Cleaning of UF membrane

1.0 OBJECTIVE
To lay down a procedure for cleaning of UF membrane.
2.0 SCOPE
This SOP is applicable to Formulations Units
2.1.0 AREAS
2.1.1 Purified water plant.
3.0 RESPONSIBILITY
Technical officer / Executive (production)
4.0 ACCOUNTABILITY
Manager production.
5.0 PROCEDURE
5.1 Precautions
5.2 Pre – Start up
5.3 Operation
5.1 Precautions
5.1.1 Be careful while handling the chemicals.
5.1.2 Wear gloves and nose mask before handling the chemicals.
5.2 Pre-Start up
5.2.1 Ensure the availability of D.M water.
5.2.2 Ensure the availability of all chemicals and accessories.
5.2.3 Ensure the availability of compressed air.
5.3 Operation
5.3.1 Ensure the pump P1 is in off position during cleaning.
5.3.2 Collect 600 lts (1250. Mm WC) of DM water in CIP tank.
5.3.3 Collect the valve V14, V17, V20, V21, V23, V27, V28, V31,V V52 & V67.
5.3.4 Open valve V15, V16, V18, V19 & V 29,
5.3.5 Desolve the 500 gms of NaoH (100%) in a measuring beaker.
5.3.6 Pour this solution into CIP tank through air vent.
5.3.7 Recirculate the solution through U.F module by starting the pump P1 stop the pump P1 after 30 min.
5.3.8 Open the valve V14 to drain the solution from CIP tank. Close valve V14 after ensuring that complete solution is drained.
5.3.9 Collect DM water in to CIP tank. Circulate the water by stating the pump P1, drain the water opening the valves V17, V22, V27, V28 & V67.
5.3.10 Continue circulation till the rinse water conductivity and pH matches with DM water specification . Stop the pump P1, after 30 min. Then close the valves V17, V22, V27, V28 & V67.
5.3.11 Collect 100 lts (1250 mm WC) in to CIP tank through air vent.
5.3.12 Pour the 400 ml Naocl 5% (Sodium hypochlorite) concentration solution in to CIP tank through air vent.
5.3.13 Circulate the solution through U.F module by starting the pump P1. Stop the pump P1 after 30 min.
5.3.14 Open valve V14 to drain the solution from CIP tank. Close the valve V14 after ensuring that complete solution is drained.
5.3.15 Collect the D.M water into CIP tank. Circulate the water by starting the pump P1. Drain the water by opening the valves V17, V22, V27, V28 & V67 continue circulation till the rinse water conductivity and pH matches with D.M water specification. Stop the pump P1 after 30 min. Then close the valves V17, V22, V27, V28 & V67.
5.3.16 Chemical cleaning is followed by hot water sanitzation according.
5.4 The cleaning of U.F membrane by chemical shall be done at every 6 months.

Note: Users of this document shell change the abbrevations and code used, according to the DQ of their equipment