PURPOSE:  To implement & lay down procedure for  cleaning & sanitization of pipes carrying  distilled water .

RESPONSIBILITY  :  Production Chemist

PROCEDURE:       

SCHEDULE FOR CLEANING    :  EVERY MONTH

1. The storage vessels / pipes are thoroughly cleaned with nylon scrubber form outside .
2. Prepare 3000 liters of 0.1 % w/v solution of Potassium permanganate and transfer it into the storage tank .
3. Open the respective  outlets of D.M water at different locations & let it flow for about 5 minutes .
4. Close these outlets and reopen them after 30 minutes .
5. Let all the peramanganate solution drain though these outlets till the storage tank gets emptied
6. Close the outlets
7. Rinse the storage tank with fresh D.M water till it is free from traces of Potassium Permanganate.

(Note : Even 1 ppm of Potassium  Permanganate imparts pinkish colour in water . )

8.Pass the D.M water in the storage tank through on line U.V disinfectant system & rinse the pipe line with it till it is free from trace of Potassium .

Send the sample to check for absence of traces of Potassium Permanganate and on the written approval from Q.C. water should released for use .

                         (Review date on or before 12 months from date of authorization)