STSC Fire Prevention and Protection in Construction 5

Question 1

A fire breaks out in a pile of oily rags stored in a metal container with a lid on a construction site. This is an example of what type of fire cause?

Accepted Answer

Spontaneous combustion

Answer

Oily rags generate heat through oxidation, and when confined, the heat builds until spontaneous ignition occurs.

Question 2

When installing a temporary fire suppression system in a high-rise construction project, which standard primarily governs sprinkler system design and installation?

Accepted Answer

NFPA 13

Answer

NFPA 13 is the standard for the installation of sprinkler systems, including temporary systems on construction sites.

Question 3

A construction supervisor notices that a fire extinguisher inspection tag shows the last monthly inspection was 45 days ago. The correct action is to:

Accepted Answer

Remove the extinguisher from service and have it inspected immediately

Answer

An extinguisher that has not received its required monthly inspection must be removed from service and inspected before being returned to duty.

Question 4

Which type of fire extinguisher is PROHIBITED for use on electrical fires (Class C) due to the risk of electrical conductivity?

Accepted Answer

Water (stored pressure)

Answer

Water is electrically conductive and can cause electrocution if used on energized electrical equipment fires.

Question 5

Under the hierarchy of fire prevention controls, which measure is considered the most effective for reducing fire risk on a construction site?

Accepted Answer

Eliminating ignition sources and combustible materials from the work area

Answer

Elimination — removing the hazard entirely — is the highest-order control and most effective at preventing fires.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Fire Prevention and Protection in Construction 5