MTPS I CHP II Preventive and breakdown maintenance work of roller screen A1 B1 and B2 secondary crusher A1 A2 B1 and B2

Amount

Charges for cleaning of spillage coal from roller screen A1, B1 & B2, secondary crusher A1,A2,B1 & B2, belt feeders and all floors of Secondary crusher house complete.

Charges for segregation of coal powder / and leading of coal powder and spillage coal from DXT 13, 14 in CHP-II area and loading into nearby conveyors /TANGEDCO Tipper as directed by the Engineer incharge at site. The rate includes labour charges and consumables etc complete.

Charges for opening the man hole door of secondary crusher and releasing the iron pieces, foreign materials and coir gunny bags from secondary crusher A1,A2,B1 & B2 and closing door, tightening all the bolts & nuts of secondary crusher A1/A2/ B1/B2.

Charges for greasing of secondary crushers A1,A2,B1&B2 plummer block and pillow block bearings, belt feeders 7A1,7A2, 7B1, 7B2 & 13A2 plummer block bearings, Roller screen A1,B1&B2 driveshaft and roller shaft bearings and DXT 13 & 14 bearings.

Charges for opening the top cover of secondary crusher, after removing the floor cover of roller screen, DXT pipe line bend, checking and tightness of all the bolts & nuts, inspection of all the internal parts and hammer rings, closing the top cover, floor cover, DXT pipe bend and conducting trial run in secondary crusher A1/A2/ B1/B2.

Charges for by-passing (removal of 5 nos. roller shaft) in RS A1/B1/B2 after the dismantling of top cover & side cover 2 nos. top gear casing and refixing the same.

Charges for by-pass closing (assembling of 5 nos. roller shaft) after the dismantling of top & side cover in Roller screen A1/B1/B2.

Charges for breakdown maintenance of 12.5 tonne electrical hoists 4nos. at secondary crusher house including dismantling, lowering, replacement of bearings, coupling half, intermediate shaft, spider etc and refixing the same conducting trial run complete.

Charges for dismantling of DXT pipe flanges of various sizes of dia from 115 cm to 180 cm at various elevations in A and B stream of Secondary Crusher house and cleaning the choke manually by using the man holes provided and re erection of all pipe flanges complete.

Charges for opening the coal supply chute top cover of secondary crusher, after removing the floor cover of roller screen, DXT pipe line bend, loosening bolt & nuts and releasing the coal choke by manually and closing the top cover, fixing and tightening.

Charges for attending of breakdown works (i.e changing of 30 nos. crusher drive “V” belt SPC 8500 in secondary crusher A1,A2,B1 & B2.

Charges for dismantling the suspension bars, removal of all worn out hammer rings weighing new hammers, balancing and fixing the new hammer rings along with suspension bars and tightening of dummy plug in SCR A1/A2/ B1/B2.

Charges for removing all the existing hammer rings weighing and balancing with retrieved hammer rings (if not available new hammers) and fixing the same along with suspension bar in SCH A1/A2/ B1/B2.

Charges for dismantling the worn out breaker plate (1 set) and fixing new available spares in SCH A1/A2/ B1/B2 including cage plates welding and adjusting works, lead and lift etc.

Charges for dismantling the worn out screen plates (35mm slot and 50mm slot) after the dismantling of breaker plates and fixing new spare screen plates in SCH including cage assembly plates welding adjusting and aligning works.

Charges for assembling whole set (24 nos.) roller shaft in roller screen A1/B1/B2.

Charges for skirt rubber, scrapper rubber replacement and adjustment in belt feeders 7A1, 7A2, 7B1,7B2 & 13A2.