AIT Safety Practices 4 — Questions and Answers
Question 1: What is the correct sequence when using a fire extinguisher, remembered by the acronym PASS?
- Pull, Aim, Squeeze, Sweep (Correct answer)
- Push, Activate, Spray, Stand back
- Position, Aim, Squeeze, Spread
- Pull, Advance, Spray, Stop
Correct answer: Pull, Aim, Squeeze, Sweep
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.
Question 2: Which of the following is a leading cause of workplace fatalities in the construction industry, according to OSHA's 'Fatal Four'?
- Chemical exposure
- Falls from elevation (Correct answer)
- Hearing loss
- Repetitive strain injuries
Correct answer: Falls from elevation
OSHA's 'Fatal Four' in construction are falls, struck-by, caught-in/between, and electrocution; falls are the leading cause, accounting for the most deaths.
Question 3: What is the maximum allowable noise exposure at 90 dBA without hearing protection, according to OSHA?
- 2 hours
- 4 hours
- 8 hours (Correct answer)
- 12 hours
Correct answer: 8 hours
OSHA's permissible noise exposure limit is 90 dBA for an 8-hour time-weighted average (TWA); above this, engineering controls or hearing protection are required.
Question 4: A worker is struck in the eye by a small metal chip. Which first aid action is most appropriate?
- Rub the eye to dislodge the chip
- Flush the eye with clean water for 15–20 minutes and seek medical attention (Correct answer)
- Apply a warm compress and wait to see if it clears
- Remove the chip with tweezers
Correct answer: Flush the eye with clean water for 15–20 minutes and seek medical attention
Eye injuries require immediate irrigation with clean water for at least 15 minutes to flush out particles, followed by medical evaluation to prevent serious damage.
Question 5: What does 'Hierarchy of Controls' prioritize as the most effective way to reduce workplace hazards?
- Administrative controls (rules and procedures)
- Personal protective equipment (PPE)
- Elimination of the hazard (Correct answer)
- Engineering controls (physical barriers)
Correct answer: Elimination of the hazard
The Hierarchy of Controls ranks elimination as the most effective solution because it physically removes the hazard, while PPE is the least effective as a last resort.
Question 6: When should an apprentice inspect their personal protective equipment (PPE)?
- Only when the PPE visibly appears damaged
- Before each use, and replace any damaged or expired equipment (Correct answer)
- At the beginning of each week
- After reporting a near-miss incident
Correct answer: Before each use, and replace any damaged or expired equipment
PPE should be inspected before every use to ensure it is in good condition and will provide the protection it is designed for.
Question 7: What is the minimum safe approach distance for unqualified workers near overhead power lines rated at 50 kV or below?
- 3 feet
- 10 feet (Correct answer)
- 25 feet
- 50 feet
Correct answer: 10 feet
OSHA 1926.416 requires unqualified workers to maintain a minimum of 10 feet from energized overhead power lines rated up to 50 kV.
AIT Safety Practices 4
What is the correct sequence when using a fire extinguisher, remembered by the acronym PASS?