HWPM/PS(P)/XU-CC/2022

Amount

Chemical Cleaning of the Cooling Water Heat exchangers of Exchange Units

Cleaning (if required) & Shifting of empty carboys of 50 ltr. capacity to DM plant(MP),alkali filling and transportation to the heat Exchanger site.

Cooling Water Heat exchanger chemical cleaning, involving jobs like shifting of syntax tank of 2 m3 capacity & pump motor combination to the location, making all arrangements of temporary piping & hose connections and establishment of water circulation. Acid dosing with circulation, circulation of acid solution, after completion of circulation of acid solution, Draining & neutralization of the holdup with alkali, flushing of the exchanger with water and neutralizing residual acidity by circulating Sodium carbonate solution, draining the holdup, flushing of the exchanger with water and normalization of system by removing temporary connections, taking and sending samples to laboratory as and when required in round the clock shifts as per the instruction of the departmental supervisor.

Cooling Water Heat exchangers passivation, involving jobs like shifting of syntax tank of 2 m3 capacity & pump motor combination to the location(if not available at the location), making all arrangements of temporary piping & hose connections and establishment of water circulation. Sodium Hexa Meta phosphate & surfactant dosing with water circulation, circulation of solution, after completion of circulation of solution, draining the holdup, flushing of the exchanger with water and normalization of system by removing temporary connections and taking and sending samples to laboratory as and when required in round the clock shifts as per the instruction of the departmental supervisor.

M/s R R ENGINEERING WORKS

Sri Bhargavi Engineering Works