CRC Safety Regulations & OSHA Compliance 3 — Questions and Answers
Question 1: Under OSHA's Lockout/Tagout (LOTO) standard, who is responsible for removing a lockout device from energy-isolating equipment?
- Only the authorized employee who applied it (Correct answer)
- Any supervisor on site
- The safety officer or site manager
- Any worker trained in LOTO procedures
Correct answer: Only the authorized employee who applied it
OSHA 29 CFR 1910.147 requires that only the authorized employee who applied a lockout device may remove it, ensuring accountability and preventing premature re-energization.
Question 2: What does OSHA require before a worker enters a confined space classified as 'permit-required'?
- A written permit specifying hazards, measures taken, and authorized entrants (Correct answer)
- Only verbal authorization from the supervisor
- A signed waiver acknowledging the risks
- A minimum 30-minute ventilation period before entry
Correct answer: A written permit specifying hazards, measures taken, and authorized entrants
OSHA 29 CFR 1910.146 mandates a written entry permit that identifies hazards, lists control measures, names authorized entrants and attendants, and specifies rescue procedures.
Question 3: A residential contractor's worker is using a powder-actuated tool. What training does OSHA require before the worker can operate it?
- The worker must be trained and certified by the tool manufacturer or their designee (Correct answer)
- A 15-minute safety briefing from the foreman
- OSHA 10-hour card plus supervisor sign-off
- No special training; standard PPE rules apply
Correct answer: The worker must be trained and certified by the tool manufacturer or their designee
OSHA 29 CFR 1926.302 requires powder-actuated tool operators to be specifically trained and certified by the tool manufacturer or their authorized designee.
Question 4: What is the maximum allowable voltage for using an assured equipment grounding conductor program (AEGCP) instead of GFCI protection on construction sites?
- AEGCP is an alternative to GFCI for any voltage; both are accepted options (Correct answer)
- Only circuits below 120 volts qualify for AEGCP
- AEGCP applies only to 240-volt circuits
- AEGCP is not recognized by OSHA as an alternative to GFCI
Correct answer: AEGCP is an alternative to GFCI for any voltage; both are accepted options
OSHA 29 CFR 1926.404 allows either GFCI protection or an AEGCP as alternative methods of protecting workers from electrical shock on construction sites.
Question 5: How often must portable ladders on construction sites be inspected, according to OSHA?
- Before each day's use (Correct answer)
- Weekly by a competent person
- Monthly by the safety officer
- Only when damage is visually apparent
Correct answer: Before each day's use
OSHA 29 CFR 1926.1053 requires portable ladders to be inspected before each day's use and after any incident that could affect their safe use.
Question 6: Under OSHA's silica standard for construction (29 CFR 1926.1153), what is the permissible exposure limit (PEL) for respirable crystalline silica?
- 50 µg/m³ as an 8-hour TWA (Correct answer)
- 100 µg/m³ as an 8-hour TWA
- 25 µg/m³ as an 8-hour TWA
- 250 µg/m³ as an 8-hour TWA
Correct answer: 50 µg/m³ as an 8-hour TWA
OSHA's respirable crystalline silica standard sets the PEL at 50 µg/m³ calculated as an 8-hour time-weighted average for construction operations.
Question 7: When a residential contractor uses a mobile crane, what OSHA document must the crane operator possess?
- A certification from an accredited crane operator testing organization (NCCCO or equivalent) (Correct answer)
- Any current forklift operator certificate
- An OSHA 30-hour card with crane endorsement
- A state driver's license with commercial vehicle endorsement
Correct answer: A certification from an accredited crane operator testing organization (NCCCO or equivalent)
OSHA 29 CFR 1926.1427 requires crane operators to be certified by an accredited testing organization such as the National Commission for the Certification of Crane Operators (NCCCO).
CRC Safety Regulations & OSHA Compliance 3
Under OSHA's Lockout/Tagout (LOTO) standard, who is responsible for removing a lockout device from energy-isolating equipment?