SE/M-I/MTPS-II/MP/OT67/20-21.

Amount

Charges for dismantling, cleaning & reassembling the mill reject top gate complete assembly & its reject gate operation hydraulic cylinder shaft assembly from the mill reject system, lowering down to the mill floor, inspection of reject gate operation hydraulic cylinder internals, renewal of worn out parts, seals, gaskets etc… if necessary after providing of necessary chain block arrangement for leading, lifting and positioning of gate assembly. (Required qty. of Non- Metallic gaskets, Fasteners will be supplied by TANGEDCO at free of cost)

Charges for dismantling, cleaning & reassembling the mill reject bottom gate complete assembly & its reject gate operation hydraulic cylinder shaft assembly from the mill reject system, coal collecting box one by one lowering down to the mill floor, inspection of reject gate operation hydraulic cylinder internals, renewal of worn out parts, renewal of man hole frame asbestos rope seals, gaskets etc… if necessary after providing of necessary chain block arrangement for leading, lifting and positioning of gate assembly. (Required qty. of Non- Metallic gaskets, Fasteners will be supplied by TANGEDCO at free of cost)

Charges for opening the screw conveyor top cover plate, dismantling, cleaning the screw conveyor shaft from the screw conveyor assembly, inspection of both end plummer block bearings, renewal of worn out parts, bearings, gland ropes etc… if necessary & finally reassembling to the screw conveyor assembly. (Plummer block body with bearings will be supplied by TANGEDCO at free of cost)

Charges for leading, lifting, transporting of retrieved worn out screw conveyor shaft from mill to outside workshop, reconditioning the worn out portion of bearing seating, gland rope flange seating by welding the uneven outer surface of screw conveyor shaft, machining the uneven welded surfaces and finally roller shaft trueness checking etc… and return to MTPS-II mills works site. (Transporting of shaft for machining works under contractors scope)

Charges for decoupling the gear box with motor from the screw conveyor shaft, dismantling & inspection of the gear box internals, cleaning and renewal of worn out spares, oil seals, bearings etc… and finally reassembling the same with the screw conveyor shaft, alignment of the gear box shaft to screw conveyor shaft, renewal of new gear box oil and finally checking the trial run of gear box without noise including the cost of oil seals, bearings etc...

Charges for cutting the reject gate top cover for providing inspection door of size 150 mm x 200 mm, drilling the four corner of dia 18 mm hole, welding the 4 Nos. of M16 x 60 mm full thread stud, cutting the inspection door lid of size 200 mm x 250 mm x 8 mm tk., drilling dia 18 mm hole x 4 Nos. over the lid plate for easy removal of foreign material inside the gate moulding piece travel path, removal of broken bolt & internal thread cleaning of size M16 x 15 Nos. for the trouble free operation of mill reject system gate assembly including the cost of M.S. plate, Stud bolt etc...

Charges for removal of eroded flat of size 35 mm x 780 mm x 20 mm tk. x 2 Nos. from the gate body & damaged 4 Nos. of existing compression spring, fabrication of new flat of size 35 mm x 780 mm x 20 mm tk. x 2 Nos. by EN 08 material with both side mirror polishing, drilling, fixing the new flat by using counter sunk screw of size M10 x 40 mm x 6 Nos. & inserting dowel spilt pin of size dia. 6 mm x 40 mm x 4 Nos. for the end of both flats, Cost of 4 Nos. high strength helical compression spring of size OD: 68 mm x ID: 50 mm x length: 80 mm with 5 Nos. spiral winding, polishing the gate main shaft damaged outer surface & internal thread cleaning for mounting the gate shaft yoke including the cost of flats, counter sunk screw, dowel pin and compression springs etc…

Charges for fabrication of yoke for reject gate shaft by EN 08 material for renewal of damaged gate yoke including the cost of materials etc…

R K ENGINEERING CONTRACTOR

MARSSAL ENTERPRISES