CWE/CHM(U)-77/2024-25 REPAIR/ MAINTENANCE OF CENTRAL AC PLANT AND CONNECTED ITEMS AT COMMAND HOSPITAL (WC) UNDER GE(U) CHANDIMANDIR

Amount

Organizing visit of skilled technician/ Engineer of OEM (which is Clivet) for routine check of central AC Plant of capacity 5 x 225 TR located at command Hospital (WC) for the followings :- (i) Checking, Testing and providing consultancy and to prepare a report as per format decided by GE for necessary repair to be carried out and providing necessary testing report of each Central type AC plant unit. (ii) replacement of defective parts if required, by the skilled technician/ engineer of OEM. (iii) routine servicing of equipments to prevent brakdown of plant. The entire equipments will be serviced in presence of skilled technician.

Detail of Central AC Plant of capacity 5x 225 TR are as under:- (i) Chiller 225 TR Make : M/s Clivet = 05 Nos. (ii) Cooling tower twin fan motor 5 HP = 05 Set. (iii) Condenser Pump Set 40 HP Make: Grunfos=05 Set. (iv) Primary pump set Make : Grunfos= 05 Set. (v) Secondary pump set Make : Grunfos = 05 Set (vi) VFD Make : ABB compatible up to 06 Pump set.=02 Set.

(vii) Hot water Gen Set 350 KW Make : Rapid Cool = 03 Set (viii) Hot water Pump Set Make: Grunfos =03 Set. Condenser pipe line from 80mm to 300mm dia= 01 Set (ix) Chilled water pipe line of various capacity from AC Plant to AHUs=01 Set. (x) Hot water pipe line of various size and capacity from AC Plant to AHUs=-01 Set. (xi) Control accessories such as temp gauge, pressure gauge, fire damper, electric actuator, 2-way motorized valves, butterfly valves, check valves strainer etc. installed in Central AC Plant as well in AHUs at different locations = 01 Job. (xii) HVAC panel installed at Central AC Plant =01 Job.

(xiii) Control panel for control of AHUs and other accessories =01 Job. (xiv) Ducting with diffusers/Grilles affixed with above mentioned AHUs. LDB panels installed at AHUs=08 Nos. (xv) Control cables laid from Central AC Plant to AHUs room/PUF panel room =01 Job (xvi) Any other accessories associated with central AC plant at Command Hospital Chandimandir. (xvii) Air handling units complete including butterfly valves, balance valves, fire damper and other electrical accessories.

Note: (a) Necessary repairs and parts to be replaced will be paid separately under respective items here-in-after. (b) Contractor will arrange necessary stationary etc to the Engineer of OEM for the visit to be carried out as directed by engineer-in-charge.

(c) Minor spares such as nuts, bolts, washers, aluminum lugs, grease or any spare part required for satisfactory operation of AC plant other than mentioned in this CA here-in-after are deemed to be included in unit rate quoted by the contractor. Nothing extra shall be entertained on this account.

(e) If Contractor fails to repair/ replace any faulty items within 24 Hours after entry of fault in log sheet, a panel recovery of Rs. 2500/- per day after 24 hours shall be recovered from payment due to contractor without any formal communication besides the recovery of penalty.

Organizing visit of skilled technician/ Engineer of OEM (which is Bluestar) for routine check of central AC Plant of capacity 2 x 48 TR located at command Hospital (WC) for the followings :- (i) Checking, Testing and providing consultancy and to prepare a report as per format decided by GE for necessary repair to be carried out and providing necessary testing report of each Central type AC plant unit. (ii) replacement of defective parts if required, by the skilled technician/ engineer of OEM. (iii) routine servicing of equipments to prevent brakdown of plant. The entire equipments will be serviced in presence of skilled technician.

Details of AC Plant of Capacity 2 X 48 TR are as under:- (i) Chiller 2 X 48 TR Make : Blue star - 02 Nos. (ii) Cooling tower twin fan motor 3 HP - 04 Set. (iii) Primary pump set 3 HP - 02 Nos (iv) Heater 3000 Watt -24 Nos.

(v) Condenser pipe line from 80 mm - 02 Set. (vi) Condenser pipe line from 7.8 mm - 02 Set (vii) Chilled water pipe line of various capacity from AC Plant to AHUs- 01 Set (viii) Control accessories such as temp gauge, pressure gauge, fire damper, electric actuator, 2-way motorized valves, butterfly valves, check valves strainer etc. installed in Central AC Plant as well in AHUs at different locations - 01 Job (ix) HVAC panel installed at Central AC Plant -02 Job.

