Fire Protection & Life Safety Systems Flashcards

According to NFPA 72, how often must a building's smoke detectors be tested in a commercial occupancy?

Answer: Annually

NFPA 72 requires that smoke detectors in commercial occupancies be functionally tested at least annually.

Which type of smoke detector is most suitable for detecting slow, smoldering fires?

Answer: Photoelectric detector

Photoelectric detectors use a light beam and sensor to detect the larger particles produced by slow, smoldering fires more effectively than ionization types.

What is the primary purpose of an emergency lighting system in a building?

Answer: To ensure illumination of egress paths during power failure

Emergency lighting systems are designed to automatically activate and illuminate means of egress when normal power fails, ensuring occupants can safely evacuate.

According to the IBC, what fire-resistance rating is required for a fire door in a 2-hour rated fire barrier?

Answer: 90 minutes

Fire doors in 2-hour rated fire barriers must have a minimum 90-minute fire-resistance rating per the IBC.

What does the term 'occupant load' refer to in building inspection and code compliance?

Answer: The number of persons for which a space is designed

Occupant load is the number of persons for which egress, fire protection, and other life safety features of a building or space are designed.

A building inspector observes that a self-closing device on a fire door is missing. What is the most significant code concern?

Answer: The fire-rated assembly integrity may be compromised during a fire

Self-closing devices ensure fire doors automatically close and latch during a fire, maintaining the integrity of the fire-rated barrier and preventing fire spread.

Under the IBC, what is the maximum floor area per sprinkler head allowed in a light hazard occupancy?

Answer: 225 square feet

NFPA 13 and the IBC allow a maximum coverage area of 225 square feet per sprinkler head in light hazard occupancies.