Slno 31 2012 13 Vol II Revised

8/18/2019 Slno 31 2012 13 Vol II Revised

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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation i

Specifications and Drawings Assam Power Distribution Company Limited

BIDDING DOCUMENT

FOR

CONSTRUCTION OF NEW UNMANNED 33/6.6 KV SUB-STATIONS

Design, Engineering, Manufacture, Assembly, Inspection, Testing at Manufacturer’sWorks before Dispatch, Packing, Supply, Delivery at Site, Including Insurance During

Transit, Subsequent Storage, Erection and Commissioning of Power Transformers WithAssociated Switchgears, including Supply & Erection of Substation Steel Structures,

Construction of related Civil Works

UNDER

DEPOSIT SCHEME

SPECIFICATION AND DRAWINGS

(Employer’s Requirements)

Volume - II

BID IDENTIFICATION NO.


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation ii


VOLUME-2

TECHNICAL SPECIFICATION

CONTENTS

SECTION-1 SCOPE AND GENERAL TECHNICAL CONDITIONS 1

1.1.0 INTENT OF THE SPECIFICATION 1

1.2.0 SCOPE 1

1.3.0 CONTRACTOR TO INFORM HIMSELF FULLY 2

1.4.0 SERVICE CONDITIONS 3

1.5.0 CONFORMITY WITH INDIAN ELECTRICITY RULES & OTHER LOCAL REGULATIONS: 3

1.6.0 STANDARDS 3

1.7.0 CONTRACTOR’S REQUIREMENT 4

1.8.0 ENGINEERING DATA 4

1.9.0 DRAWINGS 4

1.10.0 FINAL DRAWINGS AND DOCUMENTS 6

1.12.0 DESIGN IMPROVEMENTS 6

1.13.0 DESIGN CO-ORDINATION 6

1.14.0 DESIGN REVIEW MEETING 6

1.15.0 QUALITY ASSURANCE, INSPECTION & TESTING 7

1.16.0 EMPLOYER'S SUPERVISION 9

1.17.0 INSPECTION & INSPECTION CERTIFICATE 9

1.18.0 TYPE TEST REPORTS 101.19.0 SPARE PARTS 11

1.20.0 GUARANTEED TECHNICAL PARTICULARS 12

1.21.0 PACKING 12

1.22.0 CONSTRUCTION TOOLS, EQUIPMENTS ETC. 12

1.23.0 MATERIALS HANDLING AND STORAGE 13

1.24.0 CONTRACTOR’S MATERIALS BROUGHT ON TO SITE 13

1.25.0 COMMISSIONING SPARES 14


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation iii


ANNEXURE–I SCHEDULE OF QUANTITY (SUPPLY) 15

ANNEXURE–II SCHEDULE OF QUANTITY (ERECTION) 22

ANNEXURE–III SCHEDULE OF QUANTITY (MANDATORY SPARES) 28

SECTION-2 TECHNICAL SPECIFICATION FOR CONSTRUCTIONWORKS IN SUBSTATIONS 29

2.1.0 GENERAL 29

2.2.0 GEO-TECHNICAL INVESTIGATION 29

2.3.0 SCOPE OF WORK 29

2.4.0 SITE PREPARATION 30

2.5.0 SURFACE PREPARATION AND STONE SPREADING 30

2.6.0 SITE DRAINAGE 31

2.7.0 TRANSFORMER FOUNDATION AND OIL RECOVERY SYSTEM 31

2.8.0 CABLE TRENCHES 32

2.9.0 FOUNDATION AND RCC CONSTRUCTION 32

2.10.0 SECURITY FENCING, GATES AND SECURITY BOOTH 35

2.11.0 SUBMISSION 36

2.12.0 BUS BARS AND BUS BAR SUPPORTS 37

2.13.0 ACSR CONDUCTORS 37

2.14.0 ELECTRICAL CLEARANCES 38

2.15.0 EARTHING SYSTEM 38

2.16.0 PROTECTION AGAINST DIRECT LIGHTNING 40

2.17.0 INSULATORS AND HARDWARE FITTINGS 40

2.18.0 CLAMPS, CONNECTORS AND SPACERS 42

2.19.0 ILLUMINATION SYSTEM 42

2.20.0 STATION SERVICE SUPPLY 43

2.21.0 FIRE FIGHTING EQUIPMENT 43

2.23.0 SUBSTATION T & P 44

SECTION – 3 SPECIFICATION FOR DESIGN AND FEBRICATION 45OF SUBSTATION STRUCTURES

3.1.0 SCOPE 45


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation iv


3.2.0 MATERIALS 45

3.3.0 DESIGN PARAMETERS 46

3.4.0 DESIGN DRAWINGS 48

3.5.0 ACCESSORIES 48

3.6.0 FABRICATION 48

3.7.0 GALVANIZING AND PAINTING 48

3.8.0 EARTHING 48

3.9.0 TEST AND TEST CERTIFICATE 49

SECTION-4 TECHNICAL SPECIFICATION FOR POWER TRANSFORMERS 50

4.1.0 SCOPE 50

4.2.0 BIDDING 50

4.3.0 SPECIFIC TECHNICAL REQUIREMENTS (STANDARD CONDITIONS) 50

4.4.0 PERFORMANCE: 52

4.5.0 AUXILIARY POWER SUPPLIES: 52

4.6.0 DRAWINGS INCORPORATING THE FOLLOWING PARTICULARS SHALL BE SUBMITTEDWITH THE BID: 52

4.7.0 SPARE PARTS: 53

4.8.0 WARRANTY 53

4.9.0 GUARANTEES 53

4.10.0 MISCELLANEOUS 54

4.11.0 NAME PLATE 55

4.12.0 GENERAL TECHNICAL REQUIREMENTS 55

4.13.0 DESIGN, STANDARDIZATION AND GENERAL CONSTRUCTION FEATURES. 58

SECTION – 5 TECHNICAL SPECIFICATION OF 33 KV & 6.6 KVAUTO RECLOSER 90

5.1.0 SCOPE 90

5.2.0 APPLICABLE STANDARDS 90

5.3.0 CLIMATIC CONDITIONS 90

5.4.0 TECHNICAL DATA SHEET FOR AUTO RECLOSER 91

5.5.0 DEFINITIONS AND ABBREVIATIONS 94


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation v


5.6.0 Mounting 96

5.7.0 Bushings 96

5.8.0 Finish 96

5.9.0 Control equipment 97

5.10.1 General 97

5.11.0 Earth fault function 100

5.12.0 Sensitive earth fault (SEF) function 100

5.13.0 Auto-reclose operation parameters 101

5.14.0 Statistical measurement functions 101

5.15.0 Local control and indication: 102

5.16.0 Tele-control requirements 104

5.17.0 Local Engineering 106

5.18.0 Tele-control requirements 107

5.19.0 Communications 107

5.20.05.22.0 Power supplies 109

5.21.0 Maintenance and commissioning 110

5.22.0 Rating plate 110

5.23.0 Additional information 111

5.24.0 TESTS 112

5.25.0 PACKING/DOCUMENTATION 113

5.26.0 Documentation 113

5.27.0 SPECIAL TOOLS AND TACKLES 113

SECTION - 6 TECHNICAL SPECIFICATION OF OUTDOORCURRENT AND POTENTIAL TRANSFORMERS 114

6.1.0 SCOPE OF CONTRACT 114

6.2.0 STANDARDS 114

6.3.0 GENERAL REQUIREMENTS 114

6.4.0 COMMON MARSHALLING BOXES 115

6.5.0 TESTS 116

6.6.0 NAME PLATES 116


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation vi


6.7.0 MOUNTING STRUCTURES 116

6.8.0 SAFETY EARTHING 116

6.9.0 TERMINAL CONNECTORS 117

6.10.0 PRE-COMMISSIONING TESTS 117

6.11.0 TECHNICAL DATA SHEET FOR CURRENT AND POTENTIALTRANSFORMERS117

SECTION - 7 TECHNICAL SPECIFICATION 122FOR CONTROL AND RELAY PANELS

7.1.0 SCOPE 122

7.2.0 STANDARDS 122

7.3.0 TYPE OF PANEL 122

7.4.0 CONSTRUCTIONAL FEATURES 122

7.5.0 MOUNTING OF EQUIPMENTS 123

7.6.08.6.0 INTERNAL WIRING 123

7.7.0 TERMINAL BLOCKS 123

7.8.0 PAINTING 124

7.9.0 NAME PLATES AND MARKINGS 124

7.10.0 MISCELLANEOUS ACCESSORIES 124

7.11.0 EARTHING 1257.12.0 RECORDING METERS (TRIVECTOR METERS) 125

7.13.0 RELAYS 131

7.14.0 PROTECTION SCHEME FOR PANELS 136

7.15.0 TESTS 137


7.17.0 TECHNICAL DATA SHEET FOR THE RELAY AND CONTROL PANELS 138

SECTION -8 140TECHNICAL SPECIFICATION OF ISOLATORS

8.1.0 SCOPE 140

8.2.0 GENERAL 140

8.3.0 DUTY REQUIREMENTS 140

8.4.0 CONSTRUCTIONAL DETAILS 141

8.5.0 EARTHING SWITCHES 142

8.6.0 OPERATING MECHANISM 142


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation vii


8.7.0 OPERATION 142

8.8.09.8.0 TEST AND INSPECTION 143

8.9.0 CONNECTORS 144

8.10.0 SUPPORTING STRUCTURES 144


8.12.0 TECHNICAL DATA SHEET FOR ISOLATORS 145

SECTION -9 147TECHNICAL SPECIFICATION FOR SURGE ARRESTORS

9.1.0 SCOPE 147

9.2.0 STANDARDS 147

9.3.010.8.0 GENERAL REQUIREMENT 147

9.4.0 ARRESTOR HOUSING 148

9.5.0Error! Reference source not found.FITTINGS & ACCESSORIES 148

9.6.0 SURGE MONITOR 148

9.7.0 TESTS 148

9.8.010.10.0 NAME PLATE 149


9.10.0 TYPE AND RATINGS 150

SECTION – 10 TECHNICAL SPECIFICATION OF BATTERY BANK AND CHARGER 152

11.1.0 SCOPE 152