(x) Ducting with diffusers/ Grills affixed with above mentioned AHUs. (xi) LDB panels installed at AHUs-01 Job. (xii) Control cables laid from Central AC Plant to AHUs room/ PUF panel room -01 Job. (xiii) Any other accessories associated with central AC plant at Command Hospital Chandimandir. (xiv) Air handling units complete including butterfly valves, balance valves, fire damper and other electrical accessories. -12 Nos

Note: (a) Necessary repairs and parts to be replaced will be paid separately under respective items here-in-after. (b) Contractor will arrange necessary stationary etc to the Engineer of OEM for the visit to be carried out as directed by engineer-in-charge.

(c) Minor spares such as nuts, bolts, washers, aluminum lugs, grease or any spare part required for satisfactory operation of AC plant other than mentioned in this CA here-in-after are deemed to be included in unit rate quoted by the contractor. Nothing extra shall be entertained on this account.

(e) If Contractor fails to repair/ replace any faulty items within 24 Hours after entry of fault in log sheet, a panel recovery of Rs. 1000/- per day after 24 hours shall be recovered from payment due to contractor without any formal communication besides the recovery of penalty.

Material and labour for descaling of condenser unit of 225 TR screw type water chiller plant including accessories like pipe line and condenser tubes by using wire brush and cleaning thoroughly by using cleaning prescribed chemical (as per IS) to make system serviceable as directed by Engr-In-Charge complete all as specified and as directed by Engineer-in-Charge.

Material and labour for repair of condenser unit of 225 TR screw type complete inclusive repair of condenser copper tube after testing including brass/ bronze metal dead plug in unserviceable condenser tube and descaling of water chiller plant including accessories like pipe line and condenser tubes by using wire brush and cleaning thoroughly by using cleaning prescribed chemical (as per IS) to make system serviceable complete all as specified and as directed by Engineer-in-Charge.

Material and labour for repair of Chiller unit of 225 TR screw type plant including removing all moisture/ water contents deposited inside the chiller complete and testing for entire satisfaction of Engineer-in-Charge.

Taking out carefully refrigerant compressor, screw type, compressor type 134-S-140-LZL of capacity 115 TR, 415 volts, 3 Phase, Max equal/ working pressure LP/HP 13/19 Bar, displacement 560 m3/h and pressure test LP/HP 14.5/21 bar installed on 225 TR screw type chiller plant after disconnecting all incoming and outgoing electric/ gas pipe and other connection for complete overhauling take out all bearings, gasket set, owing set, screw grinding, polishing etc. including re-assemble and install on same position and making all connection and connecting controlled PCBs/ Epron Card, Display card and other software programming & testing complete including nitrogen pressure and vacuum before and after opening the compressor unit for entire satisfaction of Engineer-in-Charge complete all as specified and directed.

Supply & fixing in replacement of following Items of 5 x 225 TR AC plant as per existing at site for smooth functioning of the AC plant and making the plant in running condition complete all as specified and as directed by Engineer-in-Charge. Make: Clivet or any other equivalent make compatible with existing make of AC plant as approved by the GE.

Expansion valve of 5 x 225 TR central AC plant complete including all connected material which is required for fixing (i.e. oxygen gas, nitrogen gas & welding brazing etc)

Expansion Valve sensor of 225 TR central AC plant

Expansion valve card of 5 x 225 TR central AC plant

Epron card of 5 x 225 TR central AC plant

Display card of 5 x 225 TR central AC plant

Transducer of 5 x 225 TR central AC plant

Coil of 225 TR central AC plant

sensor of 225 TR central AC plant

HRC Fuse of 225 TR central AC plant

Dry core filter suitable 225 TR chiller plant

compressor oil as per OEM Recommendation

Freon gas R-134A in chiller unit of 5 X 225 TR Central AC Plant

Heating strip element 3 KW for central AC plant, 5 x 225 TR capacity

Servicing of hot water blower 350 KW complete all as specified and directed. Note. Cost of checking of electric hot water generator, repair, replacement of connected parts and mechanic and labour expenditure shall deemed to be included in quoted rate.

Supply and fixing in replacement of Heating element made of seamless copper tube flanged resistance water immersion type 25 KW for hot water generator 350 KW Note. Cost of checking of electric hot water generator, repair, replacement of connected parts and mechanic and labour expenditure shall deemed to be included in quoted rate.

