Repair / Maintenance of Package / Central AC Plants with other connected works at AF Stn Nal under GE (AF) Nal

Amount

Comprehensive and Preventive maintenance, Testing & calibration of Centralized AC plant and its equipments installed at various locations for a period of 11 months including all minor spares upto the cost of Rs 500/- per job, materials, tools & labour etc Inspecting the AC plant/system consisting of Complete Chiller system including and cayy out , details as under :- (i) Open fan section covers AHU, Check belts, bearings and alignment of belt drive refit the fan section.compressor, various in various locations & capacity as under refit the fan section. (ii) Inspect contacts for chatter marks and clean. (iii) Check if there is a rust spots op sheet panels and intermediate drain tray, ambry such spot and patch up with red oxide and paint. (iv) Inspect cables for loose/loaded terminals, rectify if necessary. (v) Checking the system for leaks and then rectifying leaks, if any. (vi) Taking a set of readings and then evaluating them to ensure satifactory performance of the plant, if required then calibrate and adjusting the setting of the system. (vii) Checking the control and set points for operation and adjusting the setting if necessary. (viii) Check flow switch operation for proper operation. (ix) Checking the electrical control and set points for operation and adjusting the setting if necessary. (x) Checking the condition and setting of panel controls, operating controls and safety controls to optimum performance, reliability and replacement of the same, if found necessary.contd.... (xi) Check AHU motor mounts for undue vibrations replace mounts if necessary.

Item 1.00 contd... (xii) The contractor shall detail techinician to attend breakdown of any type with in the period of contract. i.e 334 days inclusive of all sundays & holidays. (xiii) Preventive maintenance as per schedule be carried out. However, if any other activity is required to be additionally done for proper maintenance of the system as per the OEM recommendation, carry out the same with prior approval of the accepting officer. The Preventive maintenence shall be carryout for complete HVAC system & its associated accessories installed at various locations. The preventive maintenance shall be carried out in such a manner that overall functioning of the system & functional equipment is barely affected. Notes : (a) All other items required to replace will be measured and paid seperately under relevant item of schedule. (b) In case, the contractor wants to get the payment against this item during currency of contract, payment shall be released only on completion of each calendar quarter on proportional basis. (c) If contractor to fails to execute any of the works as mentioned above , no payment against the item shall be allowed. (d) All other items costing more than Rs 500/- per job required to replace shall be measured and paid seperately under relevant item of schedule. (e) Payment shall be made on the proportion basis quoted for one job for eleven month, incase any particular month/period, no maintenance will be carried out, recovery on proportional basis shall be deducted from the contractor's payment.

(a) SEW NO. 2 BLDG (i) 2 x 8.5 = 17 TR capacity (in operation) (ii) 1 x 8.5 = 8.5 TR capacity (as stand by)

(b) BASE OPS (i) 2 x 36 = 72 TR capacity (in operation) (ii) 1 x 36 = 36 TR capacity (as stand by)

(c) WWR (i) 2x24= 48 TR Capacity (on operation) (ii) 1x24= 24 TR Capacity (as stand by)

(d) OLD SRE BLDG (i) 2 x 7.5 TR = 15 TR capacity (in operation). (ii) 1 x 7.5 TR = 7.5 TR capacity (as stand by).

(j) AUDITORIUM (i) 2 X 37.5 = 75 TR capacity (in operation) (ii) 1 x 37.5 = 37.5 TR capacity (as stand by )

(k) BOMB DUMP (i) 2x37.5= 150 TR Capacity (on operation) (ii) 1x37.5= 37.5 TR Capacity (as stand by)

(l) NEW TECH FLT HANGER (i) 2x75= 150 TR Capacity (on operation) (ii) 1x75= 75 TR Capacity (as stand by)

Supply, commissioning as in repairs scroll sealed compressor of 12.5 TR capacity including valve and other fittings and testing for leakage and rectification by welding / brazing including and charging of refrigerant upto the required capacity complete all as specified. Note : (a) Refrigerant gas shall be measured and paid separately as Supply only under respective item of this Schedule. (b) Contractor shall produce original purchase voucher along with test certificate from manufacturer / autorized dealer of Compressor manufacturer as applicable. (c) Contractor shall provide the testing facility as the testing of compressor/ installation shall be carried out in accordance to the laid down procedure. Unit rate of this item includes the said element. (d) Old compressor shall be deposited to AGE E/M Yard of AF Stn Nal and cost of transportation shall be arranged by the contractor at his own.

