Repairing of Lancashire Boiler No.WBL 10283 of Jemehari Colliery under Satgram Sripur Area.

Amount

Item description

The staggered & isolated pitting were noticed upto 2.0mm(approx) Inside on steam side surface of the RHS Flue around 8 o'clock to 12 o'clock position at 2nd and 4th streak. The position where the thickness gauging was carried are to be built up by electric arc welding with pre-post heat treatment & dressed smooth to original shape & thickness

The staggered & isolated pitting were noticed upto 2.0mm(approx) at around 6 o'clock postion of the Boiler front end plate, ner mud hole. The position where the thickness gauging was carried are to be built up by electric arc welding with pre-post heat treatment & dressed smooth to original shape & thickness

The worn out defective fusible plug are to be dismantled. The mounting pads of both the Furness are to be re-threaded & dressed properly. Then the new IBR quality fusible plugs are to be fitted in original manner. (Cost of New 1.1/2" IBR Certified Fusible Plugs 2 nos)

Cutting out rivets of Strake no 1 plate with angle ring at a position of 3:30 o'clock to 7:30 o'clock of the Boiler by using oxy-acetylene cutter... 40 rivets

Replacing the Rivets of Strake no 1 plate with angle ring at a position of 3:30 o'clock to 7:30 o'clock of the Boiler with newly fabricated IBR Rivets from IBR quality IS/1875… 40 Rivets

Cutting out of Damaged portion of Angle Plate from the Boiler as marked by the Boiler Inspector

Cost of BQ Angle plate of same specification 5ft and cost of bending the angle.

Cost of setting and final riveting of the Angle plate to the Boiler

The main steam stop valve is to be dismantled & repaired the same by replacing worn out spares & then re-fitting the same in original manner.

The High Pressure Low Water Valve is to be dismantled & repaired the same by replacing worn out spares & then re-fitting the same in original manner.

Cost of repairing Safty Valve by thorough dismantling and replacing of worn out spares.

Cost of repairing Feed Check Valve by replacing the worn out studs and caulking of Feed Check Valve pad

Cost of repairing Blow Down Valve by thorough dismantling and build up of spindle for making it leak proof. Then refitting to the Boiler after replacing of all studs.

Gauge column cock is to be repaired by replacing the Sleeve bush and spindle. Then it is to be refitted with necessary joint packing and Gauge Glass. (2 Nos)

The Bottom Manhole Studs were found to be damaged and needs to be replaced with newly fabricated Studs

The staggered & isolated pitting were noticed on the Blow Down Bend. The position where the thickness gauging was carried are to be built up by electric arc welding with pre-post heat treatment & dressed smooth to original shape & thickness.

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

Refitting of all the Mounting & fittings with necessary joint packings etc. to the Boiler with proper alignment.

Total impact of GST for the purpose of CTC

M/s Prasanta Karmakar