11.2.0 BATTERY BANK 152

11.5.0 WATER 153

10.4.0 PLATE CONNECTION 153

10.5.0 BOLTS AND NUTS 153

10.6.0 TERMINALS 153

10.7.0 BATTERY RACKS 154

10.8.0 BATTERY CHARGING EQUIPMENTS 154

10.9.0 TESTS : 157

10.10.0 157LTAC PANEL


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation viii


SECTION - 11 159TECHNICAL SPECIFICATION OF POWER AND CONTROL CABLES

11.1.0 GENERAL REQUIREMENT 159

11.2.0 TECHNICAL REQUIREMENTS 159

11.3.0 XLPE Power Cables 160

11.4.0 PVC Power Cables 160

11.5.0 DATA SHEET FOR CABLES 161

SECTION - 12 163TECHNICAL SPECIFICATION OF 33KV & 6.6 KV XLPE

12.1.0 SCOPE 163

12.2.0 DEVIATION 163

12.3.0 : STARDARDS 163

12.4.0 ELECTRICAL CHARACTERISTICS & PERFORMANCE:- 164

12.5.0 CABLE CONSTRUCTION: 165

12.6.0 WOODEN DRUMS: 167

12.7.0 Tests to be performed as per IS:7098 (part II) 168

12.8.0 Descriptive literatures test results etc. 170

12.9.0 QUALITY ASSURANCE PLAN: 171

12.10.0 Guarantee: 171

SECTION - 13 TECHNICAL SPECIFICATION OF 6.6kV CAPACITOR BANK 172

13.1.0 172SCOPE

13.2.0 STANDARDS 172

13.3.0 CAPACITOR BANKS 172

13.4.0 CIRCUIT BREAKER 175

13.5.0 ISOLATOR AND ISOLATOR-CUM-EARTHSWTICH 175

13.6.0 CURRENT TRANSFORMERS 175

13.7.0 SERIES REACTOR 175

13.8.0 FITTINGS AND ACCESSORIES 176

13.9.0 TESTS 176

13.10.0 DATA SHEET 178


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation ix


SECTION - 14 TECHNICAL SPECIFICATION OF GALVANISED STEEL TUBULAR POLE 181

14.1.0 SCOPE 181

14.2.0 STANDARD : 181

14.3.0 Topography and Climatic Condition : 181

14.4.0 Materials : 181

14.5.0 Types, Size and construction : 181

14.6.0 Earthing Arrangements : 182

14.7.0 PRINCIPAL PARAMETERS 182

14.8.0 Tests and Test Certificates : 183

14.9.0 Marking : 183

14.10.0 Performance :- 183

14.11.0 Deviation :- 183

14.12.0 Guaranteed technical particulars : 183

SECTION - 15 TECHNICAL SPECIFICATION FOR GALVANIZED CHANNEL CROSS ARMS 184

15.1.015.1.0SCOPE : 184

15.2.0 Standards 184

15.3.0 GENERAL REQUIREMENT : 184

15.4.0 For galvanized channel : 185

15.5.015.5.0Data Sheet 186

SECTION - 16 TECHNICAL SPECIFICATION FOR DISTRIBUTION TRANSFORMER 187

16.1.0 SCOPE 187

16.2.016.2.0 BIDDING 187

16.3.0 STANDARDS 187

16.4.016.4.0GENERAL SERVICE CONDITION 188

16.5.0 GENERAL TECHNICAL SPECIFICATIONS: 189

16.6.0 SUPPRESSION OF HARMONICS 189

16.7.0 CENTRE OF GRAVITY 189


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16.8.0 GENERAL CONSTRUCTIONAL FEATURES 190

16.9.0 SURFACE PREPERATION & PAINTING 190

16.10.0 190CORE (MAGNETIC CIRCUIT) AND CONSTRUCTIONAL FEATURES OF CORE

16.11.0 WINDING 190

16.12.0 INSULATION MATERIAL: 192

16.13.0 ACCESSORIES & FITTINGS 193

16.14.0 193PROTECTION & MEASURING DEVICES

16.15.0 RADIATORS & VALVES 194

16.16.0 FITTINGS AND ACCESORIES 195

16.17.0 196LOSSES

16.18.0 CAPITALISATION OF LOSSES AND LIQUIDATED DAMAGES FOR EXCESSIVE LOSSES: 196

16.19.0 Temperature rise: 197

16.20.0 197TESTS & INSPECTION

16.21.0 197REJECTION

16.22.0 DRAWINGS and CALCULATIONS FOR SUBMISSION WITH THE BID 197

16.23.0 QUALITY ASSURANCE PLAN: 198

16.24.0 198DATA SHEET

16.25.0 GUARANTEE: 201

16.26.0 SCHEDULES: 201

16.27.0 DEVIATIONS: 202

SECTION-17 223GUARANTEED TECHNICAL AND OTHER PARTICULARS

1.0 GENERAL 223

2.0 GUARANTEED TECHNICAL PARTICULARS OF 33kV /6.6kV TRANSFORMER 225

3.0 244AUTO RECLOSER

4.0 CURRENT TRANSFORMERS (OUTDOOR) 248

5.0 POTENTIAL TRANSFORMER 252

6.0 254RTU

7.0 261CONTROL AND RELAY PANELS


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation xi


8.0 GANG OPERATED SWITCH (ISOLATORS) 266

9.0 SURGE ARRESTOR 268

10.0 BATTERY 271

11.0 BATTERY AND CHARGER 274

12.0 DC DISTRIBUTION BOARD 275

13.0 TRIVECTOR METERS (For use with Relay & Control Panels) 277

14.0 27911 KV DISC INSULATOR

15.0 GALVANIZED STEEL EARTHWIRE 280

16.0 33 kV POST INSULATOR 281

17.0 ACSR CONDUCTOR 282

18.0 33KV &11 kV CVT 285

19.0 33KV & 11 KV XLPE CABLE 286

20.0 GALVANISED STEEL TUBULAR POLE 292

21.0 DISTRIBUTION TRANSFORMER 294

SECTION-18 DRAWINGS 311


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Bidding Document for Construction of Unmanned 33/6.6 KV New Substation 1


SECTION-1

SCOPE AND GENERAL TECHNICAL CONDITIONS

1.1.0 INTENT OF THE SPECIFICATION1.1.1 This volume of the specification deals with the general technical information & criteria for

design, manufacture, supply, erection, testing & commissioning and setting to work ofconstruction of new substations on “Design, Supply and Install” basis.

1.1.2 The provisions of this section shall supplement all the detailed Technical Specifications andrequirements brought out herein. The Contractor's proposal shall be based on the use ofmaterials complying fully with the requirements specified herein.

1.2.0 SCOPE

1.2.1 The work involves design, engineering, manufacture, assembly, inspection, testing atmanufacturer’s works before dispatch, packing, supply, including insurance during transit,delivery at site, subsequent storage, civil foundation work, erection and commissioning at siteof various equipment and materials including power transformers, substation structures andcivil foundations for equipment as specified in subsequent Clauses and Sections for twonumbers unmanned sub-stations at Sadilapur and Pandu Ghat Water Supply Scheme.

1.2.2 The scopes of works also include site development, design & construction of boundary walls,fencing, gate and other facilities at substations as specified in the Bidding Document.

1.2.3 It is not the intent to specify completely herein all details of design and construction of theequipment and accessories. However, the equipment and accessories shall conform in allrespects to high standards of engineering, design and workmanship and be capable ofperforming in continuous operation up to the bidder’s guarantees in a manner acceptable to theEmployer. The Employer will interpret the meaning of drawings and specifications and shall beentitled to reject any work or material, which in his judgement is not in full accordancetherewith.

1.2.4 Whether called for specifically or not, all accessories and work required for the completion of

the work are deemed to be considered as a part of the Bidder’s scope, unless and untilmentioned very clearly as excluded.

1.2.5 The major items of works included in the scope of this specification are listed below:-

i) Supply, erection, testing and commissioning of transformers and all switch & controlgears such as circuit breakers, isolators, current transformers, relay & control panels,Lightning Arresters etc including mounting structures and civil foundations as specified inBill of Materials.

ii) Supply, erection, testing and commissioning of Substation local Communication

Equipment as specified in Bidding Document.


