58-ETC-I(A)/ 2024-2025

Amount

Following works is to be carried out for the work of Replacement of damaged Gasket of 160 MVA Transformer-I (EMCO Make) along with other associated works with all cost of men, materials, misc consumbles crane/hydra, normal and special T&P, Rails etc. required for satisfactory completion of work as per technical specification and direction of the JE/AE as per details below.

Partially dismantling and safe stacking of emulsifier air pipe line, water pipe line and properly.

Complete drain out of the Transformer oil from 160 MVA Transformer-I tank into 20 KL/40KL oil tank including opening of valve and filing in oil tank.

Dismantling 160 MVA Transformer-I HV/LV/TV/ Neutral bushing and it’s turret, opening of all pipe line inlet/outlet valve, inspection cover, radiator header, gearbox, buchholz relay, PRV, oil pump, NRV and jumpers for replacement of gasket and jumpering of HV/LV side bushing after erection.

Providing and making of Top Cover Gasket of Transformer Opening of nut & bolt and removal of damage Gasket, cleaning of top surface & making new Gasket and fixing it.

Replacement of old and damaged Gasket from different parts of the Transformers. The scope of works involves removal of Gasket, cleaning of surface, fabrication of Gasket of appropriate size of Konica/Telbroze/NE Cork make and fixing of Gasket at proper place with adhesive along with other associated works as per details given below.

Providing and making of HV Turret Gasket.

Providing and making of HV Bushing Gasket.

Providing and making of LV Turret Gasket.

Providing and making of LV Bushing Gasket.

Providing and making of Radiator Gasket.

Providing and making of Radiator Valve Gasket.

Providing and making of Gasket inspection cover.

Providing and making of Radiator pipe line 6" dia Gasket.

Providing and making of CT inspection cover HV/LV.

Providing and making of 1" dia pipe line Gasket.

Providing and making of surge relay Gasket.

Providing and making of Gasket Buchholz relay.

Providing and making of Gasket of PRV.

Providing and making of OLTC plate Gasket.

Providing and making of 1" dia valve Gasket.

Providing and making of 2" dia valve Gasket.

Providing and making of 4" dia valve Gasket.

Providing and making of TV bushing Gasket.

Providing and making of N bushing Gasket.

Providing and making of flow indicator Gasket.

Providing and making of Gasket oil pump.

Providing and making of Gasket 3" dia valve.

Providing and making of WTI/OTI pocket.

Providing and making of Gasket of conservator tank.

Providing and making of Gasket of OLTC tank.

Providing and making of nylon washer of radiator, Bushing Air releasing plugs.

Providing and making of Gasket of NRV.

Providing and making of Gasket of MOG.

Overhauling of diverter switch- Removal the diverter switch from chamber cleaning by hot oil, removed the dirty oil and proper cleaning and fixing in original shape.

Erection of Turret HV/LV/IV side and erection of Bushing. Radiator, Header, Oil Pipe Line 6" and 3" Gear Box, OLTC Pipe Line, Pump, Flow meter, inspection Cover etc. for complete of work

Performing the vacuum stand test, scope of work involves creating the vacuum inside the transformer upto 760 mm of Hg for evacuation of moisture from core & winding and maintaining the pressure at least 72 hours.

Complete Evacuation of main tank and filling of Dry Nitrogen of dew Point 50° C or better in Vacuum up to Pressure of 0.25Kg/CM² and the again evacuating the Transformer Tank after Required Time interval (approx.. 12 Hrs.) using centrifuging Machine. The Work shall include connecting Pipes of Machine as per Required and Measuring Due Point Values of N2 after every Cycle till the Require Value is Achieved.

Centrifuging of T/F storage Tanks, un-interrupted till the desired BDV & PPM Value of the Oil is achieved and then filling & Topping up of the Centrifuging of T/F Oil in Transformer as per standard Procedure to Maintain required Oil Lever in the Transformer including commissioning of Air Cell if required Centrifuging & Cirulation of T/F Oil in Transformer un-interrupted till the desired BDV & PPM Value of the Oil & IR Values of Bushings are achieved including Hourly Recording all the Parameters such as Temp. Vacuum, Insulation Resistance etc. Centrifuging its Operator and all associated T&Ps shall be arranged by the Contractor at his own cost.

Erection of Mulsifire system, Air / Water Pipe Line, Proper replacement of Gasket and Tightening of Nut & Bolts.

Safe transportation of 20 KL Oil tank from other UPPTCL Substation to 220 KV S/S Malwan, Fatehpur having distance approx 90 Kms. Work includes shifting and loading of Oil Tank with the help of Hydra/Crane at other UPPTCL Substation, safe transportation and unloading of it at working site near 100 MVA/ T/F-II at 220 KV S/S Malwan, Fatehpur with the help of Hydra. (If required).

Gupta Elect and Engg Works (BID ID -5142918)