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SAU Phase 1

At Colchester Hospital

for ESNEFT

NF/KB/5598.03/E

February 2020

Issue P01

Johns Slater and Haward Chartered Building Services Consultants Ardennais House 6 Sorrel Horse Mews Grimwade Street Ipswich, Suffolk. IP4 1LN Tel: (01473) 255965 Email: [email protected]

mailto:[email protected]

Johns Slater and Haward SAU Phase 1 February 2020 NF/KB/5598.03/E

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DOCUMENT CONTROL SHEET

Issue Project Status Author Date Checked By Date

P01 Tender K Barber February 2020 N Fordham February 2020


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GENERAL INDEX

ELECTRICAL SERVICES

SECTION 1 : General Conditions

SECTION 2 : Materials and Workmanship: Electrical

SECTION 3 : Particular Specification: Electrical

SECTION 4 : Summary of Tender: Electrical

APPENDICES:

Appendix 1 : Schedule of Drawings

Appendix 2 : Schedule of Builders Work

Appendix 3 : Test Certificates and/or Commissioning required on Completion

Appendix 4 : Schedule of Luminaires

Appendix 5 : Schedule of Mounting Heights

Appendix 6 : Schedule of Manufacturers / Specialists

Appendix 7 : Designers Risk Assessment


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SECTION 1 - GENERAL CONDITIONS

1.01.00 DEFINITIONS

1.02.00 VARIATIONS TO THE WORKS

1.03.00 QUOTATIONS FOR VARIATIONS

1.04.00 SCHEDULE OF RATES

1.05.00 ALTERNATIVES

1.06.00 CONTRACTOR TO INFORM HIMSELF FULLY

1.07.00 OMISSIONS

1.08.00 REGULATIONS, ETC

1.09.00 COMPLIANCE WITH BRITISH STANDARDS

1.10.00 GOVERNMENT LEGISLATION

1.11.00 LOCAL AUTHORITY TESTS/APPROVALS

1.12.00 MEASUREMENT OF THE WORKS

1.13.00 SUB-LETTING

1.14.00 DRAWINGS

1.14.01 General 1.14.02 Record Drawings

1.15.00 LABOUR

1.16.00 MATERIALS

1.17.00 CONTRACTORS PLANT

1.18.00 INTERFERENCE SUPPRESSION OF CONTRACTOR'S EQUIPMENT

1.19.00 SUPPLY OF SERVICES FOR CONSTRUCTION

1.19.01 Electrical 1.19.02 Water 1.19.03 Gas 1.19.04 Supplies for use of the Permanent Installations

1.20.00 PROGRAMME/PROGRESS SCHEDULES

1.21.00 SITE MEETINGS

1.22.00 SETTING-OUT

1.23.00 EASE OF MAINTENANCE

1.24.00 SAMPLES FOR CONTRACT ADMINISTRATORS APPROVAL

1.25.00 DIMENSIONS


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1.26.00 MARKING-OUT FOR BUILDERS WORK

1.27.00 INTERRUPTION OF SERVICES

1.28.00 EXTERNAL CONNECTIONS

1.29.00 INSTALLATION OF ACCESSORIES

1.30.00 CO-ORDINATIONS WITH OTHER TRADES

1.31.00 SPECIALIST TRADE ATTENDANCE OF EQUIPMENT

1.32.00 FIRE PRECAUTIONS

1.33.00 CLEARANCE OF SITE

1.34.00 NOTICE PRIOR TO COVER

1.35.00 INSPECTION/TESTS DURING PROGRESS

1.36.00 TESTING AND COMMISSIONING

1.36.01 General 1.36.02 Allowance in Tender for Testing/Commissioning 1.36.03 Commissioning Programme 1.36.04 Examination and Tests during Manufacture and Installation 1.36.05 Pre-acceptance and Setting to Work 1.36.06 Witnessing of Tests 1.36.07 Instructions to Staff

1.37.00 LABELS

1.38.00 PAINTING

1.39.00 OPERATION & MAINTENANCE MANUALS

1.40.00 DEFECTS LIABILITY PERIOD

1.41.00 CDM REGULATIONS

1.42.00 COPYRIGHT


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SECTION 2: MATERIALS AND WORKMANSHIP: ELECTRICAL

2.01.00 GENERAL

2.01.01 Regulations 2.01.02 Segregation of Services 2.01.03 Works Tests 2.01.04 Supports 2.01.05 Polychlorinated Biphenyls 2.01.06 Asbestos

2.02.00 SWITCHGEAR

2.02.01 General 2.02.02 L.V. Switchboards and Panels 2.02.03 Distribution Boards 2.02.04 Switches and Disconnectors 2.02.05 Protective Devices

2.03.00 CABLE & CABLE INSTALLATION

2.03.01 General 2.03.02 Armoured Cables 2.03.03 Cables in Conduit or Trunking 2.03.04 PVC Insulated and Sheathed System 2.03.05 Flexible Cords

2.04.00 CABLE DISTRIBUTION SYSTEM

2.04.01 General 2.04.02 Steel Conduits 2.04.03 Rigid PVC Conduit Systems 2.04.04 Flexible Conduit 2.04.05 Cable Trays 2.04.06 Steel Cable Trunking 2.04.07 Rigid Plastic Cable Trunking

2.05.00 EARTHING AND BONDING

2.05.01 General 2.05.02 Materials 2.05.03 Systems 2.05.04 External Earthing

2.06.00 ACCESSORIES

2.06.01 General 2.06.02 Boxes 2.06.03 Lighting Switches 2.06.04 Socket Outlets 2.06.05 Special Purpose Socket Outlets 2.06.06 Connection Units 2.06.07 Isolating Switches 2.06.08 Communications

2.07.00 LIGHTING

2.08.00 EMERGENCY LIGHTING


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2.08.01 General 2.08.02 Types of Systems

2.09.00 FIRE DETECTION AND ALARM

2.09.01 General 2.09.02 Method of Wiring Fire Detection and Alarm Systems 2.09.03 Power Supplies 2.09.04 Control Panels 2.09.05 Break Glass Units 2.09.06 Sounders 2.09.07 Sensors

2.10.00 MECHANICAL SERVICES WIRING & EQUIPMENT

2.10.01 General 2.10.02 Boiler/Plant Rooms 2.10.03 Motors

2.11.00 AUXILIARY SYSTEMS

2.11.01 Telephone Installation

2.12.00 TESTING AND INSPECTION

2.13.00 LIGHTNING PROTECTION SYSTEM

2.13.01 General 2.13.02 Conductor Tapes 2.13.03 Joints 2.13.04 Fixings 2.13.05 Air Terminations 2.13.06 Down Conductors 2.13.07 Earth Termination Network 2.13.08 Bonding of Extraneous Metalwork 2.13.09 Testing of Installation


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SECTION 3: PARTICULAR SPECIFICATION: ELECTRICAL

3.01.00 INTRODUCTION

3.02.00 SCOPE OF THE WORKS

3.03.00 DESIGN

3.03.01 General 3.03.02 Design Criteria 3.03.03 Design Information 3.03.04 Specific Design Criteria 3.03.05 Working Drawings 3.03.06 Building Regulations Part L2 Assessment

3.04.00 REMOVAL OF EXISTING SERVICES

3.05.00 ELECTRICAL SUPPLY

3.05.01 General

3.06.00 ELECTRICAL SWITCHGEAR

3.06.01 General 3.06.02 Moulded Case Circuit Breakers 3.06.03 Metering/Instrumentations 3.06.04 Spare Ways 3.06.05 Distribution Equipment

3.07.00 UNINTERRUPTABLE POWER SUPPLY (UPS)

3.08.00 ISOLATED POWER SUPPLY AND ATTICS

3.09.00 EARTHING AND BONDING

3.09.01 General 3.09.02 Specialist Medical Location Bonding

3.10.00 SYSTEM OF WIRING

3.10.01 General 3.10.02 Lighting and Power 3.10.03 Sub-Main Cables 3.10.04 Mechanical Services Wiring 3.10.05 Fire Alarms 3.10.06 Telephones and Data Installation

3.11.00 LIGHTING INSTALLATION

3.11.01 General 3.11.02 Accessories

3.12.00 EMERGENCY LIGHTING

3.13.00 POWER INSTALLATION

3.13.01 General Purpose Power 3.13.02 Other Power 3.13.03 Accessories


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3.14.00 ELECTRICAL INSTALLATION FOR MECHANICAL SERVICES

3.15.00 FIRE ALARM SYSTEM

3.16.00 DATA AND TELEPHONE INSTALLATION

3.17.00 DOOR ACCESS

3.18.00 FIRE DAMPER INTERFACE SYSTEM

3.19.00 NURSE CALL SYSTEM

3.20.00 MEDICAL SERVICES COLUMNS

3.21.00 INDUCTION LOOPS

3.22.00 LIGHTNING PROTECTION

3.23.00 PROVISIONAL SUMS

3.24.00 YEAR 1 SERVICE AND MAINTENANCE

3.24.01 General

3.25.00 SYSTEMS TRAINING

3.26.00 HANDOVER PROCEDURES

3.26.01 General


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SECTION 1 - GENERAL CONDITIONS

1.01.00 DEFINITIONS Within this Specification the following words shall have the meanings herein assigned to them. Shall: shall mean mandatory. Will: shall mean informative. May: shall mean optional. Words: Those importing the singular only shall also include the plural and vice versa. 1.02.00 VARIATIONS TO THE WORKS

The Contract Administrator reserves the right to alter the position of any outlet, fitting, apparatus or equipment, etc., provided that notice is given in writing before actual work on such particular items is commenced. Such alterations shall be carried out without extra charge to the Contract Sum, provided that they do not increase the quantity of materials or labour allowed for that particular section of the Works in the Tender.

