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Integrating integrity checks into immersed UF operation
Plan direct tests, filtrate monitoring and isolation procedures for an immersed UF train.
HOSON WATER editorial ·
Agree what the integrity program must demonstrate
The owner and designer should define the target water quality, applicable regulatory requirements and the integrity test supported by the selected module and piping layout. Specify how an individual train can be tested and returned to duty. During a retrofit, review the availability of isolation and suitable pressure or vacuum connections before selecting the test method.
Pair test results with continuous observations
Direct tests evaluate the barrier at a point in time. Routine filtrate monitoring can show changes between tests and can trigger investigation. Specify which train each sensor represents, the sample lag and how staff distinguish maintenance or analyzer faults from water-quality events. Record test conditions and instrument status with results.
Prepare a clear response for suspect results
Decide who isolates the affected rack or train, where off-spec filtrate is sent and what confirms return to service. Keep event records with the module and instrument maintenance history. Confirm the response sequence in commissioning so an operator can apply it without relying on memory or a supplier visit.