BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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11. LIGHTING AND SMALL POWER SUPPLY SYSTEM11.1 GENERAL(1) Scope of WorksThe Contractor shall design, manufacture, deliver and install power stationlighting and small power supply complete with all the accessories at the site asspecified hereinafter.(2) DetailsDetail description and drawings of all lighting fittings, distribution boards,switches, DC equipment, socket outlets, poles, glands, etc., comprising the offershall be submitted with Tender.(3) Electricity SupplySupplies for lighting distribution boards of 415 Volts 3 phase 4 wire 50 Hz shall betaken from the station auxiliary switchboard.The 125-volt DC supply required for emergency lighting services shall be obtainedfrom the batteries supplied under the Section 10. Under AC failure conditions forthe DC, emergency lighting to be installed shall be automatically switched on.11.2 DISTRIBUTION BOARDSThe distribution boards and all component parts shall be manufactured and testedin accordance with the latest IEC standard. Distribution boards shall have dustproof sheet steel, galvanised, weatherproof cases. The metal casing is to beprovided with knockouts or other approved form of cable entries, correspondingto the circuit capacity, together with a suitably screened brass earthing stud.The distribution boards shall be either double pole and neutral types as requiredand shall be equipped with means to provide over load protection to each circuit.This protection shall comprise moulded case circuit breaker.11.3 CABLESAll cabling associated with the lighting and small power socket outlets servicesshall be stranded annealed copper conductor, PVC insulated galvanised steel wireor steel tape armoured and PVC sheathed as appropriate or mineral insulatedcopper sheathed cable depending upon the service required.The Contractor shall select conductor sizes for the respective circuits to mcc thefollowing conditions:a. Minimum conductor sizes for lighting circuits shall be 2.0 sq. mm and forsocket outlets 3.5 sq. mm.b. The size shall be adequate for the current to be carried.c. The size shall be adequate to limit the voltage drop in phase and neutralGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)108
conductor to the farthest lighting or power point under normal full load conditionsto within 2.5 %.11.4 LIGHTING AND SMALL POWERThe following lighting and small power arrangements shall be provided as aminimum by the Contractor.No Location IlluminationLevel (Lux)a. Power Generating AreaType of FittingbcInside of packing exceptcontrol package100 Fluorescent lamp orincandescent lamp with reflectorand guard if necessary explosionproof type shall be used.Inside of control package 500 Fluorescent lamp with reflectorInside of crane rainshelterguard20 Fluorescent lamp or mercuryvapour lamp with reflector anddiffuserAround GT unit 20 Mercury vapour lamp withfloodlight fittingRoad or path 10 Mercury vapour lamp withhighway fitting or floodlightfitting230 KV SwitchyardAround Switchgear 20 Mercury vapour lamp withfloodlight fittingRoadways 10 mercury vapour lamp withhighway fittingControl buildingControl room 500 Fluorescent lamp with reflectorand diffuserElectrical room and cableroom50 Fluorescent lamp with reflectorand guardOffice 500 -do-Toilet, corridor, etc. 50 -do-f. Plug SocketsPlug sockets shall be located so that any point inside the GTG package, inside abuilding or outside in the high voltage areas can be reached within the followingdistances from a plug socket.(i)Single phase plug socketIndoor -Outdoor-:10.0 m:20.0 mGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)109
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Volume - 2Technical RequirementsSec
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GHORASAL 200 MW to 300 MW GAS TURBI
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2. Scope Of Work2.0 Scope of work2.
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3. Generator switchgeara. Outdoor e
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Rated frequency: 50 HzRated nominal
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Lighting impulseWithstand voltage(1
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h. One (1) Lot Control and instrume
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2.13 TestsThe Contractor shall be r
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Section 3Power Plant ArrangementGho
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3.0 Power Plant Arrangement3.1 Gene
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3.3.2.4 Compressor Wet Washing Syst
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The distillate fuel oil system shal
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6. Sump tankThe sump tank allows dr
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provide necessary protection for ma
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4. Generator And Ancillary Equipmen
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4.1.4 Temperature RiseThe temperatu
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4.1.12 Accessoriesa. Temperature de
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- Secondary wiring including cable
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4.3.6 Voltage TransformerThe voltag
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3) The rated service voltage shall
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Section 5TransformersGhorasal 200 M
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5. TRANSFORMERS5.1 GENERALThe trans
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. The tank shall be of the welded s
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The wiring shall be connected at th
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5.3 UNIT AUXILIARY TRANSFORMER5.3.1
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h. Anchor devicei. Oil preservation
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6. 230 kV OUTDOOR SWITCHGEAR, EQUIP
Page 58 and 59: -Power frequency withstand voltage(
Page 60 and 61: eaker.(6) Dielectric Test Voltagea.
