REPAIR/MAINT OF COOLING TOWERS AND CONNECTED WORKS OF CENTRAL AC IN TECH AREA AT AF STN GWALIOR

Amount

Supply and fixing in replacement including testing of drier filter of refrigerant gas of any description and in any position complete all as specified and directed. Make : Sporlan/ danfoss

M & L necessary tools/plants for finding leakage in condenser piping chiller system and rectying defects including welding/brasing as necessary by arranging N2 gas for checking and oxygen gas for welding etc all as directed and testing for satisfactory operation of plant by the contractor complete all as specified and directed. Note:- (i) The rate quoted against item is demeed to be inclusive of labour for filling of refrigerant gas. However, the refrigerant gas shall be issued under Schedule 'B' free for filling.

Supply only water temperature sensor (LWP & EWT) a/w 5 mtr wire suitable for Blue Star AC plant. Make :- Blue Star

S&F in repair temperature gauge (Thermometer) suitable for condensing water circulating line, measuring range 0 - 50 degree C, of any description and in any position complete all as specified and directed. Make : H-Guru / Accurate or superior make as approved by GE.

S&F in repair water pressure gauge of range 0 – 150 PSI suitable for 100mm dia GI/MS pipe of any description and in any position complete all as specified and directed. Make : H- Guru / Accurate or superior make as approved by GE

M&L for scrapping & preparation of old painted MS pipe and painting with two coats of synthetic enamalled paint over a coar of red oxide primer of approved colour including marking arrow for direction of liquid flow all as directed of following size of pipe .

Supply, fixing and testing of water flow switch including disconnecting and taking out existing unserviceable water flow switch any description and in any position complete all as specified & directed Make :- Honeywell/Danfoss

Supply & Fixing Aluminium fan set with hub size 1500 mm & 4 blade complete all as specified and directed.

M&L for de-scaling and cleaning of condenser pipe chiller chocked pipe, water circulating pipe lines ,valves, condenser (heat Exchanger) to cooling tower, circulating concentrated de-scaling solution (scale balaster -copper friendly chemical and neutralizer ) mixed with water in suitable proportion till the deposits/scale is removed to maintain required pressure, the chemical should be circulated through pump, cleaning the condenser and connected pipe and components (2/3 Units) of compressor by suitable size of drill rod, wire brush including dismantling and connecting all dismantled components in proper position after servicing/overhauling /greasing/cleaning and replacement of packing gasket 3mm thick, nuts, bolts with washer, testing of water line for leakage, complete all as specified and directed by Engineer-in-Charge for the following AC plants :- Note :- Descaling solution shall be paid separately under relevant item of schedule "A". (a) Capacity of cental AC Plant (2x50 + 1x 50TR standby) Chilled water type at 24/25 MMPU & RDM

(b) Capacity of central AC plant (2x35 TR + 1x 35 TR standby) DX type at MMS

(c) Capacity of (2x85 TR + 1x 85TR standby) Central AC plant Chilled water system at P-77

(d) Capacity of ( 2x26 TR + 1x 26 TR stnadby) Central AC plant Chilled water system at Bomb dump & Mirage

(e) Capacity of (2x11TR + 1x11 TR standby) central AC plant chilled water type FSP & NEW BOMB DUMB

(f) Capacity of (1x6 TR + 1x6 TR Standby) Chilled water at EWS & P-77

(g) Capacity of (2x11TR + 1x11 TR standby) package Type water cooled at Avonic Lab