Supply & Fixing as in repairs pilot solenoid valve 3 way of brass metal for compressor complete all as specified and as directed.

Supply only Refrigerant Gas R-22 of compressor all as specified and directed. Note : (a) Contractor shall produce the original purchase vouchers along with test certificates of entire quantity. (b) Cylinder shall be arranged by the contractor at his own. However, after charging of gas, emptied gas cylinder shall be returned to the contractor. (c) Gas shall be arranged by the contractor as per the requirement given by the Engineer-in-Charge. (d) During transportation if any leakage is found, contractor shall be held responsible for any lapses. However, net measured quantity shall be taken into account for payment purpose. (e) Before top up the gas in the cyliner, it shall be ensured by the contractor that cylinder is in order for filling the gas, necessary calibration shall be carried out by the contractor at his own and unit rates of this item includes this element. While quoting the rates, this aspect shall be taken into account and nothing extra shall be adissible on account of any misunderstanding.

Supply only Refrigerant Gas R-407c of compressor complete all as specified and directed . Note : (a) Contractor shall produce the original purchase vouchers along with test certificates of entire quantity. (b) Cylinder shall be arranged by the contractor at his own. However, after charging of gas, emptied gas cylinder shall be returned to the contractor. (c) Gas shall be arranged by the contractor as per the requirement given by the Engineer-in-Charge. (d) During transportation if any leakage is found, contractor shall be held responsible for any lapses. However, net measured quantity shall be taken into account for payment purpose. (e) Before top up the gas in the cyliner, it shall be ensured by the contractor that cylinder is in order for filling the gas, necessary calibration shall be carried out by the contractor at hi own and unit rates of this item includes this element. While quoting the rates, this aspect shall be taken into account and nothing extra shall be adissible on account any misunderstanding.

M&L disconecting of monoblock pump set and motor of capacity 5HP of any make, strip opening and taking out gland packing, bearing carefully and servicing the impeller and motor complete and re-winding with appropriate size of super enamelled winding wire incl replacement of worn out ball bearing, gland pack, rubber gasket, capacitor, nut, bolts and washer greasing complete and refixing on same place and connecting to MS pipe and testing complete all as specified and directed. NOTE : Unit rates of this item includes the cost of services and including replacement of ball bearing, gland packing, rubber gasket, capacitor, nut bolts, washer of required size and greasing etc.

All as per description of serial item No. 6.00 here in before but of capacity 7.5 HP.

Supply & fixing in repair condensor safety valve of brass 350 PSI to 550 PSI complete all as specified and as directed.

S & F in repair cooling tower fan blade assembly complete all as specified and as directed of the following capacities. Note : Number of blades shall be provided in accordance to existing number however before quoting the unit rate of this item, tenderer are hereby advised to visit the site.

50 TR capacity

100 TR capapcity

Supply & fix as in repairs flanged mounted electric motor confirming to IS:2223 for cooling tower complete all as specified and as directed of the following capacities. NOTE : (a)Contractor shall provide the original purchase vouchers and test certificates of motor. (b) Electric motor shall be fixed its in its new position and unit rate of this item includes disconnecting the fittings and fixing the same with new motor, However unit rate of these item includes the cost of nuts / bolts / framing etc and making the electric connection to the satisfaction of Engineer-in-charge. (c) Old electric motor shall be deposited by the contractor in the AGE E/M store yard.

1.5 HP capacity

2 HP capacity

3 HP capacity

Supply and fixing of Pressure 4" Dia Gauges 0 to 14 Kgs of Burden Type, stainless steel or CP brass stem complete with Globe valves confirming to IS - 3624 complete all as specified and directed.

S&F in repair the Cast iron butterfly valve of following capacity.

