STSC Fire Prevention and Protection in Construction 4

Question 1

Under OSHA 29 CFR 1926.150, what is the maximum travel distance from any point in a building to a fire extinguisher for a Class B hazard?

Accepted Answer

50 feet

Answer

OSHA requires fire extinguishers for Class B hazards to be located no more than 50 feet from the hazard.

Question 2

When welding near combustible materials on a construction site, the hot work permit system requires a fire watch to remain on duty for how long after welding operations cease?

Accepted Answer

30 minutes

Answer

OSHA and NFPA standards require a fire watch to continue for at least 30 minutes after hot work ends to detect smoldering fires.

Question 3

A construction site stores 75 gallons of flammable liquid in a storage room. According to OSHA, this room must have a fire-resistance rating of at least:

Accepted Answer

2 hours

Answer

OSHA 1926.152 requires flammable liquid storage rooms to have a minimum 2-hour fire-resistance rating when storing more than 60 gallons.

Question 4

Which suppression agent is most appropriate for a Class K fire involving cooking oils in a construction site temporary kitchen?

Accepted Answer

Wet chemical agent

Answer

Wet chemical agents are specifically designed for Class K fires involving high-temperature cooking oils and fats.

Question 5

During demolition of an existing structure, the supervisor discovers unknown pipe insulation that may be asbestos. What is the FIRST action regarding fire protection?

Accepted Answer

Stop work and assess whether the material could become friable from fire or cutting

Answer

Fire or cutting of asbestos-containing materials can release fibers; work must stop to evaluate and comply with NESHAP and OSHA asbestos standards before resuming.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Fire Prevention and Protection in Construction 4