement at the terrace. Pipes shall besufficiently raised above terrace. It is-to be ensured that water proofing is not damagedduring laying of pipes.

11.4 TESTING

11.4.1 Initial Testing

11.4.1.1 During laying of pipes, the same shall be subjected to 10 kg./cm2hydraulic pressurefor a period of 24 hours, in sections.

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11.4.1.2 After completion of the work, 'all valves/ fittings shall be installedln'position and entiresystem shall be tested for 24 hours at a pressure of 10 kg/ crn-. The drop of pressureup to 0.5 kg/cm2 shall be accepted.

11.4.2 Final Testing

11.4.2.1 After completion, all operation checks as per Para 2.4.1.14 shall be carried out forautomatic operation of the systems. For this purpose, landing valves may be openedat different locations. The exercise shall be repeated couple of times to ensure troublefree operation of the system.

11.4.2.2 Flow Test :- The design flow of pumps shall be checked. The pump shall be operatedafter opening a number of landing valves at different locations. Design pressure is tobe maintained in the pump house. Water discharge is to be measured by drop in levelin UG tank for a certain period. All pumps shall be tested one by one. The flow rateshall be not less than as specified while maintaining the design pressure in pumphouse.

11.5 INSPECTIONBY LOCAL FIRE OFFICER

After completion of the work and testing to the entire satisfaction of Engineer-in Charge,the installation shall be offered for inspection by Chief Fire Officer or his representative.Testing as desired by the Fire Officer shall be carried out. The contractor will extendall help including manpower during testing. The observation of Chief Fire Officer whichare a part of agreement shall by attended by the contractor. Nothing extra is to be paidfor testing as above.

11.6 COMMISSIONING

11.6.1 Flushing the System: • Before commissioning, the entire system shall be flushedto ensure that any earth/ foreign matters which might have entered during installationare taken out. For this, pump may be operated and valves opened at different locations.

11.6.2 As soon as the work is complete, the system shall be commissioned and madeavailable for use. Requirement of fire fighting installations is equally important duringoccupation of the building. If the building is to be occupied in part, fire fighting systemof building completed shall be commissioned by isolating the system of underconstruction portion of the building. '

11.6.3 The fire fighting system shall be maintained and manned from the very first day of itscommissioning.

11.6.4 Any defects noticed during the warranty period shall be promptly attended by thecontractor and availability of the system at all time is to be ensured.

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APPENDIX A

REQUIREMENT OF FIRE FIGHTING INSTALLATION (AS PER NBC-2005)

S. Type of Building Capacity Pump Capacity,•..No. Occupancy Q) Type, Number~e•..- C

'0..EQ) en

(j) '- e co o I/).9-

Q) '- •..EQ) 0 -g, :;::; ~ .lo::

0::: I/) o co .9- eiX I E:t:::

~Q) e I/) ...J .lo::I/) Q) ~

"0 0 Q) .lo:: e'- - '- Q)0 $ ~:J - e ~ oI o -c :::i ~ ~.lo:: Q) C9 '-e ~~

o ::::>co '- '-'- coC9 '- co

~Q) Q)

::::> z z

1 2 3 4 5 6 7 8 9 10 11

(1) Residential

(i) Less than 15 m R NR NR NR NR NR 5000 NR 450in height. (5000) (450)

(ii) 15 m and above R NR R NR NR NR 25000 NR 900but not exceeding 35 min height.

(Hi)Above 35 m but R R NR NR NR 75000 5000 1620lpm NRnot exceeding 45 m (E-1)in height (5000) (D-1)

(iv) Above 45 m but R R NR R R 75000 10,000 2280lpm NRnot exceeding 60 m E-1in height D-1

(v) Above 60 m in R R NR R R 100,000 25,000 2280lpm NRheight. E-2

D-1

(2) Educational(Other thanHospitals)

(i) Less than 15 min height.

(a) Ground plus one NR NR NR NR NR NR 5000(*) NR 450(*)storey

(b) Ground plus R NR NR NR NR NR 10,000 NR 450two or more storeyes (5000) (450)

(ii) 15 m.and above R NR R NR NR NR 25000 NR 900but not exceeding30 m in height

(61) .

S. Type of Building Capacity Pump Capacity,No. Occupancy '- Type, NumberQ)

32c'- - '0..

EQ) c (J)E eo a.

Q5 '- '- .5:2 rJ)Q) Q) 0 '0 co ~ E .::.:.0::: rJ) o :>. cii: :r: E :5 .Q.

~Q) c rJ) .::.:.~

'0 0 Q)rJ) Q) '- - .b .::.:. c Q)0~ ~

:J C~ c:r: c <t: :.J ~ ~.::.:.

Q) o •....c ~~

o ::J~ '- '-o '- eo eo~

Q) Q)::J Z z

1 2 3 4 5 6 7 8 9 10 11

(3) Hospital &Nursing Home.

(i) Less than 15 min height with plotarea upto1000 m2

(a) Upto ground R NR NR NR NR NR 2500 NR NRplus one storey (2500)with no beds

(b) upto ground R NR R NR NR NR 5000 NR 450plus one storey (5000) (450)with beds

(c) Ground plus two R NR R NR NR NR 5000 NR 450or more storeys (5000) (450)with no beds.

(d) Ground plus two R R NR NR NR 50,000 5000 1620lpm NRor more storeys E-1with beds (5000) 0-1

(ii) Less than 15 m R R NR R NR 100000 10000 1620lpm NRin height with plot E-1area more than 0-11000 m2

(iii)15 m. and above R R NR R R 100000 20000 2280lpm NRbut not exceeding E-124 m in height 0-1

(iv) Above 24 m but R R NR R R 150,000 20,000 2280lpm NRnot exceeding 30 m E-2in height. D-1

(62)

s. Type of Building Capacity Pump Capacity,No. Occupancy

•...Type, NumberQ)

32c::•... - .0..EQ) c:: C/)

Ci5 •... c:: co o (/).E-•... •...

Q) Q) 0 "0 :;::; ~ E ~(/) o >- co c::0:: il: - .9-I E ::i ~Q) c:: (/) ~

(/) - :s: "0 0 Q) ~ c::Q) •... - •... Q)0~

0~ :J - c::

~ oI 0 <t: ::i ~ co~ (9 •...

Q) •...c:: ~~

o ::>~ •... •...•... co co(9 ~

Q) Q)::> z z

1 2 3 4 5 6 7 8 9 10 11

(4) AssemblyBuilding.

(i) Less than 10min height

(a) Upto 300 persons R NR R NR NR NR 10,000 NR 450(5000) (450)

(b) More than 300 R NR R NR NR NR 15,000 NR 900persons (5000)

(ii) Above 10m but R R NR NR NR 50000 5000 2280lpm 450not exceeding 15 m E-1in height. (5000) D-1 (450)

(Hi)Above 15 m but R R NR R R 75,000 10,000 2280lpm NRnot exceeding 24 m E-1in height. D-1

(iv) Above 24 m but R R NR R R 100,000 20,000 2280lpm NRnot exceeding E-230 m in height. 0-1

(5) . BusinessBuilding

(i) Less than 10m R NR R NR NR NR 10,000 NR 450in height (5000) (450)

(ii) Above 10m but R R NR NR NR 50000 5000 2280lpm 450not exceeding 15 m E-1in height (5000) 0-1 (450)

(Hi)Above 15 m but R R NR R R 75,000 10,000 2280lpm NRnot exceeding 24 m E-1in height 0-1

(63)

s. Type of Building Capacity Pump Capacity,•...No. Occupancy Q) Type, Number

32c:•... C.0..

EQ) C/)Q) •... c: co () If)

.9-•... •...Q) Q) 0 -g, :;:; ~ E ~a:: If) o co .9- e:0:: J: E

:!:

~e: If) --IQ)

~"0 0 Q) ~ ~

If) Q) '- :; '- e: Q)0~ ~ - e:

~ cJ: c « ::J ~ co~ (9 •...

Q) '-e: ~~o :J~ •... '-

(9•... co co~ Q) Q)

:J Z z

1 2 3 4 5 6 7 8 9 10 11

(iv) Above 24 m but R R NR R R 100,000 20,000 2280lpm NRnot exceeding E-230 m in height D-1

(v) Above 30 m in R R NR R R 200,000 20,000 2850lpm NRheight E-2

0-11'.

Legend:R- Required to be providedNR- Not required to be providedE-1- One electrically operated main fire pump.E-2- Two electrically operated main fire pump.0-1- One diesel engine main fire pump.

Note:(1)(*) To be provided if basement area exceeds 200 m2

(2) Value given in paranthesis shall be added if basement area exceeds 200 m2

(3) The buildings indicated in Col.(2) shall include the following buildings.

(A) Residential Buildings Apartments, Dormitories, Hostels, Barracks(Does not include Hotels.)Schools and Institutions.Hospital, Nursing Home, Sanatoria.Buildings used for Recreations, Social,Religious, purpose e.g. Theatre, MotionPicture Houses, Assembly Hall, Auditorium,Exhibition Hall, Museum, Restaurant, Place ofWorship, Station, Terminals of Air etc.

(B) Educational(C) Hospital and Nursing Home(D) Assembly Buildings

(64)

(E) Business Buildings Office, Banks, Professional Establishments,Laboratories, Research Establishments,Libraries, Test House. Computer installation,Telephone Exchanges etc.

(4) Buildings at B,C and 0 in Note 2 are not permitted more than 30 m. in height.

