DISMANTLING, SHIFTING OF OLD 160 MVA TRANSFORMER (BBL MAKE) AND ERECTION OF 200 MVA T/F WITH ALL ASSOCIATED WORK

Amount

Diamataling of old 160 MVA T/F (M/s BBL` Make and Erection of 200 MVA transformer at 220 KV Substation, Sahupuri

Opening of Jumper, electrical connection and Cutting of Earthing strip from 160 MVA Transformer 220 KV Sub-Station Sahupuri.

Dismantling of all water and air pipe lines of mulsifire system of 160 MVA T/F its safe shifting to required place 220 KV Sub-Station Sahupuri.

Dismantling & re-erection of 132KV LA upon Structure and proper tightening

Dismantling of defective 160 MVA T/F and accessories removing the Radiator, Conservator Tank, A Frame, Header, Bushing, Pipe line, Pump, Cooling Fan etc. and drain out of oil upto required level or as per required and instructions of AE/JE into empty oil drums and shifting of oil drum as per instruction at 220 KV Sub-Station Sahupuri.

Shifting of dismantled 160 MVA T/F main tank from plinth to near 20 Mtrs.

Additional shifting 130 Mtr. @ 5mtr/ job

Shifting and placement of all dismantled accessories as radiator, conservator tank, and other accessories to store /open Switch yard and proper stacking.

Shifting of 200 MVA T/F main tank from unloading place to existing T/F plinth by dragging distance about 20 Mtrs

Additional shifting 230 Mtr. @ 5mtr/ job

Replacement of gasket Radiator / Bushing / Pipeline of T/F by providing and fixing of new gasket as per existing size made of rubberized cork sheet Kotika / Turborze brand grade 07 ( only dismantle accessories).

Providing of Dry Air/N2 at the time opening of blanking plate for erection of 200 MVA Transformer main tank and filling of Dry Air of dew point -40°C or better for completion of Work. The work shell including connecting pipe as required measuring Due Point values of Dry Air.

Filling the T/F oil in oil tank and its centrifuging upto required BDV and Creating the vacuum inside the 200 MVA T/F before filling the T/F oil inside the main tank.

Complete Erection of 200 MVA T/F and accessories of HV/LV /TV side Bushing, Radiator, Conservator Tank, A Frame, Header, Pipe line, Pump, Cooling Fan etc. and Top up the oil upto required level

Complete evacuation of 200 MVA Transformer main tank and filling of Dry Air / N2 of dew point -40°C or better in vacuum up to pressure of 0.25Kg/Cm² and the again evacuating the Transformer tank after required time interval (approx12/24 Hrs.) using centrifuging machine. The work shall including connecting pipe of machine as required measuring Due Point values of Dry Air after every cycle till the required value is achieved.

Centrifuging of complete T/F oil in T/F by connecting centrifuging pipes circulating the T/F oil through centrifuging machine and taking the BDV/PPM value or any other requirements of site of the oil periodically till the required value is achieved as per direction of supervising engineer. The work includes all the work related to centrifuging the oil and filling the oil in T/F and tank. (Operator and centrifuging machine shall be arrange by the Contactor)

Laying, Dressing and binding of cable including fixing of cable tray support structure and termination of cable marking the top and its ferruling as per schedule and inter connection including shifting of old cable as per requirement of RTCC panel, marshaling box, driving mechanism etc.

Earthing of T/F body, MB DM box OLTC, RTCC at two points and as per instruction of AE/JE using 75x10/50x6mm M.S. flat for 40 mm M.S. rod.

Painting of earthing strip and also rust removal of MS flat by emery paper above the ground level by one coat of red oxide and two coats of bus green paints.

Preparing and fitting of ACSR Moose Conductor jumper on 220KV and 132 KV side cutting of conductor and fixing of equipment (Approx.06Nos. Jumper)

For installation of emulsifier for replacement of 160 MVA T/F by 200 MVA at 220 KV S/S Sahupuri.

Supply & laying upper ground as required of different size MS pipe ‘B’ class Jindal/Tata make for the water pipe line support as per IS specification (IS Code-1239) as per drawing enclosed complete with elbow tee socket reduce nuts and bolts with detail as below with anticorrosive treatment or painting as where required along with fabrication & fixing of L & U shape support with associated work to complete the job in all respect (150 NB).

Supply & laying upper ground as required of different size GI pipe ‘B’ class Jindal/Tata make for fire detection water pipe line as per IS specification (IS Code-1239) as per drawing enclosed complete with elbow tee socket reduce nuts and bolts with detail as below with anticorrosive treatment or painting as where required along with fabrication & fixing of L & U shape support with associated work to complete the job in all respect (65 NB).

Supply & installation of 80 NB MS Pipe B class Jindal/Tata make for making support running of water/air pipe line including providing flange on bottom & its proper grouting with fastener as where required.

Supply & installation of flanges as per IS-1538 of different size as per drawing work include proper butt welding with pipe & proper packing and coupling with Nus & Bolt and fastener as required.

Re-installation with fresh coat of painting along with modification of old GI pipe line as per details with fittings of new elbow, t- sockets, bends as required and using it for the re- installation of emulsifier on new 200 MVA, 220/132 KV T/F.

Re-installation , testing and commissioning of 80 mm dia G.I pipe for support with round clamp at top flange at bottom as per specification

Miscellaneous works including providing and fixing & of items like alarm gong, Brass globe valves, Back pressure Valve etc. and other works not included in the above work that may be necessary for completion of work.

Dismantling & installation including repairing of deluge valve by replacement of gasket & repairing of sheet repairing of alarm electrical connection of pressure switch including of control cable etc.

Re-installation & commissioning of old & used high velocity water spray nozzles flow capacity 3.5kg/cm2 spray core angle 90by using new and old from dismantled.

Re-installation & commissioning of old and used Quartz bulb detectors (QBS) operate at 76 degree celcius at rated temperature for actuation of the element 10/12 sec by using new and old from dismantled.

Re-installation & commissioning of 150 NB Deluge valve as per requirement of transformer which includes servicing of related fitting like 150 NB T-Strainer 02 No. gate valves related parts to be used of dismantled and new as per requirement of site to complete the job satisfactorily

TAJ ENTERPRISES

Gupta Elect and Engg Works

Meena Elect & Engg. Works

Preeti Enterprises