BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

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subjected to the following tests by the Contractor, in accordance with the latestrevisions of IEC 76 "Power transformers" and 551 "Measurement of transformerand reactor sound levels".a. General inspectionb. Measurements of Winding resistancec. Voltage ratio measurement and check of polarityd. Measurement of impedance voltagesC. Measurement of load lossf. Measurement of no-load loss and currentg. Test of temperature riseh. Induced over-voltage withstand testi. Separate-source voltage-withstand testJ. Insulation resistance measurement (megger)k. Results of shop tests to be submitted.- Results of type tests of lightning impulse-voltage withstand test- Test of protective relays- Characteristic test of bushing type current transformers16.2.5 230 KV SWITCHGEAR EQUIPMENT(1) Circuit BreakersThe tests shall be performed in accordance with the latest revisions of IEC 56-4'High-voltage alternating-current circuit breakers, Part 4: Type tests and routinetests'.- General inspection- Insulation resistance measurement- Dielectric withstand voltage test- Operation testIn accordance with the requirements of IEC 56, details of the transient recoveryvoltage to which the circuit breaker will be subjected during short circuit testingshall be submitted to the Board for approval.The Board may require in addition any of the following tests to be carried out, thedetails of which will be agreed between the Board and the Contractor:-- Earth fault interruption tests- Out of phase switching tests according to IEC 267- Capacitance switching tests- Small inductive breaking current switching tests- Tests under environmental conditions- Voltage withstand test after breaking capacity tests(2) Isolators and Earthing SwitchThe tests shall be performed in accordance with the latest revisions of IEC 129"Alternating current disconnectors (isolators) and earthing switches".- General inspection- Insulation resistance measurement- Dielectric withstand voltage test- Operation testGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)142
(3) Current TransformersThe test shall be performed in accordance with the latest revisions of IEC 185"Current transformers".- General inspection- Polarity test- Insulation resistance measurement- Dielectric withstand voltage test- Characteristic test(4) Voltage TransformersThe test shall be performed in accordance with the latest revisions of IEC 186"Voltage transformers”- General inspection- Polarity test- Insulation resistance measurement- Dielectric withstand voltage test- Characteristic test(5) Lightning ArrestersThe test shall be performed in accordance with the latest revisions of IEC 99-1"Lightning arresters, Part 1: Non-linear resistor type arresters for AC system".- General inspection- Power frequency spark-over voltage test- Lightning impulse spark-over voltage test- Measurement of leakage current and insulation resistance(6) Steel StructuresGeneral inspectionMaterial quality and quantity check(7) Bus Support, Insulators and Wiring MaterialsThe following shop tests shall be performed by sampling inspection method andnumber of samples for the test shall be decided after award of the Contract.a. Bus Supports- General inspection- Dielectric test of power frequency- Tension proof testb. Insulator Assemblies and Grounding Wire Attachment- General inspection- Dielectric test of power frequency- Breakdown test of insulator- Dimension measurement of hardware- Tension proof testGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)143
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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
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Section 76.6 Kv SwitchgearAndLow Te
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7. 6.6 kV SWITCHGEAR AND LOW TENSIO
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- Number of circuit :Determined by
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Section 8Control And ProtectionGhor
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8. CONTROL AND PROTECTION EQUIPMENT
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- Automatic synchronising equipment
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ee. AVR failure xff. Emergency Trip
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can be seen through the window with
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Required no. of 6.6 kV and 415 V vo
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8.10.3 CONTROL EQUIPMENT(1) Transmi
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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
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 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
Page 170 and 171: aggregates shall be washed prior to
Page 172 and 173: 17.6.13 FORMWORK AND TIMBERINGFormw
Page 174 and 175: he Contractor shall repair at his o
Page 176 and 177: Sieve designationPercentage by(Squa
Page 178 and 179: (b) Transverse Joints: The transver
Page 180 and 181: 17.7.2 Gravel SurfacingThe Contract
Page 182 and 183: extended with sufficient number of
Page 184 and 185: A written record of the drilling in
Page 186 and 187: ) Control EquipmentThe control equi
Page 188 and 189: 17.12.2 GatesSliding metal gates of
Page 190 and 191: 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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