(5) Automatic Sprinkler. Automatic Sprinkler shall be provided in basement if area is 200 m2and above.

(6) Typical system with one electric and one diesel fire pump shall be as shown in Fig 1 and 3

(7) Typical system with two electric and one diesel fire pump shall be as shown in Fig 2 and 4.

(65)

APPENDIX -8TERMINOLOGY

For the purpose of this specification, the following definitions shall apply.

1. Static Water Tank: Underground or surface water tank, constructed to store water for firefighting purpose.

2. Terrace Tank: A concrete/masonary/plastic steel tank constructed or erected on terraceof building for fire fighting purpose.

3. Priming Tank: A small tank erected in/over the pump house above the fire fighting pumpsto keep the pump casing and suction of the fire pump permanently flooded.

4. Foot Valve: A valve fixed in the suction strainer of the fire pump which opens only inwardsto allow in-rush of water into the pump suction and fire pump when the fire pump isactuated automatically/manually.

5. Jockey Pump: A pump of small capacity which is set to come into operation, automaticallywith drop in static pressure in the system and to automatically stop when the non-returnvalve on delivery side.

6. Terrace Pump: An electricity driven pump, located on the terrace connected to a terracetank with gate valve on suction side and to the internal hydrant system with non-returnvalve on delivery side.

7. Fire Pump: An electric/diesel pump installed at static water tank to charge the wet risersystems.

8. Stand-by Pump: A pump of same capacity as fire pump, driven by a diesel engine orconnected to any other alternate source of electric supply.

9. Pump Panel: Panel comprising starting, stopping and indicating devices of fire pumps.

10. Dry Riser: An arrangement of fire fighting within the building by means of vertical risingmains not less than 100 mm. internal dia with landing valves on each floorllanding whichis normally dry but is capable of being charged with water usually by pumping from fireservice appliances.

11. Down-Comer: An arrangement for fire fighting within the building by means of down-comer mains of not less than 100 mm internal dia, connected to terrace tank throughterrace pump, gate valve and non-return valve and landing valves on each floorllanding.It is also fitted with inlet connections at ground level and air release valve at roof level forbeing capable of charged with water by pumping from fire service appliances.

12. Wet-Riser-cum-Down Comer: An arrangement for fire fighting within the building by meansof vertical rising mains of not less than 100 mm. internal dia with landing valves on eachfloorllanding connected to terrace tank for fire fighting purpose, through a terrace pump,gate valve and non-return valve near the tank and to a fire pump, gate and non-returnvalves, over the static tank.

(66)

13. Wet-Riser: An arrangement for fire fighting within the building by means of vertical risingmains of not less than 100 mm. internal dia with landing valves on each floor/landing 'forfire fighting purposes and permanently charged with water from a pressurized supply.

14. Landing valve: An assembly comprising valve(s) and outlet(s) connection from a risersystem.

15. Hose Reel: Fire fighting equipment, consisting of a length of tubing fitted with a shut-offnozzle and connected to a reel, with a permanent connection to a pressurized watersupply.

16. Air Release Valve: A device by which the trapped air inside a riser main is expelled bywater as the system is being charged.

17. Air Vessel: A cylindrical vessel installed in the wet-riser system at the bottom and toplevels to counteract the water hammer effects.

18. Pressure Switch: A switch connected on delivery line of fire pump or in the body of hydro-pneumatic tank at pre-set pressure level so designed to automatically start the fire pumpor jockey pump, as the case may be, when the pressure in the system falls below the pre-set level.

19. Fire Service Inlet: A 2- or 3-way collecting head with non-return valves fitted to the downcomer/wet riser main, so that in case of need, fire service can directly pressurize thesystem with their pump.

20. Fire Service Connections: This is a 4-way collecting breeching with blank caps (withoutnon-return valve) fixed to a 150 mm dia pipe which is connected to the fire tank for fillingfrom external source:

21. Automatic Fire Detection and Alarm System: Fire alarm system comprising componentsfor automatically detecting a fire, initiating an alarm of fire and initiating other actions asappropriate.

22. Automatic Sprinkler System: A system of water pipes fitted with sprinkler heads atsuitable intervals and heights, and designed to actuate automatically, control or extinguisha fire by the discharge of water.

23. Building, height of: The vertical distance measured in the case of flat roofs, from theaverage level of the ground around and contiguous to the building or as decided by theAuthority to the terrace of the last livable floor of the building adjacent to the external wall;and in the case of pitched roofs, upto the point where the external surface of the outer wallintersects the finished surface of the sloping roof; and in the case of gables facing theroad, the mid-point between the eaves level and the ridge. Architectural features servingno other function except that of decorations, shall be excluded for the purpose of measuring \heights.

(67)

APPENDIX -C

MAINTENANCE AND OPERATION OF WET RISER SYSTEM

C.1 INTRODUCTIONThis appendix cover suggestive guidelines for maintenance and operation of the wetriser system.

C.1.1 Objective:-

(i) To keep the entire system fully operational and functional at all times.

(ii) In case full system can not be kept functional for unavoidable reason, as muchas possible, the installation shall be retained functional by isolating the defectivesection.

C.2 MAINTENANCE REQUIREMENT OF SYSTEM COMPONENTSFor maintaining fire fighting system following points are to be taken care of:-

C.2.1 To ensure availability of water in UG tank and terrace tank all the time and to maintainthe tanks in clean condition.

C.2.2 To ensure that the piping system is free from leakage. Any portion found to be leakingis to be isolated, rectified and connected with healthy system in shortest possible time.

C.2.3 Toensure that all pumps are in good running condition. Any pump found to be defectiveis to be isolated by ctosing valves and attended immediately and put in to service in .minimum time.

~ G.2.4 To ensure availability of power for electrical pumps, working of starters, switch gearand other electrical components.

C.2.5 To ensure healthiness of diesel engine starting system, battery voltage, battery chargerand availability of adequate diesel for engine operation.

C.2.6 To check all landing valves of internal and external hydrants, isolating valves andreplace the defective ones whenever necessary

C.2.? To check automatic operation of entire system by opening landing valves at differentlocations.

C.2.8 To conduct fire drill at regular interval.

C.3 PERIODICAL TESTING

For achieving the objectives of Para C.1.1 and meeting the requirement of Para C.2periodical testing and checking the system is essential. Various activities· and theirduration have been tabulated in Table C.1.

(68)

C.4 PROCEDURE

C.4.1 Though the fire fighting system operation is automatic, however for daily checking andattending to the system in case of operation, a trained pump operator shall be availableround the clock.

C.4.2 Operation and Maintenance instructions shall be available in the pump room and firecontrol room.

C.4.3 Water for fire fighting purpose is not to be used for any other purpose. However inorder to avoid stagnation, the same shall be changed I cleaned regularly.

C.4.4 Maintaining Diesel Engine is very important for the system operation since during fire,power supply is deliberately or un-deliberatelyswitched off. Annual MaintenanceContract(AMC) of engine shall be given to the authorised service centre of engine manufacturer.Adequate diesel should either be available in the pump house or near by so thatoperation is not discontinued for want of diesel.

C.4.5 If any out let is found to be defective and replacement is not easily available the wholeassembly should be removed and be replaced by blank off plate so that the systemremain operational.

C.4.6 Hose reels shall be subjected to regular inspectionto ensure that all valves are functional,out let nozzle not choked. At least once in a year the same shall be subjected tooperation to ensure that hose reel is in good condition and that the coupling joints arewater tight. Flow should also be checked for the leakage of hose reel.

C.4.7 All isolating valves shall be checked for operation. The valves in closed position beopened and closed couple of times and the valves in open position be closed andopened couple of times so that when required , the valves perform their function.

C.4.B Hose pipes and their couplings shall be checked to ensure there is no leakage duringtheir use. The female coupling cam tooth mechanism be operated and lubricated forensuring ease of operation.

CA.9 Power supply to the pump house is not to be discontinued for any reason. Alternativearrangement shall be made in case any feeding switch gear is under repair Ireplacement.

CA.10 It has to be ensured that there are no obstructions in front of the hydrants impendingaccessibility .

C.S FIRE DRILLFor making the users familiar with the system, fil~ drill shall be carried out once in jsix months. Local fire service and nodal officers ir, charge of various parts of thebuilding shall be involved in conducting fire drill. Operation of the system shall bedemonstrated so that all users are confident of the system and aware of their dutiesand responsibilities during fire.

(69)

· TABLE C.1PERIODICAL TESTING AND MAINTENANCE CHART

SI.No. System Component Activity Duration

1. Water Tanks (i) Level Check Daily

Oi) Cleaning Once in a year

2. Pumps (i) Running Daily

(ii) Test flow Annually

(iii) Lubrication Quarterly

3. Engine (i) Running Daily

(ii) Lubrication Quarterly

(iii) Battery Weekly

(iv) Fuel Tank Daily

(v) Servicing As per enginemanufacturer'srecommendations.

4. Motor (i) Running Daily

(ii) Starter Weekly

(iii) Insulation Resistance Once in a year

5. Piping (i) Pressure Daily

(ii) Flushing once in a year

6. Valves (i) Operation Monthly(Landing and Isolation)

7. Control System (i) Operation Monthly

(ii) Connection and Quarterlysystem components

8. Hose Reel and Hose Pipes (i) Physical check Monthly

(ii) Operation check Annually

(iii) Replacement Depending uponphysical condition.

9. Fire Brigade Connectionsl Inlet (i) Physical check Monthly.

(ii) Operation check Annually.

