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MINISTRY OF RAILWAYS

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Lo pkf yr lhf< ;ka yx ku s g sr q r du hd h fof'k f"VLo pkf yr lhf< ;ka yx ku s g sr q r du hd h fof'k f"VLo pkf yr lhf< ;ka yx ku s g sr q r du hd h fof'k f"VLo pkf yr lhf< ;ka yx ku s g sr q r du hd h fof'k f"V TECHNICAL SPECIFICATION FOR PASSENGER-ESCALATORS

TO BE INSTALLED AT VARIOUS RAILWAY-STATIONS OF INDIAN RAILWAYS

SN Amendment Revision

Reason Number Date Number Date

1. 1st 16.12.08 - - Cl. No. 1.7(b), 15.1, 25.1 modified & cl. No. 15.7, 15.8 deleted as per Rly Bd letter no.

98/Elect(G)/150/9/Pt.(Escalator) dt. 15.12.08

2. 2nd 23.04.09 - - Additional para inserted in cl 1.7 and 2.4. Cl 1.5, 2.8, 7.0 & 20.5 modified and Cl 1.7(iv) deleted, as per Rly Bd

letter no. 98/Elect(G)/150/9/Pt.(Escalator) dt. 23.04.09

3. 3rd 24.06.09 - - New Clauses 2.4.5, 2.4.6, 2.6.5, 2.5.3, 2.14.4 added; clauses 1.1, 1.5, 2.5.1, 2.5.2, 2.10, 7.0, 9.1.11, 9.2, 10.9, 15.3, 16.1, 27.0 modified and clauses 1.7 b (iii) and 18.0

deleted.

4. 4th 17.07.09 - - Clauses1.1, 1.5, 7.0 amended

5. 5th 27.09.2010

Clauses No. Index, 1.7b(ii), 2.16, 4.0 ,7.0, 8.0, 9.0 11.0, 12.0, 12.1.1, 12.1.2, 12.1.3, 12.2.1, 12.2.2, 12.2.3,

12.2.5, 12.3.1, 12.3.2, 13.1, 14.0, 20.2, 20.5, 22.3, 23.0, 23.1, 23.2, 24.1, 24.2, 24.3, 24.4, 24.6, 24.8, 25.1, 25.2,

25.3, 26.1, 26.3, 26.6, 26.8.1, 27.0, 27.1, 27.2, 28.1, 28.6, 29.1, Definitions (Part-ii b)Modified&Clause

nos.15.0 and 26.4 deleted as per Railway Board letter No. 98/Elect.(G)/150/9/Pt. dated 10.09.10.

6 - - 1 17.09.2012 Rationalized the spec and major editorial changes to improve its readability and clarity.

of 48 Effective from Sept, 2012 Specification no. RDSO/PE/SPEC/TL/0095 (Rev ‘1’)- 2012


INDEX

Foreword 3 1.0 Scope 3 2.0 System Details & Schematics (Construction) 5 3.0 System Operating Conditions 17 4.0 Infringement of Patent Rights 17 5.0 Governing Specifications 17 6.0 Service Conditions 17 7.0 Technical Specifications 18 8.0 Other Key Technical Information Related To Escalator, To Be Supplied

By Each Bidder Along With Their Offer 19

9.0 Safety Devices/ Features Required 21 10.0 General Requirement 28 11.0 Electromagnetic Compatibility Requirement (EMC) 29 12.0 Testing & Inspection 29 13.0 Escalator Installation and Final Acceptance Testing 30 14.0 Withdrawal of Approval 30 15.0 Lighting 31 16.0 Accessibility 31 17.0 Movement Of Material 31 18.0 Installation & Commissioning 32 19.0 Labeling And Marking 32 20.0 Packing, Shipping And Delivery 32 21.0 On-Site Support To Contractor 32 22.0 Warranty 33 23.0 After sales services 34 24.0 Maintenance 34 25.0 Training Program 35 26.0 Operation And Maintenance Manuals 35 27.0 Quality Assurance 36 Annexure-1 37 Annexure-2 38 Annexure-3 40 Definitions 45



TECHNICAL SPECIFICATIONS FOR PASSENGER-ESCALATORS TO BE INSTALLED AT VARIOUS RAILWAY-STATIONS OF INDIAN RAILWAYS

FOREWORD

This specification defines the objectives, guidelines and requirement for the design, manufacture, supply, installation, testing and commissioning of heavy duty escalators at railway stations of Indian Railways (IR).

1.0 SCOPE 1.1 This specification covers design, manufacture and supply at site, installation,

testing and commissioning of heavy-duty, reversible escalators to be provided at the Railway Stations of Indian Railways for semi outdoor application. Railways shall provide adequate shade on the top and the same shall be extended on the sides so as to offer protection to the escalator from sun and rain.

1.2 The Escalator shall be of State-of-the-art technology, having nominal step

width of 1000mm, with 4 nos. horizontal Steps on top and bottom landing area and the nominal speed will be 0.5 m/sec. For the aforesaid step width and nominal speed, maximum carrying capacity as per EN115-1:2008 will be 100 passengers per minute. The escalator shall be complete with all safety features and shall fully comply with International Standard EN-115 latest version.

1.3 Escalators shall be heavy duty reversible type and capable of operating safely,

smoothly and continuously in both directions for a period of not less than 20 hours a day, seven (7) days a week with an alternating passenger load reaching 100% of Contract Load (120kg per step) for two hours and 50% of Contract Load for the following hour within the environmental conditions as stated in the specification and at the location where the escalators are to be installed.

1.4 The vertical-height of foot-over-bridge (passenger walking-level) from the ground-level generally varies between 4.5 meter to 8.0 meter at the Railway Stations. In exceptional cases, escalator of rise even higher than 8.0m might be required.

1.5 The angle of inclination of escalator shall be 30° and minimum transition

radius shall be 2.6 meters at the upper landing and 2.0 meters at the lower landing.

1.6 The purchaser/ user railways shall furnish the exact information by filling in all the entries, as per the format given in Annexure 1.

1.7 The contractor’s scope of work shall include but not be limited to the following works:-

a) Provision of escalators in stations for passenger movements.



b) All associated civil works for providing

i) pit for housing escalator parts, adjacent sump of size 0.5m x 0.5m x 2m, etc.

ii) intermediate support (if vertical rise is more than 5m)

c) Transportation of material and equipment for installation purpose.

d) Spare parts, special tools, testing and diagnostic equipment and measuring instruments (if asked for in the tender).

e) Training.

f) Documentation.

g) Control and monitoring system for Escalators.

h) Maintenance for specified period.

i) Services. 1.8 Railways’ scope of work

As for site preparation works (civil and electrical), with the exception of items of works specifically kept under contractor’s scope by this specification, all the other works will automatically fall under railways’ scope. The site preparation works to be undertaken by railways may typically include: Canopy above the escalator; FOB extension and load bearing support pillars thereof; suitable arrangement to prevent the public from falling down from the sides at top landing; a floor (flush with escalator floor plate at lower landing) at a level higher than the platform floor level and a ramp to bridge the (higher) escalator floor plate level and the (lower) platform floor level; provision of portable pump(s) and their utilization for pumping out of rain water accumulation in the pit, during monsoons; covering up of open spaces enclosed between escalator-wall and escalator-escalator; triangle protection; anti-climbing, access restriction and anti-slide arrangements; railing or other suitable arrangement to ensure that the public approaches the escalator entry in a straight/ orderly manner; a lockable closet/ enclosure for the controller (see Cl. 2.2.6), provision of earthing pits for achieving an earthing resistance of max 1.0 Ω, making LT power supply available for the escalator, etc. The level of the escalator Floor Plate should be higher than the platform floor level by approx. 100mm or as decided by railways’ site engineer. This is absolutely essential for minimizing the chance of rain or cleaning water running into the escalator truss. To minimize the risk of passengers stumbling/ falling down due to the two differential floor levels, railways shall ensure the following: just after the escalator floor plate, there would be a min 315mm long stretch of anti-slip horizontal floor surface (flush with the escalator floor plate) and thereafter, there will be an anti-slip ramp (angle: 10o approx) descending towards the platform floor level; this will in no way substitute/ dilute the requirement laid down in EN-115 Cl. A2.5. The contractor will interface and co-ordinate with the railway and its agency(ies) undertaking the site preparation works. The complete responsibility of interfacing and co-ordination shall be of the contractor till final commissioning and handing over of the escalator to the Railways.



2.0 SYSTEM DETAILS & SCHEMATICS (CONSTRUCTION)

The complete Escalator shall comprise of all parts and accessories, which are necessary for its efficient operation, whether specifically mentioned or not. The key parts and accessories along with their functions and features are listed as follows:

2.1 Drive Unit 2.1.1 Each Escalator shall be independently driven by a geared type driving

machine (or traction machine), comprising mainly of the driving motor, a coupled Gear Box unit (for Speed reduction) and an electrically released and mechanically applied Brake (for stopping the escalator). A VVVF converter shall control the Driving Motor.

2.1.2 Each traction machine shall be mounted within the truss or the machine pit and

shall be removable en-bloc from the truss for repair or maintenance. Suitable lifting points shall be provided.

2.1.3 The escalator’s driving machine shall be suitable for operation on 3-phase,

415Volt ±10%, 50Hz ± 3% AC supply and it shall comply with IS: 325/IEC 60034. The Total Harmonic Distortion (THD) due to escalator motor drive shall be within the following limits:

Current (I)* Maximum THD (%) in each phase I < 20A 20% 20A ≤ I ≤ 200A 15%

* Fundamental current of motor drive at no load and rated speed

2.1.4 The 3-phase Induction Motor shall be totally enclosed with external cooling fins having minimum IP-55 Protection and class F Insulation level.

2.1.5 Sound level of the system shall not be more than 65 dBA at 1 meter from the

balustrade. The required acoustic treatment shall be provided as necessary, to meet this requirement.

2.1.6 The contractor shall submit information on his past study on vibrational

analysis of escalators, if any. In subsequent amendment/ revision of the spec., IR may consider specifying vibration measurement through Fast Fourier Transform (FFT) analyzer and lay down specific limits for vibration.