1.03.00 QUOTATIONS FOR VARIATIONS

Should a variation required by the Contract Administrator involve an increase or decrease in the Contract Sum the Contractor shall provide a supplementary quotation prior to the variation being carried out unless otherwise agreed with the Contract Administrator. Quotations for variation works shall, as far as is practicable, be based on the Schedule of Rates provided by the Contractor, and shall quote quantities of materials and unit rates for labour and materials required for the works. However, where the variation involves materials not covered by the Schedule of Rates the quotation shall be illustrated to the Contract Administrator as accurate.

1.04.00 SCHEDULE OF RATES The successful Contractor shall submit to the Contractor Administrator, a Quantified Schedule of Rates for basic labour and materials used in the works summating to the Tender Sum and which will be used as a basis for assessing the cost of variations, both omissions and additions. The rates shall be those used for the preparation of the Tender and shall be broken down to detail the labour and material content with the total rate being the all-encompassing installed rate. Rates shall be provided for all basic elements of the scheme on either a unitary basis or a rate per meter run. Typical examples would be:

Item Unit Material (£) Labour (£) Installed Rate (£) Quantity Total (£)

25mm XLPE/SWA 4c M x.xx x.xx x.xx x x.xx

300mm Cable Basket M x.xx x.xx x.xx x x.xx

Luminaire Type ‘A’ 1No x.xx x.xx x.xx x x.xx

1.05.00 ALTERNATIVES Where a particular manufacturer is specified the Contract Administrator will consider alternatives of equal quality but the Tender shall be deemed to include only for the materials detailed in the specification. If any alternatives are approved they will be authorised by Contract Administrator's Instruction.


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1.06.00 CONTRACTOR TO INFORM HIMSELF FULLY The Contractor shall be deemed to have examined the Site, this specification and associated Schedules and the Contract Drawings. No extra cost will be allowed for ignorance due to the Contractor's negligence in this respect. The Contractor shall be deemed to have visited the Site prior to submission of his Tender and to have satisfied himself as to local conditions, accessibility, nature and layout of the site and all other matters which might in any way affect his Tender Price. 1.07.00 OMISSIONS Any queries relating to the Specification or the associated drawings must be brought to the attention of the Contract Administrator in writing immediately they are discovered. The Contractor shall make due allowance in his Tender for any item or items such as pipe sets, fittings, adaptable boxes, supports brackets, etc. whilst not specifically indicated on the drawings or referred to in the Specification are clearly necessary for the proper construction of the Works and the correct operation of the systems in accordance with the best current practice, and to comply with the Specification/Contract Drawings. Any items shown on the Contract Drawings but omitted from the Specification, or described in the Specification but omitted from the Contract Drawings, shall be included. In the event of discrepancies appearing on the drawing, or between the drawings and specification or drawings and Schedules, the Contractor shall refer the matter in writing to the Contract Administrator for interpretation. Such reference shall be made during the Tendering period. No variation in the Tender Price will be considered due to the Contractor's failure to identify such discrepancies to his having incorrectly interpreted any part of the Drawings, Specifications or Schedules. The Contract Administrator’s decision as to the resolving of a discrepancy arising in such circumstances shall be final. 1.08.00 REGULATIONS, ETC The whole of the Works shall be executed in strict conformity with the requirements of the Health and Safety Regulations, Factory acts, and Local Authority and other Bodies concerned except insofar as this Specification may expressly make other arrangements. The Works included in this Contract shall be carried out in accordance with the Regulation, etc. listed below and elsewhere in this Specification as are current at the Date of Tender. i) Relevant sections of the Health and Safety Regulations. ii) Relevant sections of the Factories Act. iii) By-Laws and Regulations of the Local Authority and any other Municipal authorities having jurisdiction. iv) Requirements of the local Water Company. v) Requirements of Gas Safe Register (formerly CORGI). vi) Requirements of the local Electricity Company. vii) Specifications and Codes of Practice of the British Standards Institution. viii) BS 7671 Requirements of Electrical Installations. ix) Regulations and Requirements of the local Fire Brigade. x) The Electricity at Work Regulations. xi) The CDM Regulations. 1.09.00 COMPLIANCE WITH BRITISH STANDARDS Except where otherwise specified all the work in the Contract to which this Specification applies shall conform with the relevant provisions of the appropriate British Standards or British Standards Codes of Practice in being at the Date of Tender. The Contractor shall also comply with any relevant British Standard Specification, or amendment thereto that may be issued subsequent to the acceptance of his Tender, provided that the part (or parts) of the work affected have not already been completed. Where any part of the Works has been completed the contractor must inform the Contract Administrator so that a decision may be reached as to the procedure to be adopted.


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1.10.00 GOVERNMENT LEGISLATION The Contractor shall tender in accordance with all current Government Legislation which affects the running of Contracts and abide by such legislation as may come into force during the period of the Contract. 1.11.00 LOCAL AUTHORITY TESTS/APPROVALS The Contractor shall comply with and give all notices required by any Act of Parliament, Regulations or By-Laws of any Local Authority, Public Services Company or Statutory Body who may have any jurisdiction with regard to the Works or whose systems, are or will be connected, and he shall pay and indemnify the Employer against any fees or charges legally demandable under such Act of Parliament, Regulations or By-Laws in respect of the Works. No extra charge will be allowed due to failure in allowing for this requirement. The Contractor shall also be responsible for ensuring that the obtaining of any directives, consents, approvals or acceptance tests by the relevant Local Authority, Public Utility or other Statutory Body is done by him in compliance with the overall programme for the Works is obtained in writing. 1.12.00 MEASUREMENT OF THE WORKS The Contractor shall be responsible for all Sites and/or drawing measurements required for compilation of quantities of materials required for the proper execution of the Works and shall not rely on any quantities given in this Specification. No claim for extra payment will be sanctioned on the grounds of insufficient knowledge, inaccurate measurements, or other error on the part of the Contractor. The Contractor shall give all necessary assistance to enable the Contract Administrator to examine or measure any of the Works for the purposes of verifying Progress Payment Applications, assessing charges for variations and for other particular reasons that may arise. 1.13.00 SUB-LETTING Where it is normal trade practice that certain sections of the Contract could be sub-let, viz. ventilation ductwork, main cable laying and so forth, the Contractor will be permitted in principle to so sub-let to Specialist Firms subject to prior approval of the Contract Administrator. Full details of the proposed sub-letting, including the name and experience of the proposed Specialist, shall be presented to the Contract Administrator for consideration, in adequate time relative to programme activities to enable due consideration to be given and no portion of the works shall be sub-let unless the Contract Administrator's permission is given in writing. The Contract Administrator’s decision in such matters shall be final. Notwithstanding the Contract Administrator's approval regarding sub-letting the Contractor shall take full responsibility for all works carried out by his Sub-Contractor/s and shall be responsible for ensuring that they comply in all respects with the with the requirements of the conditions applicable to this project. 1.14.00 DRAWINGS

1.14.01 General The Drawings that shall be read in conjunction with this Specification are quoted in the Schedule of Drawings that is incorporated in this Specification. Upon receipt of any reissued drawings the previously current issue shall be endorsed accordingly to avoid its being used for construction purposes. Any costs arising, either to the Contractor or any other parties involved in the Contract, from the Contract proceeding on the basis of a superseded Drawing will be the Contractors entire responsibility. The Contractor shall note that unless previously advised by the Contract Administrator, the tender drawings are not intended for use as working drawings. The Contractor shall include in his Tender for producing Working Drawings of the installation works covered by this Contract for area where a complexity of services occurs, such as Plant Room, Switch rooms, service ducts and roof voids. He shall detail main distribution routes of cables, cable trays and trunking, etc. including details of fixings to the structure