Supply & fixing in replacement of following Items of 2 x 48 TR AC plant as per existing at site for smooth functioning of the AC plant and making the plant in running condition complete all as specified and as directed by Engineer-in-Charge. Make: Bluestar or any other equivalent make compatible with existing make of AC plant as approved by the GE.

Supply and filling Refrigerant gas R-407C in chiller unit, 2 x 48 TR.

water sensor of central AC plant, 2 x 48 TR capacity

Discharge through valve of central AC plant, 2 x 48 TR capacity

PCB card for central AC plant, 2 x 48 TR capacity

Supply & fixing in replacement of globe valve/ Ball valve, brass, high pressure of size 20 mm bore, installed at 5x 225 AC Plant Cooling Tower complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of globe valve/ Ball valve, brass, high pressure of size 25 mm bore, installed at 5x 225 AC Plant Cooling Tower complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of globe valve/ Ball valve, brass, high pressure of size 40 mm bore, installed at 5x 225 AC Plant Cooling Tower complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of globe valve/ Ball valve, brass, high pressure of size 50 mm bore, installed at 5x 225 AC Plant Cooling Tower complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of 2-way motorized valves suitable for chilled water and hot water application complete with electrical/ electronic actuactor of size suitable for 50 mm dia pipe complete all as specified and as directed by Engineer-in-Charge. Make : Belimo/ Beacon Rotork/ Nibco or equivalent make as approved by the GE.

Supply & fixing in replacement of 2-way motorized valves suitable for chilled water and hot water application complete with electrical/ electronic actuactor of size suitable for 40 mm dia pipe complete all as specified and as directed by Engineer-in-Charge. Make : Belimo/ Beacon Rotork/ Nibco or equivalent make as approved by the GE.

Supply & fixing in replacement of float valve, brass, high pressure with polythene float and fly nut complete, screwed for iron pipe or brass ferrule of size 20 mm bore, installed at 5 x 225 AC Plant Cooling Tower complete all as specified and as directed.

Supply and fixing GI pipe, medium grade, of 20 mm bore, with all fittings installed at 5x 225 central AC Plant Cooling Tower complete inclusive taking out old unserviceable pipe complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of Butterfly valves PN 1.6, flanged type, heavy duty of size 250 mm bore, installed at Central AC plant of capacity 5 x 225 TR Capacity including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of Butterfly valves PN 1.6, flanged type, heavy duty of size 200 mm bore, installed at Central AC plant of capacity 5 x 225 TR Capacity including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of Butterfly valves PN 1.6, flanged type, heavy duty of size 150 mm bore, installed at Central AC plant of capacity 5 x 225 TR Capacity including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of Butterfly valves, PN 1.6, flanged type, heavy duty of size 100 mm bore installed for AHU including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of Butterfly valves, PN 1.6, flanged type, heavy duty, of size 80 mm bore in AHU pipe line including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and as directed by Engineer-in-Charge.

Supply & fixing in replacement of Butterfly valves, PN 1.6, flanged type, heavy duty, of size 65 mm bore in AHU pipe line including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and as directed by Engineer-in-Charge.

Taking down defective/ burnt condenser pump motor of capacity 40 HP, transporting the same to local workshop after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and gauge of copper winding wire, refixing the same in original positioning and testing the pump set to the entire satisfaction of Engr-in-Charge.

Taking down defective/ burnt condenser pump motor of capacity 20 HP, transporting the same to local workshop after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and gauge of copper winding wire, refixing the same in original positioning and testing the pump set to the entire satisfaction of Engr-in-Charge.

Taking down defective/ burnt Primary chilled water pump motor of capacity 10 HP, transporting the same to local workshop after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and gauge of copper winding wire, re-fixing the same in original positioning and testing the pump set to the entire satisfaction of Engr-in-Charge.

Supply and fixing of variable frequency drive (VFD), 3 phase, 415 volts, 5 to 7.5 HP Motor of AHU and connecting all incoming and outgoing electric connections including taking out old unserviceable VFD complete all as specified and as directed by Engineer-in-charge. Make: Danfoss or any other equivalent make as approved by GE.

Supply and fixing of variable frequency drive (VFD), 3 phase, 415 volts, suitable for 20 HP secondary pumps of 5 x 225 TR capacity Central type AC plant, 3 Phase Motor from the secondary pump and connecting all incoming and outgoing electric connection including taking out old unserviceable VFD complete all as specified and as directed by Engineer-in-charge. Make: Danfoss or any other equivalent make as approved by GE.

