NABCEP Workplace Safety and OSHA 3 — Questions and Answers
Question 1: Under OSHA 29 CFR 1926.503, which employees must receive fall protection training?
- Only employees working at heights above 10 feet
- All construction employees regardless of height
- Employees who may be exposed to fall hazards (Correct answer)
- Only supervisors and foremen
Correct answer: Employees who may be exposed to fall hazards
OSHA 29 CFR 1926.503 requires fall protection training for each employee who might be exposed to fall hazards, not just those above a specific height.
Question 2: A solar worker develops skin irritation after handling fiberglass insulation without gloves. Under OSHA's HazCom standard, the employer's primary obligation is to:
- File an OSHA 300 log entry immediately
- Ensure the worker has access to the SDS and appropriate PPE (Correct answer)
- Report the incident to OSHA within 24 hours
- Reassign the worker to non-chemical tasks
Correct answer: Ensure the worker has access to the SDS and appropriate PPE
HazCom requires employers to provide employees access to SDSs and appropriate PPE for chemicals they work with.
Question 3: When installing rooftop PV panels, a safety monitor system (without physical fall protection) may only be used on roofs that are:
- Any low-slope roof under 50 feet wide
- Low-slope surfaces with a width of 50 feet or less (Correct answer)
- Any roof surface with less than a 4:12 pitch
- Only flat roofs accessible by stairs
Correct answer: Low-slope surfaces with a width of 50 feet or less
OSHA allows a safety monitoring system as sole fall protection only on low-slope roofs 50 feet or less in width.
Question 4: Which OSHA standard specifically governs electrical safety-related work practices in general industry (not construction)?
- 29 CFR 1910.147
- 29 CFR 1910.333 (Correct answer)
- 29 CFR 1926.416
- 29 CFR 1910.269
Correct answer: 29 CFR 1910.333
29 CFR 1910.333 covers electrical safety-related work practices for general industry employees working on or near energized electrical equipment.
Question 5: What is the maximum safe approach distance for an unqualified worker near an unguarded 480V energized conductor?
- Any distance with rubber gloves
- They must stay outside the limited approach boundary
- 3 feet 6 inches (the limited approach boundary for <1kV) (Correct answer)
- Must stay behind a 6-foot barrier
Correct answer: 3 feet 6 inches (the limited approach boundary for <1kV)
NFPA 70E specifies that unqualified workers must stay outside the limited approach boundary, which is 3 feet 6 inches for voltages under 1,000V.
Question 6: An OSHA Form 300A (Summary of Work-Related Injuries and Illnesses) must be posted in the workplace during which period each year?
- January 1 through March 31
- February 1 through April 30 (Correct answer)
- March 1 through May 31
- The entire calendar year
Correct answer: February 1 through April 30
OSHA requires the Form 300A summary to be posted in a visible location from February 1 through April 30 each year.
Question 7: During a confined space entry on a ground-mount solar project (e.g., underground conduit vault), OSHA requires the employer to classify it as a permit-required confined space if it:
- Is larger than 4 feet in diameter
- Has a hazardous atmosphere or engulfment hazard (Correct answer)
- Requires a ladder to enter
- Has not been previously inspected
Correct answer: Has a hazardous atmosphere or engulfment hazard
A space is permit-required if it has or has the potential for a hazardous atmosphere, engulfment hazard, internal configuration hazard, or any other recognized serious safety hazard.
NABCEP Workplace Safety and OSHA 3
Under OSHA 29 CFR 1926.503, which employees must receive fall protection training?