GE I R AND D/CHD-99/2022-23 REPAIR AND MAINTENANCE OF CENTRAL/VRV VRF AC PLANT, CONTROL PANELS AND OTHER CONNECTED WORKS AT TBRL RANGE RAMGARH

Amount

Material and labour for charging of refrigerant gas R-410A/R-134A in AC plant complete all as specified and directed.

Material and labour for dismantling unserviceable electric motor AC 3 Phase of capacity 2/3/5/7.5/10 HP and rewinding with super enamelled copper winding wire of existing size and replacing other burnt items including installing and testing complete all as specified and directed. Note:- Copper Winding wire shall be measured and paid separately under respective Item.

Supply and fixing in replacement super enamelled copper winding wire

Supply and fixing in replacement ball bearing No 6206/6208/6306/6307 complete all as spcified and directed.

Supply and fixing in replacement ball bearing No 6308/6309/6310 complete all as spcified and directed.

Repair and overhauling to air handling unit of Central AC Plants, dismentling of Air filters and cleaning the cooling coil with chemical and refixing the air filtrer after cleaning and testing and greasing the bearing of blower shaft etc complete all as specified and directed by Engr-in-charge for the following AC Plant AHUs :- Air handling unit no.1 of 3x12.9 KW and 1x15.3KW VRV VRF type Central AC plant at EMI building ETF

All as per serial item no 6.00 above but Air handling unit no.2 of 3x12.9 KW and 1x15.3KW VRV VRF type Central AC plant at EMI building ETF

All as per serial item no 6.00 above but Air handling unit of 2x85 Ton Central AC plant at EMC Bldg, ETF

Supply and fixing in replacement of suction/discharge oil pressure gauge / water pressure gauge of size 100 mm dia with pressure range 0-150 PSI/ 0-300 PSI complete all as specified and directed.

Cleaning of cooling coil of VRV/VRF unit of AC Plant with caustic soda , after that flushing /cleaning the condeser coil and fins with water by using nylon brush to remove the dirt and scale complete all as specified and directed for the AC plants 6x12.9 KW VRV/VRF unit at EMI building ETF

All as per serial item no 8.00 above but 2x15.3 KW VRV/VRF unit at EMI building ETF

Material and labour for preperation of old painted surfaces of MS / GI pipe line of condenser and chilled water and applying two coats of synthetic enamel paint on steel/iron surfaces complete all as specified and directed.

Material and labour for preperation of old painted surfaces of condenser water/chilled water monoblock pumpsets of capacity upto 10 HP and applying two coats of synthetic enamel paint on steel/iron surfaces complete all as specified and directed.

Supply and fixing in replacement Industrial type thermometer complete all as specified and directed.

Supply, replacing, commissioning and testing of mono block water pump set electric driven 415 volt Cap 10 HP suitable for existing suction/discharge of condensor/chilled water as per site requirement complete all as specified and directed.

Material and labour for Insulation of M S Pipe with PUF slab 30 mm thick with and including applying bituminuous compound and Aluminium cladding with 26 gauge Aluminium sheet for MS pipes of following dia complete all as specified and directed 50 mm dia

Supply and fixing for Display Board for electric shock treatment chart/ Maintenance Chart/ Description Chart of size 850x600 mm made out of CRCA sheet 2 mm thick with square pipe 35 mmx35 mm fixed around sheet by welding and making hanging arrangements on top of the board. Board shall be painted with two coats of stove enamelled paint (navy Blue) over a coat of red oxide primer and writing the detail with fluoroscent reflective tape (as per sample) by digital computerized printing style complete all as specified and directed.

Supply and fixing for synthetic insulating rubber mat of size 2 metre x 1 metre x 19 mm (ISI Marked) suitable for control panels of AC Plants complete all as specified and directed.

Taking down old unserviceable MCB/ MCCB from LT Panel and supply and fix new MCB/ MCCB of size and capacity MCCB rating 100 Amps, 4 pole, 415 volts breaking capacity 16 KA complete all as specified and directed.

All as per serial item no 16.00 above but size of MCCB rating 125 Amps, 4 pole, 415 volts breaking capacity 16 KA complete all as specified and directed.

All as per serial item no 16.00 above but size of MCCB rating 200 Amps, 3 pole, 415 volts breaking capacity 36 KA complete all as specified and directed.

All as per serial item no 16.00 above but size of MCB TPN rating 40 Amps, 4 pole, C-type, 415 volts breaking capacity 9 KA complete all as specified and directed.

All as per serial item no 16.00 above but size of MCB TPN rating 63 Amps, 4 pole, C-type, 415 volts breaking capacity 9 KA complete all as specified and directed.

