WORK OF REPLACEMENT OF GASKET AND OIL CENTRIFUSING OF 40 MVA TRANSFORMER-II (KANOHAR MAKE) AT 132 KV SUB-STATION NARAINI UNDER ETD, BANDA.

Amount

Details of Work/supply

The following works are carried out for Replacement of Gaskets of 40MVA T/F-II (KANOHAR make) alongwith other associated Works at 132KV Sub Station Naraini, Banda with all Cost of Men, Misc Consumables, Crane / Hydra, Centrifuging Machine, Nomal & Special T&Ps,any other accessory works like cleaning of oil tank (with oil or as required) etc required for satisfactory completion of the Job, as per Technical Specifications & Direction of the Supervising Engineer, as per Details below-

Removal of Jumpers of HV & LV side Bushings of the Transformer. The Scope of Work involves Opening of Bolts & Nuts and Removal of Jumpers, Bushing Clamps etc.

Complete Draining of the T/F Oil from the 40MVA Transformer - II into Oil Tanker / Oil Drums and Stacking them at Proper Place.

Complete Dismantling of the 40MVA T/F as required for Gasket Replacement. The Scope of Work Involves Dismantling of HV LV Neutral Bushings, Turrets, Radiators, Conservator Tank, Explosion Vent Pipe. Buchholz Relay, Oil Pipe Lines. Flanges, Valves, Cooling Fans cc, along with Opening of associated Electrical Connections, Stacking of all the Dismantled Parts at Proper Place in the Switchyard including Proper Blanking of the Open Points before Replacement of Gaskets.

Complete Replacement of Gaskets of 40MVA Transformer. The Scope of Work Involves Reolacement of Gaskets Removal of old / damaged Gasket of Transformer's Top Cover and old / damaged gaskets of different Parts of the Transformer by Cleaning of Surfaces, Providing & Fabrication of Gaskcts out of good Quality Rubberized Cork Sheet Gaskets of Konica Troborze / Nu-Cork make having Temperature Bearing Capacity around 380'C and Fixing the Gaskets with Adhesive at Rim & other Surfaces including Bushing 'O' Rings etc. as per requirement. The work also includes replacement of O Rings/ Oil Seal of different valves of the Transformer and Replacement of Oil Indicator Glass of the Conservator Tank.

Clcaning of Transformer's Core and Winding by Hot Transformer Oil and Removing the Complete Sludge from Bottom by Hot oil Flushing with Centrifugine Machine

Complete Erection of 40MVA Transformer - II by Erection of HV / LV /Neutral Bushings, Turets, Radiators, Conservator Tank, Explosion Vent Pipe, Buchholz Relay, Oil Pipe Lines Flanges, Valves, Cooling Fans etc. at its original Place. Complete Evacuation of Main Tank of the Transformer and filling of Dry Nitrogen / Dry Air of Dew Point -50'C or better in Vacuum upto Pressure of 0.25K g/cm' and the again Evacuating the Transformer Tank after Required Time Interval (approx, 12 Hrs.) using Centrifuging Machine. The Scope of Work Involves Measuring Due Point Values of N2 after every Cycle till the Required Value is achieved.

Centrifuging of Oil flled in oil Tanker, Un-Interrupted till the desired BDV Value of the Achiraved Oil is Achieved, Filling of Transformer 0il into Main Tank and Radiators from Oil Tanker, then Centrifuging & Circulation of the Oil in Transforer, Un-Interupted till the Desired BDV Values of the Oil & IR Values are Achieved including Recording of all the Parameters such as Temperature, Vacuum, Insulation Resistance etc. every 2 Hours. Centrifuging Machine, its Operator, all associated T&Ps etc. shall be Arranged by the Contractor at his own cost.

Jumpering of HV & LV side Bushings of the Transformer. The Scope of Work Involves Fixing &e Tightening of Bushing Clamps with appropriate size Bolts - Nuts - Washers including Reolacement of Clamps, Jumpers etc. as required.

Loading & Carriage of 20 KL oil tank from anywhere to 132 KV S/S Naraini ( upto distance of 100 Kms) for purpose of storing of oil after draining from T/F including cost of loading / unloading / transportation/ truck/fuel/driver and any other T&P as required for carriage work.

Supply and fixing of New Magnetic Oil Gauge (MOG) of sukrut/standard make, Range : Min 30 degree, 1/2, 3/4, Max dia as per sample suitable for 40 MVA T/F KANOHAR make

Conducting testing by NABL Lab /Powergrid Lab/ CPRI etc. arranging appropriate equipment in following testing. 1. Electric Strength- Break Down Voltage (BDV) 2. Dissolved Gas Analysis (DGA) 3. Dielectric Dissipation Factor 4. Water Content(PPM) 5. Specific Resistance

Rates qouted by the bidders shall be without taxes. Taxes applicable if any to paid extra

M/S DHIRENDRA SINGH (BID ID -5185135)

Technocrat Electrical (BID ID -5180867)

Perfect Power Transformer Associates (BID ID -5188202)