MAINTENANCE AND REPAIR TO VARIOUS MAKE OF COOLING TOWER, AHUs OF ANY CAPACITY AND CONNECTED DUCTING AND ALLIED WORKS AT INS KALINGA, VISAKHAPATNAM

complete all as specified and directed.

70 TR capacity hub with 4 blades

100 TR capacity hub with 4 blades

150 TR capacity hub with 6 blades

180 TR capacity hub with 6 blades

S&F new cooling tower hub and fan including fixing,testing and commissioning of various capacity of AC plants,complete including Dismantling electrical connections, taking down existing cooling tower motor from cooling tower of the following capacity and carrying out the repairs by filling metal on the worn out portion of shaft,machining to the standard size of hub,removing the bend, checking the balancing all as directed by Eng-in-charge.

70 TR capacity

100 TR capacity

180 TR capacity

M&L for complete over hauling, servicing of cooling tower, FRP type, removal of complete scales, dirt etc. by using required chemicals, cleaning the sump louvers, PVC fills, fan assembly, renewal of spray nozzle with connected pipe, renewls of nuts, bolts, leak arresting of the FRP tank, replacing PVC fills and complete painting of the cooling tower all as specified and shaft bush and carrying out repair to cooling tower by taking down the choked PVC fills, segments, rusted structural supports, bolts & nuts repair to PVC segments cold water sumps, broken nozzles, cleaning the cooling tower fan assembly, overhaling of fan motor, sprinkler system including replacement of defective parts such as nozzles, mesh sprinkler PVC common header pipes valve, bolts and nut strainer, arresting of base leekages if any removing and cleaning of fungus complete including white washing the base complete all as specified and directed. Note :- PVC fills will be measured and paid seperately under relevant sch of item.

70 TR capacity

100 TR capacity

150 TR capacity

180 TR capacity

M&L for carrying out the chemical servicing /checking/ inspection of the Air Handling units & cooling coils by applying the non-aciditic scale removing agent to the fins area of the cooling coil, copper tubes, remove the complete scale deposit across the coil, flushing through and complete blowing out the dirt, cleaning the fan impellers, filter section, fan section and complete cleaning of filters, tightening of all bolts & nuts, renew the rusted bolts & nuts checking the alignment of the drive set, greasing of blower motor, checking of electrical connection, cleaning of air filter, replacement of unserviceable bearing renewal of rusted sheet metal screws, applying synthetic enamel paint over a coat of primer on the rusted portion and testing & commissioning the Air Handling Units of AC Plant complete all as specified and directed.

60 TR Capacity

70 TR Capacity

120 TR Capacity

M&L for disconnecting electrical/ mechanical connections defective unserviceable Motor from cooling tower, taking down the defective Induction Motor of any make / model shifted to work shop for dismantling motor, remove burnt out winding from startor and rewinding the stator with same gauge super enamelled copper conductor with necessary insulation materials, varnishing back to re-assembling motor including replacement of both end bearings and remaining complete all after complete the job motor shifted to site and reinstalled at its original position including allignment with electrical connections and testing for best performance complete all as specified and directed of the following capacities :-

Motor up to 5 HP

Motor 5HP to 10 HP

Supply, laying and testing, galvanised iron pipe, medium grade including all fittings such as tee, bends, elbows, sockets, reducer, tee union etc of medium grade, ISI marked fixed to walls/ floors/ ceilings/ trenches including groove cutting for concealed plumbing as required at site and making good the damaged surfaces including taking down old unserviceable pipe line complete all as specified and directed for the following bores:-

25 mm bore

40 mm bore

Supply only power contactor 3 pole MNX 50

Supply only power contactor 3 pole MNX 32

Supply only power contactor 3 pole MNX 25

Supply only auxiallry contactor MNX-A1

Supply only auxiallry contactor MNX-A2

Supply only power contactor 3 pole MNX 18

Supply only power contactor 3 pole MNX 9

Supply MCB 63 amps 4 pole

Taking down the damaged unserviceable, corroded MS ERW pipe of any type dia any size upto height 10 meters with necessary scoff holding arrangement and clearing the site complete all as specified and directed.

Material & Labour for the return air ducting between AHU room and AC space , fabrication erection of return airducting with necessary angle iron existing size channel and MS sheet, Thermal insulaion, and wheather proffing and painting with betumin paint outer surface of the duct , all the work at the height upto and upto 12 meters from the ground , the work including necessary scaff holding and clearing the site , deposing the derbis complete including taking down all as specified and directed.

M & L for Insulation of M S Pipe with PUF slab 40 mm thick with and including applying bituminuous compound and GI cladding with 26 gauge GI sheet, high themocol pipe section to the chilled water line by appling industrila quality betumin compound of 40/90 grade, sealing the joints , covering with tar coated hassian clouth ,chicken mesh and 12 mm thick cement plastering and painting all the work as per the site condition, height of the lines are including and upto 5 meters of height , complete all as specified and directed. For the following size of chilled water line at various AC plants.