All as per serial item no 16.00 above but size of MCB TP rating 40 Amps, 3 pole, C-type, 415 volts breaking capacity 10 KA complete all as specified and directed.

All as per serial item no 16.00 above but size of MCB SP rating 6-32 Amps, single pole, 240 volts complete all as specified and directed.

All as per serial item no 16.00 above but size of MCB SPN rating 40 Amps, single pole neutral, 240 volts complete all as specified and directed.

Taking out old unserviceable power/auxiliary contactor from control panel / starter and supply and fix new power contactor of following size and capacity complete all as specified and directed:- Power contactors of AC3 rating 9-25 Amps MNX type

Taking out old unserviceable Timer Switches from LT panel / starter and supply and fix new Timer Switches timer switch range 0 to 60 second complete all as specified and directed.

Supply and fixing in replacement Digital Volt Meter, complete all as specified and directed.

Supply and fixing in replacement Digital Ampere Meter, complete all as specified and directed.

Material and Labour for Earthing complete with galvanised steel earth plate electrode 60cm X 60cm X 6.0mm thick, buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of the plate not less than 1.5mtr below normal ground level connected to GI earth strip of size 32x6 mm by means of bolts, nuts, check nuts and washers of galvanised iron complete earth pit of PCC M-10(Nominal mix) using 20mm graded stone aggregate, 50mm thick earth pit cover of RCC M-15 (Nominal mix) using 20mm graded stone aggregate with MS TMT reinforcement bar of 8mm dia @ 150mm centre to centre both ways, MS handle 10mm dia made to shape, PGI funnel, wire mesh and 20mm bore GI water pipe medium grade and 40mm bore light grade GI pipe for protection of earth strip from plate to main switch board, common salt, charcoal dust including testing on completion complete all as specified and as directed all as shown in electrical plate No. 5 including testing on completion and making good the disturbed surfaces of wall floors etc without claiming extra cost all as directed by Engr-in-Charge. (Note: GI strip & GI pipe beyond 7.5Mtr length from earth electrode shall be measured and paid separately).

Material and Labour for earth continuity conductor size 32x6 mm galvanized iron strip complete all as specified and directed

Supply and fixing for rotational moulded polyethylene water storage tank of storage capacity 1000 Litres (cylindrical vertical with closed top) hoisted and fixed in position including fixing of inlet and outlet pipes, flaot valves and other necessary accessories complete all as specified and directed

Material and labour for insulation of MS Chilled water Pipes of any size with Class 'O' Nitrile Sheet of thickness 25 mm having factory evaporated aluminum foil using suitable adhesive of approved make and sealing all the longitudinal joints and circular overlaps with suitable ALP tapes 50 mm x 3 mm complete all as specified and directed

Supply and Fixing in replacement 50 mm thick washable type pre-filters with filter element made out of synthetic non-woven media supported by HDPE mesh on both side including stitching in diamond pattern complete including frame, suitable for efficiency 90% down to 10 micron EU-3 Type complete as sample with mounting frame work all as specified and directed

Detecting the leakage in VRV/VRF unit by giving nitrogen pressure and rectifying the same and charging if refrigerant gas R-410A complete all as specified and directed

Roughening surfaces of old concrete floor by picking, sweeping clean and washing down with water to remove dust, etc complete all as specified and directed

Material and labour old size Brickwork with fly ash bricks, straight or curved on plan exc 6m mean radius, built in cement mortar 1:4 complete all as specified and directed

Material and labour Rendering 15mm thick on fair faces of brick work or concrete surfaces in cement mortar 1:4. finished even and smooth without using extra cement complete all as specified and directed

Material and labour PCC 1:2:4 type B-1 (using 20mm graded stone aggregate) as in copping complete all as specified and directed

Material and labour PCC 1:2:4 type B-2 (using 40mm graded stone aggregate) as in walls or retaining walls, any thickness, size or shape including pilasters, buttresses columns, pillars, boundary pillars and posts (including caps and bases) incl formwork complete all as specified and directed

Supply and fixing for steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to I. S.1161- 1979 grade St.-240 complete all as specified and directed

Supply and fixing for Pre- painted galvatume aluminum zinc coating GI based corrugated steel she et 0.50mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and directed

Pre-painted galvalume aluminum zinc coating GI based Plain steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and directed .

Material and labour for preparation of new steel Surfaces of any description, over 10cm in width or girth,not otherwise described and applying two coats of synthetic enamel paint over a coat of zinc crome complete all as specified and directed

Material and labour for applying two coats of cement base paint on walls including preparation of new plastered surfaces complete all as specified and directed

Akhil Enterprises