Name of Work: Inspection, cleaning and repair of ADT in DCDA Acid Plant during ATA 2026.
Sl. No.
Item Description
1
Inspection, cleaning and repair of ADT in DCDA Acid Plant during ATA 2026.
2
Opening and closing back the manhole dummies of ADT in DCDA Acid Plant. Temporary closing and opening shall be done if required before the final boxing up. Unit rate quoted shall be the total cost for both opening and closing back.
3
ADT leaky pipes flanged gasket renewal as well as pipeline repair/welding works.
4
Replacing/repairing the defective / leaky acid distribution header pipes, branch pipes, bend pipes etc. of ADT in DCDA Acid Plant.
5
Taking out the damaged spray nozzles of ADT in DCDA acid plant, wash well to clear the chocking, replace the damaged spray nozzles, and fix back or replace the nozzles with new one taken from stores.
6
Opening the top manhole and taking out the demister pad of ADT and re-fixing / renewing after washing and repairing in DCDA Acid Plant.The contractor shall do any repair on the mounting frame.
7
ADT Cast Iron Channel repair/patch works in DCDA Acid Plant.
8
Discharging, washing and recharging of packings from ADT in DCDA Acid Plant including sludge removal from IAT and ADT and pump tanks. Sludge should be neutralised with lime. After discharging packings from tower,distribution troughs,acid pipe surface,tower inside to be cleaned thoroughly. Clearing choked distribution pipes and locate severely choked distribution pipes,if any, for doing renewal works.
9
Patching/repairing of air inlet duct & nozzle of ADT in DCDA Acid Plant.Size - 6mm/8mm Material -MS/CS
10
Patching/repairing of dry air outlet duct of ADT in DCDA Acid Plant.Size - 6mm/8mm Material -MS/CSScaffolding required to exceute this work shall be under the scope of the contractor.
11
Dismantling, shifting to ground level for chocking clearing, cleaning and fixing back of Pressure drop lines, duct drain lines etc. of ADT with new gaskets during ATA. (Rate shall be quoted per INM)Line size : Upto 50 NB
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