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of such items and arrangement of their support brackets. Typical assembly details, such as Switchgear, shall also be prepared. The Contractor shall be deemed, prior to the preparation of his Working Drawings, to have ascertained precise details of the building construction, either from the Architects Drawings, Site Survey or other relevant information, in respect of specialist building items such as roof and floor construction, suspended ceilings and other building elements that will affect his installation. Before preparing his Drawings he shall also ascertain details of other services to be installed in order to verify that these will not prevent his services being installed in the positions he proposes detailing on his Working Drawings. In the event of the Contractor being unable to obtain sufficient details to comply with the foregoing he shall bring this to the Contract Administrator's attention. All drawings prepared in connection with this Contract shall bear the names of the Site, Employer and Contract Administrator. All detail drawings shall be to a reasonable scale, and the Contract Administrator's decision as to what constitutes a reasonable scale shall be final. All-important dimensions shall be given and the material of which each part is to be constructed shall be indicated. All dimensions marked on the drawings shall be considered correct although measurement by scale may differ therefrom. Detail drawings shall be regarded as correct where they differ from general arrangement drawings. Upon completion of his Working Drawings the Contractor shall submit electronic copies to the Contract Administrator for comment. In the event that variations to the Contract involve modifications to the Contractor's Working Drawings he shall carry these out as necessary and reissue for initial comment and final issue. All such drawing work shall be deemed to have been allowed for in the Contractor's Schedule of Rates and extra costs will not be permitted. All drawings prepared by Specialist Suppliers, manufacturers, etc. that are particular to this Contract shall bear the names of the Site, Employer and Contract Administrator, together with the Contractor. The Contractor will be responsible for making arrangements with Specialist/Manufacturers for all particular drawing required for the project, particularly those required to enable him to make correct provisions for Builder's Work and electric wiring/control equipment. With regard to wiring diagrams the Contractor shall upon receipt verify that the wiring requirements shown are in accordance with those incorporated. The Contractor is required to verify, in the course of producing his Working Drawings, that any Builder's Work provisions are adequate. This particularly relates to the sizes and locations of major holes in the Structure which, in addition to being taken from drawings, shall be checked at Site for size and location if they have been formed in advance of the Working Drawings having been produced. In addition the Contractor shall prepare for the project basic Builder's Work details and drawings, as is normal trade custom. This requirement includes such details as the size and location of bases and plinths, details of pockets for holding down bolts, anti-vibration mountings, etc. Such drawings shall be prepared from certified manufacturer's drawings/leaflets, etc. which relate to the specified equipment where appropriate. The dates for preparation of the Builder's Work Drawings shall be available to suit the construction programme, allowing a period for comment by the Contract Administrator. Following agreement with the Contract Administrator that the Contractor's Drawings and Specialists Drawings may be issued "FOR CONSTRUCTION" this information shall be added to the drawings and formal issue made. At that stage the Contractor shall provide electronic copies of such drawings, the distribution of which will be verified at Site. The issue shall be deemed to apply to the initial and any subsequent reissue of the drawings. All appropriate costs related to this issue of Drawings shall be deemed to be included in the Tender. The extent of comment made by the Contract Administrator on the Contractors and Specialists Drawings referred to in the foregoing sub-clauses, and agreement that such drawings may be generally issued "FOR CONSTRUCTION" shall not be deemed to constitute approval by the Contract Administrator of all that is shown on the drawings. The Contractor shall therefore be fully responsible for the information which he provides by the medium of drawings issued through him, provided that incorrect detail thereon is not based upon information provided by the Architect, Structural Contract


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Administrator or the Employer which proves to be inaccurate. He shall also be fully responsible for the interpretation he places upon any drawings which he obtains from his suppliers and specified Manufacturers/Specialist Suppliers. 1.14.02 Record Drawings The Contractor shall maintain a continuous record of alterations to the Works so as to produce by the end of the project sufficient detail to enable the Contractor to produce a set of Record Drawings showing the installation "As Fitted". Prior to completion of the Contract the Contractor shall arrange for the Record Drawing information to be issued to the Contract Administrator for comment prior to the date of hand-over of the Contract. When the Contract Administrator's comments are received the Contractor shall immediately finalise the drawings and issue to the Contract Administrator a set of the drawings. The Contractor shall obtain from the Contract Administrator an electronic set of drawings and ensure that the drawings are fully converted to become his drawings which would involve removal of the Contract Administrator's or Engineers title block, drawing number, drawing issue information, etc., and the Contractors information substituted. The Contractor shall arrange for the CAD drawings to be altered to incorporate the “as fitted” information so that they represent a true record of the final installed installation. For electrical installations, schematic diagrams for HV/LV supplies, switchgear, cut outs, meter arrangements, etc. will be provided in HV/LV Switch Rooms, Sub Stations and Plant Rooms. The schematic charts described above will be provided in a fixed frame with clear Perspex cover. This will be demountable, to enable up - dating of the information when future works are carried out. Prior to a formal issue he shall issue to the Contract Administrator electronic copies of the drawings for comment. When the Contract Administrators comments are received the Contractor shall incorporate these onto the drawings. He shall then issue to the Contract Administrator the following “as fitted” record information: i) Drawings in AutoCAD compatible format ii) copies of the drawings in print form folded and incorporated in the Operating and Maintenance Manuals The Contractor should note that no instruction concerning the release of Retention Money will be issued by the Contract Administrator until acceptable Record Drawings are issued in accordance with the foregoing. 1.15.00 LABOUR The Contractor shall take all precautions necessary to restrict the area of his Works to the immediate vicinity of the work involved under this Contract and shall not allow his workmen to stray beyond the boundaries of the Works. The Contractor, his operatives or any other employees of specialists associated with the Works will be prohibited from entering any room, department or part of the Employer's premises on the Site other than part where the Works are situated. The Contractor shall base his Tender of the works being carried out during normal working hours applicable to his trade for the area on which the Works are situated. No extra cost for overtime working will be payable unless the Contract Administrator has issued an instruction in writing for such working. Should there be any requirement in the Particular Specification for the Contractor to carry out any work outside normal working hours he shall be deemed to have included in his Tender for all non-productive time related to such working. He shall also ensure that he gives the Employer due notice of the periods at which such working will require to be carried out. The Contractor shall be responsible throughout the Contract for ensuring that the trade custom and local practice is followed in the employment of the appropriate grades of operatives. Not more than one apprentice or semi-skilled assistant shall be employed for each full-rate tradesman.


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The Contractor shall provide Site supervision throughout the period that works under this Contract are being carried out at Site and shall constantly employ on the Site at least one competent person in charge to manage and direct the Works. The person in charge will have control of all drawings, Specifications and other documents which are issued to the Contractor for use or guidance and shall also receive, execute and obey all instruction as may be given by the Contract Administrator. 1.16.00 MATERIALS The Contractor shall also note that Manufacturers quotations generally are based on a 12 months guarantee period from the date of delivery or, in the case or works involving installation by the Manufacturer, date of acceptance and this period may be inadequate to cover the 12 month Defects Liability Period which will be applied to the whole of the Works from the date of handing-over to the Employer. The Contractor shall therefore ensure that he makes due allowance in his Tender for any extra costs arising from such extended warranty. To avoid delays due to non-delivery of materials/equipment the Contractor shall place orders immediately. Delay in the delivery of materials will not necessarily be accepted as a valid reason for extending the completion date of the works unless it can be clearly ascertained that such delay is beyond the control of the Contractor. Alternative manufacturer and/or types of component may be submitted so the Contract dates can be improved. The cost effect of such alternative, either omission or addition shall be identified to the Contract Administrator when approval is sought. Before proposing alternative components in these circumstances the Contractor shall verify the extent, if any, to which their use will affect the installation detailed in the Contract Drawings, or previously submitted Working drawings, and shall advise the Contract Administrator of any such effect/s in submitting the alternative for approval and he shall also identify to the Contract Administrator at that time any cost effect, either omission or addition. The Contract Administrator's decision regarding the use of alternatives proposed shall be final. Where the quality of materials is not specified they shall be the best of their respective kinds and samples or full details may be required by the Contract Administrator for approval before use. All equipment and materials shall be new and the Contractor shall ensure that no materials are fitted which show signs of corrosion or faults or are damaged in any way. In the event that the Contractor does not comply with the requirements of this Clause he shall be fully responsible for all costs arising from the substitution of new materials for unacceptable items. The Contractor shall include for all charges associated with the packing, carriage and delivery of all goods forwarded direct to the Site by whatever means of transport adopted by the supplier and shall also arrange for the return of all empty cases, cable drums, etc. where deposit costs are involved or alternatively for the disposal of all disposable packing, etc. Prior to delivery of any equipment/stores of a bulky nature the Contractor shall ensure that all necessary arrangements for unloading and movement of the equipment/stores can be made in conjunction with other trades that may in any way be affected. Any costs arising from the Contractor's failure to do this, whether comprising abortive delivery charges or additional/special attendance shall be the Contractor's responsibility. The Contractor shall be fully responsible for the off-loading, handling and placing into position of all equipment supplied by him for this Contract. The Contractor shall provide adequate safe storage and protection for all new materials and equipment provided and/or installed by him. Conduits and similar materials shall be adequately supported and stored to prevent bending and distortion. The storage of conduits or other materials by laying them on earth will not be permitted. Where materials and equipment cannot be stored in suitable buildings they shall be raised and supported clear of the ground and be protected against frost, damage due to building work and operations by other Contractors by means of waterproof covers or other appropriate means.


