WORK OF REPLACEMENT OF GASKET FOR ATTENDING THE OIL LEAKAGE OF 160 MVA (AREVA MAKE) TRANSFORMER AT 220 KV SUB-STATION MAJHOLA MORADABAD UNDER ELECTRICITY TRANSMISSION DIVISION-II, MORADABAD

Amount

The following work are to be carried out under ETD- II, Moradabad.

Dismantling & safe stacking of Mulsifire air Pipe line, water pipe line and proper stacking.

Drain out of the T/F oil from 160 MVA T/F tank into empty oil drums/Oil tanker including opening of valve and filling in empty oil drums and proper stacking. (approx 52 KL)

Dismantling of 160 MVA T/F HV/ LV/TV/Neutral Bushing and its Turret opening of all pipe line 6'', 4'' & 2'' inlet, Outlet valve , diverter switch inspection cover, Buchholz relay, PRV for replacement of gasket.

Providing and making of top cover gasket of 160 MVA Transformer after opening of nuts & bolts removal of damaged gasket cleaning of top surface & making new gasket and its proper fixing.

Replacement of old and damage gasket of 160 MVA T/F make of good quality rubberized cork sheet Kotika/Telbroze/NE Cork make at following details 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 gasket of inspection cover.

Providing and making of gasket of 6”Butterfly valve.

Providing and making of Radiator pipe line 6" dia

Providing and making of C.T. inspection cover HV/ LV.

Providing and making of C.T. inspection cover TV

Providing and making of C.T. inspection cover Neutral

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 diverter switch 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 Top rubber ball of TV Bushing

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 of oil pump

Providing and making of gasket 3" dia valve.

Providing and making of gasket WT/OTI pocket.

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

Replacement of different nut & bolts of main tank oil Pipe line.

Erection of turret HV/LV/TV side and erection of bushing, oil pipe line 6” & 4”3”,Gear box, OLTC pipe line, Pump, Flow meter, Inspection Cover etc. for complete of work.

Complete evacuation of 160 MVA Transformer main tank and filling of Dry air/ Dry Nitrogen of dew point -500 C or better in vacuum up to pressure of 0.25Kg/Cm2 and the again evacuating the Transformer tank after required time interval (approx. 12/24 Hrs) using centrifuging machine the work shell including connecting pipe of machine as required measuring Due Point values of N2 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 oil T/F oil at an interval of 6 hrs. as per norms of T/F manufacturer. After achieving the desired value, top up the centrifuged T/F at required level (machine shall be provide by the contractor) (Approx. 52 KL).

Carriage of oil tank 20/35KL anywhere within 50 Km including loading, unloading and carriage at 220KV S/S Majhola Moradabad & return back at initial place.

Erection of mulsifire system air/water pipe line proper replacement of gasket and Tightening nut, bolts & painting.

Gupta Elect and Engg Works

SHIVAM ENGINEERS