TTPS ES EM I Attending minor repair works cleaning and painting of gas holders in Hydrogen plant I and II

1) Purging of Hydrogen gas in the gas holder by Nitrogen gas and air. 2) Draining of seal water completely and pumped to auxiliary cooling water pump house. 3) Opening of man hole of the inner tank. 4) Closing of man hole of the inner tank. 5) Filling of seal water. 6) Purging of air by Nitrogen and Hydrogen.

Labour charges for transporting of scaffolding pipes from Switchyard to Hydrogen Plant and providing necessary scaffolding arrangements for gas holder painting works for a height of 5 metres and dismantling of the scaffolding pipes after completion of works and transporting the pipes back to Switchyard I.

Labour charges for cleaning of wire rope applying new grease and checking the free movement of the inner tank.

Labour charges for cleaning and clearing of the muddy sediments in the bottom of the gas holder.

Labour charges for 1) Lifting the inner tank to the maximum height above the outer tank. 2) Checking of all welding joints and rewelding, if necessary 3) Checking the alignment of inner tank guide tube with centre support 4) Renewal of worn-out bolt and Nuts.

Labour charges for 1 coat of epoxy primer painting the inside of outer tank and inside and outside of inner tank & pipelines.

Labour charges for 2 coats of epoxy painting the inside of outer tank and inside and outside of inner tank & pipelines.

Labour charges for 2 coats of aluminium painting the outside area of outer tank, ladder, footing surface provided on the top of the gas holder & supporting channel of hanging counter weight.

Labour charges for cutting the corroded cooling water outlet pipe line and platform above the ladder of the outer tank, welding with the new pipe line of 70mm dia. and grill platform which includes cutting M.S. Structurals for the required size.

D.R.ELECTRICAL WORKS