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Machined and bright surfaces shall be protected by paint, tallow or grease where this has not been carried out by others or has become defaced or removed in transit. On completion surfaces so coated shall be cleaned and, where appropriate, polished. All equipment shall be left in a condition ready for painting where painting is specified either as part of this Contract or by others. Parts liable to corrode are to be painted immediately after removal of their temporary protection. The Contractor shall additionally lubricate and carry out all routine maintenance on components of the works during the testing and commissioning period in order that they are fully protected and shall continue to do so from completion of commissioning to the date of hand-over. The Contractor shall not in any circumstances reuse existing conduit, trunking or other materials rendered redundant by new work unless permitted in writing by the Contract Administrator. All scrap or redundant materials that are stripped-out by the Contractor in accordance with this Contract shall be removed from Site by him unless otherwise stated in the Particular Specification. Any materials required for retention by the Employer will be listed in the Particular Specification. No approval given by the Contract Administrator to any sample, pattern or model shall relieve the Contractor from his Liability to complete the Works in accordance with this Specification and the associated drawings and with the Conditions of Contract or relieve him from any of his defects liability and guarantee obligations. Proprietary fittings and apparatus shall bear the maker's usual identification plates and/or symbols which are not to be removed by the Contractor. In particular such items as motors and control gear shall be fitted with nameplates giving the information required by the relevant British Standard. In the case of motors, such nameplates shall also give particulars of speed, for which the machine was designed, together with the maker's serial numbers. The Contractor shall also be responsible for ensuring that, in the event of any equipment being painted by either his own operatives or by others, that nameplates and other identification are not obliterated. 1.17.00 CONTRACTORS PLANT Unless specific arrangements are made to the contrary the Contractor shall, at his own expense, provide all materials, labour, haulage, tools, implements, instruments, machinery and apparatus necessary to execute and complete the Works covered by this Specification and associated Drawings. 1.18.00 INTERFERENCE SUPPRESSION OF CONTRACTOR'S EQUIPMENT All equipment used by the Contractor for the erection of the Works shall be suppressed to comply with BS 800 so as to cause no interference with radio, television or electronic equipment in use in other buildings on the Site or on adjoining Sites. 1.19.00 SUPPLY OF SERVICES FOR CONSTRUCTION

1.19.01 Electrical The electrical supplies required for the testing/commissioning of Electrical and Mechanical Services Plant shall be provided via the permanent electrical installation and the Contractor shall therefore ensure that his programming makes allowance for this. In order that such supply points can be used the appropriate section of the electrical Installation shall be fully completed, tested and commissioning to the entire satisfaction of the Contract Administrator whose decision in this matter shall be final. Whilst sections of the electrical installation will be used for testing/commissioning supplies this shall not be deemed to reduce the Defects Liability Period which will run from the date of hand-over for the complete installation. All additional costs involved in the extended warranty implied by the foregoing shall be included in the Tender and no claims will be permitted under this heading. The Contractor shall also be responsible for ensuring that all parts of the electrical installation not used for testing/commissioning are completely safe when the system is energised, whether the parts are complete or not, and shall allow for all appropriate warning notices at switchboards, distribution boards and so forth and for all necessary screening, insulation, etc.


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Once a piece of equipment has been commissioned it shall not continue to be used unless this is necessary in connection with the testing/commissioning of further sections of Works. The Contract Administrator's decision regarding the use of the installation following testing/commissioning will be final. 1.19.02 Water In the event that any parts of the permanent installation are utilised in order to carry water to the required location on the Site the Contractor shall be responsible for ensuring that all necessary blanking-off, closing of valves, provision of warning notices and any other measures necessary to ensure that flooding of the building cannot occur are carried out. If water is in use at the time of the year when the risk of freezing arises the Contractor shall also include in his responsibilities relative to the avoidance of flooding for either frost protection measures or for draining-down of the system at the end of each working day or shall ensure that the Contractor has made such provisions. The Contractor shall be responsible for the control of the water supply to the Site including closing the main stop cock at the end of each working day. 1.19.03 Gas It is assumed that the permanent pipework installation will be used to provide gas supplies to the locations where it is required for testing/commissioning and the Contractor shall be responsible for providing and maintaining all appropriate warning notices on pipework and equipment to indicate that the gas pipework is "live". The Contractor shall be responsible for the control of the gas supply, including shut down at end of each working day. 1.19.04 Supplies for use of the Permanent Installations In the event that the Contractor makes special arrangements with the Employer regarding the use of the permanent installations in advance of total hand-over (beyond usage for testing/commissioning all costs associated with such arrangements will be the entire responsibility of the Contractor, including any extended warranties Works. Under no circumstances shall use be made of any section of the permanent installation until it has been inspected, tested, commissioned and accepted by the Contract Administrator as in a suitable condition for use. The testing/commissioning programme shall be adjusted as necessary to advise and record any revisions resultant upon early use of the permanent installations. The Contractors will only be permitted to make use of the permanent installations with the prior approval of the Contract Administrator and for tendering purposes should assume that there will not be any usage beyond that related to testing and commissioning of the services installations. 1.20.00 PROGRAMME/PROGRESS SCHEDULES The Contractor shall prepare the Master Programme for the Works, which shall incorporate sufficient detail to enable clear indication of the proposed activities. 1.21.00 SITE MEETINGS The Contractor shall attend Site Meetings as required by the Contract Administrator. 1.22.00 SETTING-OUT The positions of points, outlets, equipment, etc. indicated on the Drawings are given for tendering purposes only and the exact positions shall be confirmed on Site. Provided that final locations are advised to the Contractor prior to his installation work commencing no variation in cost will be allowed for the final positioning unless it can be clearly indicated that additional materials/labour have been involved. The Contractor shall be responsible for all Site measurements related to the setting out of his works and associated Builder's Work/Attendance. 1.23.00 EASE OF MAINTENANCE In laying out the works the Contractor shall at all times give proper consideration to the future maintenance of the plant


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and shall include for such component parts as are available from the manufacturer of the equipment or plant to ensure ease of maintenance. 1.24.00 SAMPLES FOR CONTRACT ADMINISTRATORS APPROVAL The Contractor shall submit to the Contract Administrator, for approval, such samples of workmanship, materials or equipment, which the Contractor proposes to use in the execution of the works as the Contract Administrator shall require. Where in the opinion of the Contract Administrator, the samples submitted are not of a sufficiently high standard or are unsuitable for use in the proposed circumstances, he shall have the right to instruct the Contractor to obtain alternative materials or equipment from such a source as the Contract Administrator shall decide. In those cases where the original material samples were obtained from a specified manufacturer and the Contract Administrator decides upon an alternative, the Contractor shall be reimbursed for any additional expenditure he incurs arising from the Contract Administrators decision. All other expenditure in connection with original samples submitted for approval shall be borne by the Contractor. 1.25.00 DIMENSIONS Dimensions written on drawings shall, in all cases, be taken in preference to those given by use of a scale and the wording of the Specification shall be taken in preference to dimensions written on the drawings. However, any conflicting information shall be brought to the notice of the Contract Administrator. 1.26.00 MARKING-OUT FOR BUILDERS WORK Any Builder's Works requirements, which the Contractor has not detailed on Builder's Work Drawings shall be positively marked-out on Site by the Contractor. 1.27.00 INTERRUPTION OF SERVICES The Contractor shall not, without received written permission from the Contract Administrator, interface with or interrupt in any way the operation of any existing services to other operational buildings on the Site and, in the case of work of statutory Authorities or adjoining private owners, without the permission of such Authorities or owners. Any permission given by the Contract Administrator will be "in principle" and the Contractor remains responsible for making all necessary arrangements with those affected by the interruption of the Service and shall comply with their requirements as to the time and period of such interruption bringing to the attention of the Contract Administrator any difficulties which arise and which prevent the Contractor proceeding with the Works as specified. In the event of any costs or charges arising from the failure of the Contractor to so negotiate these shall be his entire responsibility. 1.28.00 EXTERNAL CONNECTIONS Before putting any plant into operation the Contractor shall satisfy as to the correctness of all connection between any plant and apparatus that is installed under this Contract as between any existing plant or apparatus or that has been supplied under any other Contract. Before any plant so connected is brought into operation for testing/commissioning the Contractor shall be responsible for ensuring that the Owner of the existing plant/apparatus or the Supplier of it is made aware that such action is to be taken and shall give them the opportunity of verifying that correct connections have been made. Any costs arising from incorrect connections having been made will be the Contractor's responsibility unless it can be shown that these arose due to incorrect information been given to him. 1.29.00 INSTALLATION OF ACCESSORIES The Contractor shall agree prior to the completion of any section of the Works a programme for the installation of accessories (switches, socket outlets, etc.) relative to the completion of final decorations.