2.1.7 The overall efficiency of the combined motor and gearbox shall not be less than

82% at full load. 2.1.8 The starting current of motor shall not exceed 3.5 times full load current. The

starting current characteristic and the speed/torque characteristic for different duty ranges shall be submitted for acceptance by the purchaser.

2.1.9 The brake shall automatically bring the escalator to a halt whenever the power

is interrupted, or any of the operating and safety switch is operated. The



minimum and maximum stopping distances for the various conditions are as follows:

(a) Without load: 0.20m (minimum) (b) With full load: 1.00m (maximum) 2.1.10 A device shall be provided to prevent the starting of the escalator if the brake

does not operate properly. An indicator to indicate the wearing of the brake lining shall also be provided.

2.1.11 Provisions for hand winding and the necessary tools to effect the hand

winding shall be provided for each escalator. 2.2 Controller

2.2.1 The escalator’s motion, travel-direction, speed, stopping, etc. shall be

controlled by a compact and reliable PLC/microprocessor-based controller that is specifically designed for escalator operation. A LCD display panel and means for programming the system shall be provided at the controller.

2.2.2 The controller shall be of a proven design and would ensure continuous-

operation of the escalator over its Service-Life. The controller shall have PLC/microprocessor based diagnostic system with self-checking feature and provision for indicating/ displaying common Faults (that may occur during the escalator’s operation) by a fault-code or fault’s brief description, on an on-board and easily-visible LED/ LCD based display-unit. This would enable the maintenance personnel to pinpoint specific fault(s) and rectify them quite-quickly, thus ensuring minimum downtime of the escalator. In addition, serial interface output ports shall be provided at the controller to allow the system to be connected to a notebook computer for downloading the historical data for trend analysis. Suitable compatible driver software has to be provided to download data for analysis and presentation by Microsoft office software. Provision of suitable arrangement for downloading the historical / fault data in a Hard Disk / Pen or Flash Drive is to be made in escalator control panel itself. There should be provision of an independent data downloading port.

2.2.3 The controller shall have the facility for interfacing (through suitable ports, viz

RS-232/ RS-485/ USB/ Ethernet etc.) with a PC based Remote Monitoring system (RMS) that may be planned by the railways to be housed in the station building control room.

2.2.4 The power and control wiring shall be segregated in the controller. 2.2.5 The escalator controller shall be housed in an IP55 protected, 1.5mm thick

powder coated cabinet with hinged door (preferably of double door design), lockable with a dedicated key. Only the essential operating buttons, switches, etc. shall be accessible to operations staff. Maintenance personnel would however be able to open the lock for gaining access to the complete controller.



2.2.6 Controllers and other accessories such as incoming isolators, interface terminal boards (ITBs), switches, etc. shall be placed within a railway provided closet/ enclosure to completely bar the access of unauthorized persons. This closet/ enclosure shall be located outside the truss. The recommended location for the closet/ enclosure shall be on the railway platform, below the escalator top horizontal portion or else below the FOB extension/ upper landing i.e. within the columns of the FOB extension of the escalator. In as far as possible, location of the controller should be within 10m of the escalator. At certain sites where the aforesaid is not feasible, an alternate location may be decided by railways in consultation with the contractor. Further, wiring work including conduits/ trunking from the incoming isolators to escalator equipment shall be provided by the Contractor. The Contractor shall co-ordinate with railways for the layout of the equipment. Necessary approval of drawings shall be taken from the purchaser.

2.3 VVVF Converter

2.3.1 The escalator shall comprise of a VVVF converter (variable speed control),

functionally integrated with the escalator controller to control the driving motor. On installation, this shall ensure the escalator’s movement and speed control, viz - starting and normal speed of the escalator on detecting the incoming passenger(s), crawling speed (less than 0.2 m/sec) in the absence of passengers and/or stoppage.

2.3.2 The VVVF Converter shall also control the acceleration/ de-acceleration

during the motor starting/ stopping for reducing/ limiting the starting current and the frictional wear and tear of the brake liner.

2.4 Truss and Track 2.4.1 The escalator shall be provided with Structural steel truss or girder designed to

support the escalator’s dead weight which shall include any exterior claddings and decking extensions plus passenger load. Passenger loading shall be assumed as 5,000 N/m2. The truss shall also be designed to support an additional load of the outer cladding panels and truss claddings up to a minimum load of 150N/m2. The truss design for IR must ensure that for an escalator vertical rise upto 5m, there is no need for intermediate support.

2.4.2 The truss design shall also ensure required safety to sustain the Steps and

running Gear in operation. In the event of failure of the track system, it shall retain the running gear in its guides.

2.4.3 The construction and design of truss shall be such that it allows for easy

inspection of the interiors of the escalator. 2.4.4 Maximum deflection of Truss shall not exceed 1/1000th of the distance

between supports (distance between the supports for this purpose being not less than that corresponding to a 5m vertical rise of escalator without intermediate support). This will have to be physically proven by a deflection test for one escalator.



2.4.5 Cladding of the truss shall be done with 1.5mm thick SS 304. 2.4.6 The truss of escalator shall be hot dip galvanized up to minimum thickness of

80µm. Other parts inside the truss such as track, return station, shaft etc. shall be given suitable anti-corrosive treatment with zinc plating/ painting or similar process.

2.4.7 The track system shall be constructed of steel with zinc plating. The track

surface shall be straight and smooth. All joints, where possible, shall be diagonal across the width of the running surface. Maximum deflection of track system shall be designed not to exceed 1.00mm between any two adjacent track supports under 6,000 N/m2. Anti-jump track above step roller will restrain step up-lifting near comb area on both landings.

2.4.8 The step roller track and the chain roller track wearing surfaces shall be of

minimum 5mm and 3mm thickness on the passenger and return side respectively.

2.5 Balustrade 2.5.1 The escalator shall be provided with a solid inclined balustrade on its each

side, having adequate mechanical strength and rigidity. 2.5.2 The Interior and Exterior Panels shall be fixed in a manner to withstand the

stresses and impacts expected during operation and use of the escalator at its full capacity. The balustrade height shall be minimum 1000mm.

2.5.3 Material of the skirting shall be SS 304 having thickness of 2.0 mm for skirt

panels and 1.5 mm for remaining panels. 2.5.4 The parts of the balustrade facing the steps shall be smooth and flush.. 2.5.5 (a) The balustrade shall be designed to withstand the forces as per the

requirements of EN-115. Moreover, the interior panel, skirting and the skirt deflectors also shall withstand the forces as per the provisions of EN-115

(b) Suitable provision shall be made in the balustrade for dampening of noise and vibrations. This is done by providing coating of noise and vibration dampening material. In underground stations, the coating is required to be of fire resistant material.

2.5.6 Suitable materials or suitable type of lining shall be provided underneath the

deflector device in order to achieve a coefficient of friction as per the provisions of EN 115.

2.5.7 Appropriate measures shall be taken to discourage people from climbing on

the outsides of the balustrade, if there is a danger of people falling from them. This work will fall in railways’ scope.



2.5.8 For escalators adjacent to walls, access restriction devices shall be provided. Where handrail level balustrade decking are provided between escalators and adjacent walls, anti-slide devices shall be provided. These works will fall in railways’ scope.

2.6 Handrail and Handrail Drive System

2.6.1 The escalator shall be provided with black colour handrails made of a special, high-quality fire retardant water-repellant synthetic rubber material, having long-durability. The minimum breaking strength of handrail joint shall be greater than 85% of the minimum breaking strength of the handrail. The hardness of the outer stock shall not be less than Shore 700+-5A0.

2.6.2 The handrails shall move in the same direction and at a speed with a

tolerance of – 0% to + 2% relative to the actual speed of the steps. 2.6.3 The handrail drive system shall be provided with guides immediately before

and after the drive wheel. The returning portion of the handrail shall be supported by guide rollers at not more than 2.0 m interval. For guidance of handrail at newels, guide rollers shall be provided. Newel wheels shall be provided if the purchaser specifically asks for the same (see Annex 1 item 6). Adequate provisions shall be provided to maintain proper tensioning throughout the service life of the handrail and prevent tightening/loosening and excessive heating up of the handrail during operation. The temperature rise of the handrail during operation shall not exceed 6ºC above station ambient temperature.

2.6.4 The handrail shall overlap sufficiently with the handrail decking (top deck), to

prevent pinching and trapping fingers or hands due to running clearance. The lips at the handrail shall be of sufficient rigidity to prevent the handrail from being easily removed from the handrail guides by a force of 300N.

2.6.5 The material of handrail guide shall be SS 304. 2.6.6 Appropriate action shall be taken to prevent the build up of static electricity in

the handrail. 2.6.7 Lifetime grease packed roller bearings are preferable for newel wheels.

However, if non-lifetime bearings are used, greasing nipples for the wheel bearings shall be provided.

2.6.8 Where newel wheels are provided, the newel stands shall be of sufficient

rigidity and suitably braced to the main structure of the truss to prevent undue distortion. Provision shall be made to permit checking of alignment of the newel wheels on site.

2.7 Step Tread 2.7.1 The escalator Steps shall be made of corrosion-proof Casting-grade

Aluminum Alloy, having sufficient mechanical strength and good construction



to fully satisfy the intended purpose of their use i.e. carrying the peak load of passengers without distortion.

2.7.2 Each step shall be supported on four wheels, two of which shall be the step

chain, wheels and shall be capable of carrying the basic load with the safety factor as per 2.7.3. Individual step loading shall be assumed as 6,000N/m². The design of the mounting of all wheels on the step shall ensure that the centre line of the wheel shall remain perpendicular to the running track under all the load conditions. Step dimension shall have a tread width of at least 400 mm deep and not more than 210 mm high.

2.7.3 Safety factors used in the design shall, as a minimum, conform to the following norm:

• Where no specific requirement/ parameter has been laid down in this spec., BS EN 115-1:2008 latest version (as applicable for Public Service Escalators) shall apply.

