REPAIR/MAINT ELECTRICAL OPERATED AND MANUAL OPERATED GANTRIES/CRANES AT AF STATION GORAKHPUR

M &L for Carrying out load testing of EOT crane of capacity 2 TON to prove the satisfactory operation of electrical controls motors gears boxes protective device system interlocks mechanical componeants like wire rope Wels scecctions of the crane in all Motions (LT CT Hoist in high full load and testing of crane in over load at 110% and deflection test all as per IS:3177 of 1977 through Competent person of UP factory rules or any accredited agency as approved by GE(AF) Gorakhpur, duly certified including all consumables completed all as specified. (Note: (i) Necessary pre calibrated certified loads(50 Kg pieces for higher alttitude) with load cell digital/ analogue type and Hydraulic mobile crane at site required for carrying load test shall be arranged by contractor and the rate quoted shall be inclusive of the same. (ii) Contractor has to arrange necessary tarpaulin/plywood to unload weights on the floor and ensure that the electrostatic floor/floor surfaces is not scratched/damaged during testing. (iii) Contractor submit two sets of original load test record alongwith certificates to Department.

All as per item No 01 herein before but for HOT crane of capacity 05 TON.

All as per item No 01 herein before but for HOT crane of capacity 03 TON.

All as per item No 01 herein before but for HOT crane of capacity 02 TON.

Comprehensive maintenance,preventive maintenance & periodical repairs of electrically operated overhead traveling (EOT) / Hand operated overhead traveling (HOT) complete including Material and Labour for periodic inspection/servicing to be carried out, and making/keeping the cranes serviceable, installed in various technical bldgs , including the following:- (i) LONG TRAVEL MOTION AND CROSS TRAVEL MOTION (a) Checking Gear box oil level and filling with required oil and rectification of leakages if any. (b) Brake adjustment (c) Checking of Long travel & cross travel wheel for any noise/malfunctioning. (d) Checking grease of Geared couplings, nut tightening and replacement of grease nipple . (e) Checking of oil in Hydraulic thruster brake, rectification of leakages if any and filling with required quantity of oil. (f) Checking of electric motor connections, insulation resistance value etc. (g) Checking the cut-off at extreme ends with the limit switch. (h) Checking and greasing of shaft pedestal. (ii) HOIST MOTION (a) Checking Gear box oil level and filling with required oil and rectification of leakages if any.b) Brake adjustment (c) Checking of main bearings of the Rope Drum including greasing the same (d) Checking grease of Geared couplings and nut tightening. (e) Checking of oil in Hydraulic thruster brake, rectification of leakages if any and filling with required quantity of oil. (f) Checking of electric motor connections, insulation resistance value.

(g) Checking wire rope for any damage & greasing the rope. (h) Adjustment of the rotary limit switch. (j) Checking of Bearing of the Hook and greasing the same. e) Checking of oil in Hydraulic thruster brake, rectification of leakages if any and filling with required quantity of oil. (f) Checking of electric motor connections, insulation resistance value. (g) Checking wire rope for any damage & greasing the rope. (h) Adjustment of the rotary limit switch. (j) Checking of Bearing of the Hook and greasing the same. (Contd.../-) (iii) ELECTRICAL PANEL (a) Checking the contactors for overheating or flashing. (b) General checking of contacts and connections. (c) Cleaning of control panels and checking of connections. (d) Checking of connections of VVVF drives/other drive, calibrating VVVF drive to get smooth movement & maximum efficiency / other drives for smooth functioning of the same. Details of Cranes under mentioned are located at Various Technical bldgs

02 Ton capacity EOT crane - 03 No

05 Ton capacity HOT crane - 03 No

03 Ton capacity HOT crane - 06 No

Taking down the unserviceable trailing cable and supply and fix trailing cables of size 4 core 6 sq.mm (elastomeric rubber cables) Annealed tinned flexible copper conductor, EPR insulated, cores laid up with fillers (wherever necessery) and binder taped, PCP outer sheathed cable of 1100 volts conforming to IS: 9968 (pt-1) 1988 & (P-2) laid on existing cable trays/ crane structures using MS clamps/ cleats, glands, copper lugs and connecting in panel/ equipment all as specified and as directed.