Page 62 and 63: . Rated insulation level- Lighting
Page 64 and 65: f. Unless otherwise specified, the
Page 66 and 67: 6.3.2 DESIGN CRITERIAThe steel stru
Page 68 and 69: 6.4 INSULATORS AND WIRING MATERIALS
Page 70 and 71: Section 76.6 Kv SwitchgearAndLow Te
Page 72 and 73: 7. 6.6 kV SWITCHGEAR AND LOW TENSIO
Page 74 and 75: - Number of circuit :Determined by
Page 76 and 77: Section 8Control And ProtectionGhor
Page 78 and 79: 8. CONTROL AND PROTECTION EQUIPMENT
Page 80 and 81: - Automatic synchronising equipment
Page 82 and 83: ee. AVR failure xff. Emergency Trip
Page 84 and 85: can be seen through the window with
Page 86 and 87: Required no. of 6.6 kV and 415 V vo
Page 88 and 89: 8.10.3 CONTROL EQUIPMENT(1) Transmi
Page 90 and 91: The test block shall be of the back
Page 92 and 93: Section 9Cabling And GroundingGhora
Page 94 and 95: 9. CABLING AND GROUNDING9.1 GENERAL
Page 96 and 97: 9.2.4 CONTROL AND INSTRUMENT CABLES
Page 98 and 99: 9.4 CABLE ERECTIONConcrete lined ca
Page 100 and 101: Section 10DC Power Supply SystemGho
Page 102 and 103: 10 DC POWER SUPPLY SYSTEM10.1 BATTE
Page 104 and 105: float charge as well as boost charg
Page 106 and 107: Section 11Lighting And Small Power
Page 110 and 111: (ii)Three phase plug socketOutdoor-
Page 112 and 113: Section 12Fuel Handling FacilitiesG
Page 114 and 115: 12. FUEL OIL SYSTEM AND HANDLING FA
Page 116 and 117: from unloading base to the fuel tan
Page 118 and 119: 13. FIRE PROTECTION FACILITIES13.1
Page 120 and 121: System of lock off to (but not exit
Page 122 and 123: Section 14Communication FacilitiesG
Page 124 and 125: 14. COMMUNICATION FACILITIES14.1 GE
Page 126 and 127: (2) General CommunicationWhen the o
Page 128 and 129: (1) BatteryType of batteryCapacityN
Page 130 and 131: 15. MAINTENANCE FACILITIESPage15.1
Page 132 and 133: 15.1.4 RATINGThe rating of the cran
Page 134 and 135: The main power supply shall have a
Page 136 and 137: Static tests of all automatic seque
Page 138 and 139: Section 16Tests And InspectionsGhor
Page 140 and 141: 16 TESTS AND INSPECTIONS16.1 GENERA
Page 142 and 143: subjected to the following tests by
Page 144 and 145: c. Stranded Conductors for Overhead
Page 146 and 147: days from the receipt of the said n
Page 148 and 149: circuit of unit motor control centr
Page 150 and 151: Special measures may have to be tak
Page 152 and 153: Checks shall be made of the local a
Page 154 and 155: Section 17Civil WorksGhorasal 200 M
Page 156 and 157: 17.9 Sewage Works17.9.1 General17.9
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17.1.4 SITE LABORATORYThe Contracto
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where directed by the Board extra s
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approval regarding the re-measureme
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igidly in position down to the lowe
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on piles together with the apparatu
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than 15 cm in size containing suita
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aggregates shall be washed prior to
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17.6.13 FORMWORK AND TIMBERINGFormw
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he Contractor shall repair at his o
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Sieve designationPercentage by(Squa
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(b) Transverse Joints: The transver
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17.7.2 Gravel SurfacingThe Contract
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extended with sufficient number of
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A written record of the drilling in
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) Control EquipmentThe control equi
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17.12.2 GatesSliding metal gates of
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18 Building WORKS18.1 General18.1.1
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18.1.4 RecordsThe Contractor shall
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FrameRoofExterior wallPartition wal
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18.5 Materials And Workmanship18.5.
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(7) PaintPrior to delivery after sh
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oof cladding shall be less than 1.1
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. Wooden doorsPlywood for panelThic
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The terrazzo is to be trowelled to
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to suit. Stud shall be formed of ap
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Section 19Spare PartsGhorasal 200 M
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19. SPARE PARTS19.1 GENERALThe Cont
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BACKGROUND INFORMATION:Bangladesh P
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- Overhauling of all electrical mot
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3. BASIS OF PRICE3.1 Basis of price
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the delayed services or such other
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13. GENERAL CLAUSES CONCERNING TERM
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17. INSURANCEThe insurance includin
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Appendixes20.1 Site Layout20.2 Grid
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BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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