Repairing of boiler no WBL 11105 at Siduli Colliery under Kenda Area for timely certification

Amount

Item Description/ Heading

Supply and fitting of new IBR quality fusible plugs(2 nos) in original manner with IBR test certificate and approval from Boiler Inspector

Cutting out of old adaptors 2 nos fabrication of two new adaptors from HT bar and then welding the same in the boiler

Staggered and isolated pitting was noticed on steam side surface of RHS flute at 4 o'clock to 8'o clock position at 1st strake. The position where the thickness gauging was carried are to be built up by electric arc welding with pre post heat treatment and dressed smooth to original shape and thickness

Staggered and isolated pitting was noticed on steam side surface of RHS flute at 4 o'clock to 8'o clock position at 2nd strake. The position where the thickness gauging was carried are to be built up by electric arc welding with pre post heat treatment and dressed smooth to original shape and thickness

All the Adamson ring joints of the boiler is to be caulked up to leak proof. Then the caulked area is to be dressed smooth

The main steam stop valve is to be dismantled thoroughly. The inner seat and the valves are to be GumMetal welded and machined to remove the leakage of the seat and valve. The spindle and the gland clearance are to be repaired by SS welding and machining the spindle upto leak proof. Then the valve ais to be refitted with necessary joing packing up to running order

The bottom manhole studs are to be replaced with newly fabriated studs as per IBR norms

Charges for replacement of 20 nos rivet of front end Adamson ring of both LHS and RHS flues

Fabrication of new blow down bend as per exisiting size and fitting the same in original manner

Repairing of Gauge Column Cocks by thorough dismantling of all parts and acid cleaning. The worn out SS spindles are to be replaced with new IBR quality sleeve bush, then they are to be re-fitted with necessary joint packings etc

The feed check valve is to be dismantled and cleaned thoroughly. The inner valve seat, valve NRV are to be repaired and valve spindles, gland is to be replaced with new one and refitted with necessary joint packings etc

Supply and fitting of 2" blow down valve(GM) with IBR TC after approval from Directorate of Boiler, Kolkata

Blanking of boiler using blank plates and necessary joints. Then filling the boiler with water

On completion of repairing job, the boiler is to be tested hydraulically with a pressure of 225lb/sq with satisfaction in presence of Dy. Director of Boilers, Durgapur

Total impact of GST for the purpose of CTC

C L Engineering Concern