PREVENTIVE MAINTENANCE OF CRANES, FIRE FIGHTING SYSTEM AND ITS CONNECTED ITEMS AT MIL STN JASAI UNDER GE(A) BARMER

Amount

Comprehensive maintenance of EOT crane of capacity 5 Tone of every three months period to check the serviceability and make serviceable by identifying the serviceable/unserviceable parts for renewal and change unserviceable parts to make it fully functional at designed RPM & torque reassembling the same position, testing, electrically and mechanically to its load capacity etc. complete to the entire satisfaction of engineer in charge. Note:-The spare part required shall be measured & paid separately under item No 2 to 20 ( Make of crane:- Rockwell, Cranex private ltd) (i) LONG TRANSVERSE (LEFT) (a) Gear box oil level check and filling with required oil and rectification of leakages if any. (b) Assembly vibration (c) Break adjustment (d) Long transverse wheel checking for any noise.(e) Geared couplings - grease checking and nut tightening. (f) Checking of Hydraulic oil in thrustor brake.(g) Checking of electric motor connections. (h) To check the cut-off at extreme ends with the limit switch. (ii) LONG TRANSVERSE (RIGHT) (a) Gear box oil level check and filling with required oil and rectification of leakages if any. (b) Assembly vibration (c) Break adjustment (d) Long transverse wheel checking for any noise. (e) Geared couplings - grease checking and nut tightening. (f) Checking of Hydraulic oil in thrustr brake.(g) Checking of electric motor connections. (h) To check the cut-off at extreme ends with the limit switch.

(iii) CROSS TRANSVERSE (a) Gear box oil level check and filling with required oil and rectification of leakages if any. (b) Assembly vibration (c) Break adjustment (d) Cross transverse wheel - checking for any noise. (e) Geared couplings - grease checking and nut tightening. (f) Checking of Hydraulic oil in thrustor brake. (g) Checking of electric motor connections. (h) To check the cut-off at extreme ends with the limit switch. (iv) HOIST MOTION (a) Gear box oil level check and filling with required oil and rectification of leakages if any. (b) Assembly vibration (c) Break adjustment (d) Grease checking for the main bearings of the Rope Drum (e) Geared couplings - grease checking and nut tightening. (f) Checking of Hydraulic oil in thrustor brake. (g) Checking of electric motor connections. (h) Checking wire rope for any damage & greasing. (j) Adjustment of the rotary limit switch. (k) Bearing grease checking of the Hook. (v) ELECTRICAL NETWORK (a) Checking the contractors for overheating or flashing. (b) General checking of contacts and connections. (vi) DOWN SHOP LEAD (a) Checking the alignment and rectification. (b) Cleaning of the moving/sliding objects.

Supply and fix in replacement of 45 Amps, power contactor suitable for 3 phase, 415 volts, 50Hz AC.

Supply and fix in replacement of FRLS , 4 core 6 sqmm PVC insulated PVC sheathed multistranded copper conductor cable.

Supply and fix in replacement of FRLS , 4 core 4 sqmm PVC insulated PVC sheathed multistranded copper conductor cable.

Supply and fix in replacement of FRLS , 12 core 1.5 sqmm PVC insulated PVC sheathed multistranded copper conductor cable.

Supply and fix in replacement of PVC cable carrier suitable for carrying the cable size upto 4 core, 6 sqmm copper cable.

Supply and fix in replacement of limit switch for LT/CT motion suitable for 5 Ton Crane.

Supply and fix in replacement of limit switch for LT/CT vertical motion suitable for 5 Ton Crane.

Supply and fix in replacement of break liner of LT and CT motion suitable for 5 Ton capacity EOT crane.

Supply and fix in replacement of break liner of main hoist suitable for 5 Ton capacity EOT crane.

Supply and fix in replacement of push button switch spring type in red or green coloured suitable for 5 Ton capacity EOT crane.

Supply and fix in replacement of 40 Amps, MCB, triple pole, C curve 10KA.

Supply and fix in replacement of 6 to 32 Amps MCB, triple pole, C curve 10KA.

Supply and fix in replacement of MCB 6-32 Amps, MCB,Single pole C curve 10KA.

Supply and fix in replacement of MCB 5-30 Amps, MCB, SPN, C curve 10KA.

Supply and fix in replacement of Gear oil suitable for crane.

Supply and fix in replacement of Floor operated pandent control panel flame proof push button moving with crane and operating at 110 volts duly supported by wire rope.

M & L for carrying out repairs to Flame proof Squirell case induction motor half an hour rated 415 volts 50 cycle per second 3 phase AC flame proof, fan cooled of capacity 1.0 HP Enclosure confirming to protection IP 55 Horizontal Flange Mounted (any other mounting than B3),continuously rated (S1) suitable for operation on 415+/- 10% V,3 Phase 50Hz+/- 5% AC supply with ambient 50ºC,with temperature rise limited to Class "F" insulation with super enameled copper winding wire of appropriate gauge, Bearings for supporting the rotating shaft, Stator core, insulation and varnishing dismantling existing motor from foundation after disconnecting electric connection transporting the same at work shop for repair and back at site after repair, reassembling, commissioning and testing etc complete all as specified and directed by Engineer-in Charge.

M & L for rewinding of Transformer of capacity 250 VA having primary side 0-415 volt and secondary side 0-110 V AC., including dismantling, removing the core coil assembly from transformer remove the weak /unserviceable primary coil assembly rewinding with correct gauge super enamelled copper wire including drying, baking etc complete and remove the secondary coil assembly remove the insulation rewind with same coil and re-insulated. Assembling the primary and secondary coil in core, re-assembling the transformer complete refill with transformer oil, install, test and commissioning complete all as specified.