10. Instantaneous Coupling (i) Physical check Monthly.

(ii) Lubrication Once in Six months.

11. Painting (i) Out Door Once in a year.

(ii) In Door Once in two years.

(70)

APPENDIX-D

MAINTENANCE OF AUTOMATIC SPRINKLER SYSTEM

0.1 Maintenance of other fire fighting installation has been described in Appendix-"C'which hold good for sprinkler installations also. In addition following points shall betaken care.

0.1.1 Sprinkler shall not be re-conditioned or repaired. Used and/or defective sprinklers shallbe replaced by new ones.

0.1.2 Sprinklers shall not be painted after installation.

0.1.3 Spare Sprinklers - A stock of spare sprinklers shall be kept in Fire Control Room sothat prompt replacement is possible after operation/damage of a sprinkler head. Aminimum of 5% of the installed capacity or 25 sprinklers of all types which ever ismore shall be kept in stock.

Spanners for sprinklers and taflon tape shall also be kept alongwith spare sprinklersin readiness.

0.1.4 As far as possible, the installation shall be maintained in operating condition by blankingoff pipe work feeding the inoperative part or parts where work is taking place.

0.1.5 The inoperative part, if defective shall be attended to and connected with the operativesystem.

0.1.6 Action following sprinkler operation

0.1.6.1 Following the operation of sprinklers, the operated head shall be replaced with newones and water supply shall be restored.

0.1.6.2 The sprinklers in the vicinity of the operated sprinklers shall also be checked fordamage by heat or any other cause and replaced if necessary.

0.1.6.3 The sprinkler pump shall not be shut off until complete extinguishment of the fire. Thestarting of the pump shall be automatic but the stopping of the pump after anextinguishment shall be manual.

0.1.7 All piping shall be examined to determine its conditions at least once a year.

0.1.8 All installation valves and associated equipment shall be serviced and tested annually.

0.1.9 Discharge test of sprinklers shall be carried out at least once in six months.

0.1.10 Manual testing of the system shall be carried out once in six months.

0.1.11 When normally opened valves are closed following system operation or test, suitableprocedure shall be instituted to ensure that they are re-opened.

(71)

0.1.12 The entire system shall flushed at least once in a year.

0.1.13 The sprinkler bulbs shall be kept free from paint or dust.

D.2 MAINTENANCE GUIDELINES

Following guidelines shall be followed for sprinkler maintenance.

0.2.1 Maintenance and testing shall be carried out in a planned and systematic manner andrecords kept.

0.2.2 Only trained personnel shall be engaged in the work. Contract with qualified agencyfor service, test and operation is recommended.

0.2.3 Other fire fighting installations are operated manually i.e. to operate a first aid hose reelor internal/external hydrant a person is required. As such during fire, when the systemis in operation, somebody in the building is aware of it. In case of sprinkler operation,no one will come to know. For looking after sprinkler installation following personnelshall be available at all hours.

(a) A trained pump operator shall be available in the pump room.

(b) Depending upon the size of installations at least two or more trained personnelshall be available in fire control room.

(72)

APPENDIX-ELIST OF RELEVANT INDIAN STANDARDS

S.No. I.S.No. Title

1. IS-8757 Glossary of terms associated with Fire safety2. IS-884. Specification for first-aid hose reel for fire fighting3. IS-901. Specification for couplings, double male and double female

instantaneous pattern for fire fighting.4. IS-902. Specification for suction hose couplings for fire fighting

purposes5. IS-903. Specification for fire hose delivery couplings, branch pipe,

nozzles and nozzle spanner.6. IS-904. Specification for two-way and three- way suction collecting

heads for fire fighting purposes.7. IS-907. Specification for suction strainers, cylindrical type for fire

fighting purpose.8. IS-908. Specification for fire hydrant, stand post type.9. IS-909. Specification for under ground fire hydrant.10. IS-636. Non percolating flexible fire fighting delivery hose.11. IS-7637. Glossary of terms for fire fighting equipment.12. IS-937 Specification for washers for water fittings for fire fighting

purposes.13. IS-1641. Code of practice for fire safety of buildings (general): General

principles for fire grading and classification.14. IS-1642. Code of practice for fire safety of buildings (general) : Details

of construction.15. IS-1643. Code of practice for fire safety of buildings (general) :

. Exposure hazard.16. IS-1644. Code of practice for fire safety of buildings(general}:Exit

requirements and personal hazard.17. IS-1646. Code of practice for fire safety of buildings (general) : Electrical

installations.18. IS-2871. Specification for branch pipe, universal for fire fighting

purposes.19. IS-2930. Functional requirements for hose laying tender for fire brigade

use.20. IS-5290. Specification for landing valves.21. IS-8090. Specification for couplings, branch pipe, nozzle, used in hose

reel tubing for fire fighting.22. IS-8442. Specification for stand post type water monitor for fire fighting23. IS-9972. Specification for automatic sprinkler heads.

(73)

---------S.No. 1.5. No. Title

24. IS-11101. Specification for extended branch pipe for fire brigade use25. IS-12349. Fire protection-Safety sign.26. IS-12407. Graphic symbols for fire protection plan.27. IS-9668. Code of practice for provision and maintenance of water

supplies and fire fighting28. IS-3844. Code of practice for installation and maintenance of internal

fire hydrants and hose reel on premises.29. IS-12585. Specification for thermoplastic house (Textile Reinforced)

for Water Genset purpose.30. IS-10221. Code of practice for coating and wrapping of under ground

mild steel pipe lines.31. IS-15105. Design and installation of fixed automatic sprinkler fire

extinguisher system-Code of Practice.32. IS-325 Three phase induction motors.33. IS-1822 Motor starter for voltage not exceeding 1000 volts.34. IS-3624 Burden tube pressure and vaccum gauges.35. IS-1520 Horizontal centrifugal pumps for clear, cold, fresh water.36. IS-1239 Mild steel tubes, tubulars and other wrought steel fittings.37. IS-3589 Electrically welded steel pipes for water, gas and sewage.38. IS-6392 Steel pipe flanges.39. IS-778 Gun metal gate, globe and check valves for general purpose.40. IS-2592 Recommendation for methods of measurement or fluid

flow be means of orific plates and nozzles.41. IS-732 Code practice for electrical wiring and fittings of building.42. IS-gOO Code of practice for installation and maintenance of induction

motor.43. -IS-1248 Direct acting electrical indicating instruments.44. IS-2516 A.C.circuit breakers for voltages not exceeding 1000 volts.45. IS-4047 Heavy duty air break switches and composite units of air break

switches and fuses for voltage not exceeding 1000 volts.46. IS-2208 HRC cartidge fuse links upto 650 volts.47. IS-1554 PVC insulated (heavy duty) electric cables for working

(Part I) voltage upto and including' 1100 volts.48. IS:1536 Centrifugally Cast Iron Pipe49. IS:1537 Vertically Cast Iron Pipe50. IS:1538 Cast Iron Pipe Fitting51 IS:780 Sluice valve for water works purposes (50 to 300 mm.size)52 IS:13095 Butterfly valves.

(74)

\

APPENDIX-FIS : 6392 ·1971

TABLE 17 PLATE FLANGES FORWELDING(Clauses 4. 1 and 5.1)

Nominal Pressure 1.6N/mm2

All dimensions in millimetres

.-.----- dl~*------- ••."1\

•I,"

•

~----- d4~*--------~~-------------~*-.--------~D~* ------------------~

* These dimensions are not to scale.

Nom. Pipe Flange Raised Face Bolting DrillingSize 0, d,

d, D b d4 f No. d2 k

10 17.2 90 14 40 2 M12 4 14 6015 21.3 95 14 45 2 M12 4 14 6520 26.9 105 16 58 2 M12 4 14 7525 33.7 115 16 68 2 M12 4 14 8532 42.4 140 16 78 2 M16 4 18 100

40 48.3 150 16 88 3 M1.6 4 18 11050 60.3 165 18 102 3 M16 4 18 12565 76.1 185 18 122 3 M16 4 18 14580 88.9 200 20 138 3 M16 8 18 160

100 114.3 220 20 158 3 M16 8 18 180125 139.7 250 22 188 3 M16 8 18 210150 168.3 285 22 212 3 M20 8 22 240175 193.7 315 24 242 3 M20 8 22 270200 219.1 340 24 268 3 M20 12 22 295250 273 405 26 320 3 M24 12 26 355

300 323.9 460 28 378 4 M24 12 26 410350 355.6 520 32 438 4 M24 16 26 470400 406.4 580 36 490 4 M27 16 30 525500 508 715 44 610 4 M30 20 33 650600 609.6 840 52 725 5 M33 20 36 770

700 711.2 910 58 795 5 M33 24 36 840800 812.8 1025 64 900 5 M36 24 39 950900 914.4 1125 72 1000 5 M36 28 39 10501000 1016 1255 78 1115 5 M39 28 42 11701200 1220 1485 94 1330 5 M45 32 48 1390

(75)

f2l200MM

f2lBOMM

f2lBOMM

DH

f2l150 MM

TO EXTERNALHYDRANT

TO WET RISERSYSTEM ANDSPRINKLER SYSTEM

LEGENDHPJPDP

SPSH

DH

ST

HYDRANT PUMP / MAIN ELECTRIC PUMPJOCKEY PUMP/PRESSURISATION PUMP

DIESEL PUMP

SPRINKLER PUMP

SUCTION HEADERDISCHARGE HEADER

STRAINER

~ PUMP

-N- BUTIERYFLY / SLUICE VALVE

~ NON-RETURN VALVE

-.9 PRESSURE GAUGE

TV TEST VALVE

TYPICAL LAYOUT OF FIRE PUMP HOUSE WITH ONEELECTRICAL AND ONE DIESEL PUMP

Fig. 1

(76)