(h) Capacity of central AC plant (2x33 TR + 1x 33 TR standby) DX type at 26 MMPU

(j) Capacity of ( 2x38 TR + 1x 38 TR syandby) at WSA Bomb Dump

(k) Capacity of central AC plant (2x37.5 TR + 1x 37.5 TR standby) at SES & LDP

(l) Capacity of central AC plant (2x62 TR + 1x 62 TR standby) at EWS

M&L for Servicing of existing cooling tower FRP type, of any description & in any position complete including dismantling all old connected parts/items line motor PVC filling, MS/GI pipe, sluice valve, stop valve, steel structure frame etc servicing, overhauling,cleaning, painting with one coat of exsting paint (approved colour) and fixing of serviceable parts in position, removing & replacement of defective/unserviceable parts with new parts, reassembling the cooling towers and connected parts/items fixied in position for connecting to existing system and testing at site on full load to the entire satisfaction of the EIC complete all as specified and directed for the following capacity:- Note (i) The replacement of defective/non functional parts shall be measured and paid seperatly as `supply only' under appropriate items of sch `A'/BOQ and fixing rate for new items are deemed to include under this item. (a) Cooling tower of plant capacity 40 - 80TR

(b) Cooling tower of plant capacity 100 to 170 TR

(c) Cooling tower of plant Capacity 15 - 22 TR

(d) Cooling tower of plant capacity 6-10 TR

Supply and fixing in replacement including testing of thermostatic expansion valve and incl welding as required at site etc complete as specifed and directed . Make : Emerson /Danfoss/Ecco/Sporlan

Supply only PVC filling blocks of size 600mm x 300mm x 150mm suitable for cooling tower complete all as specified and directed. Make: - MIHIR/SUVIDHA/ AVIRATS

Supply and fixing Pilot aolenoid valve any size and description complete all as specified & directed. Make : AVCON/ SPORLAN /Danfoss

M&L for copper tubing of size 1/4'' connecting to Gauges/LP/HP/OP control and other connections of compressors including dismantaling and taking down broken and unservicable copper tubing complete all as specified and directed.

M&L for brass tee of size 1/4", connecting to Gauges/LP/HP/OP control and other connections of compressors including dismantaling and taking down broken and unserviceable brass tee complete all as specified and directed.

M&L for copper /brass hand shut off valves of size 1/4", connecting to Gauges/LP/HP/OP control and other connections of compressors including dismantaling and taking down broken and unservicable hand shutoff valves complete all as specified and directed.

M&L for brass connector long neck of size 1/4" , connecting to Gauges/LP/HP/OP control and other connections of compressors including dismantaling and taking down broken and unservicable brass connector complete all as specified and directed.

Dismantaling bottom waterline CI filter and replacement of trainer jalli including nuts bolts works complete all as specified & directed of following size:- (a) 200mm

Supply only rotary sprinkler with head cagin with frame and PVC header assembly of following capacity of cooling tower complete including PVC pipe of suitable size and length as required complete all as specified and directed of following size of AC Plant :- (a) up to- 50 TR

(b) 50 to 100 TR

(c) 100 to 170 TR

Supply & Fixing cooling tower motor flanged type with extended shaft 5HP & 700 RPM( to be fixed in Sl No.10.01/10.02/10.03/10.04) complete including testing complete all as specified and directed. Make :- Sabar/Kirloskar/CG

Supply & Fixing monoblock motor and pump set suitable for capaity of 12.5HP & 1440 RPM including testing complete all as specified and directed. Make :- Sabar/Kirloskar/CG

S&F PVC plate suitable for insertion on fillers of cooling tower as per sample complete all as specified and directed for the following cooling towers :-

(a) Cooling tower of plant capacity 40 - 80TR

(b) Cooling tower of plant capacity 100 to 170 TR

(c) Cooling tower of plant Capacity 15 - 22 TR

(d) Cooling tower of plant capacity 6-10 TR

S&F PVC Nozzles of size 2 to 3 inch suitable for fixing in cooling tower complete all as specified and directed.

Supply and fixing PVC float valve of size 25mm and model as per existing complete all as specified and directed.

Supply and fixing Gun metal gate/globe valve of size 25 mm dia with iron wheel head, screwed both ends for iron pipe, ISI marked complete all as specified and directed

Supply and fixing Gun metal gate/globe valve of size 20 mm dia with iron wheel head, screwed both ends for iron pipe, ISI marked complete all as specified and directed

Supply and fixing gun metal Air release valve of size 15 mm dia complete all as specified and directed.

Supply and fixing gun metal Air release valve of size 20 mm dia complete all as specified and directed.