Supply and fixing in replacement 3 pole (Three pole + 1NO) power contractor, MNX- 32 Amps, 415 volts in main panel of 5 x 225 TR Central type AC Plant complete inclusive all incoming and outgoing electric connection complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement 3 pole power contractor, MO 25 Amps, 415 volts, 1NO+1NC in main panel of 5 x 225 TR Central type AC Plant complete inclusive all incoming and outgoing electric connection complete all as specified and as directed by Engineer-in-Charge.

Servicing cum repair of GRUNDFOS Digital Control Panel suitable for 4 x variable frequency drive (VFD) complete inclusive re-set of controlled relay, overload relay, digital display unit, repair of controlled card etc and testing for entire satisfaction of Engr-in-Charge complete all as specified and directed.

Supply & fixing in replacement air diffusers fabricated out of Powder coated extruded aluminium material, square shape, anti smudge ring & aluminium volume control dampers complete all as specified and as directed by Engineer-in-Charge.

M&L for two coats of synthetic enamel paint of cooling tower, cooling tower connecting pipes, all motors and compressor units including refregerent pipe, chiller unit of central AC plant 5 x 225 TR including preparation of old painted surfaces after removing insulation material and reinsulation after painting complete complete all as specified and directed. Note : Colour of paint is as per existing on site or as approved by the GE.

M&L for two coats of synthetic enamel paint on cooling tower, cooling tower connecting pipes, all motors and compressor units including refregerent pipe, chiller unit of central AC plant 2 x 48 TR including preparation of old painted surfaces after removing insulation material and reinsulation after painting complete all as specified and as directed by Engineer-in-Charge. Note : Colour of paint is as per existing on site or as approved by the GE.

Supply and fixing PVC fins (film type) from the cooling tower of 5 x 225 central type AC plant as per existing thickness, size and pattern including taking out old unserviceable PVC fins complete all as specified and as directed by Engineer-in-Charge.

Material and labour for testing of water leakage in drain out tray of size 1400 X 1400 mm and depth 450 mm of cooling tower made out of fiber body including repairing of any type of leakage with heavy duty adhesive and fiber sheet including cleaning all settled scale in tray including supply and fixing new Stainless steel strainer, 2 mm thick of suitable size and shape on delivery pipe of 150 mm dia complete all as specified and directed by Engineer-in-Charge.

Supply & fixing of cooling tower fan blade with coupling of aluminium as per existing capactiy and size complete all as specified and directed by Engineer-in-Charge.

Supply and fixing of water head (06 Nos) of PVC of dia 75 mm including all joints, nozel and all connected acessories for cooling tower complete all as specified and directed by Engineer-in-Charge.

Supply & fixing in replacement of Nozzle with butterfly 40 mm bore, installed at 5 x 225 AC Plant Cooling Tower complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement of MCCB, 3 pole, 415 volts, Ics=100%Icu, 50 KA of capacity 800 Amp with adjustable thermal and fixed magnetic setting complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement of MCCB, 4 pole, 415 volts, Ics=100%Icu, 36 KA of capacity 400 Amps with adjustable thermal and fixed magnetic setting complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement of MCCB, 4 pole, 415 volts, Ics=100%Icu, 36 KA of capacity 200 Amps with adjustable thermal and fixed magnetic setting complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement of MCCB, 4 pole, 415 volts, Ics=100%Icu, 36 KA of capacity 160 Amps with adjustable thermal and fixed magnetic setting complete all as specified and directed by Engineer-in-Charge.

Supply & fixing in replacement of MCB SP 6-32 Amps, 10 KA, 'C' series complete all as specified and directed by Engineer-in-Charge.

Supply & fixing in replacement of wire/ cable connector strip for connecting of various electronic parts of Electric panel board of Condenser motor, primary motor and cooling tower motor complete all as specified and directed by Engineer-in-Charge.

Repair and servicing of AHU including welding, jointing, greasing of bearing, pulley, fan belts, foundation and all type of fabrication work in AHU, alignment of motor and blower unit blower fan repair and AHU repair complete all as specified and directed by Engineer-in-Charge. Note : All defective parts will be measured and paid separately.

Supply and fixing Fan pulley belt of follwing type/ size, ISI marked, complete all as specified and as directed by Engineer-in-Charge.

