Budget Proposal- 2020-2021 UWSS to NDD-Pump set

Amount

Transformer overhauling at RWPH Kalathara

Charges for dismantling of HV side cable and HV connection and HV neutral connection and remove the cable box,then dismantling of LV side cable box and remove LV cable connection and neutral connection remove the cable box and fitting the HV and LV cable and cable box in old position after repairing etc.complete.

Draining of transformer oil completely from 500KVA transformer and conservator tank and collecting it in empty drums/tank(600 Lits capacity) and stacking site for filteration etc. complete.

Dismantling of cover,HV busing,LV busing carefully after removing connections and keeping it in vertical position and covering the busing system with proper protection to avoid to enter dust and moisture inside,dismantling explosion vent,breather connection,conservating tank and piping,disconnectioning of all valves,dismantling of control cables,thermometers and its probes etc.including cleaning the dismantled parts very carefully and removal of old gaskets,replacement of rubber bushes and washers,replacement of old bolts and nuts etc.in the case of bushing,providing Hylum sheet of approximate thickness in case of explosion vent,checking the working condition of all components,checking the function of buchholz relay etc.complete.

Charges for cleaning of transformer body(inside) conservator tank fully and removing of all carbon deposits in it. Cleaning of core and coil,inspection of bushes and bolts,jet washing of core and winding by tinner wash,removing of sludges deposited inside transformer core and winding, ensuring no blockage of oil duct,arresting the oil leakage of radiator,providing new insulation to terminals and leads etc.complete

Replacing top body gaskets by supplied new one of good quality and cut to required size and numbers fitting carefully and checking the fitteness and arresting of oil leakage through bushes and insulators etc.complete

Servicing of transformer off load tap changer etc. including repairing of mechanical off load tap changer etc.complete

Refitting of top cover,HV busing,LV busing and neutral busing of both HV & LV side carefully after making connections,refitting of xplosion vent,brether and its connections. Providing oil resistant type fiber glass insulation to all live parts before assemblying. Providing all valves and checking its open and close position before providing to protect leakage etc.complete

Charges for 24 Hours full vacuuming of 500KVA transformer and vacuum oil filling etc. complete

oil filteration of 500 MVA transformer continously for obtaining sufficient BDV value and IR value including vacuum refilling of top up oil and filtering the top up oil continuously for obtaining sufficient BDV value and IR value etc. complete.

Supply and providing 11KV porcelin bushing and giving connection to HT and LT side of transformer etc. complete

Supply and erection of Pumps

Zero velocity valve

Supply of a Zero Velocity Valve of size 450 mm dia of a reputed manufacturer and installing near the pump house suitable for the Pumping main of 450 mm dia CI pipe to control the water hammer. The valve shall be provided with water hammer control spring loaded surge protection check valve and valve shall be suitable to use for Pressure rating of PN1.6.The static head of the Pumping main is 101 m and the discharge of the Pump set set is 13.75 MLD.The end connection shall be of flanged end and the Barrel Disc and others shall be made of Mild steel confirming to IS :2062 Gr.Fe-410-W,the guide Rod and main shaft shall be made Stainless steel to AISI -410,the seat ring shall be made of Stainless steel to AISI 304 and Disc seal shall be made of EPDM / Nitrile.The spring shall be made of spring steel .The zero velocity valve shall be provided with bypass arrangement to keep pressure balance on both side of the Disc and it also prevent creation of vacuum in the down stream of side, so that to resist the back flow of the water column during pump trip or closure,thus preventing the positive surge by reducing the energy of the water hammer.The rate inclusive of the cost,conveyance charges,laying ,flanged jointing,fabrication charges including cost of flanges,welding,grinding,cutting charges etc complete as per the direction of the departmental officers in charge.( chamber of size 2 X 2 m inside size with Manhole cover and frame( weight -208kg) .)

Standardisation of Electrical installation

Standardization of electrical installations at Seemavila PH and Uzhappakkonam PH including charges for electrical installation and standardization in pump house after disconnecting all electrical connections then carefully dismantling brunt cables from wall mounted three phase meter panel board to floor mounted cubical main switch board (MSB), dismantling brunt cables from floor mounted cubical MBS to soft starters, dismantling the rusted wall mounted three phase meter panel board then install newly fabricated wall mounted three phase meter board on wall after making and drilling the suitable holes on the wall for fixing the three phase panel board with sutiable size anchor bolt, fixing HRC fuse unit base and neutral link, laying one run of new Al armored UG cable from wall mounted three phase meter panel board to floor mounted cubical MSB, laying one run of new Al armored UG cable from floor mounted cubical MSB to starters laying one run of new Al armored UG cable from floor mounted cubical MSB to glanding both end of three run cables with best quality new brass cable gland as per the correct measurement, terminating the cable grand on MSB and soft starters after core cutting the panel with metal core cutter, crimping the cable end with suitable size aluminum ring socket using hydraulic crimping tools, connecting the cable as per the correct diagram then testing and trial running etc. complete including labour charges and excluding cost of supplying materials for the work. (Cable and fuse link unit servicing the panel board and electrical installations, replacing the incomer set in the panel board, cable glands, cables, supplying and fixing MCCBs of various ratings, brass compression gland, aluminum legs, earthling glands, supplying and laying aluminium power cables of various ratings in the cable trays, earth electrodes ,brakers isolators ,motor protection relays and providing earthing using earth plate including accessories and masonry enclosure with cover plate etc and getting approval from Electrical Inspectorate. complete

Standardization of electrical installations at RWPH Kalathara including charges for electrical installation and standardization in pump house after disconnecting all electrical connections then carefully dismantling brunt cables from wall mounted three phase meter panel board to floor mounted cubical main switch board (MSB), dismantling brunt cables from floor mounted cubical MBS to soft starters, dismantling the rusted wall mounted three phase meter panel board then install newly fabricated wall mounted three phase meter board on wall after making and drilling the suitable holes on the wall for fixing the three phase panel board with sutiable size anchor bolt, fixing HRC fuse unit base and neutral link, laying one run of new Al armored UG cable from wall mounted three phase meter panel board to floor mounted cubical MSB, laying one run of new Al armored UG cable from floor mounted cubical MSB to starters laying one run of new Al armored UG cable from floor mounted cubical MSB to glanding both end of three run cables with best quality new brass cable gland as per the correct measurement, terminating the cable grand on MSB and soft starters after core cutting the panel with metal core cutter, crimping the cable end with suitable size aluminum ring socket using hydraulic crimping tools, connecting the cable as per the correct diagram then testing and trial running etc. complete including labour charges and excluding cost of supplying materials for the work. (Cable and fuse link unit servicing the panel board and electrical installations, replacing the incomer set in the panel board, cable glands, cables, supplying and fixing MCCBs of various ratings, brass compression gland, aluminum legs, earthling glands, supplying and laying aluminium power cables of various ratings in the cable trays, earth electrodes ,brakers isolators ,motor protection relays and providing earthing using earth plate including accessories and masonry enclosure with cover plate etc and getting approval from Electrical Inspectorate. complete.

THANKANPPAN CONTRACTOR

Bidder Name

THANKANPPAN CONTRACTOR

S.PRABHURAM