2.7.4 The step shall be one piece, pressure die cast, high wear and corrosion

resistant aluminum alloy. The step casting shall bear a marking, which clearly indicates the month and the year of manufacture.

2.7.5 The step shall be type tested according to EN 115 (Latest version). 2.7.6 The tread surface of each step shall be slotted in parallel-direction to the

travel of the steps. 2.8 Main and Step Chains 2.8.1 The drive unit shall be connected to the main chain wheel (attached to the

main shaft) with a duplex chain of minimum safety factor 8. The Main Shaft shall further drive the Step Chain Bands.

2.8.2 The Step Chain Band shall be of endless roller type located on both sides of

the moving steps. Minimum step chain strength for upto 10m escalator rise will be 260kN. For escalator rise above 10m and upto 18m, minimum step chain strength will be 400kN.

2.8.3 The chain rollers/wheels shall have durable elastomer materials bonded to a

metal die case hub. The shore hardness of the tyre materials shall be 92o ± 3oA when cured. The bond shall have sufficient strength to avoid de-tyring under all load conditions.

2.8.4 The chain rollers shall be located inside the chain links. Chain rollers will be

positioned outside the chain links, if the purchaser specifically asks for the same (see Annex 1 item 5). The nominal diameter of chain roller shall be 100mm (roller outside)/ 75mm (roller inside). The roller shall have a nominal width of 25 mm.



2.8.5 Each Step Chain shall be provided with an integrated Tension Device to ensure its proper tension under varying load conditions.

2.8.6 Bearing should be sealed type and shall have a design life of at least 110,000

operating hours under operating conditions. 2.9 Automatic Lubrication Device 2.9.1 The escalator shall comprise of an in-built automatic lubrication device, to

lubricate the main driving-chain, step-chain and handrail chain automatically, which can ensure their smooth-operation for a long period and thus shorten the maintenance downtime.

2.9.2 Corrosion resistant, oil tight drip pans of galvanized sheet shall be provided

for the entire length of the truss. Drip pans shall be designed to collect and drain off both oil from the chain and water that may enter through the landings, floor plates, exposed portions of escalators or from fire suppression systems. All gaps shall be properly overlapped/ sealed to prevent leakage. Means shall be provided to drain and collect any excess lubricating oil from the chains to removable container(s) at the lower landing machine pit for easy removal and cleaning.

2.9.3 Guards shall be provided at the truss adjacent to the main drive chain,

handrail drive chain and step chain to reflect oil splatters from the chains back to the oil drip pan. No oil splatter shall be allowed to get onto the truss, the back of the outer cladding panels, the outside of the truss and brakes. There shall be no oil spillage through the outer panels, claddings or the truss to the surrounding areas. Proper means shall be provided to prevent the problem of oil spillage on to machinery spaces, step risers and step surfaces.

2.10 Comb Plate 2.10.1 The escalator comb plates in the entrance/ exit areas must have easily

replaceable comb segments, having teeth that interlock deep into the steps. In the event of some foreign body’s penetration into the comb segments, safety contacts must bring the escalator to a halt. To activate the safety contacts, the comb plate must be able to slide horizontally.

2.10.2 The comb plate structure shall withstand a load of 6000N/m2 with a

deflection not exceeding 2.0 mm. Comb plate should comply with anti-slip properties as per EN-115.

2.10.3 The load which may cause a comb tooth to break at its tip shall be neither

less than 700N nor more than 1900N.

2.11 Landing Plate



2.11.1 The landing plate of the escalator meant to provide a secure foothold, must be preferably made of etched Stainless Steel ASTM (or equivalent) - SS316 grade and shall have an Anti-slip Pattern as per EN-115.

2.11.2 The floor plate shall withstand a uniformly distributed load of 6000N/m2 over

its entire area, the deflection shall not exceed 4mm during load application and there shall be no permanent deformation after the load is removed.

2.12 Key Operated Start Function

The escalator operation shall be started/ switched-off by a special key provided along with the escalator.

2.13 Traffic Direction Light

The escalator shall have traffic direction light of distinct color at highly-visible location(s) on the escalator, to indicate the direction of its movement to the approaching passengers and thus, prevent their wrong-way Entry.

2.14 Electrical Works / Items 2.14.1 All electrical works and switchgear for the escalator installation shall conform

to the Indian Electricity Rules 1956 (with latest amendments). 2.14.2 All cables and wiring for open/elevated stations shall be fire retardant. For

cables to be used in underground stations, the additional requirement is that they shall be made from low smoke and halogen free materials. No bare Conductor shall be used in any escalator as it may cause electrocution danger to the personnel. All cables except those within the enclosed controller shall comply the following requirements:

i) Power and control cables shall be rated for 1100V and 600V grade respectively.

ii) The conductor shall be of stranded conductor composed of plain annealed copper wire complying with IEC 228, Class 2.

iii) The insulation shall consist of an extruded layer of cross-linked polyethylene complying with IEC 502.

iv) Fire retardant, low smoke, halogen free materials shall meet the following requirements:

a. London Transport Executive Three Metre Cube Smoke Emission Test, using optical measuring instruments. The maximum value of absorbance AO (ON), AO (OFF) shall be 0.8 & 1.2 respectively.

b. The US National Bureau of Standard Smoke Chamber Test, used to evaluate plaque samples of materials of constant thickness. (NFPA-258 Smoke Generation of Solid Materials 1982). The maximum specific optical density shall be 170 under the non-polluted condition.



c. The flame propagating criteria of US IEEE Standard 383, with a minimum test short circuit time of five minutes, in the IEEE Standard 383 test.

d. IEC 332 Parts 1 and 3, Category B, tests on single and bunched cables under fire conditions.

e. Limiting Oxygen Index of at least 30, to ASTM D 2863.

f. A temperature index (TI) of 260°C to ASTM D 2863.

g. All insulation is to be moisture and heat resistant, with temperature ratings appropriate to the application conditions, and in no case lower than 120°C.

h. When a sample of the cable is subjected to a combustion test for the determination of the amount of halogen acid gases (other than hydrofluoric acid) as set out in IEC 754 - Part 1, the halogen acid evolved shall not exceed a maximum of 0.5%.

Fire retardant materials shall meet the requirements of item c, d, e, f and g only.

2.14.3 All electrical equipment supplied and installed shall at least have the

following class of protection for dust and water:

Machine : IP 55 Controller : IP 55 Isolating switches : IP 55 All safety switches : IP 55

2.14.4 In general, bolt, nuts, shims and other hardware should be zinc plated.

Fasteners visible to the public shall generally be of stainless steel. The generally applicable engineering principle will be that fasteners shall be equal to or of greater corrosion resistance than the most corrosion resistant metals being fastened.

2.14.5 All contactors, relay contactors and safety switches shall comply the

requirements of EN 115. 2.14.6 Insulation resistance between conductors and earth shall be as per the

provisions of EN 115. 2.14.7 Cross-sectional area of the conductors of safety circuits shall comply EN

115. 2.14.8 Safety related connectors and devices shall be of plug-in type which can be

extracted without the use of a tool and shall be impossible to re-insert them incorrectly.

2.15 Grease/ Oil/ Dirt and Water (separate) Collector & Drainage Sumps

Separate collector and drainage sumps for loose/ falling/ accumulated - grease/ oil/ dirt and water shall be provided in the escalator, at its lower return



station, to ensure the escalator’s cleanliness w.r.t. these elements and thus, prevent any likely hazard due to them.

2.16 Design criteria and Submittals

2.16.1 Design criteria

The design shall generally meet the following criteria: -

a) Application of state of the art technology

b) Service proven design

c) Design life 30 years

d) Minimum life cycle cost

e) Low maintenance cost

f) Use of interchangeable, modular components

g) Extensive and prominent labeling of parts, cable and wires

h) Use of unique serial numbers for traceability of components

i) High reliability

j) Energy efficient

k) System safety

l) Adequate redundancy and factor of safety

m) Fire and smoke protection (provision of smoke detectors, etc.)

n) Use of fire retardant materials

o) Environment friendly

p) Adherence to operational performance requirements

q) Indigenization (contractors are encouraged to introduce indigenization in part/ full; in future, the same is likely to be made mandatory)

r) Safety against garments such as Saree, loose clothes, etc.

s) All ball or roller bearings whether or not sealed for life time greasing shall have a design life of at least 110,000 operating hours under operating conditions.

t) Safety against water flooding in pit. 2.16.2 Submittals

A. Every bidder must submit the following documents along with the offer:

A.1 Typical general arrangement/ layout diagram, which shall convey the following minimum information:

a. Vertical rise



b. Horizontal span length with break-up of constant span at upper and lower landing

c. Step width d. Handrail type e. Handrail center to centre distance f. Width of truss g. Width of escalator h. Width of lower end opening i Detailed pit dimensions j. Width of top end opening k. Intermediate support, if involved

A.2 Clause-by-clause confirmation of compliance to/ deviation from this

specification.

A.3 Technical information asked for in Cl. 8.0 B. The contractor (successful bidder) will be required to submit the following

drawings, designs, data and type test reports for approval by the purchaser:

B.1 Fully dimensioned layout in plan and elevation indicating component locations, structural supports, access spaces, and point of entry.

B.2 Loads on supporting members, reaction points and loads, and deflections under full load. Contractor shall be responsible that these parameters are within safe limits and shall provide the supporting calculations.

B.3 Truss FEM analysis shall be submitted for the following two cases: 5m rise without intermediate support; and for maximum rise involved in the contract with intermediate support (if rise is more than 5m). The FEM analyses should report the deflection, stress and the factor of safety thereof. Along with FEM analysis, detail of the truss must also be submitted by the contractor for proper appreciation and quality supervision by the purchaser.

B.4 Details of comb, comb plate, landing plate, balustrades, deck, skirt panels, push button fixtures, key switches and required signage.

B.5 Technical data and details of track system and supports, including drive chain and gear train; step chain including chain pitch, step and trailer wheels; size, shape and material of each component.

