NCTPS I SE MI circle Boiler Maintenance Division Annual Overhaul works for the year 24 25 Specification No 216 24 25

Amount

U – Clamp (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charge. The materials will be supplied by TNPGCL if available at stores during execution of works)

Cotter Pin M 39 X 3 X 175 MM, HT Head Bolt (Half Thread) with Spring and Washer. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charge. The materials will be supplied by TNPGCL if available at stores during execution of works)

Channel Size: 140 mm x 100 mm x 1000 mm carbon steel Including loading, transportation & Unloading to stores. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charge. The materials will be supplied by TNPGCL if available at stores during execution of works)

Corton Steel Plate 3.15 mm Thick Including loading, transportation & Unloading to stores. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charge. The materials will be supplied by TNPGCL if available at stores during execution of works)

Charges for leading, lifting and arranging platform and scaffolding in platen SH coil to facilitate rectification of sagged Radiant roof tubes, Dock house inner side and dismantling after completion of work. Including consumables and hire charges for T&P's.

Charges for bending of plates: Drawl of 3.15 / 10 mm M.S plate from central stores transporting the materials to outside workshop cutting into required size, bending to the required size and profile, transporting back to NCTPS boiler area. Including consumables and hire charges for T&P's.

Charges for renewal / rectification of sagged radiant roof tubes of size 51 mm X 5 mm (above 44.5 mm dia) inclusive of cutting, lifting, hot correction, welding and locking its original position including cost of consumables and T&P's. (Required tubes will be supplied by TNPGCL)

Charges for fin welding: Charges for fin welding along the spool piece of radiant roof tubes by cleaning, surface preparation and welding. Including consumables and hire charges for T&P's. (Required tubes will be supplied by TNPGCL)

Charges for Cutting and removal of existing damaged / eroded fabricated channel in penthouse at 52mtr level and devolution of the retrieved material to stores and rectification of damaged eroded fabricated channel in penthouse using new fabricated channel and patch up work, arresting the 'U' clamp, inserting peg pins in the radiant roof tube and welding with supporting channel in the boiler - Ist pass. Including consumables and hire charges for T&P's.

Skin casing welding and patch up work in penthouse area and Dock house inner side (This work involves removing refractory, cutting the damaged existing skin casing sheet wherever required, Welding with new skin casing sheet) Including consumables and hire charges for T&P's.

Renewal / reconditioning of metallic expansion joints:- Work involves arresting the upstream and downstream of duct, cutting and removal of existing eroded cover plate and metallic expansion joints and gauching. Leading, lifting, positioning of new expansion joint, aligning with the duct channel and complete welding. Style#1 Ist pass. Including consumables and hire charges for T&P's.

Refractory: Charges for chipping removal of old defective refractory, cleaning, surface preparation, patch work new refractory in various elevations of Boiler and disposing removed refractory from site. i) Charges for transporting the refractory from stores and unloading at site, leading, lifting, stacking at 7m to 52m elevation of Boiler and removing the waste refractory from Boiler lowering to the ground floor, loading to tipper and disposing at waste disposal area of TPS. ii) Charges for chipping removal of old defective refractory, cleaning, surface preparation, mixing the refractory with water application and curing the patch worked refractory in Boiler at various elevation. Including consumables and hire charges for T&P's.

CKEE ENGINEERING PRIVATE LIMITED (BID ID -1201071)