Fan pulley belt B-39

Fan pulley belt B-31

Fan pulley belt B-60

Fan pulley belt B-50

Fan pulley belt B-44

Fan pulley belt B-54

Supply and fixing fan and motor pulley as per existing at site of following sizes complete all as specified and as directed by Engineer-in-Charge.

fan and motor pulley 100 mm dia

fan and motor pulley 150 mm dia

fan and motor pulley 200 mm dia

fan and motor pulley 300 mm dia

Supply and fixing in replacement of bearing of following type/ sizes for motor/ pump of following capacities and making motor/ pump in running condition complete all as specified and directed. Make : NBC, SKF or equivalent make as approved by GE.

Bearing (206/207) for motor/pump of capacity upto 5 HP

Bearing (6223) for motor/pump of capacity 40 HP

Bearing (6312) of motor/pump of capacity 20 HP

Bearing (6308) of motor/pump of capacity 7.5 HP

Bearing (6306) of motor/pump of capacity 5 HP

Supply and fixing of MS channel of size and type as decided by GE (as per sample) complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing MS Sheet of thickness as directed by Engineer-in-charge complete all as specified and directed.

Supply and fixing vibration pad, ISI marked, complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing of condensate water drain pipe of AHUs, PVC, of size 32 mm dia including providing all connected fittings like anchor fasteners, couplings, bends, elbows, tees, thrust, blocks, wooden blocks, flanges, welding as required including insulation complete including taking down old unserviceable central AC condensate water drain pipe including all fittings of AHU complete all as specified and directed.

Disconnecting all incoming electric connections of fan coil unit (FCU) and remove all pre and fine filter from the FCU and keep in safe custody for re-fix after cleaning with chemical mixed pressure water and clean complete FCU Chamber, complete all as specified and directed by the Engr-in-Charge.

Disconnecting all incoming electric connection of Air Handling Unit (AHU) and remove all pre and fine filter from the AHU and keep in safe custody for re-fix after cleaning with chemical mixed pressure water and clean complete AHU Chamber and room complete all as specified and directed by the Engr-in-Charge.

Taking down defective/ burnt out blower motor of capacity 7.5 HP from the Air Handling Unit (AHU) & transporting the same to local work shop after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire & rewinding the motor with same size and gauge of copper winding wire complete including replacement of all bearing/ bush & re-fixing on the same position and testing to the entire satisfaction of Engr-in-Charge.

Taking down defective/ burnt out blower motor of capacity 5.5 HP from the Air Handling Unit (AHU) & transporting the same to local work shop after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire & rewinding the motor with same size and gauge of copper winding wire complete including replacement of all bearing/ bush & re-fixing on the same position and testing to the entire satisfaction of Engr-in-Charge.

Supply and fixing of blower unit of capacity up to 7000 CFM complete as per existing make, size and capacity including testing in all respect for entire satisfaction of Engr-in-Charge including taking down of old unsv blower complete all as specified and directed.

Dismantling of foundation of Pump installed at 5 x 225 central AC plant of overall size 2m x 3m x 0.3 m including unscrewing nuts & bolts after taking out existing Motor and re-construction of foundation with same size with PCC 1:2:4, B-1 (using 20 mm graded stone aggregates) including reinstalling pump and motor with new nuts and bolts complete on same position and connecting all incoming and outgoing water & electric connection and testing complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement of Gun metal impeller of capacity 20 to 40 HP motor complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Rotor of capacity 5/ 7.5 HP complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Starter of capacity 5 to 7.5 HP with accessories complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Gun metal gland bush of capacity 5 to 7.5 HP and making motor in runnig condition complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Gun metal gland bush of capacity 20 to 40 HP and making motor in runnig condition complete all as specified and as directed by Engineer-in-charge.

Complete servicing of existing blower motor including checking the functioning of bearing, motor pully, V belts and blower flywheel and maintain the positive pressure inside the blower motor complete all as specified and directed.

Supply fixing in replacement of blower shaft of capacity 5/ 7.5 HP for smooth functioning of blower complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Pump carbon seal as per existing capacity (5 to 7.5 HP) in site and change it immediately and making motor in running condition complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Pump carbon seal as per existing capacity (10 HP) in site and making motor in running condition complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Pump carbon seal as per existing capacity (20 HP) in site and making motor in running condition complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Pump carbon seal as per existing capacity (40 HP) in site and making motor in running condition complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of Indicator lamps LED type for Red, Yellow and Blue colour for AHU panel board as per existing capacity complete all as specified and as directed by Engineer-in-charge.