B.6 Technical data and details of the drive system, step drive system, handrail drive system, relevant shafts, tension devices, brake system controller, safety devices and switches. Calculation for life of bearings.

B.7 Layout of electrical system including motor, control panel; disconnect switches directional start and stop key switches; emergency stop switches and covers; scheme for electrical grounding of escalator; light fixtures and control devices; schematic diagram including single line power diagram of the escalator system, control wiring diagram and sequence of operation, indicating interface connections.

B.8 Step chain detail for material configuration, arrangement and lubrication requirement.



B.9 Transition radii at upper and lower end; details of step assembly including axle, step tread, rollers, frame and riser; safety brush material, mounting method and profile.

B.10 Details of fire protection system

B.11 Type test reports in respect of systems/ sub-systems that will form a part of the escalator to be supplied

B.12 Type test report in support of EMI/ EMC compliance C. The contractor (successful bidder) will be required to submit the following

Operation and Maintenance Manuals (one soft and one hard copy per station):

C.1 Drawings, installation and maintenance instructions, and other data pertinent to the components used in escalator systems, including detailed repair data for all components, including disassembly, inspection/ gauging/ torque requirements, inspection and testing schedules, reassembly, testing methods and other related information. Manuals shall cover all mechanical and electrical components, operating panels, controls and indicators. Exploded view drawings shall be included to facilitate repair and maintenance functions.

C.2 Bill of Materials (BOM) for each escalator. The BOM will be a list of all assemblies, subassemblies and replacement components/ parts of the escalator. This detail will be required in the future for placing orders on the OEM for individual replacement parts and for other managerial purposes.

C.3 Maintenance tool manuals. D. The contractor (successful bidder) will be required to submit the following

information in respect of safety factors and safety implication of failures: D.1 Strength and safety factor in respect of main drive chain and step chain

D.2 MTBF (mean time between failures) in respect of fail safe circuits, as called for in EN-115

D.3 Short technical note, highlighting the escalator sub-system failures which can impact safety.

D.4 Short technical note listing the failures whose simultaneous occurrence can lead to accident situations. Steps that can be taken to avoid such accident situations.

E. The contractor (successful bidder) will be required to submit the following electrical calculations for approval by the purchaser:

E.1 Electrical/ Mechanical calculations for the sizing of driving machine, motor and brake.

F. The contractor (successful bidder) will be required to submit the following

brake calculations:



F.1 Detailed calculations for the brake. This will include: braking distance and deceleration rate for all loads from no load to the machinery rated load, and for up and down directions.

2.17 SAFETY SIGNS 2.17.1 All signs shall be written in clearly legible characters in bilingual (as decided

by the purchaser) where the escalator is in operation. 2.17.2 The following mandatory signs shall be provided by the contractor and fixed

in the vicinity of the entrances as per the dimensions mentioned in EN 115:

i) “Small children shall be held firmly” ii) “Dogs shall be carried” iii) “Use the handrail” iv) “Push chairs not permitted”

3.0 SYSTEM OPERATING CONDITIONS The escalator shall be able to make use and operate at the under-mentioned

power supply conditions. Power supply shall be made available by Indian Railways near the escalator installation point:

a) For power supply: AC 3-phase, 415Volts ± 10%, 50Hz ± 3%. b) For lighting supply: AC Single-phase, 220Volts ± 10%, 50Hz ± 3%.

4.0 INFRINGEMENT OF PATENT RIGHTS

Indian railways shall not be responsible for infringement of patent rights arising due to similarity in design, manufacturing process, use of the components used in design, development and manufacturing of escalator and any other factor which may cause such dispute. The responsibility to settle any such issue lies with the Contractor.

5.0 GOVERNING SPECIFICATIONS

The escalator shall comply with the following Standards:-

• EN-115: safety rules for construction and Installation of escalators and passenger conveyers.

• IS-4591: Code of practice for installation and maintenance of escalators.

Note: Latest version of the above standards shall be applicable.

6.0 SERVICE CONDITIONS 6.1 The escalators shall be installed at the notified Railway stations all over India and

shall be able to perform under the service conditions prevailing there. 6.2 Moreover, the escalators shall be capable of performing in the tropical climate of

India, under the extreme environmental conditions listed below:



Maximum Ambient Air Temperature

550C

Minimum Ambient Air Temperature

-50C

Max. Relative Humidity 100% Atmosphere Extremely dusty and dry weather and desert

terrain in certain areas. The dust content in air may reach as high values as 1.6mg/m³.

Coastal Areas The equipment shall be designed to work in coastal areas in humid, salt laden and corrosive atmosphere.

The maximum value(s) of the Conditions in the Coastal Areas will be as follows:

Max. pH value 8.5 Sulphate 7.0mg/litre Max. concentration of Chlorine 6.0mg/litre Max. conductivity 130 micro Siemen/ cm Annual Rainfall Ranging between 1750 to 6250 mm with

thunder storm Altitudes Not exceeding 1200m above Sea-level

7.0 TECHNICAL SPECIFICATIONS

Some of the salient points of the spec. are summarized as follows:

• Application : At Railway stations – semi-outdoor application. Railway shall provide adequate shade on the top and extended on the sides of the escalators.

• Nominal speed : 0.5 m/sec in normal operation.

• Angle of inclination

: 30º

• Vertical rise : Between 4.5 meter and 8.0 meter (To be exactly specified by user railways in Annexure 1). In exceptional cases, escalator rise may be even more than 8m.

• Horizontal span : Shall be based on the Contractor’s design and other parameters, namely vertical rise, number of horizontal steps, inclination and transition radius, etc.

• Truss Design : For vertical rise upto 5m, no intermediate support shall be required.

• Maximum passenger carrying capacity

: 100 passengers/ min at nominal speed of 0.5 m/sec.



• Applicable Standards

: EN-115; IS-4591 (latest versions)

• Power supply : AC 3ø, 415V±10%, 50Hz±3%

• Lighting supply : AC 1ø, 220V±10%, 50Hz±3%

• Step Chain strength

: 260KN for escalator rise upto 10m; 400KN for rise above 10m and upto 18m

• Chain rollers : Inside/ Outside (see Annex 1 item 5)

• Handrail guide at newels

: Guide rollers/ Newel Wheel (see Annex 1 item 6)

• Horizontal steps : Number of horizontal steps at both the upper and lower landings shall be 4.

• Landing plate : Etched stainless steel ASTM (or equivalent) SS316 grade with anti-slip pattern

• Moving step’s material

: As per clause no. 2.7

• Nominal step’s width

: Minimum 1000 mm

• Balustrade panel material

: ASTM (or equivalent)- SS304 hairline finish

• Balustrade height

: As per clause no. 2.5.2

• Handrail material

: As per clause no. 2.6.1

• Handrail color : As per clause no. 2.6.1

• Start function : Key operated switch

• Control switchgear protection

: IP 55

• Dirt/ oil/ grease and water collector & drainage sumps

: As per clause no. 2.15

Note: Each Bidder must submit their Compliance or Deviations in a “Compliance Statement”.

8.0 Other Key Technical Information related to Escalator, to be supplied by

Each Bidder, along with their Offer:

SN Feature RDSO Spec. Clause Details




1 Escalator manufacturer

2 Escalator brand name

3 Escalator model number

4 Sound level Cl. 2.1.5

5 Drive unit arrangement Cl. 2.1

6 Type of motor Cl. 2.1.4

7 List of motor sizes (KW)

8 THD of drive Cl. 2.1.3

9 Efficiency (Motor & Gearbox)

Cl. 2.1.7

10 Class of insulation of motor

Cl. 2.1.4

11 Protection class of motor Cl. 2.1.4

12 Gear type & material Cl. 2.1.1

13 Coupling type & material

14 Main drive chain’s material & safety factor

Cl. 2.8.1

15 Step chain/ band’s Material & breaking strength

Cl. 2.8.2

16 Location of step and chain roller (outside/inside the step chain - see Annex 1 item 5)

Cl. 2.8.4

17 Roller diameter and width Cl. 2.8.4

18 Handrail guidance at newels (guide rollers/ newel wheel - see Annex 1 item 6)

Cl. 2.6.3

19 Controller - make/ model Cl. 2.2

20 VVVF converter - make/ model

Cl. 2.3

21 Truss structural material Cl. 2.4.1




22 Truss Galvanization thickness

Cl. 2.4.6

23 Truss surface treatment Cl. 2.4.6

24 Truss construction details

25 Maximum rise up to which truss will not require intermediate support

Cl. 2.4.1

26 Details of intermediate support (for rise above 5m)

27 Details of brake mechanism

28 Lubrication mechanism (Type/ Model)

Cl. 2.9

9.0. SAFETY DEVICES/ FEATURES REQUIRED

9.1 Operating and Safety Devices Operating and safety devices conforming to the following requirements shall

be provided:- 9.1.1 Motor Overload & Thermal Protection Device

a) The driving motor shall be protected against excessive current due to either overloading or short-circuiting by means of a suitable device to be submitted for approval of the purchaser. Such protective devices shall be provided for each phase of the motor winding. Suitable provisions shall be made for protection against single phasing, unbalance loading and any other abnormal condition. After the intervention of this safety device, the power supply to the motor shall be disconnected and it shall only be possible for a competent person to reset it back to its normal working condition.

b) If the detection of excessive current depends upon a temperature increase

in the motor winding, such a device may be automatically reset after the fault is removed and the winding cooled down sufficiently, but shall not restart the escalator automatically.

c) Built in type thermal protection, if offered, shall conform to BS 4999 Part

72. 9.1.2 Starting switch



Spring return key operated starting switch with running directions marked on the faceplate shall be provided at both ends of the escalator. These switches shall be positioned to enable the operator, when using the key to start the escalator, to see the entire escalator. The key shall be removable only in the neutral position.

9.1.3 Service Stop Switch Service switches shall be provided within the machinery spaces at both ends

of the escalator. The switches shall be conspicuously and permanently marked and located such that switching can be accomplished without passing or reaching over any part of the machinery. The operation of these switches shall disconnect electrical power to the controller and the drive mechanism and shall activate the brakes. The switch shall be rated to interrupt the starting current of the motor and the fuses shall be rated for the available fault current at the switch. Inspection run shall also be prohibited.

