PC Safety Procedures & PPE 2

Question 1

When working in a confined space with potential gas buildup, which atmospheric condition requires immediate evacuation?

Accepted Answer

Oxygen level below 19.5%

Answer

OSHA defines oxygen-deficient atmosphere as below 19.5%, requiring immediate evacuation and supplied-air respirators.

Question 2

Which type of respirator is required when soldering copper pipes in an enclosed space with inadequate ventilation?

Accepted Answer

Half-face air-purifying respirator with organic vapor cartridge

Answer

Soldering flux fumes contain harmful organic vapors that require an air-purifying respirator with organic vapor cartridges.

Question 3

A plumber is about to cut into a wall in a pre-1978 building. What hazard must be assessed first?

Accepted Answer

Asbestos or lead paint

Answer

Buildings constructed before 1978 may contain lead-based paint and asbestos insulation, requiring assessment before any disturbance.

Question 4

What is the correct procedure when a plumber's clothing catches fire while using a torch?

Accepted Answer

Stop, drop, and roll

Answer

Stop, drop, and roll smothers flames by cutting off oxygen; running fans the fire and spreads it.

Question 5

Which safety device must be used when soldering or brazing near combustible materials like wood framing?

Accepted Answer

Fire blanket or heat shield

Answer

A fire blanket or heat shield protects combustible framing from torch heat and prevents structure fires.

(PC) Plumber Certification Practice Test