SPECIAL REPAIR/REPLACEMENT OF IRP(IRON REMOVAL PLANT) ALONGWITH OXIDATION CHAMBER AT BARRACKPORE AND PROVN OF HIGH MAST LIGHT QTY 02 AT A AND B BLOCK OF BASE HOSPITAL AT BARRACKPORE UNDER GE BARRACKPORE

Amount

Ditto- as per Item No. 1.00 here-in-before including notes therein but of capacity 45000 LPH and size of Oxidation Plant (appx 1600 mm Dia 1200 mm Height) and size of Iron Removal Filter(appx :3000 mm Dia 2500 mm Height) complete all at Pump House No.3, BGTC old, swiming pool complete all as specified and directed.

Supply only new PVC double nut type strainers suitable for IRP system as per existing size and shape and as per site requirement, complete in all respect all as specified and directed by Eng-in-charge.

M&L for descaling, cleaning, preparing of outer surface of IRP and oxidation chamber as per item No 1.00 and painting of filter plant with two coats of synthetic enamel paint by spray painting over a coat of red oxide primer including preparation of surface of outside surface of filter plant, pipe lines, marking to pipe lines(incoming & outgoing) after scraping old damaged painting including writing the plant name and capacity, date etc with white paint on the plant all as specified and directed by Engineer-in-Charge.

M&L for descaling, watering cleaning, preparing of inner surface of IRP and oxidation chamber as per item No. 1.00 capacity applying one coat of anti-corrosive black bituminous paint suitable for drinking water complete all as specified and directed by Engineer-in-Charge.

M&L for descaling, cleaning, preparing of outer surface of IRP and oxidation chamber as per item No 2.00 and painting of filter plant with two coats of synthetic enamel paint by spray painting over a coat of red oxide primer including preparation of surface of outside surface of filter plant, pipe lines, marking to pipe lines(incoming & outgoing) after scraping old damaged painting including writing the plant name and capacity, date etc with white paint on the plant all as specified and directed by Engineer-in-Charge.

M&L for descaling, watering cleaning, preparing of inner surface of IRP and oxidation chamber as per item No. 2.00 capacity applying one coat of anti-corrosive black bituminous paint suitable for drinking water complete all as specified and directed by Engineer-in-Charge.

Supply of new life sand (cleaned) of 20 x 40 mesh free from clay, fine particles, soft grains and dirt of every description, conforming to IS 8419, Part-I and complete all as specified and directed.

Supply Only, Filtration Media Gravel, size 1/8" to 1/4", consisting of hard ,rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind, conforming to IS 8419, Part-I complete all as specified and directed.

Supply Only, Filtration Media Gravel, size 1/4" to 1/2", consisting of hard, rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind, conforming to IS 8419, Part-I complete all as specified and directed.

Supply Only, Filtration Media Gravel, size 1/2" to 1.0", consisting of hard, rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind, conforming to IS 8419, Part-I complete all as specified and directed.

Supply Only, Filtration Media Gravel, size 1.5" to 2", consisting of hard, rounded stones with average specific gravity of not less than 2.5 and free from clay, sand, loam and organic impurities of any kind, conforming to IS 8419, Part-I complete all as specified and directed.

Supply Only, Manganese Dioxide (MnO2) media, approximate size 10 mm X 15 mm, with (MnO2) contents minimum 65%, alongwith filter suitable for use in oxidation chamber complete all as specified and directed.

S&F of following dia tubes (Heavy class/Grade) galvanized iron with all fittings (Such as elbow, Tee, Socket etc) and fixed to walls and ceiling or laid in floors etc complete including taking down old unserviceable GI pipe:-

150 mm dia

100 mm dia

80 mm dia

40 mm dia

S&F in repairs of butterfly valve 150 mm dia complete all as specified and directed.

S&F in repairs of butterfly valve 100 mm dia complete all as specified and directed.

S&F in repairs of Pressure gauge for upto 10 Kg pressure having size 4 inch dia including necessary fittings complete all as specified and directed.