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iii) Design, supply and erection of substation structure.

iv) Design and construction of cable trenches and earth mat including supply of all materials.

v) Other works includes site development, construction of Boundary Walls / Security

Fencing, Design and installation of illumination system for switchyard etc as brought outin the Specification and Schedule of Requirements.

1.2.6 The name of substation that is to be built under the scope of this specification is listed below:

i) Sadilapur, 2 x 6.3 MVA, 33/6.6 kV and 2x1.5MVA, 33/0.433kV Substation (Guwahati,Assam)

ii) Pandu Ghat, 2 x 1.6 MVA, 33/6.6 kV and 2x250 KVA, 33/0.433kV Substation(Guwahati, Assam)

1.2.7 The various items of works are described very briefly in the schedule of Bid Form, Prices &Other Schedules. The various items as defined in these schedules shall be read in conjunctionwith the corresponding section in the technical specifications including amendments and,additions if any.

1.2.8 The Bidder’s rates shall be based on the description of activities in the schedules as well asnecessary operations detailed in Technical Specifications.

1.2.9 The tentative Bill of Quantities are furnished in Annexure-I, Annexure-II and Annexure-IIIat the end of this Section. Bidders are requested to note the following points:

i)

The items mentioned in these Annexure shall only be used while preparing thePrice Schedules. If any items which is not specifically mentioned in Annexure- I

annexure-II and Annexure-III; but required to complete the works as per

Specification shall deemed to be included in any of the items of these

Annexure. Additions, deletions or modification of these items while preparing

the Price Bid by the Bidder shall render his bid non-responsive.

ii) The quantities are provisional in nature and for bidding purpose and for bid

comparison purpose only. Quantities may vary to the extent of (+) 15 % to (-)

15% in terms of total Contract Price.

1.3.0 CONTRACTOR TO INFORM HIMSELF FULLY

1.3.1 The contractor should ensure that he has examined the General Conditions, Specifications andSchedules as brought out in other sections and this Section and has satisfied himself as to allthe conditions and circumstances affecting the contract price and fixed his price according tohis own views on these matters and acknowledge that no additional allowances except asotherwise provided therein will be levied.

1.3.2 The Employer shall not be responsible for any misunderstanding or incorrect information

obtained by the contractor other than information given to the contractor in writing by theEmployer


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1.4.0 SERVICE CONDITIONS

1.4.1 The plant and materials supplied shall be suitable for operation under the following climatic andother conditions:

a) Peak ambient day temperature in still air : 45°Cb) Minimum night temperatures : 0°C

c) Reference ambient day temperature : 45°C

d) Relative Humidity a) Maximum : 100 %

b) Minimum : 10 %

e) Altitude: Below1000 M aboveMSL

f) Maximum wind pressure : As per IS: 802 latest code.

g) Other Data: Refer Meteorological data pertaining to the locations.

h) Seismic Intensity ZONE-V as per IS 1893.

1.5.0 CONFORMITY WITH INDIAN ELECTRICITY RULES & OTHER LOCAL REGULATIONS:

1.5.1 The contractor shall note that all substation works shall comply with the latest provisions ofIndian Electricity Rules and with any other regulations. Local authorities concerned in theadministration of the rules and regulation relating to such works shall be consulted, if

necessary, about the rules and regulations that may be applicable.1.5.2 The Contractor shall also comply with the Minimum Wages Act 1948 and the payment of

Wages Act (both. of the Government of India and State of Assam) and the rules made thereunder in respect of any employee or workman employed or engaged by him or his Sub-Contractor.

1.5.3 All registration and statutory inspection fees, if any, in respect of his work pursuant to thisContract shall be to the account of the Contractor. However, any registration, statutoryinspection fees lawfully payable under the provisions of the statutory laws and its amendmentsfrom time to time during erection in respect of the Substation Works, ultimately to be owned bythe Employer, shall be to the account of the Employer. Should any such inspection orregistration need to be re-arranged due to the fault of the Contractor or his Sub-Contractor, theadditional fees to such inspection and/or registration shall be borne by the Contractor.

1.6.0 STANDARDS

1.6.1 The equipment covered by this specification shall, unless otherwise stated be designed,constructed and tested in accordance with the latest revisions of relevant Indian Standards(ISS)/ IEC and shall conform to the regulations of local statutory authorities.

1.6.2 In case of any conflict between the standards and this specification, this specification shallgovern.


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1.6.3 Equipment conforming to other international or authoritative Standards which ensure equivalentor better performance than that specified under Clause 1.6.1 above shall also be accepted. Inthat case relevant extracts of the same shall be forwarded with the bid.

1.7.0 CONTRACTOR’S REQUIREMENT

1.7.1 The Contractor should be in possession of a valid H.V. Electrical Licence issued by the ChiefElectrical Inspector, Govt. of Assam, as per the provision of Law. An attested copy of theaforementioned Licence must be handed over to the Employer for his record prior to handing/taking over of sites. The Employer will assist the Contractor in obtaining the requisite licence.

1.7.2 All the works shall also be inspected by the Chief Electrical Inspector, Govt. of Assam or hisauthorised representatives. It is the responsibility of the Contractor to obtain pre-requisitecommissioning clearance of any equipment from the said Inspectorate. The Contractor will paynecessary fees to the Inspectorate, which it may levy.

1.8.0 ENGINEERING DATA

1.8.1 The furnishing of engineering data by the Contractor shall be in. accordance with the BiddingDocument. The review of these data by the Employer will cover only general conformance ofthe data to the specifications and not a thorough review of all dimensions, quantities and detailsof the materials, or items indicated or the accuracy of the information submitted. This review bythe Employer shall not be considered by the Contractor, as limiting any of his responsibilitiesand liabilities for mistakes and deviations from the requirements, specified under thesespecifications.

1.8.2 All engineering data submitted by the Contractor after review by the Employer shall or part ofthe contract document.

1.9.0 DRAWINGS AND DOCUMENTS FOR APPROVAL

1.9.1 In addition to those stipulated in clause regarding drawings in General Conditions of Contract,the following sub clauses shall also apply in respect of Contract Drawings.

1.9.2 All drawings submitted by the Contractor including those submitted at the time of Bid shall bewith sufficient detail to indicate the type, size, arrangement, dimensions, material description,

Bill of Materials, weight of each component break-up for packing and shipment, fixingarrangement required, the dimensions required for installation and any other informationspecifically requested in these specifications.

1.9.3 Each drawing submitted by the Contractor shall be clearly marked with the name of theEmployer, the specification title, the specification number and the name of the Project. All titles,noting, markings and writings on the drawing shall be in English. All the dimensions should beto the scale and in S.I. units.

1.9.4 The drawings submitted for approval to the Employer shall be in quadruplicate. One print of

such drawings shall be returned to the Contractor by the Employer marked "approved/approvedwith corrections". The contractor shall there upon furnish the Employer additional prints as may


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be required along with one reproducible in original of the drawings after incorporating allcorrections.

1.9.5 The Contractor shall perform the work strictly in accordance with these drawings and nodeviation shall be permitted without the written approval of the Employer, if so required.

1.9.6 All manufacturing, fabrication and erection work under the scope of Contractor prior to theapproval of the drawings shall be at the Contractor's risk. The contractor may make anychanges in the design which are necessary to conform to the provisions and intent of thecontractor and such changes will again be subject to approval by the Employer.

1.9.7 The approval of the documents and drawings by the Employer shall mean that the Employer issatisfied that:

a) The Contractor has completed the part of the Works covered by the subject

document (i.e. confirmation of progress of work).b) The Works appear to comply with requirements of Specifications.

In no case the approval by the Employer of any document does imply compliance with neither

all technical requirements nor the absence of errors in such documents. If errors are discovered

any time during the validity of the contract, then the Contractor shall be responsible of their

consequences.

1.9.8 All drawings shall be prepared using AutoCAD software version 2000 or later only. Drawings,which are not compatible to AutoCAD software version 2000 or later, shall not be acceptable.

After final approval all the drawings shall be submitted to the Employer in readable CD’s1.9.9 The following is the general list of the documents and drawings that are to be approved by the

Employer:

a) Work Schedule (Master Network) Plan with linkages prepared on latest version ofMicrosoft Projects.

b) General Layout of Switchyard: Plan and Sections.

c) Earthing layout and details.

d) Cable Trench Layout and details.e) Foundation layouts and details of main and auxiliary structures

f) Detail design calculations and drawings for structures, equipment supports andfoundations including transformer pad.

g) Cable Schedule, as applicable

h) For equipment and items in the scope of supply:

i) General arrangement drawing with full dimensions.

ii) Electrical schematic diagram, where applicable.

iii) Wiring diagram, where applicable.


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iv) Architecture of local Automation System.

1.9.10 All Designs / Drawings / Calculations/ Data submitted by the contractor, from time to time shallbecome the property of the Employer and Employer has the right to use or replicate suchdesigns for future contracts / works without the permission of the Contractor. The Employer has

all rights to use/ offer above designs/drawings/data sheets to any other authority without priorPermission of the Contractor.

1.10.0 FINAL DRAWINGS AND DOCUMENTS

1.10.1 The successful Contractor shall require to provide following drawings and documents for eachsubstations in printed form:

(a) All approved drawings (AS BUILD) of equipment and works related to a particularsubstation in three (3) copies.

