Repairs to 300kva voltage stabilizer and motor of pumping unit no 1 installed at LIS Sai and Fabrication of base frame and foundation block of pumping unit no III along with allied works at Lift Irrigation Station, Kotheyparlah old.

Amount

Repairs to 300 kva voltage stabilizer and motor of pumping unit no 1 installed at LIS Sai.

Repairs to 300kva voltage stabilizer installed at LIS Sai by way of disconnecting incoming and outgoing power connections from voltage stabilizer. Draining of existing transformer oil in barrel. Shifting of voltage stabilizer and motorto nearest roadusing manual labour, tools and tackles, then to workshop by using carriage vehicle. Repair to voltage stabilizer at workshop by way of extracting out the inner frame, extracting out the 2 No’s damaged coils and rotary switches. Rewinding of 2 No’s coils using standard quality copper wire of appropriate gauge, varnishing with two coats of standard make varnish and proper insulation. Servicing of third coil. Replacementof gasket, providing/fitting of 2 no’s new rotary switches and refitting on the Bakeliteplate. Filtration of existing transformer oil and toping up with 150liters of fresh transformer oil after cleaning the tank to remove carbon deposits. Shifting of the repaired voltage stabilizer and motor to installed position at LIS Sai by mechanical transport. Installation of the voltage stabilizer by connecting incoming and outgoing power cables. Testing of voltage stabilizeron no load and full load conditions. Job includes cost of material including rebate on old copper scrap/ material, labourcharges, hire charges of tools and tackles, carriage charges, installation and testing charges at site.

Decoupling of 50 HP motor of pumping unit no I from pump and then dismantling the motor from the base frame. Repairs to 50 hp motor of pumping unit no I by extracting out old damaged winding manually and cleaning of stator slots. Inserting of insulation papers in slots, complete rewinding of the stator by using standard copper wire of requisite gauge. Making of connection coils in star delta. Locking of coils into the slots by using glass fiber wedges. Complete varnishing of the stator. Repair to rotor shaft by way of welding, turning and finishing to the size of bearings. Providing and fitting of bearingsnumber 6313 and 6310 on driving and non driving end, end terminals, nuts and bolts. Providing and fitting of new connection plate. The job includes manual labour, cost of material, tools & tackles etc. Complete job.

Rebate on Old Parts

Fabrication of base frame and foundation block of pumping unit no III along with allied works at Lift Irrigation Station, Kotheyparlah old.

Fabrication of base frame of Pumping Unit No. 03 at LIS KotheyParlah old. Complete dismantling of pumping unit from the suction and delivery lines by cutting of damaged / worn-out nuts and bolts using cutter and manual labour, and then de-coupling the pump and the motor, removing the electrical connections from the motor and then removal of nuts and bolts from the connection thimbles using appropriate tool spanners. Dismantling the pump and motor individually from the base frame, cutting damaged / worn-out nuts and bolts with the help of blade cutter, manual labour and then lifting of pump and motor with the help of chain pulley block using manual labour from its position and then removing the base frame from the foundation by means of cutting of damaged / worn-out foundation nuts and bolts using suitable cutting arrangement. Breaking of the existing foundation using jack hammer, manual labourupto the required depth as per the foundation bolts, extraction of old RCC foundation material using manual labour and dumping the material with a lead of 50 m from the pump room at position where irrigation land is not polluted using manual labour on head load. Fabrication of new base frame by means of providing and fitting of 5 inch ISMC channel and fabrication of base frame (5.5 feet length x 3.4 feet width) by means of welding the ISMC channels to form the base frame as per the site requirement . The job includes providing and fabrication of base support for motor and pump with height as per alignment of pump and motor. Drilling of holes for foundation bolts on base frame. Then filling of the dismantled excavated foundation with the RCC mix in the ratio of 1:1.5:3 and then curing the foundation. Filling of the foundation with RCC mix in ratio of 1:1.5:3, setting and curing of the concrete structure. Job also includes re-installation of pumping unit on the base frame by means of lifting and fixing of pump and motor using chain pulley block with the help of manual labour and installation of pump, motor on the base frame with the help of nuts and bolts of appropriate size. completely aligning pump and motor to avoid angular or liner misalignment. Providing and fitting of new nuts and bolts along with rubber gaskets. Making electrical connections and testing of pumping unit. Complete job includes cost of skilled / semi-skilled labour, material, tools & tackle, carriage charges to lift irrigation station on head load, charges for civil work. Note:- The Tenderers are requested to visit the site and quote the rate as per site conditions. Any modifications/ alterations of the job, absolutely necessary if required at the time of execution may be done as per actual site conditions.

Repairs to 200 mm diameter sluice valve on the delivery side of the pumping unit by way of cutting damaged/ rusted nuts and bolts, dismantling all the internal parts of valve. Fabrication/ replacement of new stem rod with square threads. Providing and replacement of new wedge nut, and repairs to wedge shape disc with seat ring. Providing and replacement of new graphite packing , gland plate with gland nuts, nuts and bolts with packing sheet. . Properly checking inner body of sluice valve for any cavitations voids or corrosion, filling of the cavities and finishing of the same.

Rebate on Old Parts

NATIONAL ELECTRO-MECH COMPANY

GANPATI ELECTRICAL AND MECHANICAL WORKS

PERFECT ELECTRICAL WORKS