Auxiliary works such as rigging, lifting, shifting, oil draining, filling, oil filtration during the overhauling of 40MVA transformer

Amount

Shifting of approximate 36KL New transformer oil drums from central stores of HWPK to 220KV switch yard and return back to central store after filling of dirty USED oil to the central store. Arrangement of the truck/ trolley and oil filing pump with hose is under the scope of vendor.

Arrangement of closed vessel and draining of 36 KL( approx) transformer oil from 40MVA transformer at 220KV switch yard Job includes arrangement of necessary hose pipe (also suitable for oil filter machine and Length 30Meters approximate) , flange and hardware. All required materials, hardware’s tools and tackles including truck is under the scope of vendor. Minimum capacity of each drain oil tank should be approximate 15-20KL and total capacity of oil drum should not be less than 40KL. These drum should be cylindrical type, top covered main hole with vent pipe, and at the lowest portion should have the drain valve. For keeping of these oil drain tank area near the 220KV switch yard approximate size 10 x7 meter should be make ready by disposing of debris is under the scope of vendor.

Arrangement of closed vassal with minimum 10 KL capacity for initial filtration & filling of 36 KL new transformer oil. These drum should be cylindrical type, top covered main hole with vent pipe, and drum should be suitable for run of filter machine in closed loop.

Arrangement of high vacuum 6000 LPH filter machine, along with operator and filters (1 micron) for filtration of new transformer oil up to required value of water content and BDV. Vendor should ensure the availability of the sufficient quantity of 1 microns filters so filtration of the 40MVA transformer oil should be completed successfully.

Arrangement of crane/hydra for lifting of bushings and transformer’s top cover, 8 Nos wooden slippers minimum size of 3 feet x 1feet W x1 feet thick, 2 Nos each of 5Tons & 2 Tons nylon sling and 2 Nos each of 5Tons & 2 Tons D shackle rating for dismantling of 40 MVA transformer.

Supply & replacement of cork Gasket 10 mm thick self adhesive of 1 number 220KV bushing of 35 MVA transformer as per applicable IS. Job includes removing of the 220KV connection, tie the bushing with crane to avoid the fall of bushing, remove the base bolt of the bushing, remove the old gasket clean the surface and place the self adhesive crock gasket, fixing back the bushing on its place.

JAGGI ELECTRICALS