9.1.4 Emergency Stop Switch Recessed type, momentary pressure, emergency push button stop switches

with extended sleeve to protect against accidental operation shall be provided on each escalator. A minimum of one switch shall be located in conspicuous and accessible positions at the incline section or at the newel at both ends of the escalator. The switch provided at the incline portion shall have protection from the dust ingress. The distance between the switches shall not exceed 15 m for the escalators, otherwise, additional switches shall be provided. The operation of these switches shall disconnect electrical power to the drive mechanism and activate the brakes(s). It shall not be possible to start the drive mechanism by the use of these switches. Proper signage shall be displayed so that the location of the switch can be easily identified.

9.1.5 Speed Governor Speed governor shall be provided which disconnects electrical power to the

drive mechanism and activates the brake, should the speed of the steps exceed the rated speed by more than 20%.

The speed governor is not required in cases where alternating current

induction driving motors are used, provided the slip does not exceed 10% and the motor is directly connected to the drive mechanism.

9.1.6 Broken step chain safety device

Devices shall be incorporated as part of each tension carriage which shall disconnect electrical power to the drive mechanism and activate the brake if the step chain breaks or if the tension on either chain drops below (or exceeds) a predetermined value, or if the motion of a chain is interrupted.

9.1.7 Broken drive device



Where the drive mechanism is connected to the main drive shaft by chains, a device shall be provided which will disconnect electrical power to the drive mechanism and shall activate both the operational brake, and the additional brake in the event if the driving chains fail or excess sagging.

9.1.8 Non Reversing Device A device shall be incorporated to detect reversal from the pre-set direction of

motion and activate the operational and auxiliary brakes to stop the escalators.

9.1.9 Handrail Finger Guard Safety Device

Detection device shall be provided at points where the handrails enter the escalator newels. These devices shall disconnect electrical power to the drive mechanism and activate the brake in the event of an object entering the gap between the handrail and newel.

9.1.10 Step and Skirt Safety Devices Detection devices shall be provided in escalator skirting panels in close

proximity to the upper and lower comb plate tips, on the track system at the upper and lower curves and at 7.5 m intervals along the incline of each escalator. Electrical power to the drive mechanism shall be disconnected and the brake(s) applied should any one of these devices be activated due to the skirt panels being forced away from the steps.

9.1.11 Comb plate safety device

Safety devices shall be incorporated at both sides on the comb plates at each landing, which shall disconnect electrical power to the drive mechanism and activate the brake should any object become wedged between the comb and the step. The device shall be able to operate in the horizontal and vertical direction.

9.1.12 Step Lowering Device

Devices shall be provided which will disconnect electrical power to the drive mechanism and activate the brake, should a step be lowered due to excessive load or breakage. The detection shall be effective at the left, centre and right side of the step. The device shall be located near the top and bottom curves for the escalators. These shall be located such that the lowered steps stop in front of the comb in order to prevent further damage.

9.1.13 Inspection Control Inspection control complying with BS EN115 shall be provided at both

landings. 9.1.14 Missing step detection device



Detection devices shall be provided to stop the escalator before the missing step opening appears on the passenger side of the escalator.

9.1.15 Handrail Speed Detection Device Each handrail shall be fitted with a device, which shall stop the escalator

when the handrail speed deviation exceeds the limits prescribed by EN-115. 9.1.16 Broken Handrail Device

Each handrail shall be equipped with a mechanically operated electrical safety device of approved design to detect undue tension, excessive elongation and handrail failure.

9.1.17 Floor plate safety device Safety switches of approved design shall be provided underneath each

hinged floor plate at both the upper and lower landings. The escalator shall stop when the floor plate is opened unless under maintenance / inspection mode.

9.1.18 Step up-thrust device Safety device of approved design shall be provided at the upper and lower

landings to stop the escalator, should a step be lifted or displaced against the “up-thrust” track at the transition curve from incline to horizontal in the passenger carrying side of the track system.

9.1.19 Dress Guard Brush type deflector device shall be provided along the step nose line on the

skirt panel to keep feet and loose clothing clear of the possible trapping point and safety against garments such as Saree, loose clothes, etc. The brush bristles shall be made of fire resistant nylon filaments with split ends to give a soft face.

9.1.20 Brake Lining Safety switch Details of safety device shall be submitted for design review by the purchaser

and same shall be provided at each shoe of the machine brake to monitor the lining thickness and to detect any abnormal or uneven wear of brake lining.

9.1.21 Phase Protection Device A phase protection device shall be provided in the controller to prevent setting

in motion or to stop the escalator in the event of phase failure or phase sequence reversal of the power supply. An illuminated visual indicator shall be provided on the control cubicle/controller to signify the actuation of this device due to phase failure or phase sequence fault. The indicator shall remain illuminated until the fault is rectified.



9.1.22 Earth leakage protective device An earth leakage protective device or residual current device shall be

provided such that any dangerous earth leakage to the escalator metalwork shall cause immediate stopping of the driving machine and disconnection of the power supply/ controller. The return to service shall not be possible, except if it is reset manually by a competent person.

9.1.23 Low Oil Level Detecting Device

A low oil detection device based on the principle of ‘oil level detection’ or ‘oil pressure detection’ shall be provided to prevent the re-starting of the escalator after a predetermine time as recommended by the manufacturers but in no case more than one week when low oil level is detected. Grease shall not be used for chain lubrication. Detailed proposal shall be submitted for review and approval of the purchaser.

9.1.24 Interface with Fire Protection Systems

All escalator supplies will include the provision of smoke detection system in the escalator at appropriate locations e.g. machine room, pit, controller, etc. At stations provided with fire protection systems, if escalator would be utilized for evacuation purposes (in this regard, please refer NFPA130 for more details), then the escalators should be equipped with a sprinkler system, Sprinkler heads (outlets) in the landing pits/ machine rooms and sprinkler pipes along the Truss. The Contractor shall provide sprinkler pipes and heads inside truss for the Escalators and shall co-ordinate with railways and make adequate provision to incorporate all the required fire protection equipment and to get the sprinklers provided in the landing pits and machine rooms connected to the main Fire Sprinkler/ Suppression system. Extension of water supply connection to the Sprinkler pipes of Escalator from the nearest Fire Hydrant/ Sprinkler hydrant will be done by railways, for which necessary interface will be the responsibility of Contractor. Unless the tender document specifically asks for the aforesaid sprinkler system, it will be deemed that the same is not required (see Annex 1 item 7).

9.1.25 Water Flooding Detection Device The lower pit of all escalators shall be provided with detection device, such as

float switch, to stop the escalators if the pit is flooded. Pit depth should be minimum 1500mm.

9.2 Monitoring and Fault Diagnostic System A microprocessor based monitoring and fault diagnostic system to provide

information on the operation, identification and display of all faults that have caused the escalator stop including emergency stops shall be provided. The system shall be able to record at least 100 events in their order of occurrence and display them sequentially in a last in first out sequence.



An alphanumeric display unit indicating the fault code or fault message shall be installed at an easily accessible and protected location on the handrail decking at both the landings. The display of the last fault can only be reset after the fault causing the stop is cleared but the historical record shall remain in the microprocessor. Faults that do not require the attendance of the maintenance staff shall be easily identified to enable the operator to re-set and re-start the escalator. The system shall capture, display and retain the following information:-

a) Record number b) Fault/ status code/ alphanumeric display c) Date d) Time at which fault started e) Time at which fault cleared f) Direction of operation with starting time g) Total operation hours with break down for “UP” and “DOWN”

operations.

9.3 Following is a summarized list of critical safety features. All of these will be supplied and installed by the contractor.

SN Safety devices/ features required

Description

1. Emergency stop device In an emergency, it stops escalator immediately, if pressed

2. Comb plate safety device It stops escalator, if objects are caught between comb plate and step treads

3. Handrail entry safety device

It stops escalator, if human-finger or any Foreign-object is pulled into the hand-Rail entry/Inlet

4. Phase monitoring device It stops escalator, if there is a missing phase or a wrong phase sequence.

5. Over-speed detector It stops escalator, if the movement is above the normal speed

6. Non-reversal safety device It stops escalator, if the direction of movement is suddenly reversed

7. Main driving chain safety device

It stops escalator, if the main driving chain loosens excessively or breaks

8. Step chain safety device It stops escalator, if the step chain breaks or becomes excessively loose

9. Step sag protection device It stops escalator, if the Steps start sagging after getting fractured or otherwise

10. Static electricity prevention device

Eliminates static electricity created by running of the escalator steps and/or handrails




Description

11. Skirting panel safety device

It stops escalator, if objects are caught between any step and skirting Panel

12. Skirting panel safety brush (special heavy duty)

It prevents stray objects, clothes such as saree and chunni, etc. being caught between Step and Skirting Panel

13. Step’s three-sides yellow demarcation

It demarcates the two horizontal-ends and one inner end of the steps and the safe foot-hold area for passengers

14. Step gap green illumination

The green light illuminates the riding edge of the steps from below, ensuring safe ride of passengers

15. Comb plate light The lights at skirting level on both sides of the comb plate ensure safe ride of passengers

16. Handrail broken safety device

It stops escalator, if handrail stops or breaks

17. Handrail speed detection device

It stops escalator, if handrail movement is above/ below the normal speed

18. Auxiliary brake It stops escalator, if the Driving Chain breaks and/ or escalator over-speeds

19. Motor overload & overheat Protection

It stops escalator, when the motor current /temperature is exceeded abnormally

20. Brake monitoring device It stops escalator, before a brake-fail situation can occur (due to excess brake lining wear)

21. Step missing device It stops escalator, if the Step is missing

22. “START” Buzzer device It alerts the passengers when escalator starts working/ moving

23. “WRONG-ENTRY” alarm device

It alerts the passengers, if they approach to enter the escalator from a Wrong entry-point/ opposite- direction to its movement-direction, by sounding the warning-buzzer and beginning the escalator movement in its pre-set, correct direction.

