Exhaust fans and dampers shall not be required to be _______ on system actuation as the systems have been tested under both zero- and high-velocity flow conditions.

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Study for the NFPA 96/17A Class K Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Exhaust fans and dampers shall not be required to be _______ on system actuation as the systems have been tested under both zero- and high-velocity flow conditions.

Explanation:
Exhaust fans and dampers are allowed to remain in operation when the system actuates because they have been tested under both zero-velocity (no flow) and high-velocity flow conditions. Those tests show that continuing to run won’t compromise fire protection performance and can actually help with smoke removal and pressure control. So, it isn’t required to shut them down on actuation. Forcing a shutdown or other actions like immediate restart or deenergizing isn’t necessary given the validated performance, and simply venting isn’t the requirement being referenced.

Exhaust fans and dampers are allowed to remain in operation when the system actuates because they have been tested under both zero-velocity (no flow) and high-velocity flow conditions. Those tests show that continuing to run won’t compromise fire protection performance and can actually help with smoke removal and pressure control. So, it isn’t required to shut them down on actuation. Forcing a shutdown or other actions like immediate restart or deenergizing isn’t necessary given the validated performance, and simply venting isn’t the requirement being referenced.

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