OPERATING PROCEDURE FOR SANITATION OF DM WATER PLANT

1.0 PURPOSE
This SOP provides detailed instructions regarding Sanitation / Cleaning of DM Water Plant.
2.0 SCOPE
As per the schedule the procedure has to be followed
- Daily Cleaning of DM Water plant columns / pipes is done from outside with damp cloth.
- The platform is cleaned using soap solution and then disinfectant solution.
- Charcoal filter is replaced every after one year.
- Sand filter anion, cation & mixed bed resins are cleaned and washed every after 3 months.
3.0 RESPONSIBILITY
Plant operator performs the procedure under the supervision of Production Officer / Production Executive. Assistant Production Manager / Production Manager is responsible to ensure that the process is carried out correctly.
4.0 MATERIALS AND EQUIPMENTS
Commercial Grade HCL, NaOH, Teepol, Scrubber.
5.0 PROCEDURE
5.1 Preparations And Preliminary Steps
Prepare 10 % HCL and 10 % NaOH solutions in DM Water.
5.2 Precautions And Safety Considerations
Use safety rubber hand gloves while preparing acid / alkali solutions and during sanitation process.
5.3 Chronological Activity Sequence
( Replace the charcoal filter every after one year ).
a) Remove the charcoal from the vessel and replace it with new charcoal. Fit all the pipes and nuts as per case.
b) Flush the column with water. Give backwash for 2 hrs. till wash water is free from black particles.
c) Remove the anion exchange resins and soak in 10 % NaOH solution for 12 hrs. Clean the resins by hand scrubbing (using rubber hand gloves) and flush with DM Water. Repack in the column. Clean the column from inside (before repackaging with resins) with 0.1 % teepol solution and scrubber, rinse it.
d) Remove the cation exchange reins and soak in 10 % HCL solution for 12 hrs. In the similar way, clean the vessel from inside. Repack the resins.
e) Separate the resins from mixed bed columns and clean them respectively with acid / alkali solution. Clean the column from inside clean the sand with scrubbing in 0.1 % teepol solution and rinse with DM Water clean the vessel.
5.4 POST OPERATIONAL ACTIVITY
Flush the DM Water plant for 2 hrs. with water including backwashes also to sand filter, charcoal filter, mixed bed.
6.0 REPORTING
Record the details in the register. Report to APM / Production Manager about the process.
7.0 REVIEW
After two years or when procedure is changed.