NCTPS I SE MI circle Boiler Maintenance Division Annual Overhaul works for the year 24 25 Specification No 173 24 25

Amount

Lightly resin bonded wool mattresses of 75 mm thick confirming to IS 8183 of latest issue of with 1/2'' x 23 SWG wire netting at single side. Bulk density = 150 kg/Cu.m, Material= Basalt rock, Size= 1.52m x 1.22m x 75mm thick packed in HDPE bags. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works).

MS square plate 70x70x1.5mm. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

GI Holding strip 65x652x2mm (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

MS plate 2 mm thick Including loading, transportation & unloading charges. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

MS Angle size: 50 x 50 x 6 mm Including loading, transportation & unloading charges. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

MS insulation pin size: 6mm x 225mm length. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

MS cladding support channel for Insulation. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

GI Corrugated Sheets 920mmX1830mm thick 18SWG Material: GI (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works).

GI sheet of size: 2500 X 1000 mm, zinc coating: 180 gms/ Sq.mtr, thickness of GI sheet: 0.63mm (24G) IS standard: IS 277, class -VI (supply to the NCTPS-I stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works)

MS corrugated sheet size 1000 mm x1500 mm material MS (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of LRB wool, Iron & steel material and as per the direction of Engineer in charge the materials will be supplied by TANGEDCO available at stores during execution of works).

Providing temporary scaffolding for positioning, aligning and welding of scaffolding materials & dismantling the temporary scaffolding after completion of works. Inclusive of consumables and hire charges for T&P’s.

Renewal / Rectification of damaged insulation sheet: This work involves removal of existing damaged outer sheet; fixing of new/retrived GI/Al sheet after layimg of insulation. Inclusive of consumables and hire charges for T&P’s.

Removal and Relaying of Insulation Wool: This work involves removal of existing insulation completely, welding of pins, laying of wool mattresses of 2 layers (150mm), sewing the joints of mattresses by GI wire, screwing the casing support with retainer, wounding GI binding wire across the retainer. Inclusive of consumables and hire charges for T&P’s.

Removal and Relaying of MS / GI corrugated cladding Sheets: This work involves Cutting and removal of the existing M.S / GI Corrugated sheets, fixing of new/old sheets, welding with channel of boiler structure. Inclusive of consumables and hire charges for T&P’s. (Necessary G.I corrugate sheet supplied by TANGEDCO if available at Store)

PLASTERING WORK. Mixing of cement pluff mixture and applying the plastering over the insulation done in steam lines like Burner corner, Drum, IBD tank etc., Inclusive of cost of CAT 9 self setting cement, consumables and hire charges for T&P's.

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

Fabrication cost for erection of frame for holding the MS corrugated cladding sheet. Inclusive of vehicle hire charges, consumables and T&P’s etc.

R RAMACHANDRAN (BID ID -1151297)