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If the preferred alternative of the fitting of accessories following decorations is adopted the Contractor shall ensure that every care is taken to avoid damaging the finished decorations in any way. Costs arising from any remedial work necessary on decorations resultant upon damage caused by the Contractor shall be at his cost. If the alternative method of installation of accessories preceding final decorations is adopted then the Contractor shall ensure that all necessary steps to fully protect the accessory plates/enclosures before decoration works is commenced, provision and fixing of such protection being the Contractor's responsibility. Any costs arising from the necessity for accessories to be replaced, both material costs and labour involved, will be the responsibility of the Contractor and the Contract Administrator's decision as to what constitutes an unacceptable accessory will be final. In instances where accessories of the pattern having removable cover plates are specified such cover plates shall be fitted. Under no circumstances shall lighting fittings be installed in advance of completion of decorations of the surface they are fixed to. Before any accessories or lighting fittings are erected the Contractor shall ensure that the plaster finish has been taken-up to the full perimeter of flush mounted boxes and where this is not the case shall draw this to the attention of the Contract Administrator. No accessories or fittings shall be installed until the necessary making good is completed and the making-up of plaster (and decorations) to installed accessory plates, etc., is unacceptable. 1.30.00 CO-ORDINATIONS WITH OTHER TRADES Due recognition shall be given to the sequence of installation of services in ceiling voids, riser ducts, etc. in which other services are also installed and the required sequence shall be agreed. The Contractor shall also ensure that the final arrangements of his services relative to installation work by other trades will allow adequate space for future maintenance and for access to enable this to be carried out. If, following installation of his services in an agreed position, the Contractor finds that work carried out by other trades in any way restricts such access/maintenance space he shall immediately draw this to the attention of the Contract Administrator. 1.31.00 SPECIALIST TRADE ATTENDANCE OF EQUIPMENT The Contractor shall arrange and make all payments for Specialist tradesmen to visit the Site, adjust and put into working order all items of Specialist Equipment as detailed in the Specification. He shall ensure that all such arrangements are made to comply with the overall construction programme and also for compliance with the agreed testing/commissioning programme. If more than one visit is required by any particular Specialist all costs arising shall have been deemed to be included in the Tender. 1.32.00 FIRE PRECAUTIONS The Contractor shall co-operate in all matters concerned with fire precautions and shall take all reasonable precautions to avoid the outbreak of fire. For work in existing buildings he shall ensure that his operatives do not smoke in Roof Spaces and he shall also ensure that his work can comply fully with any "No Smoking" notices/instructions which apply to the building. All fire escape routes shall be kept unobstructed especially fire exit doors. When work necessitates the use of naked flame in any locations having a high fire risk, either resultant upon the building structure or the materials installed or being installed therein, a portable fire extinguisher shall be readily available. Provision of such extinguisher is the responsibility of the Contractor. The Contractor shall, at the end of each day's work, arrange for all cylinders containing flammable gas such as acetylene, propane, butane or other similar gas to be collected and stored in a fire-proof store sited not less than 10 metres from the nearest occupied building. 1.33.00 CLEARANCE OF SITE The Contractor shall organise his work in a tidy manner and arrange for all redundant materials, packing and rubbish to be collected together and disposed of. 1.34.00 NOTICE PRIOR TO COVER


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The Contractor shall give reasonable notice to the Contract Administrator whenever any Works or materials are intended to be covered with earth, insulation, non-removable covers/casing or otherwise in order that the engineer may inspect the Works prior to their concealment. In default of so doing the Contractor shall, if so required by the Contract Administrator, uncover such work and materials at his own expense. Such expense shall include the cost of any associated 'Builder's Work or attendance in exposing the services and reinstating building fabric/finishes. 1.35.00 INSPECTION/TESTS DURING PROGRESS The Contractor shall carry out test/inspection during the process of manufacture, erection or otherwise as the Contract Administrator shall require, to prove the physical characteristics of all materials and manufactured parts incorporated in the Works and to ensure that they will withstand the pressure and other conditions under which they will be required to operate. All apparatus, measuring instruments or meters required for such inspection and tests shall be calibrated to the satisfaction of the Contract Administrator and shall be provided and arranged for, together with any connection necessary, by and at the expense of the Contractor. Such inspection/tests during progress shall be in addition to those carried out at completion and in connection with Commissioning. 1.36.00 TESTING AND COMMISSIONING 1.36.01 General Testing and commissioning shall be undertaken by the Contractor for the whole of the Contract Works. The Contractor shall provide a Commissioning Engineer who is fully conversant with the operation of the Works and competent to supervise and carry out all the examinations, tests, commissioning, etc. that are required. The Contractor, or his Specialist, shall provide such assistance, competent labour, lubricants, tools, all test instruments and equipment and other materials as may be required to carry out all the tests required, both on the Site or in particular circumstances at any Specialist's Suppliers or Manufacturer's premises. 1.36.02 Allowance in Tender for Testing/Commissioning The Contractor shall be deemed to have allowed in his Tender for all costs associated with testing/commissioning in accordance with the requirements of this Specification and shall enter the cost he has allowed at the appropriate item in the Summary of Tender. A figure must be entered at this item to enable the Contract Administrator to consider the viability of the cost against the known testing/commissioning requirements. 1.36.03 Commissioning Programme The Contractor shall prepare an initial programme of the commissioning and associated activities and sufficient time shall be allocated for each activity. The programme shall be drawn separately to the construction programme but all activities shall be clearly identified and cross-referenced. It is stressed that testing/commissioning must be carried out during the period of the Contract and due allowance must therefore be made for these activities on the Construction programme. The Contractor shall give the Contract Administrator sufficient notice of readiness to carry out any tests that will not take place in accordance with the final programme and agree revised dates with the Contract Administrator. All testing/commissioning procedures shall be completed to the Contract Administrators satisfaction within the Contract Period. The Contractor should note that the Contract cannot be handed-over until all testing/commissioning activities have been satisfactorily completed and the installations accepted by the Contract Administrator as ready for hand over. 1.36.04 Examination and Tests during Manufacture and Installation The Contractor shall:- a. Test sections of the Works and items of equipment so required by this Specification during the installation

period, giving the Contract Administrator facilities to witness such tests. Such facilities shall enable the Contract


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Administrator to make checks on materials at reasonable times on manufacturer's premises if this will assist installation progress.

b. Provide the Contract Administrator with a copy of each test certificate immediately after issue or alternatively

incorporate the test certificate in the Commissioning Manual for the service involved.

Testing of sections shall not eliminate the need for tests on the completed Works. No services shall be buried or covered, or ceilings assembled, or duct covers placed in position until tests have been carried out by the Contractor and accepted by the Contract Administrator. Individual component tests shall be undertaken as soon as possible after installation to establish the validity of the component at an early date.

1.36.05 Pre-acceptance and Setting to Work The Contractor shall, after carrying out his own initial tests to ensure the safe and satisfactory condition of the installation, set to work, regulate and adjust the complete installation as necessary and check that the designed requirements are being met before offering the Works to the Contract Administrator for the final testing/commissioning/acceptance procedures. 1.36.06 Witnessing of Tests Witnessing of tests and the corresponding results may be undertaken by the Contract Administrator but non-attendance by him shall not absolve the Contractor from his responsibility for correctly carrying out the tests and correctly recording the results obtained. Notwithstanding witnessing by the Contract Administrator the Contractor shall take full responsibility for the test results recorded by him in the Commissioning Manual. 1.36.07 Instructions to Staff The Contractor shall be responsible for instructing members of the Employer's Staff or other nominated person/s in the operation and maintenance of the complete installation, and shall include in the Tender provision for full time attendance by a member/members of his staff fully conversant with the Works and fully confident to give instructions (or shall provide such service by his Commissioning Specialist). Such instructions shall be given at times and dates agreed with the Employer by the Contract Administrator and for which the Contractor shall be given due notice. All costs associated with the foregoing shall be included in the Tender as part of the costs associated with testing/commissioning. 1.37.00 LABELS All main plant and equipment shall have an identification label which shall be affixed with screws. Where labels are required, these shall be 'Traffolyte' laminated white-black-white, with 6mm or 12mm lettering, the precise wording to be decided by the Contract Administrator as the work progresses. Danger or warning labels shall be red on white. 1.38.00 PAINTING On completion, all ironwork, brackets, supports etc. shall be cleaned, wire-brushed and prepared as necessary, painted one coat of grey non-lead based primer and one finishing coat to the Contract Administrator's choice. 1.39.00 OPERATION & MAINTENANCE MANUALS At the completion of the installation the Contractor shall provide two copies of an operating and maintenance manual. One copy shall be in the form of a hard-backed ring binder, of sufficient size adequate to contain all the information. The information shall be printed on good quality paper with illustrations where necessary. The manual shall be properly labelled with each section having separators and clearly labelled as detailed in the table below. One copy shall be in electronic format. The Operating and Maintenance Instructions shall include Sections as detailed in the table below, which is not exhaustive and should be flexible to represent the particular job.


