NCTPS I SE MI circle Boiler Maintenance Division Annual Overhaul works for the year 24 25 Specification No 122 24 25

Amount

Supply of insulation with cladding materials for flue gas duct: Materials for 1 M² : 1) Insulation Wool of size 60 mm thick , Density : 150 Kg / M³ as per : 8183:1993 ; 2) G.I. Sheet 0.63 mm thick of Galvanizing coating 120 gm / M², Class VIII as per IS 277 : 5.12 Kg / M² ; 3) M.S Pin size 6 mm dia X 225 mm : 09 Nos / M² ; 4) Retainer: 70 x 70 x 2 mm : 09 Nos / M², 5) GI casing support of size : 65 x 650 mm : 03 Nos / M² including P&F, F&I, Unloading charges.

Supply of MS 6 mm Rod for providing Mesh to fix outside on top of the duct to lay the insulation. Size: 100 mm X 100 mm X 6 mm, Material : IS 2062

Providing scaffolding for insulation work: Involves making scaffolding for insulation work in FG duct and dismantling the same after completion of work. including hire charges for scaffolding pipes, consumables and T&Ps.

Removal of insulation & GI sheet: Involves Complete removal of insulated cladding sheet, insulated wool, gas cutting and removal of retainers and casing support etc. Devoluting the scrap material to the stores other than wool including consumable & T&P's.

Erection of fabricated MS Mesh for fixing outside on top of the duct to lay the insulation. Size: 100 mm X 100 mm X 6 mm, including consumable and T&P’s.

Laying of Wool: Work involves complete cleaning, welding of pin:09 Nos., laying of wool mattress, welding of retainers:09 Nos., sewing the joint of mattress by GI wire, screwing the casing support:03 Nos. with retainer, wounding the GI binding wire across the retainer , including consumable such as GI wire, cutting gas, welding electrodes and T&P’s.

Fixing of GI Sheet over the insulation wool: Work involves fabrication of new GI sheet, grooving, laying over the wool, including cost of self tap screw, sealing compound, consumables and T&P's etc., and transportation charges.

Clearing of released insulation wool from the works spot: Work involves collection of released waste wool, debris and other unwanted insulation materials from the work spot, gathered in one place and clear, transport for away from the site as per the instruction of Engineer in-charge, including vehicle hire charges, consumable & T&P’s etc.,

R RAMACHANDRAN (BID ID -1095849)