Replacement of Gasket of 100 MVA 220 132 KV Transformer at 220 KV Substation Mainpuri under ETD Mainpuri

Partially dismantling & safe stacking of mulsifire air pipe line, water pipe line and proper stacking.

Complete drain out of the T/F oil from 100 MVA T/F tank into oil tank including opening of valve and filling in empty oil drums and proper stacking.

Dismantling of 100 MVA T/F HV/LV/TV/Neutral Bushing and its turret opening of all pipe line inlet, outlet value, inspection cover, radiator header, gear box, bucholz relay, PRV, oil pump, NRV for replacement of gasket.

Replacement of old and damage gasket of 100 MVA T/F of good quality rubberized cork sheet Kotika/Telbroze/NE cork make at following details below.

Providing and making of top cover gasket of 100 MVA T/F. Opening of nut and bolts, removal of damage gasket, cleaning of top surface & making new gasket and fixing it properly.

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 of inspection cover.

Providing and making of gasket of 6* butter fly valve.

Providing and making of radiator pipe line 6* dia.

Providing and making of CT inspection cover HV/LV.

Providing and making of CT inspection cover TV.

Providing and making of CT inspection cover N.

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.

Providing and making of 1* dia valve gasket.

Providing and making of 4* dia valve gasket.

Providing and making of 2* 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 gasket WTI/OTI pocket.

Providing and making of gasket of header.

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 plug.

Providing and making of gasket of NRV.

Providing and making of gasket of MOG.

Replacement of different nut & bolts and main tank oil pipe line.

Erection of turret HV/LV/TV side and erection of bushing radiator, header, oil pipe line 6* & 4*3, Gear box, OLTC pipe line, pump, flow meter, inspection cover etc. for complete of work.

Complete evacuation of 100 MVA transformer main tank and filling of Dry Nitrogen/dry air of dew point-50C better in vacuum up to pressure of 0.25Kg./Cm2 and the again evacuating the transformer tank after required time interval (approx 12/24 hrs.) using centrifuging machine the work shell including connecting pipe of machine as required measuring due point values of N2/Dry Air after every cycle till the required value is achieved.

Cleaning and flushing of T/f core winding in main tank with hot T/F oil through centrifuging machine.

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.

Create the vacuum inside the tank & filling the T/F oil.

Re centrifuging of T/F oil already filled in oil tanker taking the IR/BDV value of T/F oil at an interval of 6 hrs as per norms of T/F manufacturer. After achieving the desired value top up the centrifuging T/F at required level (Machine shall be provide by the contractor) (Approx 45 KL)

Carriage of Oil tank (01 No. 50 KL or 02 nos. 20 KL oil tank) from near substation including loading, unloading and carriage at 220 KV S/S Mainpuri (Apprx distance 150km)

Erection of mulsifire system air/water pipe line proper replacement of gasket and tilting nut and bolts.

Cleaning the complete transformer with shop powder & washing it by water.

M/S SATKAR TRADERS

SHIVAM ENGINEERS