24. “AUTO-START” on passenger-approach device

It ensures the stopped-escalator to start operating/ moving after detecting the approaching passengers by a 3-D scan.

25. Oil-water separator & drainage system

It ensures separate collection & disposal of the loose/ falling oil/ grease and accumulated water and thus preventing a potential hazard.

26 Grounding of escalator (limited to making earth connections to escalator)

As per IS 3043:1987




Description

27 Smoke Detector It stops escalator, if smoke generates under pit, machine room and controller.

28 Sprinkler System An optional item (see Cl. 9.1.24)

29 Low Oil Level Detecting Device

See Cl. 9.1.23

30 Float switch It stops the escalator if the lower pit is flooded

Note: Each bidder must submit their compliance or deviations in a “Compliance Statement”, as well as, the specific details related to their escalator-design, against each safety device/ feature mentioned above.

10.0 GENERAL REQUIREMENT

10.1 The complete escalator system shall be reliable and conform to the latest version of the International/ EN-115 and National/ IS-4591 standards.

10.2 All materials used in manufacturing the escalator, shall be fire-retardant and not easy to ignite.

10.3 All power devices and electro-mechanical units including the drive unit, controller, and converter etc. to be used in the escalator shall be suitable for a heavy-duty application of a Public Service escalator as per above Standards.

10.4 All mechanically moving parts of the escalator shall be completely enclosed within imperforate panels or walls, except the accessible Step treads, part of handrail and permitted apertures for ventilation.

10.5 In case of escalator installation location being directly exposed to the weather/ extreme atmosphere, a proper roof-covering and enclosure must be provided by Indian Railways, as per the provisions of the standard EN-115 clause 5.2 meant for this purpose.

10.6 The balustrades shall not have any parts that would tempt/ allow any person

to stand on the same. The balustrades interior panels shall be smooth and shall not have any protruding part or sharp edged covering strips etc.

10.7 The balustrades design and construction shall provide for adequate mechanical

strength and rigidity, such that the vertical force distributed over the Handrail surface/ length shall not be able to cause any permanent deformation, breakage or displacement of any balustrade part(s) as per the provisions of the standard EN-115 clause 5.5 meant for this purpose.

10.8 At the landings of the escalator, a sufficient unobstructed area shall be

available to accommodate the passengers as per the provisions of the standard EN-115 clause A2.5 meant for this purpose. Similarly a clear height of minimum 2.30m or more shall be available above the Steps of the escalator



at all points, as per the provisions of the standard EN-115 clause A2.1 meant for this purpose.

10.9 All of the escalator’s equipment, structures and other metallic parts shall be

effectively grounded by the contractor to the incoming earthing conductor to be provided by railways. The earthing arrangements will be as per the standard practice conforming to IS: 3043.

11.0 ELECTROMAGNETIC COMPATIBILITY REQUIREMENTS (EMC)

The contractor shall ensure that the critical equipment supplied, i.e. VVVF converter shall cause minimum radio frequency Interference into main network and comply with the electromagnetic compatibility (EMC) requirements of the EN-115 Standards. The Contractor should furnish any independent/ reputed/ national test agency/ lab’s certification in this regard.

12.0 TESTING & INSPECTION Testing & inspection plan stages and details are as given in the table in

Annexure-2. 12.1 Escalator Type Testing

12.1.1 The Contractor shall submit a comprehensive type testing protocol that

includes the requirements laid down in EN–115, IS–4591 and Annexure-3 of this spec., to RDSO for approval.

12.1.2 Further, the contractor shall submit the available type test reports in respect

of tests listed in the protocol; these reports should pertain to the systems and sub-systems that are to actually form a part of escalators to be supplied to IR. The contractor should also submit an action plan for carrying out the remaining type-tests.

12.1.3 If the product is being manufactured initially in a foreign country, RDSO

representative at its discretion, may like to visit and witness any of the Type Tests, at their own cost. The Contractor shall co-ordinate the program, in such case.

12.2 Escalator Routine Testing 12.2.1 At first, the Contractor shall submit a comprehensive routine testing protocol

that includes the tests in the nature of routine tests as are mentioned in EN–115, IS–4591, Annexure-3 of this spec. and any other relevant tests, to RDSO,for approval.

12.2.2 Routine testing entails tests and inspections that are conducted at the works of escalator manufacturer and/or the works of its key sub-suppliers, as per the relevant standards.

12.2.3 The purchaser’s representative/ inspection agency/ testing authority would have the right at its discretion, to witness routine Test(s) of the complete escalator/ its Key Sub-assemblies, during the escalator’s manufacturing



and/or accept the test results/ reports of their respective manufacturer’s/ supplier’s in-house quality control (reports should be furnished for systems and sub-systems that are to actually form a part of escalators to be supplied to IR), as sufficient evidence of the execution of these routine tests.

12.2.4 At least 3 weeks notice shall be given to the purchaser’s representative/ inspection agency/ testing authority to be present for the routine testing and inspection.

12.2.5 If the Product is being manufactured initially in a foreign country, purchaser’s representative/ inspection agency/ testing authority at its discretion, may like to visit and witness any of the routine tests, at their own cost. The Contractor shall co-ordinate the program, in such case.

12.3 Escalator Pre-Dispatch Verification of Packing List 12.3.1 Before the ordered goods (complete escalator system kits), as per the offered

dispatch lot are dispatched, purchaser’s representative/ inspection agency shall verify completeness of the dispatch lot as per order details/ contractor’s packing list and if everything is in order, issue the “Dispatch approval certificate”.

12.3.2 Thereafter, the Contractor can dispatch the goods to the consignee. 13.0 ESCALATOR INSTALLATION AND FINAL ACCEPTANCE INSPECTION/

TESTING After installation, the escalator shall be tested by the Contractor in the presence of the purchaser’s representative/ inspection agency/ testing authority. The important tests to be conducted are listed in Annexure-3 of this spec. for guidance. The test protocol will be submitted to RDSO for approval. After satisfactory completion of inspection/ testing, the purchaser’s representative/ inspection agency/ testing authority will authorize the commissioning of the escalators for public use by issuing the “Escalator installation final acceptance certificate”.

14.0 WITHDRAWAL OF APPROVAL Approval granted to the Contractor is liable to be withdrawn in the event of noticing any major change at a later date in the design or major change from the Bill of material as approved earlier without seeking the Prototype approving authority i.e. Production Units’/ RDSO's approval or using any major Sub-assembly of inferior specification/ quality, thus compromising with the reliability.

15.0 LIGHTING 15.1 The escalator and its surrounding area shall be sufficiently and adequately

illuminated by Railways, especially in the vicinity of the comb to ensure safe and comfortable ride of passengers. Light intensity on tread surface shall be minimum 50 lux or more as per IS 4591.



15.2 Machine room, pit and controller enclosure shall be provided with suitably protected permanent light fixtures, electrical outlets, mechanical or natural ventilation and suitable access.

15.3 The electric lighting installation and the socket outlets shall be independent of

the power supply to the machine being fed by a separate cable from the main switch as per the provisions of the standard EN-115 clause 5.8.3 meant for this purpose.

15.4 The contractor shall provide Comb lighting, step gap lighting and traffic

direction lighting. The step gap lighting shall be of green color. The step gap lighting shall be provided so that the passengers can adjust their feet on the step and it shall be provided under the steps near the comb plate at each landing. All the lightings shall be water and dust proof. Comb lighting shall be supplied through a UPS with battery back-up. The UPS and battery will be supplied by the contractor and the system will be sized for 30 minutes backup for the lighting.

16.0 ACCESSIBILITY 16.1 The escalator design shall allow easy and safe accessibility on both sides, to

authorized persons for Inspection, maintenance and repairs. 16.2 Driving and return stations, machinery spaces inside the truss and also separate

machinery spaces, shall not be accessible to unauthorized persons. Hence, lockable Inspection and trap doors shall be provided.

17.0 MOVEMENT OF MATERIAL Completely assembled escalator or its sub-assemblies (which cannot be

handled by hand), shall be:- a. Equipped with fittings for being lifted/ moved by a lifting device, or b. Designed in a way, to allow the attachment of above type fittings, e.g.,

threaded holes, or c. Designed/ shaped in a way, to allow easy attachment to the lifting device

or transportation means. 18.0 INSTALLATION & COMMISSIONING 18.1 All works at the installation site shall be carried out in accordance with the

standard acceptable methods and practices of installation of escalators and electrical equipment.

18.2 All equipment, sub-assemblies, structures, truss, etc. shall be installed as per their

respective sub-contractor’s installation instructions.



18.3 Special care shall be taken of leveling/ plumbing, which shall be done meticulously before any equipment, sub-assembly or structure is fixed finally in position.

18.4 Adequate care shall also be taken during installation of the complete

Escalator to avoid damage to any equipment, sub-assembly or building structure.

18.5 Indian railways will be responsible for major civil work needed for installation

and commissioning of escalator at designated platform. The Contractor will provide a terminal board near escalator and Railways will provide electrical wiring and earthing upto this terminal board. Railways will provide site assembly area with proper power connection as per the extant rules. For more details on railways’ scope of work, please see Cl. 1.8.

19.0 LABELING AND MARKING 19.1 All equipment and apparatus, inside or outside the switchboard, including

instruments, meters and relays shall be labeled or marked adequately. 19.2 In addition, warning labels shall be fitted at all points, where the removal of

covers/ panels may expose live equipment, operating above 50V between circuits or to earth and shall bear the inscription ‘Danger- Live Parts’ in red color that is clearly visible from a viewable distance.

20.0 PACKING, SHIPPING AND DELIVERY

20.1 All equipment shall be properly inspected before the Shipment. An inspection tag bearing the word “INSPECTED” or “PASSED” giving details of the inspection date, etc. shall be attached to the Packaged Consignment. All four sides of the packaged consignment shall contain details of the Consignee & Consignor.

