The Durgapur Projects Limited Tender

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The Durgapur Projects Limited - DPL Tender

Works
Electrical Generators And Transformers
Electrical and Electronics
Eprocure
Opening Date11 Jul 2022
Closing Date12 Aug 2022
Tender Amount₹ 20,07,000 
Notes
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Costs

Description

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BOQ Items

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Disconnection of oil lines to conservator tank, radiator side equilizer line from main Tank. Blanking work prior to oil draing at reasonable level. All blanking plates should be arranged by the party. Proper storage of the drain oil in proper storage tank for further use. After completion of job, re-assembling is also included in the scope.

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Dismantling of existing HV Bushing and Erection & commissioning of new HV Bushing on base turret by proper procedure.This job also include requisite o-ring & gasket replacement of bushing housing as well as Turret Flange.New HV Bushing Testing assistance to be provided prior to replacement job. Arrangement of necessary scaffolding work & oil level lowering at requisite level with supply & charging of dry air/N2 gas (if required) is under the scope of the party.

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Supply and Change of O-ring & Gaskets of LV Bushing including Turret Flange. Brand & material of O-ring & Gaskets shall be approved by EIC

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Supply and Change of other gasket such as HV Neutral bushing, Inspection Chamber gaskets,WTI,OTI Gasket, Buchholz Relay & OSR gasket, PRD Gaskets, other flange gaskets.Checking of aircell, level gauge glass & MOG. Arresting of all oil leakage points in radiator & conservator section including replacement of gaskets, o-rings, reparing of butterfly valves, reparing of finges & header pipes of radiator banks by brazing, if necessary. Brand & material of O-ring & Gaskets shall be approved by EIC

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Oil filtration after successful completion of jobs still achieving desired parameter of oil due to exposure to air during maintenance works after necessary oil filling. Arrangement of Oil Filter machine is in party's scope. Transportation of oil drums is also in party's scope from nearest store.

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Transformer surface cleaning by suitable cleaning agent, checking, oil settling,venting jobs after completion of oil filtration & filling work.

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Connection of HV & LV Terminal after satisfactory testing of Transformer.

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Unit Auxiliary Transformer, UAT# 8A & 8B, 20MVA, 16.5KV/6.9KV, Current(HV):699.81Amp Current(LV):1673.479Amp, Connection: Dyn11, Cooling-ONAF/ONAN,Oil Qty(Ltr): 16900

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Replacement of existing aircell & MOG in conservator tank by new ones including supply.

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Change of gaskets/ O-rings such as Inspection Chamber gaskets,WTI,OTI Gasket, Buchholz Relay gasket, PRD Gaskets, other flange gaskets.Checking of aircell, level gauge glass & MOG. Arresting of all oil leakage points in radiator & conservator section including replacement of gaskets, o-rings, reparing of butterfly valves, reparing of finges & header pipes of radiator banks by brazing, if necessary.

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Oil filtration after successful completion of jobs still achieving desired parameter of oil due to exposure to air during maintenance works after necessary oil filling. Arrangement of Oil Filter machine is in party's scope. Transportation of oil drums is also in party's scope from nearest store.

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Transformer surface cleaning by suitable cleaning agent, checking, oil settling,venting jobs after completion of oil filtration & filling work.

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Station Transformer #8, 55MVA, 220KV/6.9KV, Current(HV):144.34Amp Current(LV):2301.03Amp, Connection: YNynyn0, Cooling-ONAF/ONAN, Oil Qty(Ltr): 52440

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Oil filtration after successful completion of jobs still achieving desired parameter of oil due to exposure to air during maintenance works after necessary oil filling. Arrangement of Oil Filter machine is in party's scope.Transportation of oil drums is also in party's scope from nearest store.

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Transformer surface cleaning by suitable cleaning agent, checking, oil settling,venting jobs after completion of oil filtration & filling work.

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