SH " 200MM

"80MM

TN

"80MM

DH

"150 MM

TO WET RISERSYSTEM

TO SPRINKLER SYSTEM

LEGENDHP HYDRANT PUMP / MAIN ELECTRIC PUMP -{f)- PUMPJP JOCKEY PUMP/PRESSURISATION PUMP -N- BUTTERYFLY / SLUICE VALVE

.;/

DP DIESEL PUMP ~ NON-RETURN VALVESP SPRINKLER PUMP -2 PRESSURE GAUGESH SUCTION HEADER TV TEST VALVEDH DISCHARGE HEADER

ST STRAINER

TYPICAL LAYOUT OF FIRE PUMP HOUSE WITH TWOELECTRICAL AND ONE DIESEL PUMP

Fig.2

(77)

LEGEND~ TERRACE PUMP

-N- BUTIERFLY / SLUICE VALVE

~ NON-RETURN VALVE

,A)- LANDING VALVE

(INTERNAL HYDRANT)

---E:g FIRE SERVICE INLET

fSI

1:*3 VALVE

DETAIL OF A

TO DRAIN

FROM PUMPHOUSE

I....---~-TO SPRINKLER DRAIN

FROM PUMP HOUSE

TYPICAL ARRANGEMENT OF INTERNAL RISER SYSTEM WITHONE ELECTRICAL AND ONE DIESEL PUMP

Fig. 3

(78)

LEGEND~ TERRACE PUMP

--{',j- BUTTERFLY I SLUICE VALVE

~ NON-RETURN VALVE

~ LANDING VALVE(INTERNAL HYDRANT)

t'*I VALVE

DETAIL OF A

TO DRAIN"Tl -n:Il :Il0 0s:: s::-0 -0C Cs:: s::-0 -0

I I0 0c c(J) (J)m m"Tl "Tl0 0:Il :Il:E (J)

-0m :Il--i

:Il Z;>;en rm m

:Il :Il

L--_---:;;~_ TO SPRINKLER DRAIN

FROM PUMP HOUSE TO SPRINKLER

FROM PUMP HOUSE TO WET RISER

TYPICAL ARRANGEMENT OF INTERNAL RISER SYSTEM WITHTWO ELECTRICAL AND ONE DIESEL PUMP

Fig.4

(79)

---- .

LEGEND

FSI

o RING MAIN

TYPICAL ARRANGEMENT OFDOWN COMER SYSTEM

Fig. 5

TERRACE PUMPBUTTERFLY I SLUICE VALVENON·RETURN VALVE

LANDING VALVE(INTERNAL HYDRANT)

AIR VESSEL

FIRE SERVICE INLET

(80)

PRIMING TANK(2500 LITRE)

OFD -'-' /

1 <,."

50 mm DlA,r L r

)\... \..,

" It " 'It t- V~ il- l'

V 'v 1VI' I~

3 ~~ ~ ~ ~

I

~~J.P ~~H.P ~~ D.P

I ,E

K~~pp

FV FV FV

PUMPHOUS

UGTAN

LEGEND

~ PUMP

-v-r BUTTERFLY ISLUICE VALVE

-:t.1- NON RETURN VALVE

~ FOOT VALVE

pp PRIMING PUMP (SUBMERSIBLE)

OFD OVERFLOW AND DRAIN ARRANGEMENT

DP DIESEL PUMP

HP HYDRANT PUMP

JP JOCKEY PUMP

1V TEST VALVE

TYPICAL LAYOUT OF FIRE PUMP HOUSEWITH PRIMING ARRANGEMENT

Fig.6

(81)

OVERFLOWAND VENT

DOMESTIC WATERSUPPLY TANK(OTHER THAN

DRINKING WATER)

MANHOLE

BAfFLEWALL

FIREFIGHTINGTANK·

STOP VALVE

1

SEPARATION WALL ---ii--------fij

TO DOMESTIC-PUMP SUCTION

•.......•J"'->--=-- TO FIREPUMP SUCTION

TYPICAL ARRANGEMENT FOR PROVIDING COMBINED FIREFIGHTING AND DOMESTIC WATER STORAGE TANK

Fig. 7

(82)

lIf)C\J

T

GLASS VISIONPANEL

LOCKINGARRANGEMENT

STEEL SHUTTER

(RED PAINTED)

It<-~---~12001------3I~

WET RISER SHAFT DOOR DETAILS

200 mm x 200 mmCUT IN SLAB FORWET RISER PIPE 200mmX20omm

CUTIN SLABTO BePROVIDE IN CASEOF SPRINKLERINSTALLATION

WET RISER SHAFTFig. 8

(83)

CLEVIS HANGERSHeavy dutyclevis hangers withpendulum movementto adjust varying heights

SPRINKLER HANGERSPIPE SUPPORT SPLIT CLAMPsplit pipe supportclamps for vertical,horizontal &roof hanginginstallation

FULL THREADED RODSin sizesBmm10mm12mm

TYPICAL PIPE SUPPORTFig.9

(84)

""<:>G.L 11'1 WIDTH OF STAIRCASE 750RISER 150TREAD 250

40

....•....•o~:guoa:: LEGENDS

JP : JOCKY PUMP

HP : HYDRANT PUMP

DP : DIESEL PUMP

SP : SPRINKLER PUMP

SUMPOOOXOOOxn>.:>

~,~--~--------------------~SECTION THRU AA' SJP : SPRINKLER JOCKY PUMP

U.G.TANK

0Ifl

BOOP SP00

'"CD

rs

o rC>

~----~----~----~~ooo--------------------*--------~ooo~------~~<J (FOR IM:T RISER PUMP) (FOR SPRINKLER PUMP)

A'

PLAN

LAYOUT OF FIRE PUMP HOUSE WITH SPRINKLER PUMPFig. 10

(85)

TYPICAL LAYOUT OF SPRINKLER INSTALLATIONFig. 11

(86)

~----------<:)-------,II~---------~<:)-------~I

~----------<:)-------JII

0-----------0-------+-------0II~----------o-------~

• I1~----------O-------~II~----------O-------J

(a) Two end side with central feed

O-·------O-----T-----O-------{)II

0---·----0-----+-----0--------01II0-------0-----+-----0-------_0II

O-------O-----t-----O--------O1I

0-------0-----+-----0-------_0II

0-- -----0-----+-- ---0-------_0II

0-------0-----+-----0--------0IIII1I

6

(a) Two end centre with end feed

~--~------{)--------oI

~--O------{)------- _0II

~--O------{)-------_oII~--O------{)-------_o1I

r--O------{)--------OI

~---o------~------_oII

~---o------{)-------_oII1II

6

(b) Three end side with end feed

0-------0------0-- --o------{)-------{)

0-------0------0-- --O------O-------{)0-------0------0-- ---0------0--------0

0--------------------------0------.0------0-- --0------0----·---00-------0------0-- --O------O-------D0-------0------0-- --O------O------{)

(b) Three end centre with central feed end feed

TYPICAL LAYOUT OF CONNECTION OF SPRINKLERSFig. 12

(87)

48 Sprinklerpoint

48 Sprinklerpoint

pipe spur

Installation control valve set

TYPICAL PIPE SIZING FOR SPRINKLER INSTALLATIONFig. 13

(88)

soe r r 2750 i 3700 f 3700 ~---275

I I

v CJ v T88::;~SIDEWALL ~ .~SPRINKLER :11~

eoo c:0-o:~

0 0 0 0 1~900 * (1700 * 3700 * 11700 ~ la~

Room Length 14700

(a) Rooms over 3700 but not more than 7400 wide LWall or ~ar1ition

v v v vg,...MV-;~-

National boundry between sIdewiIR and eei6ngsprinkler cowrg8

~~

a 0 0 @ 0 If..v 750 r • 3700 r (1700 1 !!7'19OO ~!T g!0:]

<>s...v

-¥-~Mv

~aOO~~HE---37DD--~ir--.....,a7OD---:**·--"""(1700---*-*' :-1IBO~

Room Length 14700

(b) Rooms more than 7400 but not more than 11400 wide.(All dimensions are shown in millimetres)

SIDEWALL SPRINKLER SPACINGFig. 14

(89)

SPRINKLER

PENDENT HEADUPRIGHT HEAD

CONVENTIONALTYPE

UPRIGHT HEAD PENDENT HEAD

,.---:..-=-~=---..... '"" ------ - -----_<" ~.:m:.~-.., ;",,)of" »>--~--_ "" ","""//J~J' ,",,' ...•.'..... l' /'\ ,,< ">",.- .-"';/~ ,;,......• -;'<" "'•••.," I, I , \,'''' ...•.,,/ 7,

I' , '" I , ..•'< " .•..I I , \ \... ',I).II \,. \ ,,"'. , I I \ \ I ••• I' I " I I', \' \ .•• I "I \ /\ II' I" 'I( \I •••I I ~ \ , \I '\ II \ I \ f\ I , , I 1\ 1\ '" /II I \ \ \ 1\ I \ ,I II, I I / I I 1/ \ I , I 'I It, I \ \ I \ I ,II r I I -I I , 1\ \ I \ I ~ , I\ I I \ \ I \ I \II " I I I, V \I ,\ I I \ I I I II \ \ \I J II I II \ " ~ ,I, II, 1'1\ 1\ 1\I

SPRAYTYPE

UPRIGHT HEI\D PENDENT HEAD,--- .....••...

