Certified Fire Protection Specialist (CFPS) — Question 19

There are two different ambient noise levels that are required to meet fire alarm audibility goals and system design. The first is the average sound pressure levels (SPL) during the time the area is occupied. The second is the maximum SPL that lasts a specific minimum duration of time (in seconds). Per NFPA 72, which of the following choices is the minimum duration required to meet the second ambient noise level?

Answer options

• A. 30 seconds
• B. 60 seconds
• C. 120 seconds
• D. 160 seconds

Correct answer: B

Explanation

According to NFPA 72, the minimum duration for the maximum sound pressure level (SPL) is specified to be 60 seconds to ensure that the fire alarm is audible. The other options, 30 seconds, 120 seconds, and 160 seconds, do not meet the NFPA requirement for the specified duration, making them incorrect.