(b) Instruction manuals of all equipment related to a particular substation in three (3)copies. These instruction manuals shall generally consist of (i) Operation Manuals,(ii) Maintenance Manuals and (iii) Spare Parts Bulletins.

(c) Copies of routine test reports (in triplicate) of relevant equipment.

(d) Final Guaranteed and Other technical particulars of relevant equipment.

1.10.2 In addition to the above the Contractor shall provide five (5) sets of all the drawings anddocuments to Employer in printed form for his reference and record.

1.11.0 APPLICATION AND SYSTEM SOFTWARE

1.11.1 Contractor shall provide copies of licenced copies application software / configuration & systemsoftware in the form of CD (in duplicate) for all IEDs, meters, etc.

1.12.0 DESIGN IMPROVEMENTS

1.12.1 The Employer or the Contractor may propose changes in the specification and if the partiesagree upon any such changes and the cost implication, the specification shall be modifiedaccordingly.

1.13.0 DESIGN CO-ORDINATION

1.13.1 Wherever, the design is in the scope of Contractor, the Contractor shall be responsible for theselection and design of appropriate material/item to provide the best co-ordinated performanceof the entire system. The basic design requirements are detailed out in this Specification. Thedesign of various components, sub-assemblies and assemblies shall be so done that itfacilitates easy field assembly and maintenance.

1.14.0 DESIGN REVIEW MEETING

1.14.1 The contractor will be called upon to attend design review meetings with the Employer, and the

consultants of the Employer during the period of Contract. The contractor shall attend suchmeetings at his own cost at Assam or at mutually agreed venue as and when required. Such


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review meeting will be held generally minimum once a month or the frequency of these meetingshall be mutually agreed between the Employer and the Contractor. Frequency of DesignReview Meetings shall depend upon the project requirement to ensure project implementationas per the Master Programme.

1.15.0 QUALITY ASSURANCE, INSPECTION & TESTING

1.15.1 Quality Assurance

The bidder shall invariably furnish the following information along with his offer failing which theoffer shall be liable for rejection. Information shall be separately given for individual type ofequipment offered.

i) The structure of organization

ii) The duties and responsibilities assigned to staff ensuring

quality of workiii) The system of purchasing, taking delivery and verification of

materials

iv) The system for ensuring quality of workmanship

v) The quality assurance arrangements shall confirm to the relevant requirement of ISO9001 on ISO 9002 as applicable.

vi) Statement giving list of important raw materials, names of sub-supplies for the rawmaterials, list of standards according to which the raw material are tested, list of tests

normally carried out on raw material in the presence of suppliers representative, copiesof test certificates.

vii) Information and copies of test certificates as on (i) above in respect of bought out items

viii) List of manufacturing facilities available

ix) Level of automation achieved and list of areas where manual processing exists.

x) List of areas in manufacturing process, where stage inspections are normally carried outfor quality control and details of such test and inspection.

xi) List of testing equipment available with the bidder for final testing of equipment specifiedand test plant limitation, if any vis-à-vis the type. Special acceptance and routine testsspecified in the relevant standards. These limitations shall be very clearly brought out in"Schedule of Deviations" from the specified test requirement.

1.15.2 The contractor shall within 30 days of placement of order, submit the following information tothe purchaser.

i) List of the raw material as well as bought out accessories and the names of subsuppliersselected from those furnished along with the offer.

ii) Type test certificated of the raw material and bought out accessories if required by thepurchaser.


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iii) Quality Assurance Plant (QAP) with hold points for purchasers inspection. QAP andpurchasers hold points shall be discussed between the purchaser and contractor beforethe QAP is finalized.

The contractor shall submit the routine test certificates of bought out accessories and

central excise asses for raw material at the time of routine testing if required by thepurchaser and ensure that the quality assurance requirements of specification are

followed by the sub-contractor.

1.15.3 The Quality Assurance Programme shall give a description of the Quality System and QualityPlans with the following details.

i) Quality System

• The structure of the organization.

• The duties and responsibilities assigned to staff ensuring quality of work.

• The system of purchasing, taking delivery of verification of materials

• The system of ensuring of quality workmanship.

• The system of control of documentation.

• The system of retention of records.

• The arrangement of contractor internal auditing .

• A list of administrator and work procedures required to achieve contractors

quality requirements. These procedures shall be made readily available to the purchaserfor inspection on request.

ii) Quality Plans

• An outline of the proposed work and program sequence .

• The structure of contractor’s organizations for the contract.

• The duties and responsibilities ensuring quality of work.

• Hold and notification points.

• Submission of engineering documents required by this specification.

• The inspection of the materials and components on request.

• Reference to contractors work procedures appropriate to each activity.

• Inspection during fabrication /construction.

• Final inspection and test.

1.15.4 Training of Personnel


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The contractor shall provide necessary facilities for training personnel at their works/principalsworks relating to design, manufacture, assembly and testing and operation maintenance forfour personnel free of cost. However, travel and incidental charges of the personnel will beborne by the purchaser.

The contractor shall provide 15 days hands on training for operation and maintenance ofsubstation for four personnel free of cost against each substation prior to handing over ofsubstation to employer.

1.16.0 EMPLOYER'S SUPERVISION

1.16.1 To eliminate delays and avoid disputes and litigation it is agreed between the parties to theContract that all matters and questions shall be resolved in accordance with the provisions ofthis document.

1.16.2 The manufacturing of the product shall be carried out in accordance with the specifications. Thescope of the duties of the Employer, pursuant to the contract, will include but not be limited tothe following.

a Interpretation of all the terms and conditions of these Documents and Specifications.

b Review and interpretation of all the Contractors drawings, engineering data etc.

c Witness or authorize his representative to witness tests at the manufacturer’s works or atsite, or at any place where work is performed under the contract.

d Inspect, accept or reject any equipment, material and work under the Contract, inaccordance with the Specifications.

e Issue certificate of acceptance and/or progressive payment and final payment certificate.

f Review and suggest modification and improvement in completion schedules from time totime, and

g Supervise the Quality Assurance Programme implementation at all stages of the works.

1.17.0 INSPECTION & INSPECTION CERTIFICATE

1.17.1 The Employer, his duly authorized representative and/or outside inspection agency acting onbehalf of the Employer shall have, at all reasonable times, access to the premises and works of

the Contractor and their sub-contractor(s)/sub-vendors and shall have the right, at thereasonable times, to inspect and examine the materials and workmanship of the product duringits manufacture.

1.17.2 All routine and acceptance tests whether at the premises or works of, the Contractor or of anySub-Contractor, the Contractor except where otherwise specified shall carry out such tests freeof charge. Items such as labour, materials, electricity, fuel, water, stores apparatus andinstruments as may be reasonably demanded by the Employer/inspector or his authorizedrepresentative to carry out effectively such tests in accordance with the Contract shall beprovided by the Contractor free of charge.


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1.17.3 If desired by the Employer, the Contractor shall also carry out type tests as per applicableStandards for which Employer shall bear the expenses except in cases where such tests haveto be carried out in pursuance to Clause 1.18.3. The Contractor is required to quote unit ratesof type test charges in a separate Schedule (if such schedule is provided in the Bidding

Document) in pursuance to this Clause. However, these type test charges shall not be takeninto account in comparing Price Bid.

1.17.4 The inspection by Employer and issue of Inspection Certificate thereon shall in no way limit theliabilities and responsibilities of the Contractor in respect of the agreed Quality AssuranceProgramme forming a part of the Contract.

1.17.5 Tests

The type, acceptance and routine tests and tests during manufacture to be carried-out on thematerial and equipment shall mean as follows:

i) Type Tests shall mean those tests, which are to be carried out to prove the process ofmanufacture and general conformity of the material to this Specification. These tests shallbe carried out on samples prior to Commencement of commercial production against theorder. The Bidder shall indicate his schedule for carrying out these tests.

ii) Acceptance Tests shall mean those tests, which are to be carried out on samples takenfrom each lot offered for pre-dispatch inspection, for the purposes of acceptance of thatlot.

iii) Routine Tests shall mean those tests, which are to be carried out on the material to checkrequirements, which are likely to vary during production.

iv) Tests during manufacture shall mean those tests, which are to be carried out during theprocess of manufacture and end inspection by the Contractor to ensure the desired qualityof the product to be supplied by him.

v) The norms and procedure of sampling for these tests will be as per the Quality AssuranceProgramme to be mutually agreed to by the Contractor and the Employer.

1.17.6 The standards and norms to which these tests will be carried out are specified in subsequentSections of this Specification. Where a particular test is a specific requirement of thisSpecification, the norms and procedure of the test shall be as specified or as mutually agreed

to between the Contractor and the Employer in the Quality Assurance Programme.

1.17.7 For all type and acceptance tests, the acceptance values shall be the values specified in thisSpecification or guaranteed by the Bidder or applicable Standards, as applicable.

1.18.0 TYPE TEST REPORTS

1.18.1 Equipment, which has never been tested for critical performance, shall not be accepted.In such cases, a promise or agreement by a bidder to have the equipment tested after awardof a contract is not acceptable.


