When a reverse-osmosis freshwater generator is shutdown, what must be accomplished?

Correct Answer: Option A — The unit must be flushed with freshwater and treated with an anti-bacterial growth inhibitor.

Flushing with freshwater removes concentrated brine and contaminants, while anti-bacterial inhibitors prevent biofouling during idle periods. This dual-action procedure is essential for preserving membrane life and preventing microbial growth, which can permanently degrade the semi-permeable structure of the elements during extended periods of inactivity in marine freshwater generation systems.