Supply & fixing in replacement of Pressure guage 0-10 Kg/cm2, round dial type including brass nipple, test cock, connecting pipe and other minor accessories to fix the same in AC plant/AHUs complete all as specified and as directed by Engineer-in-charge.

Supply & fixing in replacement of connecting pipe of Pressure guage 0-10 Kg/cm2, for AC plant/AHUs complete all as specified and as directed by Engineer-in-charge.

Supply & fixing in replacement of Temperature guage 0-50ºC, rectangular type with transparent glass to see the reading including brass nipple and other minor accessories to fix the same in AC plant/ AHUs complete all as specified and as directed by Engineer-in-charge. Make : Taylor/ H. Guru/ DS Engg or equivalent make as approved by the GE.

Taking down existing defective HEPA filters from OT complex of size 900 x 600 mm after taking down outer covers, removing nut, bolts and washers from plenum including cleaning the plenum internally thoroughly and fix new HEPA filter complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/ Global or equivalent make as approved by the GE.

Supply & fixing in replacement of Pre filter flange/ box type as required at site of size 610 x 610 x 50 mm having efficiency 90% and filtered up to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/ Global or equivalent make as approved by the GE.

Supply & fixing in replacement of Pre filter flange/ box type as required at site of size 610 x 305 x 50mm having efficiency 90% and filtered up to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/Global or equivalent make as approved by the GE.

Supply & fixing in replacement of Pre filter flange/ box type as required at site of size 305 x 305 x 50mm having efficiency 90% and filtered up to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/ Global or equivalent make as approved by the GE.

Supply & fixing in replacement of Pre filter flange/ box type as required at site of size 610 x 610 x 150 mm having efficiency 90% and filtered up to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/ Global or equivalent make as approved by the GE.

Supply & fixing in replacement of Pre filter flange/ box type as required at site of size 610 x 305 x 150 mm having efficiency 90% and filtered up to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/ Global or equivalent make as approved by the GE.

Supply & fixing in replacement of Pre filter flange/ box type as required at site of size 305 x 305 x 150 mm having efficiency 90% and filtered up to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site complete all as specified and as directed by Engineer-in-charge. Make : AAF/ Purolator/ Thermadyne/ Global or equivalent make as approved by the GE.

Opening of AHU coil, supply duct & return duct, diffusers, grills, damper and any other installed component & duct of connected Area of AC Plant installed at Command Hospital (WC) Chm. All above part should be cleaned with following procedures and equipment :- (a) Vaccum collection : ensure there is no cross contamination in ducts of plant premises. (b) To clean the duct of ac plant with machine operated rotary brushes system self-propelled type with different types of brushes and with wipers.

(c) agitation and vacuum collection with Contact vacuuming method of HVAC system. (d) Compressed air washing mechanical means to agitate and dislodge particulate from the interior surfaces of HVAC system. (e) Inspection with Robotic camera before, during and after the cleaning process. (f) All of the grill and differs are removed and cleaned. (g) placing Foam core boards up to supply vent openings to increases the air movement in the duct and for allowing the air to safely flow backward through the air duct system without creating adverse negative pressure.

(k) After the dust and debris is removed from the system, an light fogged through the air duct system, to immediately kills fungus and bacteria that may be lefts in the system. (l) Finally, through video camera, re-inspect the air duct system in order to verify its cleanliness. (m) clean the insulation in the air handler unit manually then treat with fogger machine to kill any residual mold, fungus, or bacteria. (n) Coil cleaning with the Coil Cleaner. (o) Testing the duct after cleaning all part of the system of air ducts.

Note :- 1. The contractor have to submit the AC duct cleaning report and complete videography in soft copy to GE showing photo graphs before cleaning & after cleaning of duct while claiming the payment. 2. Cooling area will be considered for the purpose of payment.

Taking down carefully defective insulation over duct, preparing smooth surface for applying adhesive and insulating the duct with external thermal insulation 13mm thick nitrile rubber open cell acoustic foam including insulating the joint with aluminium tape complete all as specified and as directed by Engineer-in-charge.

Supply and fix in replacement of 6 mm thick nitrile rubber insulation on condensate drain pipe of size 50/ 40mm dia and fittings like valves, flanges and union etc complete all as specified and as directed by Engineer-in-charge.

Refixing of aluminum fibre door of AHUs by replacing of hinges, nut & bolts including provison of locking arrangement complete all as specified and as directed by Engineer-in-charge.

PARTAP ENGINEERING WORKS (BID ID -3170294)

SHRI BALA JI CONSTRUCTION COMPANY (BID ID -3172026)