NIT NO. 12(M-3)ITEM NO. 01

Closing of suction, delivery and header valve with the help of manual labour to avoid leakage from the line while opening of dismantling joint of the delivery line of pump set no 1.

Cutting of nut bolts with the help of gas cutter welding machine and other tools tackles of 600mm dismantling joint and leaked delivery gap piece of 1.4 mtr. long x 600mm dia. in delivery line.

Taking out dismantling joint and leaked gap piece from the line to put them on the safer place with the help of EOT crane and heavy duty manual labour arrangement.

Fixing of blank flange on both ends delivery valve and pump side reducer to avoid leakage from the line.

Repairing of Leaked M.S. Gap piece by cutting of damaged portion from the pipe with the help of gas cutter after cleaning of rust from the pipe with the help of hand grinder etc. welding of M.S. patch at damaged portion to avoid any leakage from the line on load.

Taking out blank flange from the valve side of the deliver line of pump set no 1 and fixing of gap piece in line with the help of EOT crane and heavy duty manual labour arrangement under the supervision of expert supervisor.

Providing of nut bolts and washer.

Providing of neoprene rubber packing sheet.

Providing of D-Joint rubber ring.

Fixing of dismantling joint in line after cleaning of rust from the dismantling joint with the help of hand grinder.Proper alignment with delivery line, fixing of rubber ring with dismantling flange to avoid any leakage from the line with proper care.

Disconnection of Electric connections of motor form panel to starter and motor & associated cables with the help of manual labour, tools and tackles as required at site taking all safety measures for pump set no -1 which is inoperative from long time and totally jammed.

Decoupling the pump and motor after removing the tyre coupling. Opening of nut bolts of motors from the base frame & shifting the motor to the safer place for cleaning and varnishing.

Dismantling of motor atsite by removing of its parts one by one i.e. first dismantling of slipring, caron brush & its holders, opening of both side covers and taking out rotor from the stator in the supervision of expert technician.

Cleaning the air dust of core & winding of motor with high pressure air and cleaning solvents. Varnishing with Dr. Back Varnish, baking and applying of moisture proof paint.

Replacement of damaged bearings of motor and making bearing sheet in proper manner. Bearings will be provided by the departmentally.

Cutting of nut bolts/studs of upper dome of the pump with the help of gas cutter and taking out upper dome of the pump with the help of EOT crane for cleaning of rust etc from the rotating assembly of the pump.

Taking out rotating assembly of the pump from the pump body. Cleaning of pump body from inside with chemical solution and emery paper etc.

Closing of upper dome of the pump by providing fixing of new nut bolts/studs and closing of shaft points from both ends (DE & NDE) with wooden gullas to avoid leakage of water from the pump.

Cleaning of complete rotating assembly parts one by one includes efficiency rings, impeller, sleeves, water throw rings, chuck nuts etc.

Repairing of pump body by taking out broken gland studs from the body by drilling and welding. Cleaning of threads from inside with the help of metric tap and die set thread tools.

Opening of upper dome of the pump body and making the split casing machining surface smooth by application of the above rotating assembly in the pump body. Fasteners of split casing. Fixing of bearing housings, gland packing fastening thoroughly the pump casing.

Replacement of damaged bearings of pump and making bearing sheet in proper manner. Bearings will be provided by the departmentally.

Reassembling of complete motor parts by fixing of rotor in the stator, greasing of bearings, fixing of both side covers with connection leads. Fixing of slipring after cleaning of slipring rings, replacement of carbon brush etc. complete.

Fixing of complete motor by fixing & tightening of foundation bolts after proper alignment of motor coupling with pump coupling plate, electric connection of motor.

Opening of suction, delivery and header line valve with the help of manual labour arrangement of set no 1.

Testing of pump set and delivery line of the pump set no 1 on no-load and on-load.

Closing of suction, delivery and header valve with the help of manual labour to avoid leakage from the line while opening of dismantling joint of the delivery line of pump set no 3.

Cleaning the pipe line of set no-3 after the delivery NRV under the chequred sheet to check the leakage point by cleaning the surface of pipe with the help of hand grinder from all sides.

Repairing of leakage in M.S.Pipe with proper welding work.

Cleaning of cement etc. from the pipe where the pipe is going inside the C.I paddle pipe to avoid breaking of wall. Cleaning of cement with manual means without damaging the pipe with proper care from the whole circumference of the 600mm dia. pipe.

Drying the surface of the pipe and applying of waterproof chemical to make it leak proof from the whole circumference of the pipe.

Opening of suction, delivery and header line valve with the help of manual labour arrangement of set no 3.

Testing of pump set and delivery line of the pump set no 3 on no-load and on-load.

Primer and painting charges of delivery line and specials of set no 1 & 3.

Transportation charges for man & Material including loading/ Unloading etc. as per site requirement at a suitable place as per direction of engineer-in-charge.

Raj Engineering Co. (BID ID -1540581)

M G Traders and Engineers (BID ID -1540265)

MITTAL TRADING COMPANY (BID ID -1540078)