REPAIR MAINTENACE OF AC DUCTS AND CONNECTED WORKS OF CENTRAL AC PLANTS UNDER GE(U) PM DELHI CANTT10

Dismantling old/ Unserviceable/ GI Duct & S&F in repairs of GI duct any size/shape/dia with insulation from walls, roofs, ceiling for repair /patch work /replacement complete Including Ducting Supports , rubber gaskets, elbows, vanes, & supports as per (IS 655) etc. from any location at Central AC plants Under GE(U) P&M Delhi Cantt compelte all as specified and directed.

(a) 24 gauge ( thickness 0.63mm )

(b) 22 gauge ( thickness 0.8mm )

(b) 20 gauge ( thickness 1.0mm )

Supply, fabrication ,Installation, Balancing and Commissioning of GSS sheet metal rectangular ducts/ elbows as per site requirement with supports as per IS 655-2010 complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as site requirements of following sheet thickness complete as required at site all as specified and directed.

(a) 24 gauge ( thickness 0.63mm )

(b) 22 gauge ( thickness 0.8mm )

( c) 20 gauge ( thickness 1.0mm )

Supply, fixing in replacement of powder coated extruded aluminum rectangular diffusers complete with black anodized extruded aluminum Volume control damper (VCD) (wherever specified), nuts, bolts, screws etc.complete old(refixed) and as required at site all as specified and directed.

(a) Supply of required sizes with volume control damper (610MMX610MM)

(b) Supply of Return of required sizes without volume control damper (610MMX610MM)

Supply & Fixing of powder in replacement coated extruded aluminum supply & return grilles complete with nuts, bolts, screws etc. to make the system complete, complete old(refixed) and as required at site all as specified and directed.

Supply and installation of thermal insulation material for non-exposed Ducts with closed cell class o nitrile rubber elastomeric insulation of density 40-60 Kg/m3 thermal conductivity of 0.033-0.038 W/mk and µ>=7000 (k-flex st) to be applied on ducts using manufacturers recommended rubber based adhesive as per the approved specification the material should be from global approved & UL approved for old(refixed) and as required at site complete all as specified and directed.

(a) 13 mm thick

(b) 19 mm thick

(c) 25 mm thick

Supply, fixing, Testing and commissioning in replacement butterfly valve of following size with cast iron body, seat of black nitric rubber, nylon coated S..G. Iron disc, PTFE coated SS ( AISI 410 ) shaft, with companion flanges, nuts, bolts, gaskets tec Complete as required. These valves shall confirm to BS:5155 MSS SP.67 & API. 6098 and shall be designed to fit without gaskets between mating and seal in both direction . The valves shall be of integral moulded design complete all as specified and directed. including taking down of old unserviceable one.

Suitable for 40 mm internal dia pipe

Suitable for 50 mm internal dia pipe

Suitable for 65 mm internal dia pipe

Suitable for 80 mm internal dia pipe

Suitable for 100 mm internal dia pipe

Suitable for 125 mm internal dia pipe

S&F in replacement with anchor fastener angle iron , MS flat to support duct with angle iron, flats, nut bolt washers etc. Necessary welding work involved is also deemed to be included in quoted rate include cutting fabrication welding of angle iron / MS Flat, repair to RCC wall, cost of anchor fastener etc and Painting with two coat of synthetic enamel paint over and including one coat red oxide primer complete

Supply, installation, testing and commissioning of flexible fire retardant canvas connector cloth including removing of old one complete all as specified and directed.

Supply, fix in repair testing and commissioning in replacement of indoor type weather proof LT panel board fron opening hinged type , double door with locking arrangement complete and consisting of the following items:Make of panel-L&T/UNILAC/UNIVERSAL/SHALABH (a) MCCB with 400 Amps 50 KA, 4 pole , 415 volts,50 HZ with earth fault relay ( incoming)- 01 nos and including BUS BAR, voltmeter and ammeter. (b) MCCB, 160 Amps 25 KA, 4 pole , 415 volts,50 HZ ( Out going for compressor) - 03 nos Make of MCCB. (c) MCCB, 63 Amps 16 KA, 4 pole , 415 volts,50 HZ ( Out going for AHU -02 Nos) - 02 nos and Make of MCCB. (d) MCCB, 63 Amps 16 KA, 4 pole , 415 volts,50 HZ ( Out going for condenser pump and CT fan ) - 04 nos and Make of MCCB. (e) MCCB , 100 Amp 16 KA , 450 volts (outgoing spare ) -02 Nos and Make of MCCB.

Dismantling Wall and ceiling boards (fibre, pulp, insulation, etc.) or insulation boards/slabs/ blankets, any thickness, including cover fillets etc complete all as specified and as directed.

Supply and fixing powder coated Gl frame work for seamless ceiling comprising of Gl perimeter channnel 0.55 mm thick with two unequal flanges of 20 and 30 mm and web of 27 mm, fixed to surrounding wall using nylon sleeves and screws at 450 mm centre to centre/intermediate channel 0.9 mm thick having two equal flanges of 15 mm each and web of 45 mm, suspended from soffit at approx 900 mm centre to centre with Gl cleat and steel expansion fasteners with and including ceiling section (not exc 1.2 m length) of 0.55 mm thickness having kurled web of 50 mm and flange of 26 mm each with lips of 10.5 mm, fixed to the intermediate channel with connecting clips across the intermediate channel at 457 mm centre to centre complete all as specified and as directed.

