How can the frequency for direct integrity testing be determined?
Given the fact that current practices of direct integrity testing are not continuous and requires down time from production, the determination of testing frequency needs to balance both safeguarding public health and enhancing production. One good approach to determine the testing frequency is a risk-based approach. This approach relates the risk of membrane failure (both the probability of occurrence and consequence of the failure) to testing frequency. Historical record and membrane fatigue test can be used to generate the probability of occurrence of membrane failure. The consequence of the membrane failure can be evaluated through plant validation tests and hydraulic modeling. This FAQ supplied by: Pall Corp.
