Repair and Replacement of Burst HDPE Distribution Pipeline from Thirumullaivoyal Sivan Koil OHT Tank in ward no 8 to areas under ward no 7,9,10 and 29.

Amount

Removing the burst P.V.C./ HDPE Pipes from the pipe line and removal of slushy soil and baling out water and replacing the pipe line with sound pipe including jointing and cost of refilling the pipe line with water for retesting the pipe line etc., complete (excluding cost of sound pipe and jointing materials and earth work) and as directed by the TWAD Board Officers 110 mm dia pipe

Removing the burst P.V.C./ HDPE Pipes from the pipe line and removal of slushy soil and baling out water and replacing the pipe line with sound pipe including jointing and cost of refilling the pipe line with water for retesting the pipe line etc., complete (excluding cost of sound pipe and jointing materials and earth work) and as directed by the TWAD Board Officers 180 mm dia pipe

Removing the burst P.V.C./ HDPE Pipes from the pipe line and removal of slushy soil and baling out water and replacing the pipe line with sound pipe including jointing and cost of refilling the pipe line with water for retesting the pipe line etc., complete (excluding cost of sound pipe and jointing materials and earth work) and as directed by the TWAD Board Officers 200 mm dia pipe

Supply & Delivery of following HDPE specials including all labour charges etc complete 100 mm dia gate valve

100 mm Saddle piece

Supply and delivery of Leak Arresting Flexible SS Clamps of Wrap Around Single Section type upto 500 mm diameter and Maxi Range double section type beyond 500 mm od of all rigid pipe sections. The Clamps made of stainless steel SS304 metallic body of 0.8 to 1.0mm maximum thickness pasted with Waffle gaskets of Natural / Nitrile/ EPDM grade (BS EN681-1) and fitted with self stabilizing Finger type clamps of 200 mm length SG grade malleable cast iron duly powder coated (BS 2789 grade 400/12) and connected through fasteners of EN8 material with Zinc Coating (BS 970). Suitable width of the clamps to be decided by the engineer incharge at site depending on the nature of pipe crack (400 mm width) 110 mm dia pipe

180 mm dia pipe

200 mm dia pipe

Jointing HDPE Pipes and Specials by butt fusion welding / electro fusion welding joints using fusion equipment as per ISO 21307-2011 and as per IS 7634 (part-2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as per directed by TWAD Board Officers. 110 mm dia pipe

180 mm dia pipe

200 mm dia pipe