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1.18.2 All Bids must be accompanied by the Type Test Certificates of equipment offered (refer Clause1.18.5 below). Such type test certificates shall be acceptable only if:-

(a) Tests are conducted in CPRI, ERDA and KEMA laboratory, or

(b) Tests are conducted in manufacturer’s own laboratory. In this case (i) thelaboratory must have NABL accreditation and ISO 9000 (or its equivalent) seriescertification; and (ii) tests have been witnessed by technically qualifiedrepresentatives of Indian Power Distribution utilities.

1.18.3 Test reports to be acceptable must be related directly to the equipment offered i.e. it isfully identical in design, rating and construction with the equipment for which the typetest certificates have been submitted.

1.18.4 Type Test Reports older than three (3) years on the date of Technical bid opening shallnot be accepted.

1.18.5 Full Type Test Reports of at least the following equipment must be submitted along withthe Bid: -

1. Transformers

2. Auto Reclosers

3. Current & Potential Transformers

4. Capacitor bank

5. Lightening Arrester

6. Isolators

7. Numerical Relays

8. Gateways & Data concentrators

9. XLPE Power cable & Control cable

10. Battery & Battery Charger

1.18.6 This clause has reference to bid document of other sections, ‘Evaluation andQualification Criteria’.

1.19.0 SPARE PARTS

1.19.1 Recommended Spare Parts

The Bidder shall also furnish an item wise list of recommended spare parts and quantity forthree years satisfactory operation of the equipment with unit price of each part in a separateSchedule. Prices of these spare parts shall not be taken in to account in comparing Price Bid

Also, they will submit an undertaking to supply all spare parts for a minimum period of 10 (ten)years as and when any request is made before them on a chargeable basis.


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1.19.2 Mandatory Spare Parts

The Bidder shall also quote for the mandatory spares list of which is furnished in ‘List ofMandatory Spare Part (Annexure-III of this Section). Prices of these spare parts shall be takeninto account in comparing price Bid.

1.20.0 GUARANTEED TECHNICAL PARTICULARS

1.20.1 The Guaranteed Technical Particulars of the various items shall be furnished by the Bidders inthe prescribed schedules of this Specification

1.20.2 ) with the Technical Bid. The Bidder shall also furnish any other information's as in theiropinion is needed to give full description and details to judge the item(s) offered by them.

1.20.3 The data furnished in Guaranteed Technical Particulars should be the minimum or maximumvalue (as per the requirement of the specification) required. A Bidder may guarantee a value

more stringent than the specification requirement. However, for testing purpose or fromperformance point of view, the material shall be considered performed successfully if itachieves the minimum/maximum value required as per the technical specification. Nopreference what so ever shall be given to the bidder offering better/more stringent values thanthose required as per specification except where stated otherwise.

1.21.0 PACKING

1.21.1 All the materials shall be suitably protected, coated, covered or boxed and crated to preventdamage or deterioration during transit, handling and storage at Site till the time of erection. The

Contractor shall be responsible for any loss or damage during transportation, handling andstorage due to improper packing.

1.21.2 The Contractor shall include and provide for securely protecting and packing the materials soas to avoid loss or damage during transport by air, sea, rail and road.

1.21.3 All packing shall allow for easy removal and checking at site. Wherever necessary, properarrangement for attaching slings for lifting shall be provided. All packages shall be clearlymarked for with signs showing 'up' and 'down' on the sides of boxes, and handling andunpacking instructions as considered necessary. Special precaution shall be taken to prevent

rusting of steel and iron parts during transit by sea.

1.21.4 The cases containing easily damageable material shall be very carefully packed and markedwith appropriate caution symbols, i.e. fragile, handle with care, use no hook etc. whereverapplicable.

1.21.5 Each package shall be legibly marked by the-Contractor at his expenses showing the detailssuch as description and quantity of contents, the name of the consignee and address, the grossand net weights of the package, the name of the Contractor etc.

1.22.0 CONSTRUCTION TOOLS, EQUIPMENTS ETC.


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1.22.1 The Contractor shall provide all the construction equipment, tools, tackle and scaffoldingsrequired for construction, erection, testing and commissioning of the works covered under theContract. He shall submit a list of all such materials to the Employer before the commencementof work at site. These tools and tackle shall not be removed from the site without the written

permission of the Employer.1.23.0 MATERIALS HANDLING AND STORAGE

1.23.1 All the supplies under the Contract as well as Employer supplied items (if any) arriving at siteshall be promptly received, unloaded and transported and stored in the stores by theContractor.

1.23.2 Contractor shall be responsible for examining all the shipment and notify the Employerimmediately of any damage, shortage, discrepancy etc. for the purpose of Employer'sinformation only. The Contractor shall submit to the Employer every week a report detailing all

the receipts during the week. However, the Contractor shall be solely responsible for anyshortages or damages in transit, handling and/or in storage and erection at site. Anydemurrage, and other such charges claimed by the transporters, railways etc., shall be to theaccount of the Contractor.

1.23.3 The Contractor shall maintain an accurate and exhaustive record-detailing out the list of allitems received by him for the purpose of erection and keep such record open for the inspectionof the Employer.

1.23.4 All items shall be handled very carefully to prevent any damage or loss. The materials stored

shall be properly protected to prevent damage. The materials from the store shall be moved tothe actual location at the appropriate time so as to avoid damage of such materials at Site.

1.23.5 All the materials stored in the open or dusty location must be covered with suitable weather-proof and flameproof covering material wherever applicable.

1.23.6 The Contractor shall be responsible for making suitable indoor storage facilities, to store allitems/materials, which require indoor storage.

1.23.7 The Contractor shall have total responsibility for all equipment and materials in his custody,stored, loose, semi-assembled and/or erected by him at site. The contractor shall make suitable

security arrangements including employment of security personnel to ensure the protection ofall materials, equipment and works from theft, fire, pilferage and any other damages and loss.

1.24.0 CONTRACTOR’S MATERIALS BROUGHT ON TO SITE

1.24.1 The Contractor shall bring to Site all equipment, components, parts, materials, includingconstruction equipment, tools and tackles for the purpose of the work under intimation to theEngineer. All such goods shall, from the time of their being brought vest in the Employer, butmay be used for the purpose of the Works only and shall not on any account be removed ortaken away by the Contractor without the written permission of the Engineer. The Contractorshall nevertheless be solely liable and responsible for any loss or destruction thereof anddamage thereto.


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1.24.2 The Employers shall have a lien on such goods for any sum or sums, which may at any time,be due or owing to him by the Contractor, under in respect of or by reasons of the Contract.After giving a fifteen (15) days notice in writing of his intention to do so, the Employer shall beat liberty to sell and dispose off any such goods, in such manner, as he shall think fit including

public auction or private treaty.1.24.3 After the completion of the Works, the Contractor shall remove from the Site under the direction

of the Engineer the materials such as construction equipment, erection tools and tackles,scaffolding etc. with the written permission of the Engineer. If the Contractor fails to removesuch materials within fifteen (15) days of issue of a notice by the Engineer, the Engineer shallhave the liberty to dispose of such materials as detailed under clause 1.24.2 above and creditthe proceeds thereto to the account of the Contractor.

1.25.0 COMMISSIONING SPARES

1.25.1 It will be the responsibility of the Contractor to provide all commissioning spares required forinitial operation till the Employer declares the equipment as ready for commissioning. Allcommissioning spares shall be deemed to be included in the scope of the Contract at no extracost to the Employer.

1.25.2 These spares shall be received and stored by the Contractor at least 3 months prior to theschedule date of commencement of commissioning of the respective equipment and utilized asand when required. The unutilised spares and replaced parts, if any, at the end of successfulcompletion of performance and guarantee test shall be the property of the Contractor and hewill be allowed to take these parts back at his own cost with the permission of Employer’s

Representative.


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Bidding Document for Construction of 33/11 kV Un-manned New Substations 15

Specifications and Drawings Assam Power Distribution Company Ltd.

ANNEXURE–I

SCHEDULE OF QUANTITY (SUPPLY)

(Note: Items and Sub items shown in this Annexure shall only be used in preparing Price Bidding

Schedules. Any other items not specifically mentioned here under are Deemed to be included in

other Items)

Sl.

No.

Description of

Items

Unit of

Measurement

Substation wise Provisional Quantities

33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

1.0 Power Transformers

(i) 33/6.6 kV, 6.3 MVA No 2 0

(ii) 33/6.6kV,1.6 MVA No 0 2

(iii) 33/0.433 kV, 0.25 MVA No 0 2

(iv) 33/0.433kV, 1.6 MVA No 2 0

2.0 Auto Reclosers/VCB with GI mountingstructures (Channels)

(i) 36 kV Auto Recloser with SF6 insulatingmedia with modem, RTU etc

No. 2 2

(ii) 36 kV Pole mounted VCB with SF6 insulating media, inbuilt modem, RTU etc

4 4

(iii) 7.2 kV pole mounted VCB withcommunication modem, RTU etc.