Supply and fixing PVC mesh suitable for following cooling tower of plant capacity complete all as specified and directed :-

(a) Cooling tower of plant capacity 40 - 80TR

(b) Cooling tower of plant capacity 100 to 170 TR

(c) Cooling tower of plant Capacity 15 - 22 TR

(d) Cooling tower of plant capacity 6-10 TR

Supply only scale blaster-copper friendly De-scalling chemical (in 50 ltrs sealed packing) complete all as specified and directed Make:- Blue star /carrier/voltas

Supply only neutralizer to neutralize the effects of scale blaster (in 50 ltrs sealed packing ) complete all as specified and directed Make :- Blue star /carrier/voltas

Disconnecting from system, strip opening of refrigerant u/s compressors completely and re-assembling the dismantled Compressor with re-fixing the serviceable parts in position and replacement of the unserviceable/defective parts with new parts as required at site, connecting the compressor and making perfectly leak proof after cleaning the oil sump, oil pump, connecting rod, piston, liner etc and filling of compressor oil, charging of refrigerant gas to the required pressure and testing the compressor complete all as specified and directed by the Engineer-in-Charge for following make & model of compressors :- (a) Model SMC 2– 65 of make Accel.

(b) Model SMC 4 – 100 of make Accel.

(c) Model 5H46 of make VOLTAS.

Supply only of the following spare parts for Accel make compressors Model SMC 2-65& SMC 4-100 complete all as specified and directed :- Note : The element of fixing & testing of the items is deemed to be included in the rates quoted by the contractor for respective Schedule `A' item No. 32.01& 32.02 herein before. (a) Connecting rod

(b) Shaft seal assembly

(c) Main bearing of suitable size

(d) Half section bearing of suitable size (set of Two )

(e) Cylinder liner

(f) Piston only

(g) Oil pressure regulating valve

(h) Oil pump assembly complete

(j) Oil filter Assembly complete with filter mesh, housing, gasket, nut bolts etc.

(k) Piston ring (Set of two)

(l) Oil scraper ring

(m) Bush with piston pin

(n) Valve spring for suction, discharge valve plate

(o) Discharge valve assembly

(p) Nut 8MTx6.5mm (Spl)

(q) Discharge valve retaining ring plate

(r) Discharge valve seat

(s) Discharge valve retaining plate

(t) Gasket set complete for SMC -2- 65

(u) Unloading ring with pin

(v) Spring for unloading ring

(w) Suction valve retaining plate

(x) Suction valve retaining ring plate

(y) Crank case heating element

(z) Suction strainer

(aa) Safety valve

Supply only of the following spare parts for Make –Voltas compressors Model 5H46 complete all as specified and directed :- Note : The element of fixing & testing of the items is deemed to be included in the rates quoted by the contractor for respective Schedule `A'/BOQ Sl No 32.03 herein before. (a) Connecting rod bearing inserts

(b) Seal end main bearing

(c) Piston pin

(d) Seal end bearing washer

(e) Compressor ring

(f) Seal end thrust washer

(g) Pump end bearing washer

(h) Oil Ring

(j) Suction valve disc

(k) D V Guide lock washer

(l) S V spring

(m) Valve lifter pin

(n) Valve lifter spring

(o) Seal cover plate

(p) Lock ring

(q) Felt filter

(r) Nyloc nut

(s) Discharge valve disc

(t) Seal lock plate

(u) D V spring

(v) Seal assembly

(w) Main bearing pump end

(x) Gasket set

(y) Oil pump package

(z) Suction strainer

(aa) Safety valve

Supply and fixing in replacement water pressure switch,including dismantling and taking out existing unserviceable any description and in any position complete all as specified and directed Make - Danfoss.

Supply and fixing in replacement including testing of chiller water flow valve with electric control and other works as requried at site incl welding as required at site etc complete as specifed and directed . Make ; Siemons Model No SQK 34.00 IP42 or equivalent make as approved by GE.

M/s Shanti Enterprises

Flint India

GUPTA ENGINEERING WORKS

M/S Rakesh Verma

M/s A.K. Trading Co.