REPAIR/MAINT OF OLD RUSTED GI/PPR/MS PIPELINE, VALVES, CLEANING OF TANKS, CENTRAL HEATING SYSTEM OTHER CONNECTED WORKS AT ALG TAWANG UNDER GE TAWANG

Amount

Taking up and down GI/ PP-R pipe of undermentioned sizes tubing with all accessoreis complete all as specified and directed :-

1. (a) 40 mm dia to 50 mm dia

1. (b) 80 mm dia

M & L for 3- layer PP-R Polypropylene random copolymer) pipes of following sizes ISI marked, IS-15801 SDR 7.4 (PN 10) & SDR 11 UV stablised and inner antimicrobial and outer UV stabilized fusion welded having thermal stability for hot & cold water supply all PP-R plain brass threaded polypropylene random fitting laid in trenches /walls/cellings or laying in floors incl fitting and fixture complete all as specified and directed :-

4. (a) 80 mm dia

4. (b) 40 mm dia

4. (c) 50 mm dia

M & L for cutting and replacing the existing old unserviceable MS ERW pipe with flanged ends, medium grade in any length laid on suitable PCC pillar/MS angle supports, clamps, bolts and nuts including necessary tees, elbows, flanges by proper welding all as specified and directed of following sizes:

8. (a) 150 mm dia

8. (b) 80 mm dia

8. (c) 65 mm dia

8. (d) 25 mm bore

8. (e) 32 mm bore

8. (d) 50 mm bore

Excavation in trenches not exceeding 1.5m in width and n. exc 1.5m depth for taking out and laying GI/PPR pipes and getting out in hard/dense soil all as specified and directed.

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

Removing excavated surplus soil not exceeding 50m and depositing where directed at a level not exc 1.5m above the starting points in soil all as specified and directed.

M & L for cleaning of under ground water sump, Sedimantation tank , Raw water tanks by scraping the internal surface with steel wire brushes, pumping out water up to bottom level complete drain out removing silt / debris descaling with solution and applying two coats of lime white wash internally as directed by the Engr - in- charge, cleaning the internal surface of the tanks to the complete satisfaction and as directed by the Engr-in -charge for the capacity 100000 Ltr

M & L for cleaning of over head water sump, sedimantation tank , raw water tanks by scraping the internal surface with steel wire brushes, pumping out water up to bottom level complete drain out removing silt / debris descaling with solution and applying two coats of lime white wash internally as directed by the Engr - in- charge, cleaning the internal surface of the tanks to the complete satisfaction and as directed by the Engr-in -charge for the capacity 100000 Ltr

M & L for cleaning of under ground water sump, Sedimantation tank , Raw water tanks by scraping the internal surface with steel wire brushes, pumping out water up to bottom level complete drain out removing silt / debris descaling with solution and applying two coats of lime white wash internally as directed by the Engr - in- charge, cleaning the internal surface of the tanks to the complete satisfaction and as directed by the Engr-in -charge for the capacity 50000 Ltr

S&F in replacement of PPR gate valves (brass insert) of under mentioned sizes including cutting and inserting in existing pipe or fixing in new laid pipe with required fittings and fixtures including taking down complete all as specified and as directed.

21. (a) 80 mm dia

21. (b) 40 mm dia

21. (c) 50 mm dia

M&L for PCC 1:3:6 type C1 (20mm graded aggregate) precast cement concrete block masonary with solid blocks exc. 10cm in width and setting in CM 1:4 etc complete

M & L for Cutting existing pipe making connection of PPR distribution branch with PPR main of size 80 mm bore and inserting Tee conncetion and making fusion joint etc.all as specified and directed.

Material and Labour for gun metal globe or gate valves of approved make with iron wheel, complying to relevant IS with latest amendments including taking down complete all as specified and as directed.

27. (a) 40 mm bore

27. (b) 50 mm bore

Material and labour for replacement of pressure gauge 4" dial 0-21 kgs rating all as specified and directed. Make:HD Fire protect ltd.

Material and labour for replacement of pressure gauge 8" dial 0-21 kgs rating all as specified and directed. Make:HD Fire protect ltd.

Material and labour for dismantling heating plant outdoor unit/AHU/ centrifugal pump coupled electric motor of following capacity from the foundation bed for repairs by removing the coupling and foundation bolts etc. and taking to workshop and removing burnt windings, cleaning the stator and rotor with cleaning agent , rewinding the motor with appropriate gauge of super enameled copper wire of same gauge and same number of turnsof existing make ,insulating winding with existing class of insulation,including supply and replacement of foundation nut bolts same to site and re installation of motor with suitable packing materials and testing the motor satisfactory performance all as specified and directed.:

Disconnecting the filter bed from AHU and cleaning the air filters , removal of complete dirt deposited inside the filter bed area by spray of scale removing agent and flushing out with fresh water till removal of complete dirt from the fins area and flushing out with air blower and refixing the same in existing position complete all as specified and directed.

Disconnecting the filter bed from indoor unit and cleaning the air filters , removal of complete dirt deposited inside the filter bed area by spray of scale removing agent d flushing out with air blower and refixing the same in existing position complete all as specified and directed.

Material and labour for carrying out leak test for the refrigent carrying copper pipe with insulation from outdoor unit to indoor unit for any leakage of refrigerant with Co2 gas under constant pressure of 250 psi (17 kg/cm2) after complete transfer of refrigerant gas from the entire system , rectification of leakages including cutting and brazing the refrigerant system whrever required and replacement of reflon washers of valves, copper tubing flare nuts etc. reneutralising after the pressure holds good for atleast 24 hrs vaccumisation charging the system with refrigerant gas, testing and commisioning of central heating system complete all as directed by engineer-in-charge.(necessary copper pipes , nitrogen gas and welding works are deemed tobe included in the quoted rate) complete all as specified and directed.

Supply of calcium based, high strength chlorination chemical for disinfectant, in granual form for water treatment in factory sealed non returnable HDPE containers (40 to 50 Kg each) having chlorine concentration level of 70% complete all as specified and as directed.

Supply, installation and commisioning inreplacement of floor standing water dispenser having functionality of cooling and heating the water having R-134A as refrigerant (non CFC) OF 20 liters capacity all as specified and directed. Make:Blue star model no. BWD3FMRGA or equivalent in Usha/LG complete all as specified and directed.

M/S G M BUILDERS

M/S T D Enterprises

M/S NAVA BHARAT BUILDERS

M/S L G BUILDERS

M/S L.N. TRADERS

SHELLUNG CONSTRUCTION