100 mm dia

80 mm dia

65 mm dia

50 mm dia

Supply, installation, testing and commissioning as in repairs 25 mm dia Ball valves of stainless steel for drain with fittings etc complete all as specified and directed.

Supply & Fix as in repairs MCCB, TP, of capacity 200 Amp and 36 KA, 415 volts, 50 Hz complete all as specified and directed.

All as per description of serial item No. 14.00 here in before but 125 Amp and 16 KA.

All as per description of serial item No. 14.00 here in before but 100 Amp and 16 KA.

S&F as in repairs PVC nozzle for cooling tower of capacity 50 TR to 100 TR complete all as specified and directed. Note : Number of nozzle and size shall be provided as per existing number, therefore tenderer are here by advise to visit the site before quoting their rates.

S&F as in repairs thermostate expansion valve of copper metal suitable for capacity 37.50TR to 75TR AC plant following capacity of Plants complete all as specified and directed.

Repairing of existing starter / panel by disconnecting existing burn out cable/ wiring complete and replaced with 1.5 Sqmm single core copper conductor cable include replacement of Digital Volt meter, Digital Amp Meter alongwith CTs, relays, making connection, replacement of cable lugs of suitable size, repair/replacement of locking arrangement include painting with two coat of synthetic enamel paint complete all as specified and directed. Note : Repalcement of contractor, relay, MCCBs, single phase preventer shall be measured & paid seperately as 'Supply only'.

Supply only delay timer relay suitable for starter up to 50HP Complete all as specified and directed.

Supply only single phase preventer to protect motor for phase failure complete all as specified and directed.

Supply only Indicator lamp LED type of RYB colour , 230 Volts fixed on existing panel board complete all as specified and directed.

Supply only Round Push button switch for starter , 230 V fixed on existing panel board complete all as specified and directed.

S&F as in repairs Power contactor TP 415 volt, 25 Amp, complete all as specified and directed

S&F as in repairs Power contactor TP 415 volt, 12 to16 Amp, complete all as specified and directed.

S&F as in repairs Bimetallic over load relay 17 to 25 Amps, 3 phase. complete all as specified and directed.

S&F as in repairs Bimetallic overload relay 12 to 16 Amps, 3 phase complete all as specified and directed.

S & F in repair fan belt of suitable size for compressor drive of various capacities (as per sample) complete all as specified and directed

Taking out the mud/silt deposited in the all kinds of cooling tower, with the help of nylon / wire brush including Providing fresh strip / M seal etc to prevent leakage of water from the base pipe and painting of all the connected accessories with black paint complete all as specified for the following capacity of AC plants complete all as specified and directed.

30 TR capacity

50 TR capacity

100 TR capacity

De-scaling of condenser with the help of De-scaling chemicals and nylon brush and cleaning of AHU filters , blowers etc. complete all as specified and directed for the following capacity AC Plants of any make.

3x7.5 TR capacity

3x8.5 TR capacity

3x24 TR capacity

3x36 TR capacity

3x37.5TR capacity

3x75 capacity

Servicing and cleaning of AHUs cooling coil and pan, Washing filter with the help of pressure jet and cleaning with de scaling chemicals, cleaning PAN humidifier and dehumidifier, cleaning HOt water generator and brazing, if required. incl testing complete all as specified and directed for the suitable capacity following AC Plants.

8500 CFM capacity

9000 CFM capacity

19000 CFM capacity

24000 CFM capacity

28000 CFM capacity

Supply and fixing as in repairs of 2000 Ltr PVC Make Up tank three layer, white, including overflow Valve, float Valve and connection to cooling tower with 32mm dia GI medium grade pipe of required length complete all as specified and directed Note: Quoted unit rate shall be included cost of make up tank, over flow valve, float valve and GI pipe complete.

Supply and laying of condensate drain water piping with MS pipes 40mm bore and necessary fittings like elbows, tees, reducers etc complete all as specified and directed.

M&L for duct insulation with 13 mm thick nitrile faom sheet insulation having density 50 kg/cum, complete all as specified and including the following:- (i) M&L for cleaning the duct surface (to be insulated ) by scrapping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (ii) M&L for applying rubber based adhesive CPRX compound. (iii) M&L for sealing of all longitudinal joints and circular overlaps with and including Nitrile foam tape /Aluminium foil tape 50 mm wide, to make the insulation leakproof. (iv) M & L for securing the insulation with and including mechanically fastened nylon/steel straps of size 12 mm/50 mm at maximum intervals of 1.2 mtr.

