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Annual Work Contract For Routine, Breakdown, Capital Maintenance And Assistance In Operation Work Of Cw And Acw System Of Unit 5&Amp6 (2X660 Mw), Csctpp, Rvunl, Chhabra-PART-A 1 Stop log gate 1.1 Maintenance of Stop Log Gate including replacement of worn out parts, rubber seals and gaskets. 2 Circulating Water, Auxiliary Circulating Water (Vertical Turbine) Pump 2.1 Decoupling of pump and motor, alignment and re- coupling i 375 KW ii 2250 KW 2.2 Maintenance & servicing of cooling water lines (Motor & Pump) i 2250 KW 2.3 Removal and re-installation of pump motor (including works mentioned under item No. 2.1) i 375 KW ii 2250 KW 2.4 Maintenance & complete overhaul of Non ReversibleRatchet(including all works mentioned under item No. 2.1 & 2.3) i 375 KW ii 2250 KW 2.5 Maintenance & overhaul of thrust bearing assembly (including all works mentioned under item No. 2.1 to 2.4) i 375 KW ii 2250 KW 2.6 Maintenance and overhaul of stuffing box assembly (including all works mentioned under item No. 2.1 to 2.5) i 375 KW ii 2250 KW 2.7 Blue Matching and scrapping of base & stool a. Blue matching i 375 KW ii 2250 KW b. Scrapping i 375 KW ii 2250 KW 2.8 Complete overhauling and maintenance of Pump including dismantling , replacement of worn out parts, bearings , reassembly, reerection, trial run and re- commissioning. (including all works mentioned under item No. 2.1 to 2.7) i 375 KW ii 2250 KW 2.9 Painting of bowl assembly, column pipes, enclosing tubes, bearing spiders and other associated parts of pump with two coats of super quality ready mixed Hi build epoxy with MIO paint and one coat of zinc rich primer epelix – 4 (Epoxy Primer) make Asian / Berger. (Including cost of paint) i 375 KW ii 2250 KW 2.10 Painting of discharge head, cooling line, motor stool, bearing assembly etc. with synthetic enamel paint grade a (Make Asian shade Z green one coat of primer and 2 coat of synthetic enamel paint). (Including cost of paint) i 375 KW ii 2250 KW 3 Horizontal Pumps 3.1 Complete O/H of following Pumps incl. Bearing Housing replacement, replacement of worn out parts, checking of shaft, removal of bends and all other works required for commissioning of pumps incl. alignment i 150 KW ii 37-45 KW iii 11-30 KW 3.2 Erection/ replacement of base frame/ plate for pump and motor incl. dismantling, reerection, leveling by sprit level, welding of shim plate and foundation bolt or any other work upto the stage of grouting including cutting welding ( Grouting of base frame with concrete cement shall be done by Civil Wing for vertical and horizontal pumps) i 30-45 KW ii Below 30 KW 3.3 Overhauling of Pumps (Excl. BearingHousing/ Impeller Housing), replacement of worn out parts for commissioning of pumps incl. alignment i 150 KW ii 37-45 KW iii 11-30 KW 3.4 Alignment of Pump with motor using filler gauge, dial gauge etc. i 37-150 KW ii 11-30 KW 4 Butterfly Valves, Gate Valves, Globe Valves, Ball Valves, Air Release Valves & Rubber Expansion Joints Butterfly Valves 4.1 Rubber soft seal of butter fly valve i Checking, inspection and re- setting of rubber soft seal including cleaning of seat ring by opening and fitting of manhole/inspection cover and recommissioning (Size 1950 mm to 2400 mm) ii Replacement of rubber soft seal (Size 1950 mm to 2400 mm) iii Overhauling and realignment of valve disc/ door, clamping ring(Size 1950 mm to 2400 mm) 4.2 Replacement/overhauling of rubber soft seal of butterfly valve including realignment of soft seal, replacement of worn out parts, gaskets and re- commissioning i Size 500 mm (Upto) ii Size above 500 mm to 800 mm 4.3 Maintenance and overhauling of gearbox of butterfly valves including dismantling, replacement of worn out parts, bearings, reassembly and re- commissioning i Size 500 mm (Upto) ii Size above 500 mm to 800 mm iii Size 1950 mm and above 4.4 Maintenance and overhauling of gate, globe, ball and air release valve including removal, overhauling, re-fixing, replacement of worn out parts, gaskets, lapping and recommissioning i Size 80 mm (Upto) ii Size 100 mm to 125 mm iii Size 150mm to 200 mm iv Size 250 to mm 400 mm Non Return Valves 4.5 Maintenance and overhauling ofNon Return Valve including removal, overhauling, refixing, replacement of worn out parts, gaskets, lapping and re-commissioning i Size 80 mm to 150 mm ii Size 200 mm to 500 mm Rubber Expansion Joints 4.6 Maintenance and overhauling of Rubber Expansion Joints including replacement of worn out parts, Gaskets, alignment& recommissioning i Size 500 mm (Upto) ii Size 1950 mm to 2200 mm 5 Miscellaneous 5.1 Checking of straightness and removal of bend within permissible limits of pump shaft, line shaft and head shaft of various pumps i Size50 mm below ii Size50 mm and above Painting 5.2 Per Coat of Black Epoxy Paint Make Asian Berger Gr. A. (Including cost of paint) 6 Basket Strainers 6.1 Maintenance & overhauling of basket strainer including cleaning of strainer baskets, minor denting of baskets if required, change of defective parts from each wing including associated valves & piping. i Basket strainer discharge up to 500 M3/hr. ii Basket