40/ETC-II(P)/ 2024-2025

Amount

Following work is to be carried out for replacement of gaskets including other associated work for 132/33 KV 40 MVA T/F-II (Technical Associate make) at 132 KV S/S Shankargarh under ETD-III, Prayagraj with all cost of man, material T&P as per technical specification for proper completion of the work with due safety and precautions as per direction of supervising engineer:-

Loading of 20 KL oil storage tank from 132 KV S/S Naini Complex, then safe carriage oil tank from 132 KV Naini Complex to 132 KV S/S Shankargarh and unloading the same to the places instucted by supervising engineer (distance approx. 55 Km.) vehicle/trailler and man power provided by contractor at his own cost

Opening of jumpers of HV/LV side bushing and removal of earthing strip from neutral bushing.

Dismantling of 40 MVA T/F-II accessories inclduing radiator, bushing, buchholz relay oit pipe line from conservator tank to main tank, oil pipe to OLTC and surge relay conservator tank.

Complete drain out of old transformer oil from the existing 40 MVA Transformer-II into empty oil drums/oil tanker.

Replacement of all gasket including the top cover gasket of T/F by providing & fixing of new gasket as per existing size made rubberized cork sheet Kotika/Turboze/NU corck brand grade 07 after due fabrication.

Cleaning of core & widing by T/F oil & removal of sludge from bottom man taink.

Applying vaccum to above T/F upto 760mm of HG for 24 Hrs. with adequate capacity vaccume pump after necessary blacking/erection as per requirement.

Filling of dry nitrogen gas having DEW point (-600c to -650c under vaccum from top value of T/F upto pressure of 3 PSI & maintaining the same in the tank for 12 Hrs. including the cost of Nitrogen gas & Nitrogen gas filling device.

Creating vaccum inside the main tank for period for 12 Hrs. & filling of centrifuged T/F oil in the main tank of required VDB after preparation in 20 KV Oil tanker.

Complete erecion of 40 MV AT/F-II including radiator, conservator tank, bushing with its turrets connecting oil pipe line, erection of cooling fan making control cable connection, buchhloz relay etc. topping up of T/F oil and final oil filling in the main tank, radiator, conservator tank & all other accessories.

Centrifuging of T/F oil in the T/F tank or oil tanker by connecting centrifuging pipe, circulating the T/F oil through centrifuging machine & taking BDV vallue of the oil preiodically till the required vallue is achieved as per direciton of supervising engineer and alos measurement of PPM. All labour T&P centrigusing machine shall be provided by contractor at his own cost.

Spray painting of 40 MVA T/F-II with one coat of red oxide primer and two coats smoke grey good quality enamel paint after cleaning of rust, dust and oil spots etc.

Coducting BDV, PPM, DGA, Tan Delta test of T/F oil of 40 MVA T/F-II period to charging and after passing of 15 Days from the date of charging. Job inludes sampel collection of T/F oil in suitable container & its Transporation to cerified lab & submission its test report (All test charges on contractor accounts).

General Engineering Works (BID ID -4759685)

rbs engineering (BID ID -4759760)