Taking down existing burnt backalite connector from panel baord, replacement of 63 Amps Bacakalite cable connector after replacement of burnout existing copper lugs complete all as specified and directed.

Taking down existing burnt backalite connector from panel baord, replacement of 100 Amps Bacakalite cable connector after replacement of burnout existing copper lugs complete all as specified and directed.

Taking down defective micro processor controller make Softhard, phase controller and connective items from panel board of Water cooled chiller unit of capacity 37.5 TR make Voltas Model No WCDSO37DPMN3X1 refixing the same after necessary repair/ replacement of parts defective PCB, relays, micro processer based controller as required including testing and commissioning of chiller unit of the satisfication of Engr-in-Charge. Note : Contractor also submitt the test sheet of relay functioning of chiller unit after completion of job.

Taking down defective micro processor control panel make Softhard, phase controller and connected items from panel board of Water cooled chiller unit of capacity 37.5 TR or equivalent upto 75 TR cap make Voltas Model as existing refixing the same after necessary repair of microprocessor based PCB, phase controller, by replacement of parts as required including testing and commissioning of chiller unit of the satisfication of Engr-in-Charge. Note : Contractor also submitt the test sheet of relay functioning of chiller unit after completion of jopb.

Taking down old UNSV sensor from chiller/ condensor unit and replacment of thermoelectrical sensor with new one of existing model , include testing and comissioning complete all as specified and directed.

S&F as in repairs PVC fills for FRP cooling tower of size 150x300x 600mm. complete all as specified and directed

Taking out Centrifugal electric motor 10 HP capacity, 3 phase, 440 Volt of any make and model, from the exisitng foundation, transporting to workshop, rewinding with super enamelled copper winding wire of existing wire gauge including other allied items such as varnish tape, sleeve, greasing, bearing, bushes etc of suitable size for following capacity of motor including necessary repairing of rotor shafts if required and refixing after testing and commissioning complete all as specified and directed. Note- All T&P required for repair shall be included in the unit quoted rate of this item and nothing extra shall not be paid on this account.

M&L disconecting of monoblock pump set and motor of capacity 5HP of any make, strip opening and taking out gland packing, bearing carefully and servicing the impeller and motor complete and re-winding with appropriate size of super enamelled winding wire incl replacement of worn out ball bearing, gland pack, rubber gasket, capacitor, nut, bolts and washer greasing complete and refixing on same place and connecting to MS pipe and testing complete all as specified and directed. Note : Unit quoted rates of this item includes the cost of services and including replacement of ball bearing, gland packing, rubber gasket, capacitor, nut bolts, washer of required size and greasing etc. nothing extra shall not be paid on this account.

All as per description of serial item No. 56.00 here in before but of capacity 1 HP

All as per description of serial item No. 56.00 here in before but of capacity 3 HP

Taking down old XLPE Aluminium cable and Supply and fixing of PVC sheathed armoured copper cable of size 10 Sqmm 4 core, superior quality, laying over GI slotted cable tray including necessary supports and frame work or laying in existing trenches or floor complete all as specified and directed.

Taking down old UNSV GI ducting and replacment of GI duct of size 22 gauge as existing shape and size in same location as directed, including necessary arrangements of suitable thickness including necessary supports, hangers, fasteners, nuts-bolts, gaskets, splitter, vanes etc and making good the disturbed surface with finished to match with the existing surfaces, complete all as specified and directed. Note: (i) Overlapping / moulded portion of ducting shall not be consider for payment purpose the length and width of the ducting shall be measured from the outer dimension of the finish duct. (ii) Riviting,bolting,welding and clamps etc. required for making the safe of duct/fixing/installation of duct is included in the unit quoted rate of duct nothing extra shall not paid on this account.

Supply and filling compressor oil in compressor including testing and commisioning complete all as specified and directed.

BIDAWAT ENTERPRISES