Pass Using ITFAS-Level-1 Exam Dumps

Private mode signaling is used in locations not open to the public (e.g., hospitals, certain office buildings). The audibility requirement for private mode differs from public mode.

NFPA 72 (2022), Section 18.4.5.3:

"For private mode audible appliances, the sound level shall be at least 10 dBA above the averageambient sound level..."

This ensures the signal is heard clearly in the intended space without exceeding what’s necessary.

Correct answer: C. 10 dBA above ambient

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If smoke detectors are installed during construction, they are likely exposed to dust or debris. NFPA 72 requires that these becleaned and tested for sensitivitybeforefinal commissioningof the system.

NFPA 72 (2022), Section 17.7.1.11:

“Where detectors are used for protection during construction, they shall be cleaned or replaced prior to final system commissioning.”

This ensures proper performance and prevents false alarms.

Correct answer: B. Final commissioning

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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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Elevator recall typically generates analarm signal, but under specific circumstances, theAHJ may approve the use of a supervisory signalinstead.

NFPA 72 (2022), Section 21.3.3.3 (Exception):

“Where permitted by the AHJ, activation of elevator recall initiating devices shall be permitted to result in a supervisory signal.”

This allows flexibilitywith AHJ approval, not at the discretion of designers or owners.

Correct answer: A. Where approved by the authority having jurisdiction

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