DPSST Fire Safety 3

Question 1

Under NFPA 1, what is the required minimum aisle width in assembly occupancies for areas with more than 50 seats?

Accepted Answer

44 inches

Answer

NFPA 1 and Life Safety Code require a minimum 44-inch aisle width in assembly occupancies to ensure safe egress.

Question 2

What is the primary hazard associated with a backdraft explosion?

Accepted Answer

Sudden introduction of oxygen to a superheated oxygen-deficient fire environment

Answer

A backdraft occurs when oxygen is suddenly introduced into a smoldering, oxygen-deficient fire, causing an explosive ignition.

Question 3

In the Incident Command System (ICS), who is directly responsible for the safety of all personnel on the fireground?

Accepted Answer

Safety Officer

Answer

The Safety Officer has the authority to halt unsafe operations and is responsible for monitoring and ensuring personnel safety.

Question 4

A standpipe system classified as Class II is designed primarily for use by:

Accepted Answer

Trained building occupants using small hose stations

Answer

Class II standpipes provide 1½-inch hose stations for use by trained building occupants for initial attack before firefighters arrive.

Question 5

Which of the following best describes a 'two-in, two-out' rule under OSHA 29 CFR 1910.134?

Accepted Answer

Two firefighters enter and two remain outside for rescue if needed before an interior attack

Answer

The two-in, two-out rule requires that at least two firefighters remain outside in standby rescue mode whenever two or more enter an IDLH atmosphere.

(DPSST) Department of Public Safety Standards and Training Certified Practice Test