JNU/Engg./31/ 2019-20 (Re-Call)

Amount

Operation and maintenance of Solar water heating system for following hostels in single shift from 6 AM i/c providing and fixing petty minor items like jute, old dhoties, gaskets, washers of solar panel , safeda, M-Seal, Composite Tee, Bend, Elbow, socket of suitable size , general cleaning, minor welding/ brazing of solar panel, piping hot and cold water tanks etc complete with replacement of defective parts supplied by department etc as required. a) Ganga -8000LPD b) Jhelum -8000LPD c) Godavari -8000 LPD, d) Periyar-8000LPD e) Kaveri-8000LPD f) Koyana-16000 LPD g) Satluj-8000LPD h) Shipra -16000 LPD i) Narmada-6000LPD j) Sabarmati-6000 LPD k) Tapti-8000LPD l) Mahi-Mandavi-8000LPD m) Chandrabhaga-8000 LPD n) Lohit-8000LPD o) Brahamputra-4000 LPD

SITC of 2000 Ltr Solar water heating tank horizontal type made of minimum 2 mm thick 304 grade Stainless steel with SS heat exchanger having 3 layer high build ceramic filled food grade epoxy coating for tank primary corrosion protection & Magnesium Alloy based self sacrificial Anode system for tank secondary corrosion protection complete with 100 mm rock wool insulation along with 24 SWG aluminum cladding etc. i/c MS structure upto 1.5 mtr height for mounting of tank as required.

Repairing of 100LPD Flat plate collector of solar water heating system including P/F of 4 mm thick glass, brazing etc. complete as required.

SITC of ISI marked 100 LPD (2 sq. mm absorber area) flat plate collector having copper water tube ,Shell thickness 0.8mm, pre-coated GI cladding, PUF insulation, 4 mm thick toughened glass on top of solar water heating system complete with dismantling of old damaged panel as required.

Providing and fixing of brass flange of collector with EPDM gaskets & SS Nut bolts i/c dismantling of old existing plastic flanges of collector, gaskets and nut bolts etc complete as required

Special repair of Hot water SS tank of capacity 1000/1500/2000 LPD i/c P/F of GI & SS nipple ,TIG/Argon welding etc. complete with dismantling of existing insulation & re fixing the insulation complete as required.

Providing and fixing Composite pipe of following sizes with all accessories on the surface i/c P/F of 9 mm thick nitril insulation on the surface etc. complete as required.

25mm dia nominal bore

15mm dia nominal bore

Providing and fixing of 15 mm brass Air release valve complete as required.

Servicing & de- scaling of, Solar water heating tank, Solar collector & complete system piping solar water heating system with special de-scaling chemicals rotated though pump complete as required.

Supplying, laying/ fixing, testing and commissioning of 50 MM thickness resin bonded fiber glass pipe section insulation for following size having density 80 kg/cum or mineral wool (non combustible) having density of 144 Kg/ cu m duly covered with a layer of 120 gm/ sq.m polythene sheet (vapour barrier) on existing pipe and finally applying 0.63mm aluminium sheet cladding as required.

32 mm dia nominal bore

Providing and fixing G.I. pipes complete with G.I. fittings and clamps, i/c cutting and making good the walls etc.(Internal work - Exposed on wall)

20 mm dia nominal bore

32 mm dia nominal bore

Providing and fixing of gun metal gate valve with C.I. wheel of approved quality (screwed end) :

20 mm dia nominal bore

32 mm dia nominal bore

Providing and fixing G.I. Union in G.I. pipe including cutting and threading the pipe and making long screws etc. complete (New work)

32 mm dia nominal bore

Making connection of G.I. distribution branch with G.I. main of following sizes by providing and fixing tee, including cutting and threading the pipe etc. complete

25 to 40 mm nominal bore

Shamshad Contractor