WORK OF DISMANTLING OF 100 MVA TRANSFORMER , ITS SHIFTING , SHIFTING AND ERECTION OF NEW 160 MVA TRANSFORMER AND MODIFICATION OF MULSIFYRE SYSTEM AND OTHER ASSOCIATED WORK AT 220 KV SUBSTATION , BARAHUWA UNDER ETD-II , GORAKHPUR

Amount

PART-A

Following works is to be carried out at 220 KV S/s Barahuwa for replacing 220 KV / 132 KV , 100 MVA T/F ( MITSUBISHI make) by new 160 MVA T/F .

Dismantling of existing Mulsifyre system , Air pipe line, water pipe lines and other associated ancillaries of 100 MVA T/F and safe shifting to required place with all cost of men , T&P and other associated work.

Dismantling of following old & used equipments along with Structure ( if required) by opening of Nut & Bolt , opening of Jumper also removal of earthing and safe shifting of LA , Surge Monitor , Structure , P.I. and all other associated work .

245 KV Post Insulator.

145 KV Post Insulator.

Complete dismantling of 100 MVA , 220/132/33 KV T/F and accessories after opening of HV/ LV side Jumpers , removal of earthing and opening of cable connection of Protection system and fan / pump control , draining of T/F Oil from radiators and conservator tank , oil pipe lines of each phase of 3x33.3 MVA T/F ( all 03 phase R,Y,B ) T/F oil upto required level in 209 Ltrs. capacity oil drums , removal of all 03 phase R, Y, B radiators , conservator tank , oil pipe line , all bushings , turrets , fan motors, marshalling box, RTCC Panel etc. blanking the radiators , oil pepe lines , conservator tank , turrets etc. with proper gaskets along with nut and bolts to complete the job satisfactorily including peoper stacking . All labor and T&P shall be provided by contractor at his own cost.

Shifting of 100 MVA T/F main tank of each phase of 3x33.3 MVA T/F (All 03 phase R, Y, B ) from plinth to near 20 Mtrs.

Additional shifting 300 Mtrs. @ 5 Mtrs / Job

Complete drain out the T/F oil from main tank in 209 Ltrs. Capacity of drum of 100 MVA ( 3x33.3 MVA ) , 220/132/33 KV T/F with all cost of men , T&P and other associated work .

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

Shifting of main tank of 220/132 KV , 160 MVA T/F from unloading place up to plinth about 20 Meter distance including turning of tank if required at 220 KV S/s Barahuwa.

Additional shifting 400 Mtrs. @ 5 Mtrs / Job

Complete Erection of 220 /132 KV , 160 MVA T/F by erection of radiators , conservator tank , bushing , their turret , connecting oil pipe line , cooling fans , motor drive mechanism of tap charger , RTCC panel , oil pump and associated pipe line etc. to complete the job satisfactorily including first filling of oil in tank , radiators , oil pipe line , conservator tank etc. and attending the oil leakage if any satisfactory completion of work including safe handling and shifting of all accessories of new 160 MVA T/F such as radiators , conservator tank , bushing , cooling fans , marshalling box , RTCC panel , oil pipe lines etc. from stored place at 220 KV S/s Barahuwa to erection site including other associated work also if required for completion of job satisfactory.

Complete evacuation of 160 MVA T/F main tank and filling of dry air of point - 40C or better in vacuum up to pressure of 0.25 Kg. / Cm2 and the again evacuation the T/F tank after required time interval ( approx. 12/24 Hrs. ) using centrifusing machine . The work shall be including connection pipe of machine as required measuring due point value of dry air after every cycle till the required value is achieved ( each cycle treated as 01 Job) or filling dry nitrogen with high purity cylinder having due point 70C to 75C under vacuum from top value of the T/F up to pressure of 5 PSI and maintaining the same in the tank for 12 Hrs. including cost of Nitrogen Gas and Nitrogen Gas filling device (DRY AIR PLANT / DRY NITROGEN USED AS PER INSTRUCTION OF SITE SUPERVISOR) .

Filling the fresh T/F oil in oil tanker from 209 Ltrs. Drum by centrifusing machine and centrifusing oil to increses by BDV of oil up to the desired value.

Create the vacuum inside the T/F tank up to the standard value of 760 Hg and maintain it for 24 Hrs. Filling the oil Step by Step in 160 MVA T/F.

