How is sensitivity of direct integrity testing determined?
The rule specifies that the sensitivity of a membrane system is site-specific. This is because many factors such as the module and the system configurations, sizes, air-tightness of the piping, operating conditions, the parameter settings for integrity testing, and temperature can have an effect on log reduction values. To determine the sensitivity of a membrane system, the log reduction value of the system has to be related to parameter(s) of the direct integrity testing (e.g., pressure decay rate in pressure-hold test) through hydraulic modeling and/or experimental validation. This FAQ supplied by: Pall Corp.