No. 6 6

3.0 Control & Relay Panel

i) For 33/6.6 kV Transformer Panel No. 4 2

ii) (iv) 6.6kV Capacitor bank Panel No 2 2

4.0 Current Transformers with GI mountingstructure (Channels)


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Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

(i) 33 kV, 400-200/1-1 Line CT No 6 6

(ii) 33 kV, 100/1-1-1 A Transformer CT No 6 0

(iii) 33 kV, 30/1-1 A Transformer CT No 6 6

(iv) 6.6 kV, 500/1-1 A Transformer CT No 6 0

(v) 6.6 kV, 100/1-1 A Transformer CT No 0 6

(vi) 6.6 kV, 500/1A Neutral CT (REF Prot) No 2 0

(vii) 6.6 kV, 100/1A, Neutral CT (REF Prot) No 0 2

5.0 Voltage Transformer with GI mountingstructure

(i) 33 kV, 33/√3 / 110/√3 No (1 ϕ) 6 6

(ii) 6.6 kV, 6.6/√3 / 6.6/√3 No (1 ϕ) 6 6

6.0 Isolators with GI mounting structures(Channels)

(i) 33 kV With Single Earth Switch and GIMounting Structure

Set. 2 2

(ii) 33 kV Isolator with GI Mounting Switch Set. 7 7

(iii) 6.6 kV Isolator with GI Mounting Switch Set. 7 7

(iv) 6.6 kV GOAB switch with GI mountingStructure

Set. 0 0

7.0 Lightning Arrester with GI mountingstructures (Channels)

(i) 33 kV Lightning Arrester with Surge

Monitor and GI mounting Structure

Nos. 18 18


28/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

(ii) 6.6 kV Lightning Arrester with MountingStructure

Nos. 24 24

8.0 Insulator with GI mounting structures(Channels)

(i) 33 kV Post insulator with GI Mountingstructures

Nos. 18 18

(ii) 11 kV Bus Post Insulator with GIMounting Structure

Nos. 18 18

(iii) 33kV Pin Insulator with GI Pin and FixingGI channel

No 18 18

(iv) 11kV Pin Insulator with GI Pin and FixingGI channel

18 18

9.0 Rigid Bus

(i) 50 mm IP aluminium tube (current density1.0A/mm2) for 33kV bus

Mtr 75 110

(ii) 75 mm IP aluminium tube (current density1.0A/mm2) for 33kV bus

Mtr 35 0

(iii) Connectors for 50 mm IP tube No 6 12

(iv) Connectors for 75 mm IP tube No 6

(V) Clamps for 50 mm IP tube No. 12 24

(vi) Clamps for 75 mm IP tube No 12 0

10.0 Polymer Insulator

33kV 90KN Polymer Tension rod withHardware fittings

Set 6 6


29/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

11.0 48 Volt Station Battery, Charger, DCDBand LTAC Panel as per

specification1

Set 1 1

12.0 SP-76, Galvanized Steel

Tubular/Octagonal Pole withlightning spikes (2Mtr long, 25 mmdia GI pipe)

Nos 19 19

13.0 Channel Cross arm

(i) 100x50x6, GI Channel X arm Mtr 60 60

(ii) 250x250x6 GI Channel for 33kV &6.6kV PT structure

Mtr 0 0

(iii) 75 x 6 angle cross arm for bracing Mtr 60 60

14.0 Supply of 1.1kV XLPE Power Cables

(i) Single-Core, 1000 sq mm Mtr 0 0

(ii) Single –core, 240 sq mm Mtr 0

(iii) 2-core, 6 mm2 Mtr 60 60

(iv) 3½-core 150 mm2 Mtr 150 150

15.0 Earthing Materials for Earth Mat


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Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

(i) 40 mm, 3M Perforated GI earth pipe Nos. 56 56

(ii) 600x600x5 copper earth plate fortransformer neutral

Nos 8 8

(iii) 65x12 GI earth conductor strip Mtr 400 400

16.0 33kV XLPE Cable & cable end terminationKit

(i) 33kV, 1C-630 mm2 Metre 100 100

(ii) 1C - 120 mm2 Metre 0 0

(iii) 1C-95 mm2 Mtr 0 0

(iv) Cable end termination for 1C-630

mm2 cable

No 16 16

(v) Cable end termination for 1C-120mm2 cable

No 0

(vi) Cable end termination for 1C-95 mm2 cable

0 0

17.0 6.6kV XLPE Cabl & end termination kit Metre

(i)

1 C, 500 mm2 Metre 300

(ii) 1 C, 240 mm2 Metre 300

(iii) Cable end termination for 1C-500mm2 cable

No 22

(iv) Cable end termination for 1C-240mm2 cable

No 14

18.0 Control Cables

(i) 4C, 2.5 mm2 Metre 300 250


31/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

(ii) 7C, 2.5 mm2 Metre 200 150

19.0 Supply of ACSR Conductor 400

(i) ACSR Wolf KM 0.50 0.50

20.0 Supply of Substation Control SystemEquipment as per specification.

(i) Control & Maintenance HMI (DRWorkstation)

Set 1 1

(ii) Work Station Lap top Set 1 1

(iii) All other accessories, furniture forHMIs , cables etc.

LS 1 1

21.0 Fire Fighting Equipment as per Clause2.21.0, Volume 2

Lot 1 1

22.0 Furniture and Fixtures as per Clause2.22.0, Volume 2

Lot 1 1

23.0 Tools & Plants with computer as perspecification as per Clause 2.23.0,Volume 2

Set 1 1

24.0 6.6 kV capacitor banks with GI mountingStructures Set 2 2

25.0 ACB & MCCB including lugs

(i) 3200A, 433V, 4-pole ACB with E/F &O/C

No. 2 0

(ii) 400A, 433V, 4-pole MCCB with E/F &O/C

No. 0 2

26.0 Switchyard lighting with, lighting fixtures


32/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV;

33/0.433 kV

SADILAPUR S/S

33/6.6 KV ;

33/0.433 kV

PANDUGHAT S/S

I II III 1 2

(i) 125W, 240V, outdoor LED light setwith fixing clamps

Set 4 4


33/325



ANNEXURE–II

SCHEDULE OF QUANTITY (ERECTION)

(Note: Items and Sub items shown in this Annexure shall only be used in preparing Price Bidding

Schedules. Any other items not specifically mentioned here under are

Deemed to be included in other Items)

Sl.

No.

Description of

Items

Unit of

Measurement

Substation wise ProvisionalQuantities

33/6.6 kV &

33/0.433kV

SADILAPUR S/S

33/6.61 KV &

33/0.433kV

PANDUGHATS/S

1.0 Erection, testing & commissioning of PowerTransformers and laying & terminating allsignalling and control cables.

i) 33/6.6 kV, 6.3 MVA No 2 0

ii) 33/6.6kV,1.6 MVA No 0 2

iii) 33/0.433 kV, 0.25 MVA No 0 2

iv) 33/0.433kV, 1.6 MVA No 2 0

2.0 Construction of Transformer pad includingsupply of all foundation materials & Labour

i) 33/6.6 kV, 6.3 MVA No 2 0

ii) 33/6.6kV,1.6 MVA No 0 2

iii) 33/0.433 kV, 0.25 MVA No 0 2

iv) 33/0.433kV, 1.6 MVA No 2 0

3.0 Construction of Transformer Fire protection wallincluding supply of all foundation materials &Labour

No 1 1


34/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV &

33/0.433kV

SADILAPUR S/S

33/6.61 KV &

33/0.433kV

PANDUGHATS/S

4.0 Erection, testing & commissioning of VCB/AutoReclosers including terminations and laying &terminating of LT power and control cables asrequired and control unit

i) 36 kV Auto Recloser with SF6 insulatingmedia with modem, RTU etcNo. 2 2

ii) 36 kV Pole mounted VCB with SF6insulating media, inbuilt modem, RTU etc

No 4 4

iii) 7.2 kV pole mounted VCB withcommunication modem, RTU etc.

