OPERATING PROCEDURE FOR PASSIVATION OF DM WATER PIPE LINE

1.0 OBJECTIVE
To provide standard operating procedure for passivation of DM Water Pipe Line
2.0 SCOPE
Production Department.
3.0 AREA OF OPERATION
Engineering Dept. and Washing & Sterilisation Area.
4.0 RESPONSIBILITY
Engineering Dept. operator
5.0 ACCOUNTABILITY
Production Executive.
6.0 PROCEDURE
6.1 Isolate the DM Water transfer pump from DM Water storage tank.
6.2 Drain the DM Water from the pipe line by operating valves.
6.3 Prepare 40 Lit of 5% Nitric Acid solution (for this add 2 Lit. of Nitric Acid Commercial to the 35 Lit. of DM Water & dilute to 40 LIt.) in plastic drum.
6.4 Isolate Germicial UV Lamp from the DM Water supply line.
6.5 Connect the DM Water transfer pump to the contains of step 6.3
6.6 Ensure that the filter element from on line SS Filter housing & replace the filter housing.
6.7 Remove the filter element from on line SS Filter housing & replace the filter housing.
6.8 Switch ON the DM Water transfer pump.
6.9 Open the DM Water outlet valves one by one and close it when solution starts coming out.
6.10 Switch OFF the DM Water transfer pump & hold the solution for one hour in the Pipe Line.
6.11 Drain the solution from pipe line.
6.12 Flush the DM Water line with DM Water till the pH of feed water & outlet water from each outlet is same.
7.0 REVIEW DATE
After 2 years or when procedure is changed.