CFI Life Safety & Emergency Systems 3

Question 1

According to NFPA 72, a single-station smoke alarm installed in a dwelling must sound at a minimum sound pressure level of how many decibels at 10 feet?

Accepted Answer

75 dB

Answer

NFPA 72 requires single-station smoke alarms to produce a minimum alarm sound of 75 dB measured at 10 feet from the device.

Question 2

A fire alarm control unit (FACU) that uses individual circuit monitoring for each device is classified as which type of system?

Accepted Answer

Addressable

Answer

An addressable fire alarm system identifies each device individually on the circuit, enabling the FACU to pinpoint the exact location of the alarm.

Question 3

What is the purpose of a pre-action sprinkler system in a data center or library with rare books?

Accepted Answer

To prevent accidental water discharge from a single failure

Answer

A pre-action system requires two independent triggers before water enters the piping, preventing accidental discharge that could damage sensitive contents.

Question 4

Under NFPA 25, wet pipe sprinkler systems must be inspected for main drain flow test results at what minimum frequency?

Accepted Answer

Annually

Answer

NFPA 25 requires the main drain test of a wet pipe sprinkler system to be conducted at least annually to verify adequate water supply.

Question 5

Which component of a fire alarm system is specifically designed to reduce nuisance alarms caused by cooking or steam in residential kitchens?

Accepted Answer

Heat detector

Answer

Heat detectors respond only to elevated temperature rather than combustion particles or steam, making them appropriate in kitchens to avoid nuisance alarms.

(CFI) Certified Fire Inspector Practice Test

(CFI) Certified Fire Inspector Practice Test

CFI Life Safety & Emergency Systems 3