Exhaust fans and dampers shall not be required to be _______ on system actuation, due to test conditions.

Exhaust fans and dampers shall not be required to be _______ on system actuation, due to test conditions.

• A. disabled
• B. isolated
• C. shut down
• D. vented

Answer: (C)

Exhaust fans and dampers are not required to shut down when the fire-extinguishing system actuates during test conditions. The idea is to keep the ventilation service active so the test can run under realistic operating conditions and the sequence of actuation isn’t distorted by forcing the fans to stop. Shutting down the exhaust would alter the test environment and could mask or complicate testing of the suppression system and airflow. Disabling, isolating, or venting the fans during actuation would imply functional changes not required by the test conditions, so they are not the correct choice.

Exhaust fans and dampers are not required to shut down when the fire-extinguishing system actuates during test conditions. The idea is to keep the ventilation service active so the test can run under realistic operating conditions and the sequence of actuation isn’t distorted by forcing the fans to stop. Shutting down the exhaust would alter the test environment and could mask or complicate testing of the suppression system and airflow. Disabling, isolating, or venting the fans during actuation would imply functional changes not required by the test conditions, so they are not the correct choice.