C2 Safety and Compliance 3 — Questions and Answers
Question 1: Which of the following best describes the hierarchy of controls used in hazard mitigation?
- Elimination, Substitution, Engineering Controls, Administrative Controls, PPE (Correct answer)
- PPE, Administrative Controls, Engineering Controls, Substitution, Elimination
- Training, PPE, Warnings, Substitution, Engineering Controls
- Isolation, Ventilation, PPE, Training, Monitoring
Correct answer: Elimination, Substitution, Engineering Controls, Administrative Controls, PPE
The hierarchy of controls ranks hazard reduction methods from most to least effective: Elimination, Substitution, Engineering Controls, Administrative Controls, and PPE.
Question 2: Under DOT regulations, a 'Hazardous Material' placard is required when a shipment exceeds what threshold weight for most hazard classes?
- 250 lbs
- 1,001 lbs (Correct answer)
- 500 lbs
- 2,000 lbs
Correct answer: 1,001 lbs
DOT regulations generally require hazmat placards when a shipment contains more than 1,001 lbs (454 kg) of a hazardous material in a single class.
Question 3: What does the acronym 'IDLH' stand for in occupational safety contexts?
- Immediate Danger to Life and Health (Correct answer)
- Identified Dose Level for Hazards
- Industrial Default Limit for Hazardous substances
- Integrated Daily Limit for Harmful chemicals
Correct answer: Immediate Danger to Life and Health
IDLH stands for Immediately Dangerous to Life or Health, representing the maximum concentration from which a worker could escape without irreversible effects.
Question 4: A facility stores 15,000 pounds of a regulated substance above its threshold planning quantity. Under EPCRA, this facility must notify which entity?
- The local fire department only
- The State Emergency Response Commission (SERC) and Local Emergency Planning Committee (LEPC) (Correct answer)
- The EPA regional office exclusively
- The facility's insurance carrier
Correct answer: The State Emergency Response Commission (SERC) and Local Emergency Planning Committee (LEPC)
EPCRA Section 302 requires facilities with Extremely Hazardous Substances above threshold quantities to notify both the SERC and LEPC.
Question 5: Which color on a NFPA 704 diamond indicates health hazard information?
- Red (top)
- Yellow (right)
- Blue (left) (Correct answer)
- White (bottom)
Correct answer: Blue (left)
On the NFPA 704 hazard diamond, the blue (left) quadrant indicates the health hazard rating on a scale of 0 to 4.
Question 6: A confined space is classified as 'permit-required' when it:
- Is large enough for a worker to enter and has a restricted entry point
- Contains or has the potential to contain a serious safety or health hazard (Correct answer)
- Is located underground or below grade level
- Has been previously identified as dangerous by OSHA inspection
Correct answer: Contains or has the potential to contain a serious safety or health hazard
A permit-required confined space is one that has or could have a serious hazard, such as a hazardous atmosphere, engulfment risk, or internal configuration danger.
Question 7: Under the Clean Air Act, facilities that emit regulated pollutants above major source thresholds must obtain which type of operating permit?
- National Pollution Discharge Elimination System (NPDES) permit
- Title V Operating Permit (Correct answer)
- Tier II Emergency and Hazardous Chemical Inventory permit
- Stormwater Pollution Prevention Plan (SWPPP) permit
Correct answer: Title V Operating Permit
Title V of the Clean Air Act requires major sources of air pollution to obtain a comprehensive operating permit that consolidates all air quality requirements.
C2 Safety and Compliance 3
Which of the following best describes the hierarchy of controls used in hazard mitigation?