WORK

Amount

Following works are to be Carried out for the Work of Centrifuging of Complete Transfomer Oil and Replacement of damaged Gasket of 160MVA T/F-1 (M/S Alstom make, Sl. No. TNLK-6548/B-29728, Year of Manufacturing 2003) alongwith other associated works with all cost of Men Materials, Mise Consumables, Crane / Hydra, Normal & Special T&Ps, Rails etc. required for Satisfactory Completion of work, as per Technical Specification & direction of the Supervising Engineer as per details below:

Partially dismantling & safe stacking of Mulsifire air Pipe line, water pipe line and proper stacking

Complete drain out of the Transformer Oil from 160MVA T/F tank into 3 No. 20KL Oil Tank including opening of valve and filling in Oil Tank.

Dismantling of 160 MVA T/F HV/IV/LV/Neutral Bushing and its Turret opening of all pipe line inlet, Outlet valve, inspection cover, Radiator Header, Gear box, Buchholz relay, PRV & Oil pump for replacement of Gaskets.

Providing and making of Top Cover Gasket of Transformer by Opening of Nut & Bolt and lifting of top cover with the help of suitable equipment and removal of damage Gasket cleaning of top surface & making new Gasket & fixing in proper Gasket.

Replacement of Old Gasket from different parts of the Transformers as per details below. The scope of works involves removal of Gaskets, Cleaning of surface, Fabrication of Gaskets of appropriate size of thickness 12/10/8/6 mm of Konica/ Nu-Cork make and fixing of Gaskets at proper place with adhesive along with other associated works.

Providing and making of HV Turret Gasket.

Providing and making of HV Bushing Gasket

Providing and making of IV Turret Gasket.

Providing and making of IV 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"/8" dia.

Providing and making of C.T. inspection cover HV

Providing and making of C.T. inspection cover LV

Providing and making of C.T. 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 2" dia Valve Gasket.

Providing and making of LV 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 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 plugs

Providing and making of Gasket of MOG

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

Erection of Turret HV/LV/IV side and erection of Bushing, Radiator, Header, Oil Pipe Line 6", and 3", Gear box, OLTC Pipe Line, Pump, Flow meter, Inspection Cover etc. for complete of work.

Complete Evacuation of 160MVA Transformer Main Tank and Filling of Dry Air of dew Point (-) 50 °C or Better in Vacuum up to Pressure of 0.25 Kg/Cm² and the again Evacuating the Transformer Tank after Required Time Interval (approx. 12/24 Hrs.) using Centrifuging Machine. The Work shall included Connecting Pipes of Machine as Required and Measuring Due Point Values of 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.

Centrifuging of T/F Oil (Quantity Approx. 50 KL) in Oil Storage Tanks, un- interrupted till the desired BDV Value of the Oil is achieved and then Filling & Topping up of the Centrifuged T/F Oil in Transformer as per Standard Procedure to Maintain required Oil Level in the Transformer including Commissioning of Air Cell if required. Centrifuging & Circulation of T/F Oil in Transformer, un- interrupted till the desired BDV Value of the Oil & IR Values of Bushings are achieved including Hourly Recording all the Parameters such as Temp., Vacuum, Insulation Resistance etc. Centrifuging Machine, its Operator and all associated T&Ps shall be arranged by the Contractor at his own cost.

Loading, Shifting and Unloading of 3 No. Oil Tank of Capacity 20KL with the help of Hydra / Crane from different substations distance approx. 80 KM to Working site near 160MVA T/F-I and put back the same from Working site to safe Storage place after Completion of Job as per instruction of Supervising Engineer

Erection of Mulsifire System, Air / Water Pipe Lines, Proper replacement of Gasket and Tightening of Nut & Bolts.

Spray painting of 160 MVA T/F with one coat of Red oxide primer and two coats of standard make smoke Gray good quality enamel paint after cleaning of rust, dust & all spots etc.

SATKAR TRADERS (BID ID -4798855)

TAJ ENTERPRISES (BID ID -4798810)