BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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can be seen through the window without opening the outside door. And thestructure of the panel shall be so designed as to be of rainwater proof and toprevent rusting on the hinges due to rainwater.(2) Local instrument PanelIt shall be of steel made for indoor use, vertical and self-standing type withdouble swing door on the back. Indicating instruments such as pressure gauges,etc. shall be fitted on the front panel and the pressure switches and thetransmitters for recorder, etc. shall be fitted inside the panel. Accessories such astest valves, orifice, etc. necessary for the various tests shall be installed inside thepanel so that calibration of instruments, confirmation test of setting value forpressure switches, etc. could be carried out without removing the instruments.The connection of electrical wiring and instrument pipes between inside andoutside panel shall be made at terminal block. The instruments and devices shallbe so arranged that in case of any leakage of oil or water from the instrumentpipes in the panel will cause no damage to the electrical equipment inside thepanel.8.6 230 kV SWITCHGEAR CONTROL AND PROTECTION8.6.1 230 kV SWITCHGEAR EQUIPMENT PANELThe following panels for controlling, indicating and protecting of 230 kVswitchgear equipment shall be provided, but not to be limited to, in the centralcontrol room:A. One (1) no of step-up Transformer panelB. Synchroniser PanelAll front panels of the above shall be equipped with control and metering facilities,and all rear panels shall be equipped with protection relays. The relays to beprovided under this Project shall be suitable for proper coordination with theexisting relays of the System.8.6.2 STEP UP TRANSFORMER PANEL [for GTG](1) FRONT PANELThe front panel shall be equipped with the following items of controls andinstruments, but not be limited to:One (1) lot 230 kV circuit breaker control switch.One (1) lot 230 kV disconnecting switch control switch.(optional)One (1) lot Ammeter selector switchOne (1) lot Synchronising key switch, removal types.One (1) lot Ammeter (230 kV side) (0-600 A), Voltmeter & pf meterTwo (2) sets Unidirectional watt hour meter (230 kV side) with provision ofreserve stop for export and import of energy and with indicating lamps forvoltage failure [Cl 0.2].One (1) lot Mimic busOne (1) lot Annunciators (minimum 15 windows)(2) REAR PANELGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)84
The rear panel shall be equipped with the following items of protection, but notbe limited to:One (1) lot Overall differential relayOne (1) lot Step-up transformer primary over-current relayOne (1) lot Step-up transformer neutral over-current relayOne necessary auxiliary relays, test terminal blocks, lockout relays, etc. shall alsobe provided.Step Up Transformer (s) protection & integration of the new 230 KV feeder (s)within existing 230 KV Busbar protection scheme is within contractor scope.8.6.3 SYNCHRONIZING PANELSwing type synchronising panel shall be equipped with the following itemsinstruments, but not be limited to:One (1) SynchroscopeTwo (2) Voltmeter (0-150 kV)Two (2) Frequency meter (45-55 Hz)8.6.4 MODIFICATION OF EXISTING CONTROL & PROTECTIONPANELS AT GHORASAL POWER STATION (n/a)8.7 DESK BOARD FOR 11 KV COMMON SWITCHGEARThe desk board for 11 KV, instruments, and other necessary things:One (1) lot Control switch for 11 kV circuit breaker for incomingOne (1) lot Control switch for spare 11 kV circuit breakerOne (1) lot 11 kV bus voltmeter selector switchOne (1) lot Incoming circuit ammeter selector switchOne (1) lot 11 kV bus voltmeter (0-11 kV)One (1) lot Incoming ammeter (0-6000 A)One (1) lot Spare breaker watt meterOne (1) lot Spare breaker Var meterOne (1) lot Spare breaker watt-hour meter with indicating lamp for voltagefailureOne (1) lot Mimic busOne (1) lot Annunciators (minimum 15 windows)One (1) lot Test terminal blocksFor starting motor control switch , one (1) ammeter with selector switch for themotor shall also be provided on this panel.8.8 DESK BOARD FOR AUXILIARY POWER SUPPLY Required no. of 6.6 kV and 415 V incoming circuit breaker control switch. Required no. of 6.6 kV and 415 V bus tie circuit breaker control switch. Required no. of 6.6 kV and 415 V feeder circuit breaker control switchGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)85
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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
Page 34 and 35: 4.1.4 Temperature RiseThe temperatu
Page 36 and 37: 4.1.12 Accessoriesa. Temperature de
Page 38 and 39: - Secondary wiring including cable
Page 40 and 41: 4.3.6 Voltage TransformerThe voltag
Page 42 and 43: 3) The rated service voltage shall
Page 44 and 45: Section 5TransformersGhorasal 200 M
Page 46 and 47: 5. TRANSFORMERS5.1 GENERALThe trans
Page 48 and 49: . The tank shall be of the welded s
Page 50 and 51: The wiring shall be connected at th
Page 52 and 53: 5.3 UNIT AUXILIARY TRANSFORMER5.3.1
Page 54 and 55: h. Anchor devicei. Oil preservation
Page 56 and 57: 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 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 108 and 109: 11. LIGHTING AND SMALL POWER SUPPLY
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
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The main power supply shall have a
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Static tests of all automatic seque
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Section 16Tests And InspectionsGhor
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16 TESTS AND INSPECTIONS16.1 GENERA
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subjected to the following tests by
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c. Stranded Conductors for Overhead
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days from the receipt of the said n
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circuit of unit motor control centr
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Special measures may have to be tak
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Checks shall be made of the local a
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Section 17Civil WorksGhorasal 200 M
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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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