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No. Section of Manual Examples

1. Index to contents -

2. Introduction, abbreviations and Health and Safety notices

-

3. Asset form detailing all plant, its maintenance schedule and location

A list of all maintainable assets, including boilers, programmers, time switches, air handling plant, calorifiers, storage cisterns, intruder alarm, fire alarm components, time switches, RCDs, lifts etc.

4. List of all record drawings -

5. General description of plant and associated systems with diagrammatic layouts, and description of safe and correct operation

A simple paragraph detailing each system with schematic diagram for more complicated systems i.e. heating circuits, air handling plant, valve charts, fire alarm, heating controls and structured data cabling. etc.

6. Design and performance data

Data relating to criteria set in control panels for example plant-operating temperatures, times and settings, or more simply times programmed in time switches for water heaters.

7. Test results of plant, including commissioning certificates

Copies of all certificates including gas testing, disinfection, lifts, NICEIC Certificates covering the general electrical installation, emergency lighting and fire alarm etc.

8. Technical information of plant

Copies of all technical information for future maintenance or operating purposes. E.g. programmer manuals, fire alarm manual, intruder alarm panel manual.

9. Operational instructions for all plant and associated systems

Copies of all detailed operating instructions for use by the client, building occupier or maintenance person, e.g. programmer setting instructions, time-switch setting instructions, fire alarm panel instructions.

10. Emergency procedures

Isolation details for services and other systems with set procedures, and contact details for contractors, utilities, etc. Lowering procedures for lifts, generators and other systems.

11. Maintenance schedule including manufacturer’s warranty details

Copies of extended warranty certificates and guarantees, list of plant, tanks, with tasks and frequencies, etc. Copies of maintenance contracts – i.e. fire alarms and lifts.

12. Recommended spares list List of spare filters, lamps, MCB’s and other sundry spares either supplied under contract or recommended by the manufacturer or supplier.

13. List of manufacturers, suppliers and specialist sub-contractors

Detailed lists with address, telephone, fax numbers, e-mail and internet addresses.

14. Copy of record drawings Updated print of all drawings with record information.

15. Copies of all software programmes and programming codes

CD-ROM of software and programming codes for programmers, fire alarm panels Building Management Systems (BMS), etc.


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No. Section of Manual Examples

16. Hazards associated with dismantling or removal of services

Fluorescent lamps, etc., that may affect health and safety.

17. Log book for monitoring energy consumption Tables with location of each meter and sub-meter with initial readings.

For smaller projects the detailed information shall on agreement be less, the format and amount of information shall be relative to job size or complexity. The Contractor does not need to include exhaustive lists and product information sheets on standard products and components. Photocopies of manufacturers’ catalogues should not be included in most cases. The manual does not need to include copies of this project specification. The manuals shall be handed to the Principal Designer or Employer within seven days of the completion of the Contract. The Operating and Maintenance manual shall include all information required for the Construction (Design and Management) Regulations 2015 safety file, Control of Substances Hazardous to Health Regulations 1999, Building Regulations Approved Document L2 Conservation of fuel and power energy log-book, and HSE’s Approved Code of Practice. 1.40.00 DEFECTS LIABILITY PERIOD The Contractor shall make good with all possible speed any defect in, or damage to, any portion of the Works which may develop during the period of 12 months after that portion shall have been taken-over under a Certificate of Practical Completion and which arises either: i) From defective materials supplied by the Contractor. ii) From defective workmanship on the part of the Contractors Operators, and iii) From any act or omission of the Contractor. Items i)-iii) above are also deemed to cover any works carried out by the Contractor during the Defects Liability Period. When any such defect or damage occurs the Contract Administrator will inform the Contractor stating in writing the nature of the defect or damage so that this may be rectified in accordance with the foregoing. If the Contractor fails to rectify any defect within reasonable time then the Contract Administrator may instruct to have the work carried out by another Contractor. In this event the costs arising from this further Contractor's activities will be deducted from the Contractor's final account. If the Contractor replaces or renews any portion of the Works, the provision of this Clause shall apply to the portion of the Works so replaced or renewed until the expiration of 12 months from the date of such replacement or renewal. 1.41.00 CDM REGULATIONS This project will be subject to the statutory conditions imposed by the Construction (Design and Management) Regulations 2015. The Contractor shall take account of health and safety issues when preparing and presenting tender and designs. The Contractor shall assist in the development of the Health and Safety Plan and co-operate with the Principal Designer and all other Contractors/Sub Contractors to ensure compliance with health and safety legislation. Provide all relevant information on the health and safety risks created by the works and provide detailed method statements on how they will be controlled.


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The Contractor shall manage the works so that they comply with rules in the Health and Safety plan and directions from the Principal Contractor. The Contractor shall provide information for the Health and Safety files and about injuries, dangerous occurrences and ill health. The Contractor shall provide health and safety information to all of their employees. 1.42.00 COPYRIGHT The Specifications and Drawings shall be confidential, and the Contractor shall not show these to third parties without permission, or use them in any way not connected with the execution of the Contract.


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SECTION 2: MATERIALS AND WORKMANSHIP: ELECTRICAL 2.01.00 GENERAL 2.01.01 Regulations The works shall comply in all respects to the following: a. BS 7671 Requirements for Electrical Installations b. Health and Safety at Work Act 1974 c. Electricity at Work Regulations 1989 d. British Standards and Codes of Practice where applicable e. requirements of the Regional Electricity Companies The Contractor shall draw to the attention of the Contract Administrator any situations such as elements of the structure, routing of cables, co-ordination with other trades etc. which would affect the design of the installation as presented as part of this Specification. 2.01.02 Segregation of Services The independent conduit system or separate compartments of a multi-compartment trunking system shall be used except where otherwise specified for each of the following: i) mains voltage lighting and power ii) computer Data Systems iii) telephones iv) intercommunication systems v) fire alarms and emergency lights 2.01.03 Works Tests Test at works all items for which this is required by the appropriate British Standard Specification, by this Specification and otherwise as may be directed. 2.01.04 Supports Full details of the hangers, supports and methods of fixing shall be submitted for comment to the Contract Administrator before fixing commences. Due consideration shall be given where trunking, cable trays etc. cross the building expansion joints. 2.01.05 Polychlorinated Biphenyls No substance containing ANY Polychlorinated Biphenyl (PCB) may be used on this Contract. PCB substances have been used as cooling/insulating fluid in electrical equipment such as transformers, capacitors, fluorescent lighting ballast, etc., and in hydraulic and heat transfer equipment. Common trade names are Askeral, Aroclor, Clophen, Chlorextol, Dvkanol, Fenclor, Inerteen, Kanechlor, Moutar, Nofkamol, Phenoclor, Pyralene, Pyranol, Sanothern FR, Sovol, and Therminol. 2.01.06 Asbestos


