Under which of the following conditions will the blowers of an inert gas generation system aboard a tanker remain operational?

Correct Answer: Option C — The tank atmosphere above 8% oxygen

The inert gas system is designed to maintain an oxygen-deficient atmosphere. If the oxygen level rises above 8%, the system is failing its primary safety function. However, the blowers must remain operational to continue purging and replacing the tank atmosphere until the oxygen level is successfully reduced below the limit.