-< ,'---"I r -- ••••...

I '" "''''I'''(-~II ' (I (T 1,

I I'" I,I I I I , I I II I I I , I I I,, I I I I I I I II I I I I I I 'II , I , I , I I,, I I I I I I "

SIDEWALLTYPE

TYPE OF SPRINKLERFig. 15

(90)

SPECIMEN

DRAFT

N. I. T.NOTE: THE SPECIMEN DRAFT NIT CONTAINS ONLY SUGGESTIVE

CONDITIONS AND SUGGESTIVE SCHEDULE OF WORK. THE

NIT APPROVING AUTHORITY MAY MODIFY THE SPECIMEN NIT

TO SUIT THE REQUIREMENT AND SITE CONDITIONS.

(91)

(n PRESS NOTIFICATIONCENTRAL PUBLIC WORKS DEPARTMENT

Executive Engineer (EI.) onbehalf of the President of India invites sealed item rate tender for under mentionedwork from the Contractors who are enlisted in appropriate class for fire fighting worksor in CPWD approved list in appropriate category for Fire Fighting Work.

2. The work involves supplying & installation of Fire Fighting System (with Sprinklerssystem).

3. Particulars of work: "C/o .

(SH: supply, Installation, testing and commissioning of Fire Fighting System.)

Estimated Cost:- Rs.Earnest Money:- Rs.Cost of Tender:- Rs.

4. The application along with enclosures shall be submitted in a sealed envelop whichshall be superscribed "Application for the work" " C/o .(SH: Fire Fighting System due on .

5 The firms who wish to tender for the work, may submit their application by 3.00 P.M.on .

6 The date of sale and opening of tender papers will be intimated to the firms in duecourse.

7. The firms will have to furnish earnest money at the time of issuing tender paper.

8. This tender notice can be seen at web site .

(92)

(ii) ADDITIONAL CONDITIONS

1 SPECIFICATION

The work shall be executed as per CPWD's general specification for Electrical WorksPart-I (Internal)-2005, Part-II(External)-1994, Part-IV(Sub-Station)-1982, Part-V (WetRiser and Sprinkler System for Fire Fighting Installations)-2006, Part-VI (Fire AlarmSystem) IE Rules, Indian Standards amended upto date and as per direction ofEngineer-in-Charge. The additional specifications are to be read with above and incase of any variations, specifications given along with the tender shall apply.

2 LOCATION

The work is to be executed at * The contractor is advised to visitthe site before submission of their tender and ensure that equipment being offered bythem shall be accommodated in the spaces available. The Fire Fighting Pumps (exceptTerrace Pump) are to be installed in the under ground pump house.

3 SUBMISSION OF TENDER-: (Single Bid System)-:

Tender is in Single Bid System. After issue of tender to the firms whose applicationsare approved by the competent authority, a pre-bid conference will be held in the officeof (NIT approving authority) on pre-decided date &time. All tenderers will be required to attend the same. The tenderers will have tosubmit their observations as well as the Technical Particulars of the equipment in theprescribed proforma attached with the tender at least two days before this meetingdirectly to the office of (NIT approving authority) . Thedepartment may issue amendment! clarifications/additional techno-commercialconditions after the meeting which will form a part of NIT. The Technical Particulars i.e.Make, Model No. etc. of various equipment which will finally be accepted will be issuedto all the tenderers and tenderers will be required to submit their tender based on theaccepted technical particulars. Date of receipt & opening of tender will be decided. Thetenderers will have to confirm that there shall be no condition in the tender. Tendersreceived with any condition including conditional rebate will be rejected. A tenderer willalso not be allowed to withdraw or modify any condition after the decision to open thetender has been taken by the department.

OR

SUBMISSION OF TENDER-: (Two Bid System)-:3.1 The tender is in two parts:

(a) Part I - Technical cum Commercial Bid(b) Part II - Price Bid

3.2 Tender documents will be issued to only those firms whose applications are approvedby the competent authority.

3.3 The tender shall be submitted duly completed in two separate sealed envelopes, onefor Part-I technical and commercial bid, and the other for Part-II price bid. Both these

(93)

bids shall be submitted together on or before the due date and time. The name of thework "Technical-cum-Commercial Bid only" / "Price Bid only" shall clearly besuperscribed on the top of the respective sealed envelopes.

3.4 First Envelop - The name of work and the words "Part-I- Technical-cum- CommercialBid" should be written on the top of the sealed cover. It shall be submitted completewith the following documents:-

(i) Complete tender documents (part-I) in original, as purchased from CPWDincluding the schedule of work (without indicating the price) duly signed foracceptance of all terms and conditions.

(ii) Deviation, if any from NIT specifications should be clearly brought out.

(iii) Complete technical particulars of all equipments & materials as per proforma.

(iv) Technical literature and catalogues of all equipments, performance curves ofpumps etc.

(v) Confirmation that existing space available is adequate for installation of equipmentsbeing offered by the tenderer.

3.5 Second Envelop - The name of work and the word Part-II- "Price Bid" should bewritten on the top of the sealed cover. The envelope should contain price bid offer only.The tenderers should fill up their rates in the price bid (part-II of tender) in the format,issued by the department. The rates/amount in this schedule should be filled up infigures as well as in words. Tenders in which the price bids are given in any otherformat, are liable to be rejected. The abstract of cost will also be required to be filledin. In the price bid, there shall be no condition whatsoever. Firms should clearly notethat price bids with any condition including that of conditional rebates shall be"rejectedforthwith.

3.6 The tenderers are advised not to deviate from the technical specifications/ items,commercial terms and conditions of NIT like terms of payment, guarantee, arbitrationclause, escalation.

3.7 The technical cum commercial bid only, shall be opened first on the due date and time,as specified in form CPWD-6, in the presence of tenderers or their authorizedrepresentatives who wish to remain present.

3.8 Scrutiny/evaluation of the Technical-cum-commercial bid shall be done by thedepartment in consultation with any agency as deemed necessary. In case it is foundthat the technical-cum-commercial bid of a tenderer is not in line with NIT specifications,requirements and/or contains many deviations, the department reserves the right toreject the technical bid of such firm(s) without making any reference to the tenderer(s).

3.9 Necessary clarifications required by the department shallhave to be furnished by thetenderer within the time given by the department for the same. The tenderer will haveto depute his representative to discuss with the officer(s) of the department as and

(94)

when so desired. In case, in the opinion of the department a tenderer is taking unduelong time in furnishing the desired clarifications, his bid will be rejected without makingany reference.

3.10 After obtaining clarifications from all the tenderers, the department may modify theTechnical & Commercial Conditions/Specifications, if required, and will intimate thetenderers whose Technical-cum-Commercial bids are acceptable. The date and timeof opening Price-Bid will be intimated in advance. In case tenderer want to modify theprice bid he can submit the same before opening of the price bid as intimated byExecutive Engineer (EI.). This however, may be allowed only if there is any changein specifications/items by the department during the technical scrutiny of the tender.

3.11 A tenderer will not be allowed to withdraw or modify any condition at a time after the. technical bids have been accepted and the decision to open the price bid has beentaken by the department.

3.12 The Part-II of the tender i.e. Price bid, (second envelope) along with revised price bidif any (if desired & allowed by the Department) will be opened by the ExecutiveEngineer (E) in the presence of the representatives of the tenderers who wish to bepresent on the due date and time of opening of price bid.

(NIT approving authority to delete one of the above options)

4 ACCEPTANCE OF TENDER

The department reserve the right to reject any or all the tenders without assigning anyreason. The department may call for fresh tenders with or without modification in thetender from the same firms whose applications are already approved by the competentauthority.

5 RATES

The rates shall be inclusive of all taxes, levies, packing, transportation, handling etc.Nothingextra shall be paid. Octroi exemption certificateshall be issued by the departmentif requested by the contractor. However department will not be responsible in caseoctroi exemption is not granted to the contractor.

6 STORAGE

The Pump House may be used for storage of material. Watch & ward of equipmenttill handing over to the department will be contractor's responsibility.

7 WATER & POWER·

Water and power will be made available to the contractor for execution of the work freeof cost.

OR

(95)

The department will not supply water and power for execution of the work. Howeverthe same shall be made available for testing and commissioning.

(NIT approving authority to delete one of the above options)

8 ACCEPTABLE MAKE

The acceptable make of various equipment are indicated in the list attached. Alternativeor equivalent make will not be accepted.

9 TIME OF COMPLETION

The entire work shall be completed within ------------* monthsafter days of the date of issue of letter of award.

10 MATERIALAPPROVAL

The material brought at site shall be approved by the Engineer-in-Charge before usein the work. In case during execution any material being used in the work is found notas per agreement specifications, Engineer-in-Charge may issue instruction to thecontractor to remove the material from site and the contractor will be bound to do so.

(96)..

(iii) INTRODUCTION AND SCHEME

1 INTRODUCTION

The building under construction at is * storeyed buildingconsisting of "* Ground Floor + "* Upper Floors and Terrace. Floor to floorheight is "* Mtrs. & height upto Terrace from Basement is "* Mtrs.(Approx.). The Pump House and Under Ground Tank have been provided in Basement.Terrace Tank has been provided near "* Room at the Terrace of the_______ "* Building. There are "* NosVertical Risers for providingInternal Hydrant.

