Value based Annual rate contract for Mechanical Maintenance jobs of scraper conveyors in Urea bagging of Bagging plant in RCF Trombay Unit.

Amount

JOB NO 1 – MECHANICAL MAINTENANCE JOBS OF SCRAPER.

1-Tightening of B.E. / Scraping boom chain

2-Replacement of tie rod of B.E.

3-Replacement of tie rod of boom chain

4-Replacement of top shaft of B.E.

5-Repair / Joining of broken duplex drive chain

6-Replacement of Duplex drive chain

7-Replacement of blades of boom chain / Bucket of B.E. chain

8-Replacement of links of boom chain / Bucket of B.E. chain including inner, outer & center link

9-Replacement of take up unit of boom chain

10-Replacement of traveling G/B

11-Replacement of slewing G/B

12-Replacement of Main Drive G/B

13-Replacement of Fluid Coupling FC-20

14-Replacement of cup-springs of B.E.

15-Replacement of cup-springs of Scraping boom chain

16-Replacement of oil seal of output shaft of slewing gear box

17-Replacement of input pinion of slewing G/B with new bearings and oil seal

18-Replacement of two idlers with bearings of gear train.

19-Replacement of idler pin of gear train.

20-Opening, Cleaning the internals and box up of cover of main drive chain and gear train

21-Replacement of lantern sprocket with shear boss and shear pins

22-Replacement of shear boss with shear pins

23-Replacement of shear pins

24-Replacement of bottom shaft of B.E.

25-Replacement of main drive shaft of scraper

26-Replacement of Luffing rope

27-Repositioning of derailed chain with bucket / blades from guide angle of scraper

28-Replacement of simplex traveling chain of scraper

29-Repair / Joining of broken simplex traveling chain

30-Tightening of Slewing/ Main drive/Long travel Gear box & Idler cover Foundation bolt

31-Replacement of Idler Gasket

32-Replacement of BE Top shaft bracket

JOB NO 2 – MECHANICAL MAINTENANCE JOBS OF BELT CONVEYOR IN UREA BAGGING PLANT

1-Replacement of pulley’s with bearings -

1.a-Head Pulley (ET-1 to ET-13 conveyors) (dia 16” to 24”)

1.b-Tail /Take up pulley (ET-1 to ET-13 conveyors)(dia 12” to 20”)

1.c-Bend / Snub pulley (ET-1 to ET-13 conveyors) (dia 12” to 20”)

1.d-Head pulley - Slat conveyors

1.e-Tail pulley - Slat conveyors

2-Replacement of Gear Box -

2.a-Gear Box Size - 6" to 8"

2.b-Gear Box Size – 10” -14”

2.c-Gear Box of Slat Conveyor

3-Replacement of Coupling/sprocket half (one side only)

3.a-3a. Size from 6" to 8" (Grid member couplings)

3.b-3b. Size from 9" to 12” (Grid member couplings)

3.c-3c. Size from 13” and above (Grid member couplings)

3.d-4a. 4 to 6 holes ( pin bushes of coupling)

3.e-4b. 8 to 10 holes ( pin bushes of coupling)

3.f-4c. 12 holes ( pin bushes of coupling)

4-Replacement of bearings & re-positioning of pulley

4.a-Replacement of bearings for conveyor pulley with Plummer block (one side only)

4.b-Replacement of bearings for conveyor head pulley with Plummer block (gear box side)

4.c-Repositioning of conveyor belt pulley along with bearing

5-Replacement of Oil seals of gear box

5.a-Replacement of oil seal of G/B - non drive end

5.b-Replacement of oil seal of G/B - drive end by removing coupling and realignment with dial gauge.

6-Replacement of Skirt rubber/ Skirt Board/ Scrapers of Conveyor belt.

6.a-Replacement of skirt rubber/Scraper rubber of conveyor belt

6.b-Replacement of Skirt Rubber board of conveyor belt

6.c-Replacement /Repair of belt scrapers [primary / secondary] of conveyor belts.

7-Replacement of Frames and rollers of Conveyor belt

7.a-Replacement of troughing rollers (conveyor width 500-1000 mm)

7.b-Replacement of return rollers(conveyor width 500-1000 mm)

7.c-Replacement of guide rollers(conveyor width 500-1000 mm)

7.d-Replacement of troughing roller frame along with rollers

7.e-Replacement of return roller bracket (2 No) / Frames along with rollers

8-Repair/ replacement of tensioning arrangement of conveyors

9-Replacement of hold back of G/B online position with oil seal

10-Removal of conveyor belt off center

11-Crack welding after edge preparation and grinding in running feet

11.a-Repair of chute / Diverter of bulk material and Equipment’s

11.b-Equipment related structure

12-Conveyor steel structure related jobs

13-Neem coating system related jobs

13.a-Replacement of Mother/ baby/day tank pump (2-6 M3/hr)

13.b-Stainer replacement (Mother/ Baby/day Tank Pump)

13.c-Replacement of base frame of Mother/ Baby/Day tank

14-MDS Trolley related jobs

14.a-Removal of derailment

14.b-Wheel replacement

14.c-Drive pinion replacement

14.d-Driven wheel replacement

14.e-Drive end bearing replacement

AL AAQIB ENGINEERING WORKS

Balaji Engineering Works