No. 6 6

5.0 Erection, testing & commissioning of Control &Relay Panels including laying & terminating of

LT power and control cables as required

i) For 33/6.6 kV Transformer Panel No. 4 2

ii) 6.6kV Capacitor bank Panel No 2 2

6.0 Erection, testing & commissioning of Currenttransformers including laying & terminating ofcontrol cables as required

i) 33kV, 400-200/1-1, Line CT No 6 6

ii) 33 kV, 100/1-1-1 A Transformer CT No 6 0

iii) 33 kV, 30/1-1 A Transformer CT No 6 6

iv) 6.6 kV, 500/1-1 A Transformer CT No 6 0

v) 6.6 kV, 100/1-1 A Transformer CT No 0 6

vi) 6.6 kV, 500/1A Neutral CT (REF Prot) No 2 0

vii) 6.6 kV, 100/1A, Neutral CT (REF Prot) No 0 2


35/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV &

33/0.433kV

SADILAPUR S/S

33/6.61 KV &

33/0.433kV

PANDUGHATS/S

7.0 Foundation erection, testing & commissioning ofVoltage Transformers including laying controlcables as required

(i) 33 kV, (33/√3) / (110/√3) VT No (1 ϕ) 6 6

(ii) 6.6 kV, (11/√3) / (110/√3) VT No (1 ϕ) 6 6

8.0 Erection, testing & commissioning of Isolatorsincluding laying & terminating control cables asrequired

(i) 33 kV With Single Earth Switch and GIMounting Structure

Set. 2 2

(ii) 33 kV Isolator with GI Mounting Switch Set. 7 7

(iii) 6.6 kV Isolator with GI Mounting Switch Set. 7 7

(iv) 6.6 kV GOAB switch with GI mountingStructure

Set. 0 0

9.0 Erection, testing & commissioning of LightningArrester

(i) 33 kV Lightning Arrester with Surge Monitorand GI mounting Structure

Nos. 18 18

(ii) 6.6 kV Lightning Arrester with MountingStructure

Nos. 24 24

10.0 Erection, testing & commissioning of PostInsulator, Pin Insulators

(i) 33 kV Bus Post insulator with GI Mountingstructures

Nos. 18 18

(ii) 11 kV Bus Post Insulator with GI MountingStructure

Nos. 18 18


36/325



Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV &

33/0.433kV

SADILAPUR S/S

33/6.61 KV &

33/0.433kV

PANDUGHATS/S

(iii) 33kV Pin Insulator with GI Pin and Fixing GIchannel

No 18 18

(iv) 11kV Pin Insulator with GI Pin and Fixing GIchannel

18 18

11.0 Erection, testing, commissioning of 6.6kVCapacitor bank including foundation of structure.

Set 2 2

12.0 Laying, Termination, testing & Commissioning of33kV & 6.6kV XLPE Cable

(i) Laying of 33kV, XLPE Cable LS 100 100

(ii) Laying of 6.6kV, XLPE Cable LS 300 300

(iii) End termination of 33kV cable No 32 24

(iv) End termination of 6.6kV cable No 22 14

13.0 Fitting, Fixing, clamping and T-connection of33kV Bus

(i) 50 mm IP aluminium tube for 33kV bus Lot Lot Lot

(ii) 75 mm IP aluminium tube for 33kV bus Lot Lot Lot

14.0 Erection, testing and commissioning ofBattery, Charger, DC DB & LT AC Panelincluding laying of connected cables withterminations.

No 1 1

15.0 Erection of SP 76, GI Tubular Pole includingpole grouting, fitting of Spikes:

No

(i) SP-76 pole for Substation Nos. 12 12


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Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV &

33/0.433kV

SADILAPUR S/S

33/6.61 KV &

33/0.433kV

PANDUGHATS/S

(ii) SP-76 pole for 33kV line termination Nos. 4 4

(iii) Lighting pole Nos. 3 3

16.0 Erection of 100x50x6 Channel cross arm with allclamps, nut & bolts :

L/S L/S L/S

17.0 Installation, configuration andcommissioning of Substation control Systemincluding necessary communication cable asrequired and as per specification.

LS per SS LS LS

18.0 Hoisting of insulator strings, stringing ofConductors including supply of disc insulatorstrings, clamps, connectors etc.

LS for wholeSubstation

LS LS

19.0 Installation of complete earth mat, gravelling ofswitchyard as per specification, etc and testing.

LS LS LS

20.0 Earthwork in filling, levelling, compacting,grading etc as per site condition andtechnical Specification.

(i) Supply of earth for filling Cu. M 675 675

(ii) Filling, levelling, compacting, grading etcas per site condition and technical

Specification.

Sq. M 675 675

21.0 Design and Construction of Control RoomBuilding complete with all finishes, sanitarysystem, plumbing, electrification, air conditioningetc. as per drawings and Specification. Rateshall include supply of all materials and labour.

Sq. M 45 45

22.0 Design and Construction of Security Fencingcomplete with RCC footings, beams, brick walls

etc. as per drawings and Specification. The rateshall be inclusive of all materials and labour.

Metre 105 105


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Sl.

No.

Description of

Items

Unit of

Measurement


33/6.6 kV &

33/0.433kV

SADILAPUR S/S

33/6.61 KV &

33/0.433kV

PANDUGHATS/S

23.0 Design and Construction of double leaf, heavyduty iron Security Gate with roller systemcomplete with RCC pillars, etc and with a mangate as per Specification. The rate shall beinclusive of all materials and labour.

LS LS LS

24.0 Construction of black topped service road andpavement inside switchyard area as perspecification. The rate shall be inclusive of allmaterials and labour.

Sq. Metre 82.5 82.5

25.0 Storm water drain system with sump pit as perSpecification with all materials and labour.

LS LS LS

26.0 Design and Construction of Cable Trenchesincluding supply of all materials and labour as

per specification and drawing

(i) Sand filled cable trench m 100 100

(ii) Cable trench road crossing for controlcable

No 1 1

(iii) Cable trench road crossing 6.6kV XLPEcable

No 2 2

27.0 Installation & Testing of switch yard lightingfixtures.

No. 4 4

28.0 Installation of fire fighting equipment Lot Lot Lot

29.0 Fitting, Fixing, Testing & Commissioning ofACB & MCCB

(i) 3200A, ACB No. 2 0

(ii) 400A, MCCB No 0 2


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Bidding Document for Construction of 33/6.6 kV NewUn-Manned Substations 28

Specifications and Drawings Assam Power Distribution Company Ltd

ANNEXURE–III

SCHEDULE OF QUANTITY (MANDATORY SPARES)

(Note: Items and Sub items shown in this Annexure shall only be used in preparing Price Bidding Schedules.

Any other items not specifically mentioned here under are

Deemed to be included in other Items)

Sl. No Description Quantity REMARKS

1. For 33 KV & 6.6 kV Auto Recloser Quantities are foreach kind and

each sub-station(i) Control cubicle with all accessories 1 no

(ii) Tripping Coil 5 nos

(iii) Closing Coil 5 nos

2. Control & relay panels Quantities are foreach substation

(iv) Differential relay 1 No.

(v) Master trip relay 1 No.

3. Other items Quantities are foreach substation

(i) Bus bar Clamps etc used in substation) 5 nos. of eachkind

(ii) Equipment connectors 3 nos. of eachkind


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Bidding Document for Construction of 33/6.6 kV New Unmanned Substations 29

Specifications and Drawings Assam Power Distribution Company. Ltd.

SECTION-2

TECHNICAL SPECIFICATION FOR CONSTRUCTION

WORKS IN SUBSTATIONS2.1.0 GENERAL

2.1.1 The intent of this Section of the Specification is to cover requirements which are to be followedin construction of switchyards including civil works in the switchyard.

2.1.2 The work shall be carried out according to the design/drawings to be developed by theContractor and approved by the Employer based on Drawings supplied to the Contractor by theEmployer with this specification. For all structures, foundations, etc., necessary layout anddetails shall be developed by the Contractor keeping in view the functional requirement of thesubstation facilities and providing enough space and access for operation, use andmaintenance based on the input provided (drawings and design parameters) by the Employer inthis Technical Specification. Certain minimum requirements are indicated in this Section forguidance purposes only. However, the Contractor shall quote according to the completerequirements.

2.1.3 A set of drawings are enclosed for reference of the Bidder. The drawings shall be treated as forbidding purpose only.

2.1.4 The contractor shall maintain the overall dimensions of the substation, bay length, bay width,

phase to earth clearance, phase to phase clearance, ground clearances, sectional clearances,clearances between buses and bus heights but may alter the spacing between equipmentbased on actual dimensions equipment offered to obtain the statutory electrical clearancesrequired for the substation and to suite the physical requirements of available land for thesubstation etc.

2.1.5 The enclosed drawings give the basic scheme, layout of substation, associated servicesetc. in case of any discrepancy between the drawings and text of specification, therequirements of text shall prevail in general. However, the Contractor is advised to getthese clarified from Employer.

2.2.0 GEO-TECHNICAL INVESTIGATION

2.2.1 The Contractor shall perform a detailed soil investigation to arrive at sufficiently accurate,general as well as specific information about the soil profile and the necessary soil parametersof the Site in order that the foundation of the various structures can be designed andconstructed safely and rationally.

2.3.0 SCOPE OF WORK

2.3.1 This clause of the specification covers all the work required for detailed soil investigation andpreparation of a detailed report. The work shall include mobilization of necessary equipment,


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providing necessary engineering supervision and technical personnel, skilled and unskilledlabour, etc., as required to carry out field investigation as well as, laboratory investigation,analysis and interpretation of data and results, preparation of detailed Geo-Technical reportincluding specific recommendations for the type of foundations and the allowable safe bearing

capacity for different sizes of foundations at different founding strata for the various structures ofthe substation. The Contractor shall make his own arrangement for locating the co-ordinatesand various test positions in field as per the information supplied to him and also for determiningthe reduced level of these locations with respect to the benchmark indicated by the Employer.

All the work shall be carried out as per latest edition of the corresponding Indian StandardCodes

2.3.1.1. Electrical Resistivity Test

This test shall be conducted to determine the Electrical resistivity of soil required for designing

safe grounding system for the entire station area. The specifications for the equipment andother accessories required for performing electrical resistivity test, the test procedure, andreporting of field observations shall confirm to relevant IEEE. The test shall be conducted usingWagner’s four electrode method as specified in IS: 1892, Appendix-B2. Unless otherwisespecified at each test location, the test shall be conducted along two perpendicular lines parallelto the co-ordinate axis. On each line a minimum of 8 to 10 readings shall be taken by changingthe spacing of the electrodes from an initial small value of 0.5 m up to a distance of 10.0 m.