Centrifusing of complete T/F oil by connecting centrifusing pipes , circulating the transformer oil through 160 MVA T/F main tank in T/F tank or oil tanker by connecting centrifusing machine to be provided by the contractor and taking the BDV values of the oil periodically till the required value of the oil is achieved as per direction of Supervising Engineer at 220 KV S/s Barahuwa . All the T&P , labor , centrifusing machine and other associated arrangements shall be provided by the contractor at his own cost.

Carrige of oil tanker 40/20 KL including loading , unloading and carriage approx. distance 150 Km.

Laying , dressing and binding of cable including fixing of cable tray support structure and termination of cable marking and its ferruling as per cable schedule and interconnection including shifting of old cable as per requirement of RTCC panel , marshalling box , driving mechanism , OTI , WTI , Bucholz relay , PRV , Cooling fans , pumps , OLTC marshalling box etc.

Earthing of T/F body , Neutral bushing , Radiator bank Structure , Cooling fan , marshalling bax , driving mechanism box , OLTC and RTCC panel at 2 point using 75x10 , 50x6 and 25x6 mm MS Flat and 40 mm MS Rod including the cost of MS Flat and Rod including painting of different size.

Preparing and fitting of ACSR Twin Zebra / Moose conductor jumpers on 220 KV side by cutting of conductor and fixing of equipments .

Preparing and fitting of ACSR Twin Zebra / Moose conductor jumpers on 132 KV side by cutting of conductor and fixing of equipments .

Special delta earthing for 220/132 KV 160 MVA T/F consisting of fabrication of Delta Set with 03 Nos. 40 mm dia meter size 6 meters long electrodes the placing inside the ground connecting all the 03 electrodes with 75x10 mm MS Flat 700 mm deep and connecting the same with earth mat at 02 place (MS Flat and MS Rod shall be provided by the department) .

Erection of Auxiliary Structure for Equipment including shifting of material from store to site erection as per drawing using necessary nut , bolt and washers and fabricating / modifying holes etc. if required material , labour and T&P etc.

Safe shifting of following equipments from store to site , its erection along with required base modification of Structure and other work Earthing etc. (Along with Structure).

245 KV Current Transformer

145 KV Current Transformer

Packing of HV , T/F bushing of dismantled 100 MVA T/F ( Wooden box will be provided by the Contractor) and its shifting up to proper storage place.

Packing of LV , T/F bushing of dismantled 100 MVA T/F ( Wooden box will be provided by the Contractor) and its shifting up to proper storage place.

Conducting testing by arranging appropriate equipments for following testing by CPRI , Noida (BDV / PPM / DGA / TAN DELTA / RESTIVITY ) including assistance in testing of 160 MVA T/F i.e. Bushing testing , binding testing , IR Value , Stability Test and all other tests required for its commissioning as per direction of Site Engineers and Supervising Engineers.

PART-B

Remodeling / modification , erection , hydraulic testing and commissioning of complete Mulsifyre system by installation of high velocity automatic water spraying and fire detection system on 160 MVA , 220/132 KV T/F by using old material of Mulsifyre system installed on 100 MVA T/F and new Item required include providing of additional material laying , fixing and fitting of G.I. Pipe lines complete with elbows , tees , sockets , flanges , bends , fire nozzle of required size Q.B. Detectors with Quartzoid Bulb etc. after due cutting providing by required gaskets / packings or required size includes installation of 80 mm dia G.I. Pipe support with round clamps along with earthing of Pipe support after construction of RCC foundation for pipe supports and finally painting of complete water pipe line with 02 coat of post office red color paint , Air pipe lines in Sky Blue color support pipe in Black color and earthing flats in Bus Green color of standard make paint after applying one coat of red oxide primer, with all cost of men , materials and T&P etc. The detail of required job as follows:-

Providing and Fixing of G.I. Pipe "B" Class per IS Specification ( IS Code : 1239) following size complete with elbow to socket and ends with all part.

25 mm Dia

50 mm Dia

65 mm Dia

80 mm Dia

Installation of HV Nozzle Project HD make

Installation of QB Detectors

Re-Erection of dismantled item from old 100 MVA T/F as per following details (i) 25 mm dia (ii) 50 mm dia (iii) 65 mm dia (iv) 80 mm dia .

Preeti Enterprises

SAI KRIPA LIFT SHIFT COMPANY