PERIODICAL MAINTENANCE TO OVERHEAD GANTRY, EOT CRANE AND ALLIED WORKS AT AF STN BAGDOGRA UNDER GE (AF) BAGDOGRA.

Amount

Note 1:- (Applicable for all parts/items) : The bidders/contractors are advised to read tender documents & all corrigendum/amendments and general condition of contracts before entry/quoting the rates. Note 2:- Attention to bidder is hereby invited to upload revised BOQ if published during their bid submission. Uploading of incorrect/ pre-revised BOQ shall be treated as non bonafide and rejected. Fixed credit has been given in technical documents which shall be taken into account during acceptance of bid/tender.

Preventive maintenance/Periodical Maintenance and servicing of Overhead Gantry, EOT Crane of capacity 2 to 10 Tone installed at various location of 20 wing Air Force Station, Bagdogra all as describe as under:- NOTE:- 1. Minor repairs and consumables like mobil, grease, gear oil, electrical and electronic spares and works of petty nature to be included in unit rates for servicing. 2. Spares parts will be paid separately in relevant items. 3. Full load test shall be carried out with dead load for capacity upto 10 Ton by contractor with user Rep and test report produced. 4. Dead Load arrangements and shifting shall be made by contractor. 5. Periodical Maintenance be carried out every three month interval as per Appx 'A' (Location and Maintenance schedule att.) 6. Maintenance shall be caried out by authorized OEM/Dealer only.

A. MECHANICAL:- 1. General checking of the Crane. Checking cranes for any loose fasteners/bolts etc., vibration, oil leakage and missing parts/guards during preventive maintenance and rectifying the same. 2. Topping oil in the gear boxes, EHT thrusters. 3. Checking lubrication of crane. Ensuring good lubrication using grease gun at points specified in manual. 4. Lubrication of wire ropes (Eg. Dorsa or Vitalife spray etc.,) 5. Checking of LT/CT wheels including bearings, wheel shafts, couplings, pedestals, gears, etc. for any abnormal sound. 6. Drive mechanisms- Checking of LT, CT and hoist motions, replacement of gear boxes, bearings, oil seals, gaskets, gears, input/output shafts, couplings, coupling bolts, drive shafts, pulleys, etc. for any play or abnormal sound. 7. Wire Ropes- Replacement of worn out/ broken/ crushed/ damaged wire ropes, arranging for wire rope clamps. 8. Hook block of hoists- Replacement of damaged/ worn out hooks. Replacement of damaged / defective pulleys and any other damaged components of the hook blocks. 9. Checking and replacement of crane end stoppers on LT and CT motion. 10. Restoration of trolleys at the time of derailment. 11. Checking and repairing bogie system on end carriages and repairing damages to structures. 12. Checking and replacement of brake units / brake liners, replacement of springs, adjustment of studs etc.

B.2 ELECTRICAL: 1. Attending breakdown of electrical nature. 2. Replacement/minor repair of motors. 3. Replacement of fuses/fuse holders in electrical panels. 4. Cleaning of Contact points of contactors. Replacement of contactors or contact points, if necessary. 5. Replacement of cables. 6. Repair/replacement of incoming mains switches on panel. 7. Replacement/checking of brake units. 8. Maintenance of junction boxes of CT, LT, MH, AH, Pendent, etc. 9. Repair/Replacement of cable trolleys. 10. Repairs/Replacement of floor operation push button pendent including push buttons 11. Repair/Replacement of master control switches. 12. Topping/Replacement of oils in brake units. 13. Tightening loose connection on terminal boards. 14. Checking/Repair/Replacement of CT, LT rotary and counter weight limit switches. B.3 ELECTRONICS: 1. Checking of Radio Remote Cont rol Syst em. 2. Minor repair/Replacement of remote control t ransmitter and receiver 3. Replacement of PCB or push buttons of RRC in case of faults. 4. Replacement/Adjustment/Tuning of variable frequency drives (VVVFD), Entering parameters when drive is changed.

Supply and Fixing only FLP 2 Way switch

Supply and Fixing only cable trolly

Supply and Fixing only Brake liner Set

Replace current collector for smooth operation

Hoisting motor ( 5.2KW, 3PH, SC ) reconditioning

Cross Traverse motor ( 0.55KW, 3PH, SC ) reconditioning

Long Travel motor ( 2.2KW, 3PH, SC ) reconditioning

Trolley/Crab wheel assembly maintenance & replacement of defective part; any of wheel, bearing, spacer, shaft, coupling, brake, gearbox

Hoock block maintainance & replacement of defective part; any of pullies, rope lock, pulley bearing, Thurster bearing, cover & fastners

Equiliser pulley maintenance & replacement of defective part; any of pulley, shaft, bearing

Rubber Buffers replacement

Limit switch for any of motion (long travel/cross traverse/hoisting )

VFD (Variable frequency drive) : (Defective) Locate defective VFD, take it down, reccondition it & reinstall,for any motion. (Make: As per existing)

Cross traverse cable replacement .

Cross traverse cable trollies maintenance. Note:- Item No. 02 to 16: (i) Make/Model as per existing up to 10 Ton capacity (ii) Labour rate deemed with item no. 01

Dismantling and taking out U/S, defective cross Traverse rails both side of track ,at DB -18 and DB -11 of Bomb Dump area by dismantling Bridge, cross travers motor, hosting motors Bridge wheel assembly, etc complete all as reqd for repairing of rails,hot and cold alignment of rails grinding where reqd, preparing smooth surface of rails replacement of U/s Parts,re-fixing the rails rer assembling all parts complete .Test run for proper functioning of EOT crane and overhead unit without slippages and jerks.smooth run to is be insured with all movements to be completed in designated time period with full load complete all as directed. (Location DB-18 & DB-11) Note:- (i) Load Test shall be carried out with dead load and arranged by contractor. (ii) Test certificate produced by contractor with user rep signature alongwith photographs. (iii) User letter/ Certificate produced by contractor before execution of work and approval obtained from Accepting Officer. (iv) Rate is included the cost of building repairs, if required at site.