20.2 Appropriate caution notices such as “Fragile” or “Handle with care” etc shall

be displayed on the outside surface of the boxes, crates and packages. 20.3 The Contractor shall be responsible for the safe transportation and delivery of

materials to the location, as specified by the purchaser. 21.0 ON-SITE SUPPORT TO CONTRACTOR

21.1 The purchaser/ user railways would extend facilities on free-of-charge basis,

to the Contractor for storing the product, installation, testing and commissioning equipment/ tools/ accessories, etc., at a suitable location, as close as possible to the installation site.

21.2 This shall include providing a separate lockable/ secure material-storage cum

Site office with telephone, electrical supply/ light and fan fittings, etc.. 22.0 WARRANTY



22.1 The Contractor shall be responsible for any damage to equipment provided in the escalator, due to defective design, materials, workmanship for a period of 24 months from the date of commissioning of escalator and 30 months from the date of supply, whichever is earlier. The Contractor shall attend to the complaint (including replacement of defective components, if required) within 12 hours from the time of receipt of complaint at his own cost.

22.2 The period of warrantee will be extendable in case of recurring problems of

defective design, material or manufacturing. The Contractor shall warrant that everything to be furnished hereunder shall be free from all defects and faults in material, workmanship and manufacture and shall be of the highest grade and consistent with established and accepted standards of material of the type ordered and in full conformity with specifications and drawings. The Contractor’s liability in this respect of any complaints, defects and /or claim shall be limited to furnishing and installation of replacement parts, free of any charge. The warranty clause in commercial agreement, if any, shall prevail.

22.3 The Contractor shall be responsible for carrying out all the modifications at his

cost on any part of the equipment during the period of warranty required for satisfactory operation of the equipment as per technical specification. For any technical decision the final authority from the purchaser’s side is RDSO.

22.4 All the replacements and repairs, that the purchaser shall call upon the

Contractor to deliver or perform under this warranty, shall be delivered and performed by the Contractor promptly and satisfactory.

22.5 The warranty period would cover comprehensive maintenance inclusive of all

spares, material and labour cost. 22.6 During warranty period, in case the escalators become non-functional due to

any manufacturing defect, then the escalator would be considered under breakdown and the Contractor would be required to rectify the defects.

22.7 The consignee shall ensure that the records of breakdown are maintained on a

shift basis. 22.8 The Contractor shall ensure that in case a failure is reported by a consignee,

qualified Service Engineers shall visit the site within 12 hours from the time of complaint. This period of 12 hours after the failure report shall be treated as grace period, which will not count towards breakdown time. Complaints shall be lodged by consignee by fax, phone, e-mail or per bearer at address given by the Contractor.

23.0 AFTER SALES SERVICE 23.1 The bidder shall indicate in the offer, the facilities available with the bidder or

local agent for providing the required after sale service during warranty and post warranty periods. The bidder will also mention service organizations located in India and the availability of trained staff and maintenance spares etc.



23.2 The Contractor shall provide and ensure servicing facilities throughout the

warranty period of the system. After the warranty period is over, the Contractor should give service support for trouble shooting and for obtaining spare parts for AMC period.

23.3 The Contractor shall ensure that, in case a consignee reports a failure,

qualified service engineers visit the site within 12 hours from the time of complaint. Consignee shall lodge complaints by fax, e-mail or per bearer at address given by the Contractor. The responsibility to keep the current failure reporting address details will rest with the consignee.

24.0 MAINTENANCE

24.1 The Contractor shall provide free-of-charge, maintenance service (and all the

works specified) including required spares, for the specified warranty period. 24.2 During the guarantee period, the above maintenance service shall include all

preventive, scheduled and corrective maintenance and additionally, all service-request calls made by the purchaser/ user railways.

24.3 For this, the Contractor would be required to provide a comprehensive

maintenance and service plan, for review and acceptance by the purchaser or his authorized representative.

24.4 The maintenance work-system shall ensure safety of the personnel and

equipment. 24.5 In the event of any failure, requiring design modifications, etc. in the escalator,

the Contractor shall undertake to submit its details for a review by the Purchaser or its authorized representative. On reaching consensus and post-modification, the Contractor shall undertake fresh testing and re-commissioning, if required.

24.6 It shall be possible to change the Steps without dismantling the Internal

Panels or the Skirt of the escalator, to ensure minimum down time during maintenance and repairs of the escalator.

24.7 Annual Maintenance Contract (AMC) 24.7.1 The bidder are required to quote separately for a comprehensive annual

maintenance contract (AMC) for the escalator supplied against the specification, which will be inclusive of all spares, material and labour costs along with work schedule if required to do so as per special condition of the tender documents.

24.7.2 The contractor shall be responsible to keep all the escalators along with all

connected ancillary equipments/apparatus/ machines, as have been stated under the scope of work and specification, in perfect working condition, on any day during the tenure of the contract (excepting the period of



programmed shut down). In case, any escalator is out of order, for failure/ breakdown of the escalator or of any other related/ancillary equipments/apparatus/machines, the escalator shall be attended immediately, within a period of 12 hours of being informed.

24.7.3 The consignees must communicate their option to enter into AMC at least 30

days prior to expiry of warranty. The AMC agreement must be signed within six months prior from the date of expiry of warranty.

25.0 TRAINING PROGRAM

The Contractor shall fit in all training instructions/ demonstrations for correct operation and maintenance of the escalator into a three working days self contained training program. The contractor shall organize one training programme per 20 nos. escalators ordered. For orders less than 20 nos. escalators, at least one training programme will be organized. For orders that are not integer multiples of 20 nos., rounding off will apply (e.g. for 50 nos. escalators, 3 nos. training programmes will be organized). The training programme(s) will be held at contractors’ head office or at any other location as agreed between railway administration and the contractor.

25.1 Operators Training

The Contractor shall provide the necessary Operators Training to the Purchaser’s authorized/ designated Staff as per the formal Training Program designed for this purpose. This shall enable them to carry out the normal/ rescue operations under normal/ emergency situations respectively as well as minor repairs by themselves.

25.2 Maintenance Training

The Contractor shall provide the necessary maintenance training to the purchaser’s authorized/ designated Staff as per the formal Training program designed for this purpose. This shall enable them to perform minor and non-specialized maintenance of the escalators.

26.0 OPERATION AND MAINTENANCE MANUALS

26.1 The Contractor shall provide operations and maintenance manuals, for the

use by the supervisory, operating and technical staffs of the purchaser. 26.2 Each manual shall be divided into indexed sections explaining the subject

matter in logical steps. 26.3 The operations manual shall contain the principle and operations’ details of

the complete escalator under the normal and emergency conditions. 26.4 Details of the common faults that might occur in the complete escalator &/or

any of its key components/ sub-assemblies and their rectification shall also be included.



26.5 The maintenance manual shall contain the maintenance and servicing

instructions for the complete escalators along with explanatory notes and drawings as necessary.

26.6 The periodic maintenance schedule recommended by the Contractor for the

satisfactory performance of the escalators shall also be included. 26.7 Escalator being a critical public safety item, a draft of operations and

maintenance manual should be submitted to the purchaser for approval with regard to its completeness and comprehensiveness. The final version of operations and maintenance manual should be issued on the basis of purchaser’s comments.

26.8 It is recommended that the operation and maintenance manuals be shipped

along with the escalator shipment. In any case, Operation and Maintenance manuals are to be supplied to railways well before final testing/ commissioning of escalators.

27.0 QUALITY ASSURANCE

27.1 The Bidder shall prepare and furnish their QA plan documentation, as per

their ISO: 9000 program being followed. It shall include and clearly mention the procedures ensuring that all equipment/ materials/ systems & sub-systems are properly specified, designed, purchased, recorded, inspected, installed and tested at appropriate stages.

27.2 It shall also provide the confirmation that the handling, storage & delivery

arrangements have been satisfactory.

**********



ANNEXURE-1 For each Escalator, this Performa shall be filled in Name of the Railway Station: …………………………………

S. No. Description Parameter Remarks

1. Escalator required at Entry/ Exit of Station Yes/No If Yes; One Side/ Both Sides

2. Escalator required at Platform(s) Yes/No

3. Height of foot over Bridge (At passenger walking-level, from base)

In meters -

4. Horizontal spaces available for escalators installation

-

5. Location of step chain roller (inside/ outside the step chain – see cl. 2.8.4)

-

6. Handrail guidance at newels (guide rollers/ newel wheel – see cl. 2.6.3)

-

7. Is sprinkler system required (see cl. 9.1.24)?

Yes/No -

8. Will the escalator be installed at an underground station (see cl. 2.14.2)?

Yes/No -

Note: 1. In respect of Sr No. 5, the normal requirement will be step roller inside 2. In respect of Sr No. 6, the normal requirement will be guide rollers 3. In respect of Sr No. 7, the normal requirement is that no sprinkler system will be provided 4. In respect of Sr No. 8, the normal situation will be overground station

of 48 Effective from July 2012 Specification no. RDSO/PE/SPEC/TL/0095-2012 (Rev ‘1’) Date of Draft: 10.09.2012

ANNEXURE-2 Detailed Testing & Inspection Plan

Type of Inspection/ Testing

Where Frequency When On What Who Conducts Final Action

Type Testing - Relevant manufacturer/ supplier’s works

- Third party

Once in every 5 years

Latest before Commissioning of the first Escalator

Complete escalator & its Key Sub-assemblies.

Internationally accredited testing Agency/ Lab (approached by relevant contractor).

RDSO may accept certified copies of above Type Test certificates, in-lieu of actual Tests.

RDSO representative may choose to be present himself to witness any test, at its own discretion.

RDSO issues “Escalator type testing approval certificate”.

Routine testing Relevant manufacturer/ supplier’s works

Each order/ each escalator

During manufacturing Complete escalator/ its Key Sub-assemblies.

- Relevant contractor, by their In-house QC.

- However, testing authority may accept certified copies of the above Test Results/ Reports, as sufficient evidence of the execution of the Routine Tests &/or choose to be present himself to witness any test, at its own discretion.

