ITFAS-Level-1 Exam Dumps : Inspection and Testing of Fire Alarm Systems Level I Exam

Emergency voice/alarm communication systems must continue functioning after a loss of primary power for aminimum of 24 hours in standby, followed by15 minutes of alarmoperation.

NFPA 72 (2022), Section 10.6.7.2.1.1 (Exception):

“…followed by 15 minutes of alarm for emergency voice/alarm communication systems.”

This ensures that occupants can still hear evacuation messages even during a power outage.

Correct answer: D. Minimum of 15 minutes

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NFPA 72 places amaximum allowable sound pressure levelto prevent hearing damage or discomfort in occupied areas.

NFPA 72 (2022), Section 18.4.1.5:

“The total sound pressure level produced by the fire alarm system, including ambient noise, shall not exceed 105 dBA at the minimum hearing distance from the audible appliance.”

This ensures alarm audibilitywithout causing harm.

Correct answer: B. 105 dBA

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Engine-driven generators used for emergency power arenot governed directly by NFPA 72. Instead, their installation and testing requirements are found in:

NFPA 110 – Standard for Emergency and Standby Power Systems

NFPA 110 (2022), Chapter 8details howengine-driven generatorsmust be tested, including runtime, load testing, and maintenance intervals.

NFPA 72 references NFPA 110whenever standby/emergency power is used for fire alarm systems.

Correct answer: D. NFPA 110