1.1 The work is to be executed at "* All equipment will be requiredto operate under climatic conditions of "*

1.2 The tenderers are advised to visit the site for familiarisation of site conditions andcollection of any information considered vital for submission of tender. The departmentwill not take any responsibility for the same.

2. SCOPE OF WORKFollowing works are to be executed under this tender:-

(i) Complete Wet Riser System cum Down Comer System and Sprinkler in theBasement.

3 SCHEME

3.1 FireFighting System:- It is proposed to provide Main Electric & Diesel Fire Pump andPressurisation Pump in Pump House. Terrace Pump will be installed in______ "* at the Terrace. Ring Main with "* mm. dia M.S.Pipe will beprovided around the Building and "* Nos. Yard Hydrants will be provided atsuitable locations. There are "* Nos. "* Wet Riser Vertical Shaft inthe Building. Internal Hydrants with First Aid Hose Reels will be provided at each floorfrom Basement to Terrace Floors. Air Vessels shall be provided at the Terrace. TheTerrace Tank will feed the Risers at the Terrace. '

Sprinklers will be provided in Basement and connected to the same Fire Pump.

In Sub-Station, DG sets are being provided. It will not be possible to connect the MainElectric Fire Pump with DG Set. In "* power failures are quite often and forlong period. In order to maintain pressure in the system it is proposed to connectPressurisation Pump with DG Set supply and Main Electric Fire Pump with normalsupply. The Terrace Tank Fire Pump will also be connected with DG Set supply. TheElectric Panels have been proposed separate for Main Electric Fire Pump (NormalSupply), Pressurisation Pump (Essential Supply), Diesel Fire Pump Control Panel(Essential Supply) and Terrace Pump (Essential Supply).

A Fire Control Room is being provided at Ground Floor. In order to monitor the statusof entire system an indication Panel for Fire Fighting Pumps, Water Supply Pumps,UG and Terrace Tank etc. is proposed to be installed in the Fire Control Room.

(97)

(Iv) SCHEDULE OF WORK

Name of Work: : C/o

(SH:-Supplying, Installation, Testing & Commissioning of Fire Fighting System)

<r

S. Description of Item Qty. Rate Unit AmountNo.

r 1 Supplying, Installation, Testing andCommissioning of electric driven main firepump suitable for automatic operation andconsistingof following: complete in all respectas required.

(a) Horizontal type, multistage, centrifugal,split casing pump of cast iron body &bronze impeller with stainless steel shaft,mechanical seal to ensure a minimumpressure of 3.5 kg/sq.cm. at highest andfarthest outlet at specified flow of .............Ipm at "." ..."" m. head conforming to IS1520.

(b) Suitable HP sa cage induction motor,TEFC, synchronous. speed 1500 RPM,suitable for operation on 415 volts, 3phase 50 Hz. AC with IP 55 protectionfor enclosure, horizontalfoot mountedtypewith Class-'F' insulation, conforming toIS-325.

(c) M.S.fabricated Common base plate,coupling, coupling guard, foundation boltsetc. as required.

(d) Suitable cement concretefoundation duly plastered with antivibration pads. Set Set

~ Supplying, Installation, Testing and<, Commissioning of diesel engine driven main

fire pump suitable for automatic operation andconsistingof following: complete in all respectas required.

(a) Horizontal type, multistage, centrifugalpump of cast iron body and bronzeimpeller with stainless steel shaft,

(98)

S. Description of Item Qty. Rate Unit AmountNo.

mechanical seal to ensure a minimumpressure of 3.5 kg/sq.cm. at highest andfarthest outlet at specified flow of................. Ipm at .... ........ m. headconforming to IS 1520.

(b) Suitable HP, 1500 RPM water cooled withradiator, diesel engine conforming torelevant BS & IS standard complete withauto starting mechanism, 12 volts/24Volts electric starting equipment, DieselTank, exhaust pipe extended upto 1 m.outside pump house duly insulated with50 mm. thick glass wool with 1.0 mm.thick aluminium sheet cladding, residentialsilencer, instruments and protection asper specification, stop solenoid for autostop in the event of fault with audioindications, painted with post office redcolour etc. as required.

(c) M.S.fabricated Common base plate,coupling, coupling guard, foundation boltsetc. as required.

(d) Suitable cement concrete foundation dulyplastered with anti vibration pads. Set Set

/>3 Supplying, Installation, Testing andCommissioning of electric driven pressurisationpump suitable for automatic operation andconsisting of following: complete in all respectas required.

(a) Horizontal type, multistage, centrifugalpump of cast iron body and bronzeimpeller with stainless steel shaft,mechanical seal and flow of ........... Ipmat ........ m. head conforming to',S : 1520.

(b) Suitable HP sa cage induction motorTEFC type suitable for operation on 415volts, 3 phase 50 Hz. AC with 'P 55class of protection for enclosure,horizontal foot mounted type with Class-'F' insulation, conforming to IS : 325.

(99)

S.No.

Description of Item Qty. Rate Unit Amount

;4\/

(d) Suitable cement concreteIoundation duly plastered with antivibration pads. Set

(d) Suitable cement concrete foundation dulyplastered with anti vibration pads. Set

(c) M.S.fabricated Common base plate,coupling, coupling guard, foundation boltsetc. as required.

Supplying, Installation, Testing andCommissioning of electric driven terracepump suitable for automatic operation andconsistingof following: complete in all respectas required.

(a) Horizontal type, multistage, centrifugal,split casing pump of cast iron body &bronze impeller with stainless steel shaft,mechanical seal and flow of Ipmat m. head confirming to IS :1520

(b) Suitable HP SQ cage induction motorTEFC type suitable for operation on 415volts, 3 phase 50 Hz. AC with IP55 classof protection for enclosure, horiziontal footmounted type with Class-'F' insulation,conforming to IS-325.

(c) M.S.fabricated Common base plate,coupling, coupling guard, foundation boltsetc.as required.

Supplying, Installation, Testing andCommissioning monoblock type self primingdrainage pump of Ipm discharge ofwater at m. head complete with baseplate and all accessories suitable for operationon 230 V, single p~ase/415 V 3 phase, 50 Hz.AC supply complete with starter for automaticoperation including water level sensing device,inter connection with submerssible cable etc.as reqd.

Set

Set

(100)

S.No.

Description of Item Qty. Rate Unit Amount

6 Fabrication, Supplying, Installation, Testing & SetCommissioning of electrical control panel ofcubical construction, floor mounted type,fabricated out of 2mm. thick CRCA sheet,compartmentalised with hinged lockable doors,dust and vermin proof, powder coated ofapproved shade after 7 tank treatment process,cable alley, inter-connection, havingswitchgears and accessories mounting andinternal wiring, earth terminals, numbering etc.complete in all respect, suitable for operationon 415 V, 3 phase, 50 HZ. AC supply withenclosure protection class IP 42 as required.

A COMMON PANEL IN FIRE PUMPHOUSE

(i) INCOMER

(a) Amps. TP& N SFU withHRC fuses

(b) Voltmeter (0-500 Volts) with selectorswitch.

(c) Ameter (O- Amps.) with selectorswitch & CT's etc.

(d) Set of 3 Phase indicating lamp.

(e) Set of Al.bus bar Amps.

(ii) OUTGOING.

(a) Main fire pump... .. .. .. .. .... .. ..Amps. TP& N SFU withHRC fuses with suitable HP fullyautomatic star!delta starter with overload protection, current sensing typesingle phase preventor complete withall accessories and internal wiringrequired for automatic operation,selector switch for local/remote, auto!manual/OFF operation.

Set

(101)

S. Description of Item Oty. Rate Unit AmountNo.

(b) Jockey pump...... ........... ..Amps. TP& N SFU withHRC fuses with suitable HP fullyautomatic star/delta starter with overload protection, current sensing typesingle phase preventor complete withall accessories and internal wiringrequired for automatic operation,selector switch for local/remote, auto/manual/OFF operation.

(c) Diesel Engine Control.Control for Diesel Engine comprising:-

(i) Auto/Manual selector switch & 3attempt starting device, timers andrelays as required, push buttons,start/stop in manual mode.

(ii) Indication lamp for High/LowLub.otl pressure, High WaterTemp.and Engine ON indication.

(iii) Battery charger suitable for 12 V/24 V DC with boost and tickleselector switch, 0-30 V DC voltmeter, 0-20A DC Ammeter.

(iv) All standard relays andaccessories for automaticoperation of diesel engine.

S PRESSURISATION PUMP ANDTERRACE PUMP CONTROL

(a) ........... Amps.TP&N SFU with HRCfuses

(b) Voltmeter (0-500 Volt) with selectorswitch.

(c) Ammeter (0- ......... Amps.) withselector switch & CTs.

(d) Set of 3 phase indication lamp

(102)

S. Description of Item Qty. Rate Unit AmountNo.

(e) Suitable HP fully automatic Star/DeltaStarter with over load protection,current sensing type single phasepreventor complete with allaccessories and internal wiringrequired for automatic operation.

(f) Selector switch for local/remote, auto/manual/off operation ON/OFFindication lamp etc. Set Set

C. DIESEL ENGINE CONTROL.

Control for Diesel Engine comprising:-

(a) Auto/Manual selector switch & 3 attemptstarting device, timers and relays asrequired, push buttons, start/stop inmanual mode.

(b) Indication lamp for High/Low Lub.ollpressure, High Water Temp. and EngineON indication.

