FST Fire Detection & Suppression Systems 5

Question 1

In a fire alarm system, what does a 'supervisory signal' indicate?

Accepted Answer

An off-normal condition in a fire protection system requiring attention

Answer

A supervisory signal indicates an off-normal condition in a fire protection system (such as a closed sprinkler valve) that requires investigation but is not necessarily a fire.

Question 2

What is the minimum ceiling height at which a standard upright or pendent sprinkler may require a longer deflector-to-ceiling distance adjustment?

Accepted Answer

Only when ceiling exceeds 20 feet

Answer

NFPA 13 requires additional sprinkler design consideration and adjustments for ceiling heights exceeding 20 feet due to fire plume dynamics at greater heights.

Question 3

A fire technician finds a sprinkler valve locked in the closed position. According to NFPA 25, this should be immediately reported as:

Accepted Answer

An impairment requiring proper impairment procedures

Answer

Any condition that leaves fire protection equipment out of service must be handled through formal impairment procedures, including notifying the AHJ and taking compensating measures.

Question 4

Which of the following is a PRIMARY advantage of an addressable fire alarm system over a conventional zoned system?

Accepted Answer

Each device has a unique address enabling pinpoint identification

Answer

Addressable systems assign a unique identifier to each device, allowing the FACP to identify the exact detector or device that activated rather than only the zone.

Question 5

The required sound pressure level for audible notification appliances in sleeping areas per NFPA 72 is:

Accepted Answer

75 dBA at the pillow level

Answer

NFPA 72 requires a minimum of 75 dBA measured at the pillow in sleeping areas to ensure occupants can be awakened by the alarm.

(FST) Fire Safety Technician Certification Practice Test

(FST) Fire Safety Technician Certification Practice Test

FST Fire Detection & Suppression Systems 5