CDS Safety Regulations & OSHA Compliance 2 — Questions and Answers
Question 1: Under OSHA 29 CFR 1926.850, what must be done before demolition work begins on any structure?
- Obtain a city demolition permit only
- Conduct an engineering survey of the structure (Correct answer)
- Notify adjacent property owners
- Install perimeter fencing
Correct answer: Conduct an engineering survey of the structure
OSHA 1926.850 requires a competent person to conduct an engineering survey of the structure before demolition begins to determine potential hazards.
Question 2: What is the maximum permissible noise exposure level for an 8-hour workday under OSHA standards?
- 85 dBA
- 90 dBA (Correct answer)
- 95 dBA
- 100 dBA
Correct answer: 90 dBA
OSHA's permissible exposure limit (PEL) for noise is 90 dBA for an 8-hour time-weighted average (TWA) per 29 CFR 1910.95.
Question 3: Which OSHA standard specifically covers hazardous waste operations including demolition sites with hazardous materials?
- 29 CFR 1926.62
- 29 CFR 1910.120 (Correct answer)
- 29 CFR 1926.1101
- 29 CFR 1910.1000
Correct answer: 29 CFR 1910.120
29 CFR 1910.120 (HAZWOPER) governs hazardous waste operations and emergency response, including demolition sites where hazardous materials are present.
Question 4: When must a demolition supervisor stop work and report to OSHA?
- When a worker refuses a task
- When a fatality or hospitalization of 3+ workers occurs (Correct answer)
- When equipment malfunctions
- When a subcontractor is behind schedule
Correct answer: When a fatality or hospitalization of 3+ workers occurs
OSHA requires employers to report fatalities within 8 hours and in-patient hospitalizations of 3 or more employees within 24 hours.
Question 5: Under OSHA 1926.502, what is the minimum height at which fall protection is required for construction and demolition workers?
- 4 feet
- 6 feet (Correct answer)
- 8 feet
- 10 feet
Correct answer: 6 feet
OSHA 1926.502 requires fall protection for construction and demolition workers at heights of 6 feet or more above a lower level.
Question 6: What action is required under OSHA before demolishing a building that may contain PCBs?
- File a notice with OSHA only
- Test, notify EPA, and follow TSCA disposal requirements (Correct answer)
- Seal the building and proceed with demolition
- Hire an industrial hygienist to observe
Correct answer: Test, notify EPA, and follow TSCA disposal requirements
PCBs are regulated under TSCA; before demolition, testing is required and EPA must be notified, with PCB-containing materials disposed of per 40 CFR 761.
Question 7: Which type of respirator is required for workers exposed to silica dust exceeding the OSHA action level during demolition?
- Surgical mask
- N95 filtering facepiece respirator
- Half-face elastomeric with P100 filters (Correct answer)
- Any NIOSH-approved respirator
Correct answer: Half-face elastomeric with P100 filters
For silica exposures above the action level, OSHA 1926.1153 requires at minimum a half-face elastomeric respirator with P100 filters when engineering controls are insufficient.
CDS Safety Regulations & OSHA Compliance 2
Under OSHA 29 CFR 1926.850, what must be done before demolition work begins on any structure?