Supply and fixing Hangers 6 mm dia. G.I. (upto 1200mm length) adjusting level, fixed to roof slabs by means of ceilling cleats made out of G.I. flat 40 x 3 mm size, 60mm long and expansion hold fasteners 12.5mm dia, 40mm long complete all as specified and as directed.

Supply and fixing 4.00 mm thick Non asbestos fibre cement building boards (E Board), designer pattern, fixed or laid/ inserted to timber/GI/Aluminium framework with screws complete all as specified and as directed.

Supply and fixing false ceiling of 12.5 mm thick tapered edge gypsum board conforming to IS 2095 including providing and fixing frame work made out of special sections power pressed from MS Sheet and galvanised in accordance with zink coating and consisting of angle cleat of size 25 mm wide X 1.8 mm thick with flange of 22 mm and 37 mm at 1.2 mtr C/C , Angle fixed to the ceiling with dash fastener 12.5 mm dia x 40 mm long with 6 mm dia bolts to the angle hangers of 25x25x5 mm running @1.2 mtr C/C to which the ceiling section 0.5 mm thick bottom wedge of 80 mm with tapered flanges of 26 mm , shall be fixed in a direction perpendicular to GI Channel with connecting clips made out of 2.64 mm dia x 130 mm long GI wire at every in including fixing the gypsum board with ceiling section and perimeter channel 0.5 mm thick 27 mm high having flanges of 20 mm and 30 mm long the perimeter of ceiling fixed to wall / partition with the help of rawl plug at 450 mm c/c with 25 mm long screws @ 230 mm internal including jointing and fixing to a flush finish of tapered and square edge the gypsum board with filler and finish with POP as per approved colour, paper tapes including making opening for light fittings ,AC grills, diffusers cut outs made with frames of perimeter channels complete in plain horizontally / vertically location including applying coats of plastic emulsion paint over a coat of approved primer on gypsum board false ceiling horizontally / vertically as specified (at ceiling height up to 8 mtr appx) complete all as specified and directed.

Material and Labour for insulation of MS pipe 40 mm bore heavy grade with all fittings laid in floors or fixed to walls and ceiling etc including PUF insulation and aluminium cladding including taking out/ down of existing pipe complete all as specified and directed.

All as per item No. 15.00 here-in-before but size of pipe 50 /65 mm dia.

All as per item No. 15.00 here-in-before but size of pipe 80/100 mm dia.

All as per item No. 15.00 here-in-before but size of pipe 200mm dia.

All as per item No. 15.00 here-in-before but size of pipe 250mm dia.

Material and labour for maintenance of AHU supply panel / feeder pillar/LT panel indoor/outdoor type including removing the carbonized/melted sparked thimbles, cleaning the carbonized bus bar making cable ends fresh and supply and crimping new thimbles/lugs and fixing the cable on bus bar/MCCB/Main switch/MCB including providing new nut bolts and washer if required greasing the doors of feeder pillar/LT panel outdoor/indoor type complete all as specified & directed.

Supply & fixing in replacement 1000 litres capacity triple layered rotational moulded polyethylene water storage tank (cylindrical vertical with closed top) complete all as specified and as directed.

Supply & fixing in replacement 2000 litres capacity triple layered rotational moulded polyethylene water storage tank (cylindrical vertical with closed top) complete all as specified and as directed.

Opening covers of AHU, cleaning of the AHU coil (Heating & Cooling) to bring down the high pressure, cleaning of the dust particles formed on the coil system with diluted 'ASFOCLEAN' chemical by pouring on the coil with leg pump or mechanical system till the clearing of the dust on the coil as primary wash and using detergent powder or surf water as final wash and including welding/ brazing, wherever required to arrest leakages, testing complete all as directed.

Material and Labour for Painting of CI /MS /GI pipe 40 mm bore heavy grade with all fittings laid in floors or fixed to walls and ceiling etc including any type butterfly Valve before as required and painting with two coat of synthetic enamel paint over and including one coat red oxide primer complete including taking down of old unserviceable paint with caustic soda solution, welding/ Jointing, wherever required to leakages,of existing pipe complete all as specified and directed.

All as per item No. 24 here-in-before but size of pipe 50 /65 mm dia.

All as per item No. 24 here-in-before but size of pipe 80/100 mm dia.

All as per item No. 24 here-in-before but size of pipe 125/150 mm dia.

All as per item No. 24 here-in-before but size of pipe 200 /250 mm dia.

S&F in repairs MCCB 4 Pole, 415 V, 400 Amps with breaking capacity 35 KA, Adjustable type complete all as specified and directed

S&F in repairs ACB 4 Pole, 415 V, with Thermal Magnetic Type Release (Manual Fixed type) of capacity 630 Amps complete all as specified and directed

Supply and fixing Acoustic treatment/ lining of area of AHU room with 22G, GI channels of 50x50 mm size fitted at 600x600mm grids. These grids will be fitted with 50mm thick 32 kg/cum fiber glass insulation covered be fiber glas tissue and 24 G Al perforated sheet and as required . The joint shall be minimium overlapping of 75mm with 30mmx 3mm aluminium strip covering. All corners shall be provided with 20x20x2mm aluminium angle with stainless steel counter sunk screws complete all as specified and directed.