2.3.1.2. Test Results and Reports

The Contractor shall submit the detailed report in two (2) copies wherein information regardingthe geological detail of the site, summarized observations and test data, and conclusions andrecommendations on the type of foundations with supporting calculations for therecommendations. Initially the report shall be submitted by the Contractor in draft form and afterthe draft report is approved, the final report in four (4) copies shall be submitted. The test datashall bear the signatures of the Investigation Agency, Vendor and also site representative ofEmployer.

2.4.0 SITE PREPARATION

2.4.1 The Contractor shall be responsible for proper levelling of switchyard site as per layout andlevels of switchyard finalised during detailed engineering stage. The Contractor at his own costshall make the layout and levels of all structure, etc.

2.4.2 Site levelling shall be in the scope of the Contractor.

2.4.3 As per contour of the switchyard site, the Contractor shall have to prepare the site by earthcutting or filling as per site condition to arrive at the required F.G.L..

2.5.0 SURFACE PREPARATION AND STONE SPREADING

2.5.1 Apart of anti-weed measures, stone spreading shall be done in the area covered by the earthmat including area extending one (1) meter all around the earthmat provided for switchyard


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2.5.2 Before stone filling, the area shall be thoroughly de-weeded including removal of roots.

2.5.3 A surface course of minimum 100 mm thickness of 20 mm nominal size river pebbles or (singlesize ungraded) broken stone shall be spread

2.6.0 SITE DRAINAGE

2.6.1 Adequate site drainage system shall be provided by the Contractor. The Contractor shall obtainrainfall data and design the storm water drainage system, (culverts, ditches, drains, etc.) toaccommodate run off due to the most intense rainfall that is likely to occur over the catchmentarea in one hour period on an average of once in tem years. The surface of the site shall besloped to prevent the ponding of water.

2.6.2 The maximum velocity for pipe drains and open drains shall be limited to 2.4m/sec and1.8m/sec respectively. However, minimum non-slitting velocity of 0.6 m/sec shall be ensured.

Longitudinal bed slope not milder than 1 in 1000 shall be provided.

2.6.3 For design of RCC pipes for drains and culverts, IS: 456 and IS:783 shall be followed.

2.6.4 The Contractor shall ensure that water drains are away from the site area and shall preventdamage to adjacent property by this water. Adequate protection shall be given to site surfaces,roads, ditches, culverts, etc., to prevent erosion of material by water.

2.6.5 The drainage system shall be adequate without the use of cable/pipe trenches. (Pipe drainsshall be provided in areas of switchyard where movement of crane will be necessary inoperating phase of the substation).

2.6.6 Open surface drains shall be provided with the Cement Concrete 1:2:4 of minimum thickness of100 mm or more as per design condition.

2.6.7 All internal site drainage system, including the final connection/disposal to Employer acceptancepoints shall be part of Supplier’s scope including all required civil work, mechanical andelectrical systems. The Contractor shall connect his drain(s) at one or more points to outfallpoints as feasible at site.

2.6.8 The drainage scheme and associated drawings shall be got approved.

2.7.0 TRANSFORMER FOUNDATION AND OIL RECOVERY SYSTEM

2.7.1 The Contractor shall provide an oil recovery system for all power transformers containinginsulating oil, integrated with the transformer foundations.

2.7.2 The oil recovery system shall be provided in order to avoid spread of fire by the oil, and forenvironmental protection.

Each transformer including oil conservator tank, etc., shall be placed in a self-sufficient pitsurrounded by retaining walls (Pit walls). The clear distance of the retaining wall from thetransformer shall be 20% of the transformer height or 0.8 m whichever is more. The oil


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collection pit thus formed shall have a void volume equal to 125% volume of total oil in thetransformer.

The grating shall be made of Galvanised MS flat of size 40 mm x 6 mm placed at 30 mm centerto center and 25 mm x 6 mm GI MS flat at a spacing of 150 mm at right angle to each other.

Maximum length of grating shall be 2000 mm and width shall not be more than 500 mm. Thegratings, supported on Galvanised ISMB 150 mm, shall be placed at the formation level and willbe covered with 100 mm thick layer of broken/crushed/non-crushed stone having size 35mm to 45 mm.

Each oil collection pit shall be drained towards a sump pit within the collection whose role is todrain water and oil due to leakage within the collection pit so that collection pit remains dry andclean.

2.7.3 The retaining walls which make up the oil collection pit shall be made of fire resistant material

such as reinforced cement concrete, fire brick etc., and shall be impervious to oil.The minimum height of the retaining walls shall be 15 cm above the finished level of the groundto avoid outside water pouring inside.

The bottom of the pit shall have a uniform slope towards the sump pit.

2.7.4 Drainage

A device showing level of sump pit shall be provided by Contractor fitted along with theautomatic/manual pumping system, which shall have sufficient capacity to evacuate the rain

water from the sump pit. The Contractor may propose other better scheme, if agreed byEmployer.

If the heights of the retaining walls, which form the oil collection pit, exceed 60 cm, steps shall beprovided to facilitate access to the oil collection pit.

When designing the oil collection pit, the movement of the transformer must be taken intoaccount.

2.7.5 Transformers shall be mounted on a rails fitted on top of the foundation for its easy removalfrom foundation/oil collection pit.

2.8.0 CABLE TRENCHES AND CABLE TRAYS

2.8.1 Design and construction of cable trenches with pre-cast removal R.C.C cover.

2.8.2 Cable trenches shall be blocked at the ends if required with brick masonry in cement sandmortar 1:6 and plaster with 12 mm thick 1:6 cement sand mortar.

2.9.0 FOUNDATION AND RCC CONSTRUCTION

2.9.1 General


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2.9.1.1. Work covered under this Clause of the Specification comprises the design and construction offoundations and other RCC constructions for switchyard structures, equipment supports,trenches, drains, jacking pad, control cubicles, bus supports, transformer, marshalling kiosks,auxiliary equipment and systems, buildings, tanks, boundary wall or for any other equipment or

service and any other foundation required to complete the work.2.9.1.2. Concrete shall conform to the requirements mentioned in IS: 456 and all the tests shall be

conducted as per relevant Indian Standard Codes as mentioned in Standard field quality planappended with the specification.

A minimum grade of M15 concrete (1:2:4 mix) shall be used for all structural/load bearingmembers as per latest IS 456.

2.9.1.3. If the site is sloppy, the foundation height will be adjusted to maintain the exact level of the topof structures to compensate such slopes.

2.9.1.4. The switchyard foundation’s plinths and building plinths shall be minimum 300 mm and 500 mmabove finished ground level respectively.

2.9.1.5. Minimum 75 mm thick lean concrete (1:4:8) shall be provided below all underground structures,foundations, trenches, etc., to provide a base for construction.

2.9.1.6. Concrete made with Portland slag cement shall be carefully cured and special importance shallbe given during the placing of concrete and removal of shuttering.

2.9.1.7. The design and detailing of foundations shall be done based on the approved soil data and sub-

soil conditions as well as for all possible critical loads and the combinations thereof. The Spreadfootings foundation or pile foundation as may be required based on soil/sub-soil conditions andsuperimposed loads shall be provided.

2.9.2 Design

2.9.2.1. All foundation shall be of reinforced cement concrete. The design and construction of RCCstructures shall be carried out as per IS: 456 and minimum grade of concrete shall be M-15.Higher grade of concrete than specified above may be used at the discretion of Contractorwithout any additional financial implication to the Employer.

2.9.2.2. Limit state method of design shall be adopted unless specified otherwise in the specification.

2.9.2.3. For detailing of reinforcement IS: 2502 and SP: 34 shall be followed. Cold twisted deformedbars (Fe-415 N/mm2) conforming to IS: 1786 shall be used as reinforcement. However, inspecific areas, mild steel (Grade-I) conforming to IS: 432 can also be used. Two layers ofreinforcement (on inner and outer face) shall be provided for wall and slab sections havingthickness of 150 mm and above. Clear cover to reinforcement towards the earth face shall beminimum 40 mm.

2.9.2.4. The procedure used for the design of the foundations shall be the most critical loading

combination of the steel structure and or equipment and or superstructure and other


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conditions, which produces the maximum stresses in the foundation or the foundationcomponent and as per the relevant IS Codes of foundation design.

2.9.2.5. Design shall consider any sub-soil water pressure that may be encountered following relevantstandard strictly.

2.9.2.6. Necessary protection to the foundation work, if required shall be provided to take care of anyspecial requirements for aggressive alkaline soil, black cotton soil or any other type of soilwhich is detrimental/harmful to the concrete foundations.

2.9.2.7. RCC columns shall be provided with rigid connection at the base.

2.9.2.8. All sub-structures shall be checked for sliding and overturning stability during both constructionand operating conditions for various combinations of loads. Factors of safety for these casesshall be taken as mentioned in relevant IS Codes or as stipulated elsewhere in the

Specifications. For checking against overturning, weight of soil vertically above footing shall betaken and inverted frustum of pyramid of earth on the foundation should not be considered.

2.9.2.9. Following conditions shall be considered for the design of water tank in pumps house,channels, sumps, trenches and other underground structures:

a) Full water pressure from inside and no earth pressure and ground water pressure andsurcharge pressure from outside (application only to