M&L high mast is fabricated from steel plates conforming to BS-EN 10025, cut and folded to form a polygonal (min 20 sides) section, masts should be in two sections for 16 Mtr heights having only longitudinal weld conforming to BS 5135/AWS. The mast is provided with fully penetrated flange which is free from any laminations or incursions. The welded connection of the base flange is fully developed to the strength of the entire section. The base flange is provided with supplementary gussets between bolt holes to ensure elimation of helical stress concentration. For environmental protection of the mast, the entire fabricated mast is Hot Dip Galvanised (Single dip) internally and externally, having uniform coating thickness of 85 microns for bottom and 65 microns for top sections. The top section should be 3mm thick and bottom 4mm thick with door opening size 1000x300mm at base of the mast. The base plate should not be less than 670x670x25mm with 08 Nos bolts of M30 dia of length 850mm long (PCD of foundation bolts 460) and provision with lantern carrage made out of MS IS-2062 channel, MG-75 or 60mm square tube, 750 Kgs of load carrying capacity with double drum which oparated by motor 1.5KW/2.0HP or manual provided with stainless steel wire rope grade AISI-316,6mm dia of 3 Nos for lantern carriage and 02 Nos for doubel drum winch, 2350 Kgs per stainless steel rope of breaking capacity, construction 7/19 and providing of power tool integral motor re-reversible 180 to 260 RPM, 415 volts, and adjustable torque limitor all as directed. Trailing cables should have 5 core 4 Sqmm and have 06 Nos of LED (06 Nos of 1x200 watts accessories like super for all fittings) including Aviation obstruction light, lightning arrester spike with earth connected and all specifications are complete as specified and directed. (Note :- Necessory earth work of any type of soil, foundation, PCC/RCC work, removal and return filling of soil etc with the following specifications:- (i) Excavation in soft/loose soil of size 2.30x2.30x1.5mtr (ii) PCC (1:4:8) type D2 of size 2.30x2.30x0.10mtr (iii) RCC as in mat slab of size 2.10x2.10x.3mtr reinforced with 10mm TMT bars 250mm c/c both ways. (iv) RCC in pedestal of size 1.00x1.00x1.40 (1.10mtr below ground level and 0.30 mtr above GL) reinforced with 24 Nos of 12mm TNT bars with stirrups 8mm TMT @100 c/c. Mast structure should have design to sustain an assumed maximum reaction arising from wind speed as per IS-875(Part3) 1987(three seconds) which is measured at a height of 10mtrs above ground level. High mast should be suitable for a wind speed of 225 Kmph and as directed.)

M&L panel board weather proof, vermin proof, double door made out of MS sheet 16 SWG 600x600x300mm outdoor type suitable for 3 phase, 4 wire, 415 volts, with aluminium bus bar strips of 100 Amps capacity with necessary clamps nuts, bolts and washers floor mounted type made with angle iron legs 25x25x6mm thick and painted with two coats of synthetic enammeled paint over one coat of red oxide primer all as directed. The following items are fitted in the panel board:- (a) Incomming:- MCCB 63 Amps 4 pole and rupturing capacity 10 KA - 01 No (Make:- L&T) (b) Timer daily setting type with synchronus motor (Make:-L&T/Legrand). (c) Contactor ML-3, 3 Pole. (d) Indicating lamps- 01 Set

S&F of LED flood light fittings of 200 watt, 230 volt, AC outdoor type with thermal management in multiple optics and equipped with IP66 protection, with impact and corrosion resistant complete with driver and lamp complete all as specified and directed. (Make:- Philips Cat No. BVP122LED200CW FLWB FG PSU AI/ Crompton Cat No. LFLN 200 60 CDLM/ Surya Cat No. SLE FL 200W IP66 LIVIA or equivalent model of make as per Appx 'A' as mentioned in PS here-in-after)

Excavation in trenches for laying under ground cable, foundation and erection of poles and stays in soft/loose soil not exceeding 1.5 meter wide and not exceeding 1.5 meter deep and getting out complete all as specified and directed.

Returning, filling in, including spreading leveling, watering and well ramming in layers not exceeding 25cm soil all as specified and directed.

Removing surplus excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting points as in soft/loose soil all as specified and directed.

M&L for sand cushioning to under ground cable in trenches/existing cable trenches/ducts in layers of 8 cm deep before laying the cable and 15 cm deep including required watering and consolidation after laying and stretching the cable complete all as specified and directed. (Note: Only punned down volume of sand to be measured)

M&L for brick covering with width equal to length of brick as protection to cable with well burnt sub class ‘B’ bricks of size 250mm x 115mm x .75mm laid dry flat complete all as specified and directed.

Supply, laying and testing of XLPE insulated, armourd, heavy duty electric cable, 1100 volts grade, with aluminium conductor of cross sectional area 16 Sqmm 4 core in trenches, in floors, passing through pipe complete all as specified and directed.

M&L for earthing with glavanised steel earth plate electrode of size 600mmX600mmX6mm thick buried directly in ground (earth pit not less than 2.25 m deep below the ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to the galvanised earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel using GI or steel wire 4mm dia as earthing lead as shown in electrical plate No.3 of SSR Part-I connected to earthing test point all specified or indicated including testing on completion including necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC (1:3:6) type C-1 using 20mm graded stone aggregate pit, funnel, 20mm dia GI medium grade watering pipe , 15mm dia GI medium grade earth lead protection pipe and pre-cast earth pit cover 50mm thick made of RCC (1:1.5:3) type A-1 duly reinforced with 8mm dia TMT bar @150c/c both ways, one lifting handle made out of 10mm dia TMT bar 250 mm long embedded in cover slab and cover, wire, copper lugs etc mesh, charcoal and common salt in alternate layer of 15 cm thick complete all as specified and directed. (Note: Galvanised iron wire of 4mm dia upto 7.5m long including testing is deemed to be included with quoted rate).

CHATTERJEE CONSTRUCTION AND SUPPLIERS

ALOKE ENGINEERING AND COMPANY

M/S PAUL CONSTRUCTION