CHST CHST - Construction Health and Safety Technician Emergency and Fire Preparedness Questions and Answers 3

Question 1

According to NFPA 10, how far must a portable fire extinguisher be located from a Class B hazard in a construction setting?

Accepted Answer

50 feet

Answer

NFPA 10 requires Class B fire extinguishers to be placed no more than 50 feet from the hazard.

Question 2

During a construction site emergency evacuation, who is typically responsible for accounting for all workers at the assembly point?

Accepted Answer

The designated crew supervisor or foreman

Answer

Crew supervisors or foremen are typically assigned headcount accountability at assembly areas during evacuations.

Question 3

A 'fire watch' on a construction site is required to remain on duty for how long after hot work operations cease, per OSHA guidelines?

Accepted Answer

30 minutes

Answer

OSHA requires a fire watch to be maintained for at least 30 minutes after hot work is completed to detect smoldering fires.

Question 4

Which class of fire extinguisher is specifically designed to fight fires involving energized electrical equipment on a construction site?

Accepted Answer

Class C

Answer

Class C extinguishers use non-conductive agents and are rated for energized electrical equipment fires.

Question 5

What is the primary purpose of a pre-incident plan (pre-fire plan) developed for a construction site?

Accepted Answer

To provide responding emergency services with site-specific information

Answer

Pre-incident plans give responding fire departments critical site layout, hazard, and access information before an emergency occurs.

CHST - Construction Health and Safety Technician Practice Test