WORK

Amount

Following works are required for stoppage of oil leakage from 63MVAR Y Phase unit of 189MVAR Bus Reactor by replacemnt of old and damaged gasket including Centrifuging work of reactor oil at 765kV S/S Unnao,as per details given below-

Draining of Bus Reactor oil from Main tank of bus reactor to empty 20KL. Oil tank.All Manpower ,Material and T&P will be provided by firm for proper completion of work.

Providing of Dry Air at the time opening of blanking plate for erection of 63MVAR main tank and filling of Dry Air of dew point -50°C or better for completion of Work. The work shell including connecting pipe as required measuring Due Point values of Dry Air.

Complete dismantling of 63 MVAR of all radiators, conservator tank, oil pipe line, all bushing turret,L.A.,all pipe line, radiator, and other associated work to complete the job satisfactory including proper stacking. All other T & P etc. Shall be arranged by the contractor at his own cost.

Providing and replacement of old and damaged gasket and O-Rings with new standard T-elbows make rubberized cork sheet at 765kV,63MVAR Y Phase Bus Reactor unit including dismantalling and reassembling of reactor parts and cost of gaskets.

Replacement of old and damaged gasket involving the work of opening the nut and bolts of top cover plate,lifting the top cover,cleaning of the old and damaged gasket and its removal from surface by scrapping and cleaning the top cover surface,placing new 16mm thick rubberized cork sheet.jointing and punching the hole fitting of top surface,fitting the top cover and tightening the nut and bolts for proper completion of work.

Replacement of HV Bushing gasket along with its turret gasket.

Replacement of Neutral Bushing gasket along with its turret gasket.

Replacement of gasket of inspection covers.

Replacement of Gasket of Buchholz relay

Replacement of Gasket of PRV

Replacement of 1" diameter pipe line gaskets.

Repalcement of oil circulating main pipe line gaskets.

Replacement of sampling/draining gaskets inspection covers.

Dismantling of emulsifire system and erection of same after replacement of gasket as required.

Complete erection of 63MVAR Bus Reactor by erection of radiator, conservator tank, bushings their turret, L.A.,connecting oil pipe line etc.to complete the job satisfactorily including first filling of oil in tank, radiator, oil pipe lines, conservator tank etc. and attending the oil leakage if any satisfactory completion of work.

Complete evacutation of 765kV 63MVAR Y Phase bus reactor main tank unit and filling dry Air / Nitrogen with dew point -50 C or better in vaccum upto pressure of 0.25kg/Sqcm and then again evacuating the reactor tank after required time interval (approx. 12-24 hrs.) using Centrifuging Machine ,The Work shall include measuring of dew point values of Dry Air / Nitrogen after every cycle till required value is achieved.

Centrifuging of Bus Reactor oil in 20kL Oil Tank at 765kV S/S Unnao with the help of high Vaccum Centrifuging plant at site.Taking the PPM and BDV value of Bus reactor oil at an interval of 04 hrs. as per norms till the desired value of PPM and BDV are obtained .The Work includes testing of Reactor oil sample from certified Lab.All Manpower ,material and T&P will be provided by firm for proper completion of work .

Filling of centrifuged reactor oil into reactor main tank and Radiators from oil tanks under vaccum after performing the vaccum stand test successfully.

Gupta Elect and Engg Works (BID ID -4462983)

Perfect Power Transformer Associates (BID ID -4485709)

Meena Elect & Engg. Works (BID ID -4485610)