CC Safety and OSHA Regulations 2 — Questions and Answers
Question 1: What is the OSHA requirement for a 'competent person' on a construction excavation?
- A person capable of identifying hazards and authorized to take corrective measures must be present at all excavations (Correct answer)
- A certified engineer must design all excavations
- Any licensed contractor qualifies automatically
- The property owner must be on-site
Correct answer: A person capable of identifying hazards and authorized to take corrective measures must be present at all excavations
OSHA 29 CFR 1926.650 requires a competent person to classify soil, inspect excavations daily, and address hazards before workers enter.
Question 2: What is a 'confined space' and when does OSHA require a permit to enter one?
- A space large enough for a worker but not designed for continuous occupancy — a permit is required when it has serious hazards (Correct answer)
- Any underground space regardless of hazards
- Any area under 10 square feet
- Any room without windows
Correct answer: A space large enough for a worker but not designed for continuous occupancy — a permit is required when it has serious hazards
A permit-required confined space has actual or potential hazards (atmospheric, engulfment, or entrapment) requiring permits, atmospheric testing, and rescue plans.
Question 3: Under OSHA 10/30-hour training, what does the '10' and '30' refer to?
- The number of training hours required — 10-hour for workers and 30-hour for supervisors (Correct answer)
- The number of safety topics covered
- The minimum age requirement
- The required years of experience
Correct answer: The number of training hours required — 10-hour for workers and 30-hour for supervisors
OSHA 10-hour training is designed for entry-level workers, while the 30-hour course is intended for supervisors and safety managers who need broader hazard knowledge.
Question 4: What is 'lockout/tagout' (LOTO) as required by OSHA?
- A procedure to de-energize and lock equipment before maintenance to prevent accidental startup (Correct answer)
- A method of securing the job site at night
- A procedure for tagging defective tools
- A method for locking in material prices
Correct answer: A procedure to de-energize and lock equipment before maintenance to prevent accidental startup
LOTO procedures prevent workers from being injured by the unexpected energization or startup of equipment during servicing.
Question 5: What does OSHA require regarding electrical safety for construction workers under 29 CFR 1926 Subpart K?
- Proper grounding, GFCIs on temporary power, and safe clearance distances from live lines (Correct answer)
- Rubber-soled shoes only
- No electrical work by contractors without an electrical contractor license
- A full electrical engineering review before any work
Correct answer: Proper grounding, GFCIs on temporary power, and safe clearance distances from live lines
OSHA requires ground fault circuit interrupter (GFCI) protection on temporary power, proper grounding, and maintaining safe approach distances to overhead power lines.
Question 6: What is the OSHA-required minimum width for scaffolding platforms used by construction workers?
- 18 inches minimum (Correct answer)
- 6 inches minimum
- 48 inches minimum
- 36 inches minimum
Correct answer: 18 inches minimum
OSHA's 29 CFR 1926.452 requires scaffold platforms to be at least 18 inches wide to provide sufficient working space and reduce fall risk.
CC Safety and OSHA Regulations 2
What is the OSHA requirement for a 'competent person' on a construction excavation?