Replacement of old and defective Gasket by new standard Gasket to prevent oil leakage of 40MVA Transformer-I BBL make and 40MVA Transformer-II AREVA make at 132 KV Sub-station, Bansi under ETD-II, Basti H.Q. at Siddharthnagar

Amount

Dismantling of 40 MVA T/F Accessories including radiator, Bushing, Buchholz relay. Oil pipe line from conservatore tank oil line to OLTC Surge Relay, Conservator tank etc

Complete drain out of T/F oil from the Existing 40 MVA T/F in to Empty oil drum/ oil tank.

Replacement of all Gasket including the top Cover of T/F by Providing and Fixing of new gasket as per Existing Size made of rubberized Cork Sheet Kotika / turboze/ Cork brand grade.

Creating vacuum inside the main tank for the period of 12 Hrs and Filling of Centrifusing oil step up to Core & Winding conservator Tank Radiator etc.

Erection of HV/LV and neutral bushing with its turrets, inlet-outlet and OLTC pipelines with all valves surge relay, buchholz relay, inspection covers, tap changer gearbox etc for the gasket replacement of 40 MVA T/F-I & II M/S BBL and Areva make Transformer.

Centrifusing of complete T/F oil in oil tank by connecting centrifusing pipes circulating oil through centrifusing machine and observing BDV values till the desired value is achieved as per direction of supervising engineer and after complete filling the oil in T/F along with conservators and OLTC as above, completing the circulation of T/F oil through centrifusing machine till the desired oil properties and IR values are achieved as per direction of supervising engineer.

Carriage of oil tank 20 Kl including loading & unloading from 220KV store location to near 40MVA T/F-I & II at 132KV Substation, Bansi

Gupta Elect and Engg Works (BID ID -4935124)

Perfect Power Transformer Associates (BID ID -4935495)