EMPCO Public Safety Standards 3

Question 1

Which class of fire involves energized electrical equipment?

Accepted Answer

Class C

Answer

Class C fires involve energized electrical equipment; water-based extinguishers must never be used because of electrocution risk.

Question 2

A confined space that contains a hazardous atmosphere or engulfment hazard is classified under OSHA as a:

Accepted Answer

Permit-required confined space

Answer

OSHA 29 CFR 1910.146 defines a permit-required confined space as one with serious safety or health hazards requiring a written entry permit.

Question 3

During a mass-casualty incident, the START triage system tags a non-breathing victim as which color after attempting to open the airway?

Accepted Answer

Black

Answer

In START triage, a victim who does not breathe even after repositioning the airway is tagged black (expectant/deceased).

Question 4

What minimum personal protective equipment (PPE) level is required when the specific chemical hazard is unknown and the highest level of respiratory and skin protection is needed?

Accepted Answer

Level A

Answer

Level A PPE—fully encapsulating suit with SCBA—is worn when the hazard is unknown or when vapors, gases, or particulates may damage skin or be absorbed.

Question 5

Under OSHA's Lockout/Tagout standard (29 CFR 1910.147), after applying lockout devices, what is the required verification step?

Accepted Answer

Test the equipment to verify zero energy state

Answer

Workers must attempt to start or activate the equipment to verify that all energy sources are fully isolated before beginning work.

(EMPCO) Employment Medical Program Company Practice Test

(EMPCO) Employment Medical Program Company Practice Test

EMPCO Public Safety Standards 3