strainer discharge 1900 M3/hr. iii Basket strainer discharge 3300 M3/hr. 7 Chlorination & Chemical Dozing System in CW Pump House Plunger Type Reciprocating Pumps 7.1 Overhauling of valve assembly including dismantling of suction/discharge side, replacement and servicing of worn out parts such as gasket, plunger valves, etc. and recommissioning i Chemical and Acid dosing Pumps 7.2 Overhauling of pump including dismantling of complete gear box, plunger, crank assembly, bearing, drum shaft, replacement of worn out parts, assembly and recommissioning including work mentioned under item No 7.1 i Chemical and Acid dozing Pumps Horizontal Pumps 7.3 Decoupling alignment and re-coupling of Horizontal Pumps i 5.5 KW (Upto) 7.4 Complete overhauling and maintenance pump including dismantling, replacement worn out parts, Bearings, reassembly, erection, trail run and re- commissioning i 5.5 KW (Upto) Air Blowers 7.5 Complete over hauling including dismantling of fan and cover, replacement of bearings, alignment and re commissioning i 5.00 KW (Upto) 7.6 Servicing, replacement of injector assembly by dismantling, replacement of gasket, worn out parts etc. Re-fitting and recommissioning including associated pipes and valves. Misc. Chemical Tanks 7.7 Cleaning of tanks from inside including accessories and dismantling of man hole covers/main flower cover/ vents/replacement of gaskets, refitting re–commissioning of level gauge glass etc. i Chemical/Acid dosing Tanks ii Acid storage/Absorption Tanks 7.8 Over hauling of agitator paddles/Tank stirrers including replacement of worn parts (bearing, bush) etc. 7.9 Arresting Chlorine leakage by tightening flange Joints, Valve gland, nut, bolts, union rings, replacement of lead washers, Teflon washer etc. if required 7.10 Over hauling/ repair/ replacement/ erection of UPVC pipeline by cutting and fixing solution i Size 150 mm (up to) 7.11 Overhauling of Vacuum regulator/ gas meter/ control valve/ Gas filter/ PRV/ evaporator assembly/ pressure gauge including replacement of worn out parts re-commissioning 7.12 Maintenance & overhauling of Chlorinator with its connection system i Size 150 Kg/ hr (up to) 7.13 Replacement of UPVC/ PVC Tee, Elbow, flange, bend, Reducer, Socket etc. i Size 150 mm (up to) 7.14 Replacement of Chlorine Tonner including change of lead washer and re-connecting Tonner to system (Lead washer to be supplied by Contractor ) 7.15 Repair /replacement of FRP/PP Tanks & pipes i Repair work of chlorine absorption tank ii Repair /replacement of FRP/PP pipes 8 Maintenance of trolley/Mono block for mounting chain pulley block up to 10T Capacity 9 Cleaning of CT Blowdown Tank 10 Cutting, welding pipe line, painting, Excavation and wrapping coating. 10.01 Gas cutting with gas cutter. 10.02 MS welding by electric plant (Double run Or required size of weld) 10.03 Piping welding by electric plant (Double run Or required size of weld) 10.04 Replacement includes fabrication, erection and dismantling of steel structural works, ladders, providing supports, platforms, modification of works including cutting, welding at any height and place in plant area including stacking of dismantled structural steel. 10.05 Replacment includes fabrication, erection and dismantling of MS/ GI water pipe line including cleaning, draining, cutting, welding, fabrication of reducers, tees, bends, supports etc including stacking of dismantled pipe line i Size 40mm (upto) ii Size 50 to 80mm iii Size 100 to 150mm iv Size 200 to 250 mm v Size 300 to 400mm vi Size 450 to 700mm 10.06 Painting on pipe line / valve / structure after cleaning surface by the wire brush including supply of paint. i Per coat of Red oxide primer (Make - Assam / Berger Gr.A) ii Per coat of synthetic enamel / aluminium paint. (Make - Asian / Berger Gr.A) 10.07 Letter writing on pipe line / equipment. i Letter Size 1" - 3" Length. ii Letter Size 3" - 6" Length. 10.08 Earth work in excavation for all lifts upto depth of pipeline clearance with cost of all labour, transportation of all equipments. 10.09 Earth work in backfilling after completion work as above. 10.10 Outside wrapping and coating with one coat of coal tartap By Hot method including the coat of all material, labour, equipments including all taxes. 1 Complete cleaning and maintenance of fore bay, open channel & including dewatering with submersible pumps (to be supplied by department), Removal of sludge, and its disposal by providing manpower as under in general shift 1.01 Unskilled 2 Daily Routine, Preventive and Minor Breakdown Maintenance Works of Cooling Tower & Cooling Water System as per details in Annexure-1 by providing manpower as under in general shift 2.01 Highly skilled (2 Nos.) 2.02 Skilled (2 Nos.) 2.03 Unskilled (4 Nos.) 3 Emergency Maintenance works of Cooling Tower and Circulating Water System as per details in Annexure-1 by providing manpower as under during operation 3.01 Skilled-1 person/shift 3.02 Unskilled -1 person/shift 4 Assistance in operation as per details in annexure -1 by providing man power. 4.01 Skilled -1 person/shift 4.02 Highly skilled -1 person/shift
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