Repairs to reconditioning of supply/return Air Duct for TP area hangar AC plant of capacity of 3x 50 TR for INS Kalinga at Naval Station Bheemunipatnam

Amount

REPAIRS TO RECONDITIONING OF SUPPLY/RETURN AIR DUCT FOR TP AREA HANGAR AC PLANT OF CAPACITY OF 3X 50 TR FOR INS KALINGA AT NAVAL STATION BHEEMUNIPATNAM. The repairs are urgently required to arrest the leakage of supply air to Hangar and return air to AHU to maintain the desired temperature inside the Hangar at TP area Hangar. (a) Dismantling & Removal of Existing rusted and wear tear of supply and return air duct from AHU to Hangar including the other connected items items completely all as specified and directed by Engineer-in-Charge.

M & L for duct insulation with resin bonded fibre glass wool roll of density 24 Kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation 50 mm all as specified and including the following :- (i) M & L for cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc. to make the surface completely free of milllscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (ii) M & L for applying rubber based adhesive CPRX compound. (iii) 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. (iv) 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.

Supply , assembly and erection of GI sheet with C & SS rectangular/square duct made out of 'L' shaped hollow profile, duly factory boxed, incl all acessories such as Corner, Cleat, Carriage bolt, Gasket and appropriate sealant on longitudinal joints etc complete of size 26 Gauge.

M & L Cross arms, bracings, supports, clamps and back plates fabricated from structural steel section including nuts,bolts, washer, welding, bending cold or hot, drilling holes for bolts , in any shape or size as directed and inclusive of one primer coat, one under coat and one finishing coat of paint and all as directed.

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