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No asbestos shall be used in any form on this Contract, unless specifically authorised by the Contract Administrator, in writing. 2.02.00 SWITCHGEAR 2.02.01 General All switchgear shall be compatible and shall where possible be of a similar style of the same manufacturer. 2.02.02 L.V. Switchboards and Panels All switchboards and panels shall be of sheet steel construction, of adequate thickness, suitably braced to form a rigid structure metal clad, and totally enclosed, with a rating of 440/550 volts. Exterior corners and edges shall be rounded to give a smooth overall appearance and doors fitted with gaskets and removable for ease of installation. They shall be constructed to comply with BS EN 60947-1, BS EN 60947-2 and BS EN 60439-1 where appropriate. Fuses shall generally be to BS 88 Part 1 Class Q1 with motors being protected by motor rated fuses as required. MCB's shall comply with BS EN 60898 and BS EN 60947-2. The cable entry plates on non-demountable units and cubicles shall be readily removable to facilitate the forming of the holes for cable boxes, conduit, etc. The switchboard shall be complete with the fused switch or switchfuse types as stated. Extension or cable spreader boxes mounted directly on to switch or fusegear enclosures shall be allowed for in accordance with the manufacturer's recommendations. The equipment shall be fitted with identifying labels and also warning labels on all covers, and doors, and a main label in accordance with BS EN 60439 which shall state the voltage rating, current rating, class of equipment, fault rating and serial number. Drawings of the switchboards and panels shall be submitted to the Contract Administrator for approval before manufacture is commenced. i) Unit Type (Industrial) Specifically, unit type switchboards shall be constructed of fuse switches or switchfuses as specified, mounted on an angle iron framework of dimensions as indicated on the drawings, or constructed of other proprietary type of steel framework or rigid construction and free from vibration due to operation of the switchgear. The framework shall be filed clean at intersections before being bolted together to ensure a good earth continuity, securely fixed to the structure by means of built in fixing or masonry bolts. They shall be fitted with a busbar chamber which shall extend the full length of the switch frame. The busbars shall be colour coded and be of copper. Insulated solid copper connections shall be provided between busbars and switches to BS 91 for connection above 60 amp. PVC insulated cables shall be used for other inter-connections. Phase identification by coloured PVC sleeving or tape shall be provided. The quality of the insulation of site built assemblies shall be verified by tests equivalent to those specified in the British Standard for similar type tested equipment. ii) Cubicle Type Cubicle type switchboard units shall be manufactured and tested in accordance with the relevant British Standard. It shall be suitably sized to accept additional components and be neatly and symmetrically arranged and connected with purpose-made adaptors to permit the connection of trunking and distribution busbar chambers so that all cables are enclosed.


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The switchboard shall be provided with sealing boxes to suit cable lugs, clamp type terminals or thimbles. Where compression type terminators are provided they shall be made using an approved type of cable lug and compression tool which is specially designed for the purpose by the manufacturer of the cables to be connected to the switchgear and in which the crimping action and pressure are automatically controlled by the tool. Cables shall in all cases be taken direct to the terminals of the switchgear, except where otherwise directed in writing by the Contract Administrator. Pinching screws which bear directly on the cables shall not be used on equipment having a current rating exceeding 15 amps. Outgoing cables shall not pass through busbar chambers. The unit shall be given one coat of rust inhibiting paint, one coat of undercoat and one coat of enamel to a BS colour, to be selected by the Contract Administrator for the exterior of the switchboard and with stove enamel for the interior of the switchboard. It shall be free from rust patches before erection. 2.02.03 Distribution Boards Distribution boards shall be metal clad construction suitable for surface or flush mounting as required. They shall be manufactured to comply with the appropriate British Standard for 500 volt rating. Each board shall be fitted with a neutral bar and earth bar having a separate terminal for each outgoing way. The neutral and earth conductors shall be connected in the same sequence as their phase conductors. The distribution boards shall be firmly secured to the building fabric by means of rawl bolts or other approved method, or to a metal framework by means of nuts and bolts, fitted at a height of not more than 1800mm to the bottom of the distribution board unless otherwise directed by the Contract Administrator. The distribution boards shall be fitted with an integral isolator as a means of isolating the distribution board from the incoming supply. Each distribution board shall be fitted with a hinged cover and barrel lock with the key removable only in the locked position. Distribution board cases shall provide a degree of protection against contact with live ports and the ingress of dust, solid objects or moisture not less than IP41 as defined in BS En 60947-1 unless otherwise stated. Each distribution board shall be provided with an engraved plastic label on the outside of the front cover, bearing the designation of the board and its reference number if any. The label shall be fixed in position by means of two or four chromium plated set screws. Embossed self adhesive plastic ribbon labels will not be acceptable. Each distribution board shall be complete with a typewritten circuit chart mounted inside in a transparent non-flammable pocket securely mounted on the board. Charts shall give full details of the outlets controlled, circuit number, fuse/MCB rating, cable size, MLOR and where appropriate the phase. Each distribution board shall have a coloured plastic disc not less in diameter than 20mm fixed to its front cover to indicate the supply phases present. 2.02.04 Switches and Disconnectors All equipment shall be air-break type unless specifically indicated otherwise and shall be constructed to comply with BS EN 60947-3. The rated making and breaking capacities and the rated conditional short-circuit current for each item of equipment shall be stated by the manufacturer and the appropriate test certificates provided. Each item of equipment shall be provided with the means to enable it to be locked in the off position. In addition, any item for use as an earthing switch shall be provided with means of locking in the earthed position. All equipment shall be of the appropriate utilisation category and class of duty for the application.


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Equipment shall be de-rated as recommended by the manufacturer if environmental conditions fall outside the standard conditions defined in BS EN 60947-3. Enclosures shall be suitable for the environment at the location where the equipment will operate. Each item of equipment within a cubicle or other enclosure shall be of the withdrawable type for ease of maintenance. It shall be possible to carry out all routine maintenance and changing of fuses and contacts without disconnecting any cables or busbars. Each item of equipment shall be clearly labelled with its function by means of permanently fixed labels. i) Switches Switches shall be switch-disconnectors as defined in BS EN 60947-3. This means that when in the open position switches shall satisfy the safety isolating requirements for disconnectors. Switches shall be rated for uninterrupted duty and shall be capable of making, carrying continuously and breaking full rated current. Switches shall be capable of carrying a short circuit current for 3 seconds. Switches shall give position and decisive indication of open and closed positions and when in open position shall satisfy requirements for a disconnector. Switch mechanisms shall be so designed that switches cannot be opened within 3seconds of being closed. Switches shall operate by means of manual operation where speed of operation is independent of the effort of the operator. Charging of springs and closing of the switch shall be on continuous manual operation. ii) Disconnectors Disconnectors shall be rated to carry normal full load current continuously and to carry short circuit current for 3 seconds. The rated making and breaking capacities of disconnectors shall be as required by the duty they are to perform and the rated values for each disconnector shall be stated by the manufacturer. The number of on-load operating cycles at the rated making and breaking capacity shall be stated by the manufacturer. Disconnectors shall be independent manual operation. The mechanism shall be so designed or arranged that disconnectors cannot be opened within 3 seconds of being closed. 2.02.05 Protective Devices i) General Protection shall be afforded as follows: a. Protection against Direct Contact

Protection against direct contact shall be afforded by insulation of live parts and/or by barriers or enclosures. Protection by means of obstacles or placing out of reach shall not be used unless particularly referred to in this Specification.

b. Protection against Indirect Contact Protection against indirect contact shall be afforded by earthed equipotential bonding and automatic


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disconnection of supply. Protection by means of non-conducting location, Class II equipment, earth free local equipotential bonding or electrical separation shall not be used unless particularly referred to in this Specification.

c. Protection against Overcurrent The form of protection against overload on short circuit currents is detailed in this Specification.

ii) Fuses All fuses supplied by the Contractor for this project shall be of the high rupturing capacity type (HRC) and for MV duty shall be of the 440 volt pattern to comply with BS 88, Class Q1. The fuses shall be of the centre or off-set tag type to suit the fuse carriers provided on the equipment. Where the manufacturers supply equipment is already equipped with fuses the Contractor shall ensure that they comply with the foregoing. Spare fuse cartridges shall be provided as detailed. Fuses for fused connection units shall be to BS 1362. iii) Miniature Circuit Breakers Miniature circuit breakers shall comply with BS EN 60898 and shall match the manufacture of the distribution boards, etc. supplied. The Contractor shall verify that the correct rating breaker is fitted to all circuits before connection is made at distribution boards, etc. iv) Moulded Case Circuit Breakers Moulded case circuit breakers shall comply with BS EN 60947-2. v) Residual Current Devices Residual current devices (RCD's) shall comply with BS 4293 and with the requirements of BS 7671. When incorporating overcurrent and short circuit trips and used as circuit-breakers RCD's shall comply also with BS EN 60947-2. When used as disconnectors or switches RCD's they shall comply also with BS EN 60947-3. Residual current shall be measured by transformer which may be zero-sequence-connected or core balance type. RCD's shall operate when the residual current exceeds 30mA. RCD's shall operate in 0.4 seconds or less. RCD's shall have the appropriate short-circuit strength for the location in the system at which they are installed and shall be capable of making, carrying and braking the full short-circuit current. This requirement shall apply whether or not the RCD is the sole or main circuit breaker at that point in the system. Unless used as circuit-breakers RCD's shall be connected in series with the overload and short-circuit devices in the system. RCD's shall not be used as the sole means of protection against direct contact. Every RCD shall be provided with a test button and an engraved clearly legible label stating 'TEST FREQUENTLY'. Normal leakage current, when no fault exists, shall not cause a residual current of more than 15mA to flow. Should the normal residual current exceed 15mA then the circuits shall be further sub-divided and additional RCD's installed.