Supply and fix in replacement of Flame proof Switch socket and plug five pin 32 Amps

Comprehensive maintenance of Fire fighting System of every month period to check the serviceability and made serviceable by identifying the serviceable/unserviceable spare parts and changing unserviceable parts to make it fully functional at designed RPM & torque reassembling the same position, testing, electrically and mechanically to its load capacity etc. cmplete to th entire satisfaction of engineer in charge. (Note:- The required spare parts shall be measured & paid separately under item No 22 to 33 below as required) (i) Checking the pumping system and its alignment.. (ii) Checking the bearing of pump & motor sets and the lubrication system. (iii) Check the mounting of pump and motor sets. I(iv) Checking the packings for pumps and valves including foot valves in sump and roof tanks, gate valves, non return valves and globe valves, etc. Replace packing gland by approved non-asbestos type as necessary. (v) Removal of dirt and blockage in sump tanks. (vi) Check necessary adjustment for pumps, motors, switch gears, starters, float switches and all other equipment in connection with the pumping system both in pump room, the storage tanks and at the site of submersible pump and surface mounted pump installation. (vii) Check coupling pins and bushes.

Supply and fix in replacement of Single phase preventer MP-4 / MP-3 Type

Supply and fix in replacement of Bearing Suitable For 20 HP pump & Motor

Supply and fix in replacement of Bearing Suitable For 60 HP pump & Motor

Supply and fix in replacement of Foot Valve ball type for 100 mm bore

Supply and fix in replacement of Foot Valve suitable for 80 mm bore

Supply and fix in replacement of Non return valve 100 mm bore

Supply and fix in replacement of Wheel valve brass inlet 80mm dia and out let 65 mm dia

Supply and fix in replacement of Non percolating Reinforced rubber lined hose pipe of inlet 63mm bore with fixing arrangement for fire hose. roll of 30 Mtr length

Supply and fix in replacement of Nozzle for outlet fire hose made of brass of size 65 mm dia

Supply and fix in replacement of Sluice valve 80mm dia PN 1.6 brass spindle with hand wheel.

Supply and fix in replacement of monoblock submersible pump of cap 0.5 HP single phase with necessary incoming and outgoing pipe line for priming of fire fighting pump.

Supply and fix in replacement of Pressure Gauge as per Existing size

M & L repairing to centrifugal pump set by dismantling the pump opening cleaning, threading the shaft and replacement of warn-out parts like shaft sleeve, bushes, impellers, glands, ball bearing gasket etc assembling and testing complete of 60 HP motor.

M & L repairing to centrifugal pump set by dismantling the pump opening cleaning, threading the shaft and replacement of warn-out parts like shaft sleeve, bushes, impellers, glands, ball bearing gasket etc assembling and testing complete of 20 HP motor.

M & L rewinding of centrifugal pump set motor 20 HP 3 phase 415 volts 50 Hz by dismantling and removing the burnt out copper winding cleaning the slots of stator thoroughly and rewinding the stator with polyester based copper wire of the same gauge with ‘E’ class of insulation and applying varnish, earring the stator winding and assembling all parts of motor pump commission & testing complete.

M & L rewinding of centrifugal pump set motor 60 HP 3 phase 415 volts 50 Hz by dismantling and removing the burnt out copper winding cleaning the slots of stator thoroughly and rewinding the stator with polyester based copper wire of the same gauge with ‘E’ class of insulation and applying varnish, earring the stator winding and assembling all parts of motor pump commission & testing complete.

Excavation in trenches not exceeding 1.5 metres wide and not exceeding 1.5 metres in depth for foundation or laying/taking out existing pipe etc and getting out in any type of soil complete all as specified and as directed.

Returning, filling in , including spreading, leveling, watering and well ramming in layers not exceeding 25 cm in any type of soil complete all as specified and as directed.

Removing excavated material not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and as directed.

Testing and checking of proper functioning of fire hydrant, wherever found leakge through out length of MS pipe which are involved in this fire fighting system mark that place, Taking up or down with connection from trenches, walls, floors etc including removal from site and fix at same position after welding complete all as specified and as directed for the following sizes :- Note: Excavation and earthwork etc will be measured and paid separately.

Laying, connecting, jointing and testing of MS Pipe up to 200mm dia in any length at new location/same location, laid in trenches/ fixed on wall where ever required in item 41.00 above complete all as specified and as directed.

Supply, laying & fixing in repair of Suction GI pipe of pump medium grade (ISI marked) of size 80 mm bore with all fittings laid in trenches/fixed on PCC pillars or fixed to walls etc. complete all as specified and directed by Engineer-in-charge.

M & L painting of fire hydrant pipes by scrubbing of old painted surfaces and applying two coat of synthetic enamel of 'Fire Red' colour over one coat of red oxide primer complete all as specified and directed by Engineer-in-charge.

M&L in repair for Proper functioning of Programme logic control circuit panel for main pump sets for its automatic operation and maintain the pressure of 6 to 7 Kg/cm2 i.e whenever the pressure reduces in the system, the pump shall automatic start. The stopping of main pump is manual.

M&L in for Proper functioning control circuit panel for jockey pump sets for its automatic operation i.e whenever the pressure reduces in the system, the pump shall start automatically and when pressure reaches rated system pressure then it should automatically switched OFF.

M.D. CONSTRUCTION CO.