CHST Emergency and Fire Preparedness 5

Question 1

A construction worker notices smoke coming from electrical conduit inside a wall cavity. Which type of fire extinguisher is appropriate?

Accepted Answer

Class C-rated extinguisher

Answer

Electrical fires require a Class C-rated extinguisher because water-based agents conduct electricity and could endanger the user.

Question 2

What is the minimum frequency required for inspecting portable fire extinguishers on a construction site under OSHA standards?

Accepted Answer

Monthly

Answer

OSHA requires monthly visual inspections of portable fire extinguishers to ensure they are in place, fully charged, and operational.

Question 3

During a hazardous materials spill emergency on a construction site, which document should first-responders reference to identify safe handling procedures?

Accepted Answer

The Safety Data Sheet (SDS) for the material

Answer

The Safety Data Sheet (SDS) provides critical information on hazards, PPE requirements, and emergency response procedures for a specific chemical.

Question 4

Which scenario requires a site to implement an Incident Command System (ICS) structure during an emergency?

Accepted Answer

A multi-agency response to a structural collapse with multiple victims

Answer

ICS is designed for complex, multi-agency emergencies such as structural collapses where coordinated command and communication are critical.

Question 5

What is the correct sequence for using a portable fire extinguisher, remembered by the acronym PASS?

Accepted Answer

Pull, Aim, Squeeze, Sweep

Answer

PASS stands for Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep side to side across the base of the flames.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST Emergency and Fire Preparedness 5