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2.03.00 CABLE & CABLE INSTALLATION 2.03.01 General Cables of the same type shall generally be of the same manufacture. All cables shall comply with British Standards and all conductors shall be copper unless otherwise specified. All cables shall be delivered to site with the manufacturers' seals, labels, or other proof of origin intact. Such labels and seals shall not be removed until the cable is required for use, and shall be retained for inspection. Cables shall be handled, terminated and installed in accordance with the cable manufacturer's recommendations. The technical advice of the manufacturer's specialists shall be followed if any special conditions or unusual circumstances apply. The Contractor shall be responsible for making accurate measurements of cable lengths on site with due allowance for cutting jointing terminating snaking in trenches and wastage. To avoid risk of damage to cables during a period of low temperature, they shall only be installed when the temperature is above 0o and has been so for the previous 24 hours. 2.03.02 Armoured Cables i) General These shall be as specified on the Contract Drawings or in the Specification and shall comply in every respect with the following. Cables shall be accompanied by duplicate copies of the maker's test certificate and full description for each drum of cable. One copy of the test certificate shall be forwarded to the Contract Administrator. The routes of cable runs shall be agreed with the Contract Administrator prior to the commencement of the work. The routes shall be measured by the Contractor on site and he shall be responsible for ensuring that the correct lengths are ordered. Any length found to be measured too short shall be replaced with cable of the correct length. Cables shall be delivered to the site in one continuous length on a drum ready for laying. No 'through' or 'T' joints shall be made unless detailed elsewhere in the Specification or shown on the drawing. Cables shall be manufactured by only one maker on any one Contract. Cables shall be supported as necessary to meet the requirements of BS 7671 and the manufacturers recommendations. Cables shall be terminated in suitable compression glands of the type which provide an anchorage and a cross-joint bonding of the armouring. The glands shall then be fitted with PVC shrouds which completely encase them. Cables shall be installed with each length of cable marked at each end and at access points by a plastic label stamped to indicated the cable size and circuit. They shall be installed in such a manner that the cable and the cleats do not come into contact with gas, oil, steam, hot and cold water or any other service. In ducts and on the walls of the building silicone aluminium claw type cleat supports or glass fibre, nylon reinforced hooks and clamps shall be used. Cleats shall be of the correct size and type to suit the overall diameter of the cable and installed in manner that no undue strain is put on the sealing gland. Where cables pass through floors or walls the cable shall be stopped with a fire resisting infil in compliance with the BS 7671.


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The cable shall be protected from mechanical damage to a height of 2M above floor level, where run on the surface of walls. Where access to a building is required short lengths of glazed earthenware, pitchfibre, or heavy duty plastic cable conduit, so designed and installed that the cable is not damaged when drawn into the conduit shall be provided. The entry point shall be sealed with a weak concrete mix to prevent the ingress of moisture and vermin. All cable routes shall be clearly marked on the 'As-Fitted' drawings with adequate dimensions from fixed building lines to facilitate subsequent identification of the cable route. All PVC insulated and armoured cables shall be terminated with brass universal Type EIW glands as manufactured by Messrs B.C.C. Ltd. Consideration will be given to the use of an alternative type of gland upon receipt of a sample, but to ensure uniformity of tendering, appropriate glands from the range specified should be included. A PVC shroud which completely encases the gland shall also be provided where it is external to equipment. Gland plates to reinforce sheet metal enclosures of busbar chambers, distribution fuseboards and so forth, shall be provided in order to prevent the distortion of the latter, such gland plates being constructed from mild steel having a minimum of 6mm. The physical connection between the cable terminal gland and the equipment shall be effected by the use of a flanged conduit coupling or locknut into which the gland shall be rigidly screwed. The coupling shall be attached rigidly to the gland plate, or the cast iron enclosure, by means of a brass hexagonal male bush through a clearance hole drilled for the purpose. Due attention shall be given to the necessity for obtaining a low continuity reading between the cable armour and metal enclosures. All paint, rust and scale shall be removed from the metalwork in contact with the face of the flanged coupling and lead compression washers or brass crush washers and brass earth tag shall be inserted between the body and the coupling to ensure a perfect bond. A PVC shroud which completely encases the gland shall also be provided where it is external to the equipment. ii) PVC Insulated Cables (Copper) These shall be of the PVC insulated, bedded, single wire armoured and PVC sheathed overall pattern, to B.S 6346, 600/1000 volt grade, 2, 3 or 4 core type as required. iii) XLPE Insulated Cables These shall be of the cross linked polyethyne bedded single wire armoured and PVC sheathed overall pattern to BS 5467 600/1000 volt grade 2, 3 or 4 core type as required. 2.03.03 Cables in Conduit or Trunking Conduits shall be wired using cables of 600/1000 volt grade of sizes as specified with minimum size 1.5mm2 CSA of polyvinyl chloride (PVC) insulated to BS 6004. Cables installed in Boiler Rooms and other areas with ambient temperatures above 40°C shall be elastomerbutyl rubber insulated cables to BS 6899. These cables shall be installed only in conduits, trunking or the enclosed spaces of switchgear, equipment or apparatus unless otherwise specified and with switch distribution equipment neatly bunched and supported. The colour of the cables shall be in accordance with BS 7671, coloured sleeves shall only be used with the written approval of the Contract Administrator. Any excess insulation stripped off the for crimp lugs etc., shall be made good with insulating tapes matching with the phase of the cable. Cables shall be installed without joints, looping from one point to another with connections made only at distribution boards, ceiling roses, luminaries, switches, socket outlets etc. Cables shall be installed so that segregation is in accordance with BS 7671 and with the requirements of this specification. When drawing wire into conduits, the Contractor shall provide himself with suitable reels etc., to prevent any part of the wire being chafed, trodden upon, or accidentally damaged. All conduits and trunking systems shall be cleaned out before wiring.


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Cables shall be of stranded construction, for cables of and above 2.5mm2 CSA. All cables shall be delivered to site on drums bearing the manufacturer's name. Cables shall be terminated using one of the following methods:- a. Sweated lugs of the appropriate size of the cable used b. Compression type lug c. Pinch screw type terminals of a type that do not spread the conductors. d. Clamp type terminals At terminals the cable insulation shall be stripped back without damage to conductor stands. Tightly twist together before inserting two or more conductors and arrange sufficient length for future reconnection should the first break away. Bare conductors are not to project beyond any insulated shrouding or mounting of a live terminal. Make connections between cables and flexible cords to internal fittings wiring with porcelain shielded connectors having two pinching screws for each cable core. Where there is a high working temperature at a termination only heat resisting cables shall be used which operate within the maximum temperature likely to occur at the termination. 2.03.04 PVC Insulated and Sheathed System PVC insulated and PVC sheathed systems shall mean multicore cables, incorporating an earth continuity conductor, and complying in all respects with the current edition of BS 6004-600 volt grade. The whole of the final circuit wiring of this system shall be carried out on the 'loop in' principle and all cables shall be installed in accordance with the relevant clauses of BS 7671 and as further detailed in this Specification. All cables shall be run directly off reels and not taken from loose coils. All cables shall be installed wherever possible in the ceiling voids, wall chases, preformed ducts or as otherwise specified. Cables in the ceiling spaces and roof voids shall be run parallel with or at right angles to the beams and ceiling joists. When run between joists the cables shall be fully supported. If it is necessary to cross a joist, the joist shall be drilled in the neutral plane 150mm from the point of support and in strict compliance with BS 7671, the cable shall be installed at a depth of 50mm to prevent damage by nails or mechanically protected by the equivalent of heavy steel conduit. The notching of joists will not be permitted. All cables shall be continuous between definite terminal points, joints being made only in the terminals of the fittings, accessories or switch gear. The use of joint boxes will not be permitted under any circumstances. At all lighting points the contractor shall supply and securely fix a standard B.E.S.A. round box. At all switch and socket outlets not forming part of a miniature PVC trunking system, the Contractor shall supply and securely fix a standard rectangular BS 1363 box completed with suitable connection to the protective conduit. Where connection blocks are necessary they shall be fixed in the accessory or lighting fitting box and shall be of an approved pattern comprising a brass barrel enclosed in a porcelain sheath. PVC sheathed or 'scruit' pattern connectors will not be permitted. Where cables terminate in metal clad accessories, bonding nipples shall be fitted to effectively grip the cable: the earth continuity conductor shall be securely clamped beneath an approved earth connection. Where water tight fittings are used, the point of entry shall be through a suitable rubber packed water tight gland. No bend in a cable shall have an internal radius less than four times the width of the cable. Where cables pass through walls or floors, or may be subject to damage or abuse, they shall be protected throughout their exposed length by means of rigid PVC conduit. These conduits shall be of a sufficient length to project 25mm above ceiling levels and/or 25mm beneath floor levels and the free ends shall be fitted with a bush.


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Where cables are sunk in a floor screed, they shall be protected by rigid PVC conduit, the free ends of which shall be fitted with bushes and the ends at metal accessory boxes, or other metal items, shall terminate direct into the box or item and be fitted with a

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