Testing authority issues “Escalator routine testing approval certificate”.

Pre-dispatch verification of packing list

Escalator Contractors’ works

Offered dispatch Lot

Before dispatch of the complete escalator to installation Site

Complete escalator Kit.

Purchaser’s representative/ testing agency.

Testing agency issues “Dispatch approval certificate”.

of 48 Effective from July 2012 Specification no. RDSO/PE/SPEC/TL/0095-2012 (Rev ‘1’) Date of Draft: 10.09.2012

Type of Inspection/ Testing

Where Frequency When On What Who Conducts Final Action

Final acceptance inspection/ testing

At the installation site

Each order/ each escalator

After installation & commissioning of the complete escalator & after all the above mentioned Tests are satisfactorily completed

Complete escalator.

Contractor in presence of purchaser’s representative/ testing authority.

Purchaser/ Testing authority issues “Escalator final acceptance certificate”.

of 48 Effective from July 2012 Specification no. RDSO/PE/SPEC/TL/0095Date of Draft: 10.09.2012

Annexure-3 A- Type Test details All tests, measurements, calculations and inspections mentioned in Table 7 of

EN 115 will be essential. The purchaser shall generally witness the following set of type tests for the purpose of safety verification (the list of tests can be enlarged, if required).

S. No.

Key Sub-Assy./ Part of Escalator

Frequency Scope of Test

1. Driving motor 1 unit -- Insulation test -- Dynamic test -- Total harmonic distortion test

2. Steps 1 unit -- Static test -- Dynamic test -- Torsional test -- Dimensional check

3. Step Chain 1 unit -- Dimensional check -- Tensile breaking strength (Destructive

test)

4. Wheels (a) Chain wheel (b) Trailer wheel

1 unit -- Dimensional check -- Location of chain roller

5. Controller 1 unit -- Physical construction check -- Electrical tests, such as: - Functional test - Protection circuit verification - Temperature rise test

6. Drive chain 1 unit -- Breaking strength (Destructive test) -- Dimensional check

7. Handrail 1 unit -- Physical checking -- Breaking strength of the handrail and

factory prepared Joints -- Dimensional check of handrail drive

chain -- Ozone ageing test

8. Braking system 1 unit -- Full functionality test & Braking distance

-- Dimensional check -- Demonstration of brake adjustment

and settings


S. No.



9. Truss 1 unit -- Dimensional check -- FEM analysis for truss fitness for upto

5m w/o intermediate support -- Truss Deflection to be recorded under

full-load condition.

10. Track 1 unit -- Joint of guide track. -- Thickness of zinc profile.

11 Skirt

1 unit -- Skirt yield test -- dimensional check of skirt panel

12 Balustrade

1 unit -- Deformation test of balustrade -- Thickness of steel panel -- Dimensional check of balustrade

panel

13 Test on fully assembled escalator

1 unit - All tests as per EN-115 - Noise level of the complete

escalator (65dBA)


Annexure-3; contd… B- Routine Test details

Following is an indicative list of some of the tests that shall be included in the routine test protocol. The final comprehensive list will be supplied by RDSO after consultation with the manufacturer.

S. No.



1. Driving mechanism Random -- Dimensional check -- Backlash in both directions

2. Driving motor Random -- Insulation resistance of winding -- High voltage test (2kV for 1 min.) on the

stator winding.

3. Main drive shaft 100% -- Dimensional check

Random -- Radiographic testing or other Non-destructive test of weld joints

4. Steps 100% -- Dimensional & aesthetics checks

5. Step chain 100% -- Overall dimensional check of assembled chain

Random -- Dimensional checks of link plate, chain pin and step axles.

6. Wheels (a) Chain wheel (b) Trailer wheel

100% -- Visual & dimensional checks of wheels & bearings.

7. Controller 100% -- Checking/ testing for correct wiring & functioning.

8. Tension carriage Random -- Visual & dimensional checks

9. Drive chain Random -- Visual & dimensional checks

10. Handrail, handrail drive etc. Random -- Visual & dimensional checks

11. Comb plate Random -- Dimensional & aesthetics checks

12. Floor plates Random -- Dimensional & aesthetics checks

13. Braking system 100% -- Dimensional check -- Check Brake setting & adjustment.

14. Truss 100% -- Visual & dimensional checks.

100% -- Ultrasonic examination of welds.


S. No.



15. Test on fully assembled escalator

1 unit - All tests as per EN-115 - Noise level of the complete escalator

(65dBA)

C- Final Acceptance Inspection/ Test details

S. No.

Escalator’s Parameter/ Feature To Be Inspected/ Tested

Scope of Test

1. Inspection of escalator’s general arrangement & specifications

a. Vertical rise

b. Horizontal span length

c. Angle of Inclination

d. Step width

e. No. of Horizontal steps at upper & lower landings

f. Balustrade height

g. Correct size of truss members

h. Truss surface treatment

i. Rated speed

2. Inspection/ testing of escalator’s operation

a. Key operated start function

b. Traffic direction Light

c. Direction of Movement

d. “AUTO-START” on passenger-approach

e. Crawling speed/ auto-stoppage in the absence of passengers

f. Automatic lubrication system

3. Inspection/ testing of Electrical items

a. Correctness of motor rating

b. Verification of actual installation vis-à-vis the power system diagram provided by the contractor

c. Contactors, relay contactors and safety switches are of approved make/ complying to EN 115.

d. Cross-sectional area of the conductors of safety circuits complying to EN 115.


S. No.


Scope of Test

e. Insulation resistance between conductors and between conductors and earth

4. Testing of escalator’s safety devices

a. Emergency stop device

b. Comb plate safety device

c. Handrail entry safety device

d. Phase monitoring device

e. Over-speed detector

f. Non-reversal safety device

g. Main driving chain safety device

h. Step chain safety device

i. Step sag protection device

j. Static electricity prevention device

k. Skirting panel safety device

l. Skirting panel safety brush

m. Step’s three-sides yellow demarcation

n. Step gap green illumination

o. Comb plate light

p. Handrail broken safety device

q. Handrail Speed detection device

r. Auxiliary brake

s. Motor overload & overheat protection

t. Brake monitoring device

u. Step missing device

v. “START” buzzer device

w. Step anti-jumping device

x. “WRONG-ENTRY” alarm device

y. Oil-water separator & drainage system

5. Final testing of escalator’s critical parameters

a. Load test

b. Braking distance test

c. Sound-level test.

d. 12 hours continuous-run, in both directions

6. Final visual inspection of a. Check satisfactory workmanship


S. No.


Scope of Test

installed escalator b. Check paintings & surface treatments

c. Check labeling & marking

d. Check neatness of laid-out wiring

7 Provision of safety signs a. Visual checking of signs

Note: EN 115 prescribes several tests and measurement and visual inspection in respect of an assembled escalator. These shall automatically form a part of the final acceptance test protocol.


DEFINITIONS The following words and phrases used in this specification shall bear the meanings given below:- Part I – Technical Terms a) Angle of Inclination - The angle at which a passenger travels with respect to

the horizontal. b) Anti slide device – A device to be installed on the decking between the

handrails of the adjacent escalators, or on the decking between the handrail and the adjacent wall, to prevent people or objects from sliding down on the decking.

c) Balustrade - The enclosure at each side of the moving steps, consisting of

decking, inner and outer panels and skirts. d) Ceiling intersection guard – A guard provided at the intersection of

escalator decking and ceiling or soffit. e) Comb – The pronged portion of the comb plate at the landing which meshes

with the step tread grooves. f) Comb plate – The plate supporting the combs at the landings. g) Control equipment – the components by means of which motion, direction of

travel, speed and stopping are controlled. h) Deck, decking and decking extension – The position of the balustrade

outside the moving handrail that is transversely horizontal. This shall include anti slide devices where applicable.

i) Driving Machinery – The motorized power unit for driving the escalator. j) Electro-mechanical Brake – A brake consisting of friction shoe(s) applied to

a brake drum or disc by means of springs that are electrically released. k) Handrail – A power driven moving rail for passengers to grip whilst using the

escalator. l) Handrail Guard – A guard for the moving handrail at the point where the

handrail enters or leaves the balustrade. m) Landing – The stationary areas at the entrance to or exit from an escalator. n) Landing Plate / Floor Plate – The portion of floor plate next to the comb

plate at the landing.


o) Newel – The portion of the balustrade on the landing at the end where the moving handrail changes direction.

p) Number of Horizontal/ Flat steps– Horizontal/ Flat steps shall be measured

from the point at which the first step emerges from under the comb plate in a horizontal direction to the first exposure of the riser of an adjacent step, both at the upper and lower landings.

q) Panel – The portion of the balustrade immediately adjacent to the moving

stairway, occupying the vertical space between the steps and the deck or inner panel.

r) Skirt – The portion of the balustrade immediately adjacent to the moving

stairway, occupying the vertical space between the steps and the deck or inner panel.

s) Step – The unit which forms the moving stairway. t) Step chain – The main chain to which the steps are attached. u) Step roller track – The track on which the step roller runs. v) Step Tread – The horizontal portion of the step grooved in the direction of

travel and on which the passengers are carried. w) Step roller – The rollers attached to the step and supporting the step. x) Truss – The supporting structure on which the various components are

mounted. y) Working point – The intersection of the escalator step nose line and the

projection of the escalator floor plate level. z) Constant length – The horizontal distance between the escalator working

point and the end of escalator support. Part II – Other Terms a) Purchaser – The President of the Republic of India or the administrative

officers of the railway on his behalf. b) Bidder – The person/firm who submits duly filled in tender documents as an

offer to carry out the work specified in tender document. The bidder can be manufacturer(singleentity)/ consortium/joint venture (one of the consortium/joint venture member could be an Indian firm or the Indian subsidiary of manufacturer for the purpose of thistender).

c) Contractor – The bidder whose tender has been accepted by the railway

shall be termed as the contractor.


d) Sub-Contractor – A person/ firm who has entered into a contract with the contractor for supplying materials and/or services.

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