BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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System of lock off to (but not exit from) the enclosure affected shall also beprovided.The fire protection system shall be segregated into separate zones so that at leastthe protection for any one compartment can be selected to the manual modewhilst, at the same time, retaining the automatic mode for the remainingenclosures.Lock-off boxes shall be provided at all entries to enclosures, with switcheswhereby an operator may inhibit automatic release of extinguishant. These boxesshall be provided with status indicators signifying 'Auto on' 'Auto-off' and'Extinguishing Released' and a red lamp shall also be illuminated at the box In theevent of' extinguishing release. The status shall be indicated at the control panelof the control building also.Fire detection shall be by means of ultra violet flame detectors with a backupsystem utilising rate-of-rise temperature detectors. The use of smoke detectorsshall be subject to specific approval by the Board as regards their type andlocation.Audible and visual fire alarms shall be provided in all machinery en-, closures, thelocal control cabs and in the control room of the control building. Additionalaudible alarms shall also be provided external to the turbine generator enclosures.Particular areas of high fire risk such as confined spaces where lubricating oilcould possibly come into contact with high temperature ,surfaces shall receivespecial consideration. Such areas shall be treated as separate fire protectionzones with detection and C0 2 gas injection facilities operating independently of thesystem provided for the machinery enclosure concerned.The fire protection equipment shall be complete in all respects including pipework,valves, fire detectors, nozzles, control equipment, fully charged C0 2 gas cylindersand cylinder racks.13.4 HYDRANT SYSTEMFire hydrant of water type shall be provided in the power station.13.4.2 HYDRANTHydrants shall be installed at required places around the gas turbine generatingunit, electrical building, and 230 kV switchyard. Each hydrant stand shall be fittedwith an isolating valve and approved type of instantaneous hose complying 30-mhose with combined jet/water-fog nozzle shall be provided in the cabinet adjacentto each hydrant.13.4.2 PIPINGThe fire fighting water mains shall consist of buried piping of at least 120 mmdiameter. The underground pipework shall be provided with an approvedprotective coating unless the pipe is manufactured from an approved noncorrosivematerial.Ghorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)120
13.5 PORTABLE EQUIPMENTThe following portable fire fighting equipment or equivalent shall be provided:(1) Twenty-four 5 kg C0 2 extinguishers(2) Five 20 kg C0 2 extinguishers with trolley(3) Twenty-four 5 kg Dry chemical extinguishers(4) Five 10 kg Dry chemical extinguishers.The portable equipment offered shall be of a type for which replacementcartridges and dry powder refills shall be readily available locally.13.5 FOAM BASED FIRE FIGHTING SYSTEM FOR FUEL TANKS (IF REQUIRED)Ghorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)121
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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
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-Power frequency withstand voltage(
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eaker.(6) Dielectric Test Voltagea.
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. Rated insulation level- Lighting
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f. Unless otherwise specified, the
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6.3.2 DESIGN CRITERIAThe steel stru
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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 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 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
Page 158 and 159: 17.1.4 SITE LABORATORYThe Contracto
Page 160 and 161: where directed by the Board extra s
Page 162 and 163: approval regarding the re-measureme
Page 164 and 165: igidly in position down to the lowe
Page 166 and 167: on piles together with the apparatu
Page 168 and 169: 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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