(c) Battery charger suitable for 12 V / 24 VDC with boost and tickle selector switch,0-15 V /0-30 V DC volt meter, 0-20A DCAmmeter.

(d) All standard relays and accessories for .automatic operation of diesel engine; Set Set

D. MAIN FIRE PUMP CONTROL

(a) ............. Amps.TP&N SFU with HRCfuses

(b) Voltmeter (0-500 Volts) with selectorswitch.

(c) Ammeter (O- ... Amps.) with selectorswitch, CTs etc.

(d) Set of 3 phase indication lamp.

(e) Suitable HP fully automatic StarlDeltaStarter with over load protection, current

(103)

s. Description of Item Qty. Rate Unit AmountNo.

sensing type single phase preventorcomplete with all accessories and internalwiring required for automatic operation.

(f) Selector switch for local/remote, auto/manual/off .operation. Set Set

E. SYSTEM CONTROLLER

Designing, Supply, Installation, Testing andCommissioning of system controller tocontrol operation of Main Electric FirePump, Diesel Pump, PressurisationPump, Terrace Pump in sequence as perspecification consisting of relays, timers,sensors, annunciation window for faultindication, complete as per specification.

7 INDICATION PANEL IN FIRE CONTROLROOMFabrication, Supply, Installation, Testing &Commissioning of wall mounted remoteindication panel for fire fighting systemfabricated from not less than 1.6 mm. thickCRCA sheet, powder coated of approvedshade, complete internal wiring, indicatinglamps, relays, accessories, numbering,lettering complete in all respect and consistingof the following as required.

(a) ON/OFF indication of Main Electrical FirePump, Pressurisation Pump, TerracePump.

(b) AudioNisual indication of operation of MainElectric/Diesel Fire Pump and TerracePump with reset push button.

(c) Pressure indication in Fire FightingSystem (pressure transducer to beinstalled under separate item). Job Job

8 Supplying, installation, testing andcommissioning of annunciation panel madeout of not less 1.6 mm thick CRCA sheet

(104)

S. Description of Item Qty. Rate Unit AmountNo.

powder coated in approved colour with lockingarrangement, audio and visual indicationof faultand operation of automatic sprinkler, systemmonitoring including providing and fixing thefollowing, connections interconnections etc.complete as required. The Panel shall be Microprocessor type/solid state type.*

(a) Monitoring ........ Nos. of flow switches.

(b) Monitoring the open circuit, short circuit& earth fault in control cable betweenpanel and flow switches.

(c) Battery charger trickle cum boost to takecomplete load of annunciation panelcomplete with indication of low batteryvoltage, mains failure and otheraccessories including providing and fixingof 2 Nos. 12 volts 24 AH each sealedmaintenance free batteries.

(d) Audible alarm

(*) Delete not applicable.

9 Supplying and Laying of XLPE insulated, PVCsheathed alluminium conductor 1.1 KV gradearmoured U.G.Cable of following sizes onsurface/ in existing cable tray suitably clampedas required.

(a) 3 x 120 sq.mm. m. m.

(b) 3 x 25 sq.mm. m. m.

(c) 2 x 6 sq.mm. m. m.

10 Supplying and laying of XLPE/PVC insulatedstranded copper conductor 1.1 KV grade (un-armoured) of following size on existing cabletray suitably clamped with termination withcopper lugs at both ends as required.

(a) Single core/3 core 95 sq.mm. m. m.

(b) Single core/3 core 70 sq.mm. m. m.

(105)

S. Description of Item Qty. Rate Unit AmountNo.

(c) Single core/3 core 16 sq.mm. m. m.

(d) Single core/3 core 10 sq.mm. m. m.

(e) Single core/3 core 6 sq.mm. m. m.

11/ Supplying and laying control wiring with'\ V multicore copper stranded conductor of\

following sizes PVC insulated, PVC sheathedarmoured under ground cable between varioussensors and system controller/starter etc.inpump house & out side on surface/existingcable tray complete with connections at bothend with glands etc. as required.

(a) 8 x 2.5 sq.mm. m. m.

(b) 6 x 2.5 sq.mm. m. m.

(c) 4 x 2.5 sq.mm. m. m.

(d) 2 x 2.5 sq.mm. m. m.

12 Supplying and making end termination withbrass compression gland & A1.1ugsfor followingsizes of PVC insulated, PVC sheathed/ XLPEAl.conductor cables of 1.1 KV grade asrequired.(a) 3 x 120 sq.mm. Sets. Sets.

(b) 3 x 25 sq.mm. Sets. Sets.

(c) 2 x 6 sq.mrn. Sets. Sets.

13 Supplying, installation and testing of earthingstation with G.I. plate of size 600 mm x600 mm x 6 mm including accessories andproviding masonary enclosure with cover platehaving locking arrangement and watering pipeincluding charcoal/coke and salt complete asper specification. m. m.

-t 14 Providing and fixing 25 mm x 5 mm GI Strip in40 mm dia G.l.pipe from earth electrode asrequired. m. m.

(106)

S. Description of Item Qty. Rate Unit AmountNo.

-: 15 Providing and Fixing 25 mm x 3 mm GI Stripon surface or in recess for earth connectionsas per specifications complete as required.

16 Providing and Fixing 6 mm. dia copper wire onsurface or in recess for loop earthing alongwithexisting surfacelrecessed conduit/submainwiringl cable etc. as per specification asrequired. m. m.

.••.. :-i... 17 Providing and fixing 6 SWG dia G.I. wire onsurface or in recess for loop earthing completeas required.

'-I 18 Fabrication and Installation of following sizesof perforated MS cable tray including horizontaland vertical bends, reducers, tees, cross-members and other accessories as requiredduly suspended from the ceiling with MSSuspenders and including painting with postoffice red synthetic paint as required.

(a) 100 mm,(W)x50 mm.(O)x1.6 mm(T) m. m.

(b) 150 mm.(W)x50 mm.(O)x1.6 mm(T) m. m.

(c) 300 mm.(W)x50 mm.(O)x1.6 mm(T) m. m.,/

J 19 Providing laying, testing & commissioning of'C' class heavy duty MS Pipe conforming to IS1239/3589 ilc fittings like elbows, tees, flanges,tapers, nuts bolts, gaskets etc. in groundincluding excavation & providing cementconcrete blocks as supports, anticorrosivetreatment with coaltar/asphalt tape as per IS10221, refilling the trench etc. of followingsizes complete as required.'

(a) 200 mm. dia (wall thickness 6 mm) m. m.

(b) 150 mm. dia. m. m.

,~/ Providing laying, testing & commissioning ofcast iron pipe double flanged class 'A'conforming to IS 1536 or IS 1537 includingfittings, elbows, nuts, bolts, gasket etc. in

(107)

v

S. Description of Item Qty: Rate Unit AmountNo.

ground including excavation & providing cementconcrete block as supports, refilling the trenchetc.of following sizes complete as required.

(a) 200 mm. dia m. m.

(b) 150 mm. dia m. m.

~1 Providing, laying, testing & commissioning ofv Class 'C' heavy duty MS Pipe conforming to IS

1239/3589 including fittings likeelbows,tees,flanges, tapers, nuts bolts, gasketsetc., on surface and providing cement concreteblocks as supports and painting with two ormore coats of synthetic enamel paint of requiredshade complete as required

(a) 200 mm. dia (wall thickness 6 mm) m. m.

(b) 150 mm. dia m. m.

, 22 Providing, laying, testing & commissioning of/

'C' class heavy duty MS Pipe conforming to IS3589 and 1239 including fittings like elbows,tees, flanges, tapers, nuts bolts, gaskets etc.,fixing the pipe on the wall/ceiling with suitableclamps and painting with two or more coats ofsynthetic enamel paint of required shadecomplete as required.

(a) 200 mm dia (wall thickness 6 mm.) m. m.

(b) 150 mm dia m. m.

(c) 100 mm dia m. m.

(d) 80 mm dia m. m.

(e) 65 mm dia m. m.

(f) 50 mm dia m. m.

(g) 32 mm dia m. m.

(h) 25 mm dia m. m.

(108)

S.No.

Description of Item Oty. Rate Unit Amqunt

23 Providing, laying, testing & commissioning of'\., / 'B' class medium duty G.I. Pipe conforming to

IS 1239 including fittings like elbows, tees,flanges, tapers, nuts bolts, gaskets etc., fixingthe pipe on the wall/ceiling with suitable clampsand painting with two or more coats of syntheticenamel paint of required shade complete asrequired ..

(a) 80 mm

(b) 65 mm

(c) 50 mm

(d) 32 mm

(e) 25 mm

m.

m.

m.

m.

m.

2~ /Supplying and fixing single headed internal~ -: hydrant valve with instantaneous Gun metal

couplings of 63 mm dia with cast iron wheelISI marked conforming to IS 5290 (Type -A)with blank Gunmetal cap and chain as required. Nos.

Supplying and fixing Single headed extemal yardhydrant valve with 1 No. 63 mm diainstantaneous FM Gun metal coupling and castiron wheel, ISI marked, conforming to IS 5290(type A) with blank Gunmetal cap and chain asrequired.

Supplying, fixing, testing and commissioningof butterfly valve PN 1.6, with Bronze/Gunmetalseat duly ISI marked complete with Nuts, Bolts,washers, gaskets, conforming to IS 13095, offollowing sizes as required.

(a) 200 mm dia

(b) 150 mm dia

(c) 100 mm dia

(d) 80 mm dia

(109)

Nos.

