SPECIAL REPAIR/REPLACEMENT OF BER AIR CONDITIONER PLANT OF CAPACITY 10TR AND RELATED WORKS INSTALLED IN BLDG NO P-143 AT 512 ABWS UNDER AGE E/M-II UNDER GE(CENTRAL) KHADKI

Amount

Dismantaling / removing of BER Central AC Plant of capacity 10 TR with 5 TR standby unit complete from site by disconnecting water connections,pumps,compresser,condenser,gas pipe,AHU from foundation and making site clear for fixing new AC plant and all plant with accessories depositing to MES store yard all as directed by Engineer -in-Charge.

Supply , install , commissioning and testing of Air Cooled Packaged Air Conditioners, comprising of 415V, 3 Phase, 50 Hz , AC Supply of Hermetic/Semi - Hermetically sealed Reciprocating or Hermetically sealed Scroll Compressors , 230V, Single phase , 50 Hz Axial fan motor of Air Cooled condenser with microprocessor based control, including copper refirgerant piping, electrical interconnection between indoor and outdoor units , suitable for operation on R - 22/R - 407c/R -410a refrigerants and of nominal capacity of 5.5TR, including foundation complete all as specified and directed by Eng-In-Charge

Note: The ambient temperature inside the Shielded Chamber and Control room should be within 26 degrees. Humidity inside the Chamber to be kept below 65%. Suitable Air speed and sufficient air changes to meet the requirements to be ensured. The cooled air and exhaust air outlet of the package AC to be connected to the outside across the outer wall of the AC Plant room.

M&L for earthing complete with hot dip galvanized steel pipe in pipe electrode, outer pipe 88mm dia medium grade and inner pipe 55 mm dia including testing, 3 mtr long and having 50x6 mm terminal on inner pipe to connect earthing strip with 14 mm holes for nut bolts, buried directly and vertically in ground with top edge at 30 cm below ground level after making bore hole of 100 mm dia and 3.3 mtr deep using suitable mechanical drilling machine (for drilling near the specified bldg) connected with galvanized steel earthing lead of 25x4 mm strip with minimum two Nos of GI nut bolits and connected to test point from earthing pit. The electrode pipes should be filled with 2x 25 kg bags of carbon based earthing compound. The resistance of the compound should be less than 0.1 Oms . The compound should be highly conductive, hygroscopic, non magnetic, non corrosive in nature and have best moisture retaining qualities with ph value between7-9. Connected to the earthing test point, Fiber reinforced plastic pit not less than 300x300 mm with pit cover, including necessary returning filling & removal of extra soil , to achieved earth resistance value less than 5 Oms including testing complete all as specified

S & F Earth continuity conductor or main earthing lead of size 25 x 4 mm Galvanised iron strip fixed to wall on poreclion/PVC insulator buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthling etc. incl removal of old strips as required all as specified and directed by Engr-in-charge.

Supply , laying,commissioning and testing XLPE insulated PVC sheathed ,Unarmoured Multi strand electric cable Copper conductor, 1100 volt cross sectional area 6 Sqmm 3 core incl removing unserviceable/old cable complete all as specified and as directed.

Supply , laying,commissioning and testing XLPE insulated ,armoured heavy duty electric cable Aluminium conductor, 1100 volt cross sectional area 70 Sqmm 3.5 core incl removing unserviceable/old cable complete all as specified and as directed.

M & L for Mild Steel brackets, frames ,supports and stands of type as required made out of angle iron, flat or strip of grade Fe-410-S of any size as per site requirement etc complete with painting two coat with synthetic enemel paint over a coat of red oxide including removal of old unserviceable brackets & frames etc complete all as specified and as directed by Engr-in-charge .

M & L For fabrication and installation of Glow sign board of size 1.50m X 0.70m made of Flex/Acrylic board, with computer imaging matter is directed by engr-in charge at one side of the board, GI plain sheet cubicle housing, having arrangement to open the flex/Acrylic board and suitable for mounting on wall complete including dismantiling of existing one all as directed by engr-in-charge. Note :- The cost of Fabrication and welding work is included in the quoted rate .

Dismantling & taking out old unservicable , wornout PGI air duct of different sizes including insulations, nuts & bolts complete from any height & any location.

Supply, fabricate and errect PGI air duct made out of 22 gauge PGI sheet with necessary suport, jointing with MS angle/flat iron/MS strip etc, cut in to shape, drilled and counter sunk for screw including bending and welding, riveting and painting two coat of synthetic enamel paint etc, complete and rubber packing suitable size fixed with necessary nut bolts and washers etc complete all as directed by Engr-in-charge. Note : (i) MS angel iron, flat iron etc shall be measured and paid separately (ii) Neccessary welding and fabrication work to be done at actual site at approx 15 m height as per site. Contracor should visit site before quoting the rates.

M&L for duct insulation with 13 mm thick nitric rubber insulation as specified and including the following: (a) 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. (b) M&L for applying rubber based adhesive CPRX compound. (c) M&L for sealing of all longitudinal joints and circular overlaps with and including Aluminium foil tape 50 mm wide, to make the insulation leakproof. (d) 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.

M&L for supplying and fixing Instruction board/flow board /flow chart /shock treatment chart at E/M installations as per the requirment at various locations made out of pre laminated board with digital printing,pasting side beadings of decorative aluminium channel with proper fixing arrengement etc.as directed by Engr-in-charge : - NOTE - (a). Before fabrication of the board, the contactor has to produce a paper printout detailing all dimensions and matter to be displayed so as to get it inspected and passed by Engr-in-Charge. (b). Matter to be displayed, colour of the ACP sheet and colour of Retro Reflective sheet will be as specificed and directed by Engr-in-Charge. (c). The quoted rate is deemed to be inclusive of cost of labour and materials required for fixing of the informatory board at the loaction as specified by Engr-in-Charge.

A-Size( 4' x 3')

B-Size( 3' x 2')

AIRDOT ENGINEERING