MTPS I BM Unit IV Rotating parts AOH 2020 21 Removal and renewal of insulation in FG ducts Air Ducts and Air Pre Heaters

Amount

Cost of Insulation material for the flue gas duct for 1 sq mtr. LRB wool mattress size: 1.62m X 1.22 m X 60 mm thick confirming to IS 8183, 93. Density: 150 Kg/m3 both side 075 inch X 23 SWG G.I wire knitting with machine stitched and laid in HDPE.

Cost of GI sheet 0.63 mm thick with 120gsm/sq m of Galvanizing coating.

* Cost of 6 mm dia pin length 200mm (MS) 9 pins / m2 (0.4 Kgs/ m2), * MS outer retainer plate of size 70x70x2mm-18 nos/ m2 * GI casing support of size 65x2x650 mm - 4 nos/ m2, * Consumable like screw 36 nos / m2,binding wire, * Fabrication charges for 1Kg as per PWD schedule of rates 2020-2021=61.50/-

Charges for removing the existing deteriorated insulation, G.I. sheets, retainer plate, G,I. strips in the area of flue gas ducts up to ESP Plain portion hot primary & hot secondary air ducts and it is necessary to inspect pot holes, welding leakage’s in duct plates and providing new insulation wool mattress, G.I sheets. G.I strips and retainer plate including the transporting the new material from stores to site and devoluting the scraps from site to stores/outside of MTPS campus. (Material Portion Contractor scope)

Charges for removing the existing deteriorated insulation, G.I. sheets, retainer plate, G,I. strips in the area of Air pre heaters, Expansion joints at Hot primary and Hot secondary air ducts, Expansion joints at flue gas ducts up to chimney and it is necessary to inspect pot holes, welding leakage’s in duct plates & APH outer shell and providing new insulation wool mattress, G.I sheets after cutting & fabricating to the required contour shape, and providing G.I strips and retainer plate including the transporting of the new material from stores to site and devoluting the scraps from site to stores/outside of MTPS campus.

THIAGARAJAN ENGINEERING CONTRACTOR