Nos.

Nos.

Nos.

Nos.

m.

m.

m.

m.

m.

Each

Each

Each

Each

Each

Each

(a) 50 mm dia

(b) 40 mm dia

(c) 32 mm dia

Oty. Rate Unit AmountS.No.

Description of Item

Nos.

Nos.

Nos.

Nos.

28 Supplying and fixing orifice plate made of6 mm. thick stainless steel with orifice ofrequired size in between flange & landing valveof external and internal hydrant to reducepressure to working pressure of 3.5 kg/cm2complete as per specifications as required. Nos.

Supplying and fixing, testing & commissioningof double flanged sluice valve of rating PN 1.6with non rising spindle, bronze/gun metal seat,ISI marked complete with nuts, bolts, washers,gaskets, conforming to IS 780 of following sizesas required.

(a) 200 mm dia

(b) 150 mm dia

(c) 100 mm dia

(d) 80 mm dia

Providing, installation, testing andcommissioning of dual plate non-return valveof following sizes confirming to IS: 5312complete with rubber gasket, GI bolts, nuts,washers etc.as required.

(a) 150 mm dia

(b) 80 mm dia

Providing, installation, testing andcommissioning of stainless steel strainerfabricated out of 1.6 mm. thick stainlesssteel sheet with 3 mm.dia holes withstainless steel flange.

(a) 200 mm dia

71 Providing, installation, testing andcommissioning of gun metal valves of followingsizes as required.

Nos.

Nos.

Nos.

Nos.

Nos.

Nos.

Each

Each

(110)

Each

Each

Each

Each

Each

Each

Each

Each

Each

S. Description of Item Qty. Rate Unit AmountNo.

qz Supplying and fixing 63 mm dia, 15 mtr. long, /' RRL hose pipe with 63 mm dia Male and Female'J

Gun metal couplings duly binded with GI wire, .rivets etc. conforming to IS 636 (type-A) asrequired. Nos. Each

33 Supplying and fixing First-Aid Hose Reel with MS/' construction spray painted in Post office Red,

"'/ conforming to IS 884 with upto date amendments,complete with the following as required.

(a) 20/30/40 m. long 20 mm (nominal internal)dia water hose Thermoplastic (Textilereinforced) Type -2 as per IS: 12585

(b) 20 mm (nominal internal) dia gun metalglobe valve & nozzle.

(c) Drum and brackets for fixing theequipmets on wall.

(d) Connections from riser with 40 mm diastop valve (gun metal) & M.S. Pipe Nos. Each

34 Supplying and fixing of hose cabinet of size~/ 900 mm x 600 mm x 500 mm made of 2 mm

thick MS sheet with 6 mm thick glazed glassdoors ilc necessary locking arrangementsuitable to accommodate external hydrant withbutterfly valve, 2 Nos. 15 mtr. long Hose pipe,1No. branch pipe, mounted on wall OR raisedbrick platform & duly painted with Post officered externally and white internally with syntheticenamel paint complete in all respect, forexternal hydrant, as required. Nos. Each

35/ Supplying & fixing 63 mm dia Gun metal branch\\, / pipe with 20 mm (nominal internal diameter)

size Gun Metal nozzle conforming to IS 903,suitable for instantaneous connection to inter-connect hose pipe coupling as required. Nos. Each

"/'26 Supplying and fixing 4 way fire brigade~" connection of cast iron body with 4 Nos. Gun

metal male instantaneous inlet couplingscomplete with cap and chain as reqd. for150mm dia MS pipe connection, conformingto IS 904 as required. Nos. Each

(111)

S. Description of Item Qty. Rate Unit AmountNo.

r Supplying and fixing 3 Way FBC of CI body~ with 3 No. Gun Metal male instantaneous inlet

couplings complete with cap and chain asrequired. For 150 mm dia M.S. Pipe connectionconforming to IS : 904 as required. Nos. Each

}J3 Supplying and fixing air vessel made of 250-, mm dia, 8 mm thick MS sheet,1200 mm. inheight with air release valve on top and flangedconnection to riser, drain arrangement with25 mm dia Gun metal wheel valve, withrequired accessories, pressure gauge andpaintingwith synthetic enamel paint of approved .shade as required. Nos. Each

,39 Providing fixing testing & commissioning of 15'-J mm size quartzoid bulb type sprinklers, of

rating 68 degree C. pendent with requiredaccessories. Nos. Each

40 Providing & fixing Pressure Switch in the-''-., ..'

M.S,Pipe Line including connection etc. asrequired. Nos. Each

\ 1,1 Providing & fixing flow switches in 100/150'-..f-/ mm.dia M.S.Pipe. Nos. Each

42 Providing & fixing pressure transducer in---J M.S.pipe line (pressure range 0-10 kg/cm2)

suitable for 12 volts/ 24 volt DC. Includingconnection etc.as required. Nos. Each

.: 43 Providing & fixing testing & commissioning ofinstallation control valve of Cast iron body andbrass/bronzeworking parts comprising of watermotor alarm, bronze seat clapper, and clapperarm, hydraulically driven mechanical gong bellto sound continuous alarm when the Wet riser/Sprinkler system activates, pressure gauges,emergency releases, strainer, pressure switch,cock valve complete with drain valve andbypass, test control box, ball valves, MS pipeof required size, flanges, orifice plate, gasketetc. of size 150 mm dia as required. Nos. Each

(112)

S. Description of Item Qty. Rate Unit AmountNo.

lA4 Providing & fixing angle iron (40 mm x 40 mm./ x 5 mm) door frame and M.S sheet (2

mm.thick) cum glass shutter of size 2.1 mtr. x1.2 mtr. (N.S.) with 25 mm. x 25 mm. x 3 mm.angle frame all around & stiffened in betweenilc hinges, handle, locking arrangement, paintingwith approved synthetic enamel paint ilc signwriting on glass at internal hydrant includingproviding & fixing M.S.Sheet 2 mm.thick onremaining portion above door to close openingilc painting etc.as required. Nos. Each

Note:1. Quantity and sizes to be filled in by NIT approving authority.2. Items not required be deleted.3. Items not provided above but required be added.

(113)

(v) ACCEPTABLE MAKES

S.No. ITEM. ACCEPTABLE MAKE.

1 PUMP

2 MOTOR

3 DIESEL ENGINE

4 M.S.PIPE

5 C.I.PIPE

6 G.I.PIPE

7 C.I.PIPE FITTING.

8 SLUICE VALVE

9 GUN METAL VALVE

10 BUTTERFLY VALVE

11 WATER SOLENOID VALVE

12 CUSHY FOOT MOUNTINGS

13 PRESSURE SWITCH

14 PRESSURE GUAGES

15 WATER LEVEL CONTROLLER

16 BATTERIES

17 FLOW SWITCH

18 INTERNAUEXTERNAL HYDRANT(LANDING VALVE)

19 HOSE REEL 20 mm.DIA

20 INSTALLATION CONTROL VALVE.

21 FIRE BRIGADE INLETI CONNECTION

22 SPRINKLER HEAD

23 RRL HOSE PIPE 63 mm. DIA

24 GM BRANCH PIPE 63 mm. X 20 mm.DIA

25 FIRST AID HOSE REEL DRUM

26 POWER CABLES

27 CONTROL CABLES

28 SINGLE PHASE PREVENTOR

29 SDFU/SFU WITH HRC FUSES

30 STARTERSICONTACTOR

31 ELECTRICAL PANEUSYSTEM CONTROLLER& CONTROL CONSOLE

32 PIPE SUPPORTS

(114)

(vi) SCHEDULE OF TECHNICAL PARTICULARS

MAIN FIRE PRESSURISATION TERRACE DEWATERINGPUMP PUMP PUMP PUMP

1 PUMP

(i) Make

(ii) Model No.

(Hi) Discharge

(iv) Total Head at full Discharge

(v) BHP absorbed at Rated Head

(vi) Speed

(vii) Casing Material

(viii) Impeller Material

(ix) Shaft Material

(x) No.of Stages

(xi) Type of DriveI

(xii) Type of Sealing

Note:- Attach Catalogue/Curve.

2 MOTOR

(i) Make

(ii) Type

(iii) H.P.

(iv) Speed.

(v) Insulation Class.

3 DIESEL ENGINE

(i) . Make

(ii) Model No.

(iii). H.P.

(iv) Speed

(v) No.of Cylinders

(vi) I.S/B.S.Conforming to

(vii) Type of Cooling

(viii) Fuel Consumption at Full Load

(115)

(vi) SCHEDULE OF TECHNICAL PARTICULARS

MAIN FIRE PRESSURISATION TERRACE DEWATERINGPUMP PUMP PUMP PUMP

1 PUMP

(i) Make

(ii) Model No.

(iii) Discharge

(iv) Total Head at full Discharge

(v) BHP absorbed at Rated Head

(vi) Speed

(vii) Casing Material

(viii) Impeller Material

(ix) Shaft Material

(x) No.of Stages

(xi) Type of DriveI

(xii) Type of Sealing

Note:- Attach Catalogue/Curve.

2 MOTOR

(i) Make

Oi} Type

(iii) H.P.

(iv) Speed.

(v) Insulation Class.

3 DIESEL ENGINE

(i) . Make

(ii) Model No.

(iii). H.P.

(iv) Speed

(v) No.of Cylinders

(vi) I.S/B.S.Conforming to

(vii) Type of COOling

(viii) Fuel Consumption at Full Load

(115)