REPLACING OF IN BED TUBES IN POWER BOILER #1

Amount

REPLACEMENT OF IN-BED TUBES WITH BENDS : Work involves cutting and removal of top bed coil ( seamless ribbed bore tubes of alloy steel of size 44.5mm OD X 6.3 mm thick ) 3.300mts long and the tube cutting is to be done from the side wall panel at one end and at other end with bend depending upon the condition of the bend, using cutting wheel, Collection and transportation of new tubes, cutting to the required length, one end bending of tubes along with edge preparation of both ends of the new and existing tubes without allowing any foreign particles to go inside the tubes, while alignment and welding. The inner surface of new tubes are to be ground to a length of 25mm at both ends. All alloy steel pipe joints to be done by full tig welding using IBR approved alloy steel filler wire by IBR qualified welders. Radiography of welded joints as per IBR requirement, hydraulic testing and getting approval from IBR authorities comes under the scope of the contractor.

REPLACING PROTECTIVE SHOES & CLAMPS. Work involves dismantling of existing clamps and stainless steel Protective shoes by grinding the weld materials, refixing the protective shoes by Stainless Steel welding after changing the tubes.

HIND ERECTORS