CHST FREE CHST General Questions and Answers 5 — Questions and Answers
Question 1: What is the OSHA-required minimum safe distance from power lines for uninsulated overhead lines carrying up to 50 kV when using cranes or other equipment?
- 5 feet
- 10 feet (Correct answer)
- 15 feet
- 20 feet
Correct answer: 10 feet
OSHA requires a minimum clearance of 10 feet from uninsulated overhead power lines carrying up to 50 kV under 29 CFR 1926.1408 for crane and derrick operations.
Question 2: Which document serves as the primary written safety plan that outlines a contractor's overall approach to managing safety on a specific project?
- Incident Command System (ICS) plan
- Site-Specific Safety Plan (SSSP) (Correct answer)
- Emergency Action Plan (EAP)
- Hazardous Waste Operations Plan
Correct answer: Site-Specific Safety Plan (SSSP)
A Site-Specific Safety Plan (SSSP) documents the contractor's safety policies, procedures, and hazard controls tailored to the unique conditions of a specific construction project.
Question 3: Under OSHA's Respiratory Protection Standard (29 CFR 1910.134), which type of respirator provides the highest level of protection?
- Half-face air-purifying respirator
- Full-face air-purifying respirator
- Supplied-air respirator (SAR)
- Self-Contained Breathing Apparatus (SCBA) (Correct answer)
Correct answer: Self-Contained Breathing Apparatus (SCBA)
An SCBA provides the highest protection because it supplies its own air source, offering complete independence from the ambient atmosphere and full facial coverage.
Question 4: A construction site has a permit-required confined space. Which element is NOT required before entry?
- Testing atmospheric conditions for oxygen and hazardous gases
- Issuing an entry permit signed by an authorized entrant
- Ensuring a trained attendant is stationed outside
- Completing a written post-entry debrief within 24 hours (Correct answer)
Correct answer: Completing a written post-entry debrief within 24 hours
OSHA's confined space standard (29 CFR 1926.1203) requires atmospheric testing, a valid entry permit, and an attendant, but does not mandate a written post-entry debrief within 24 hours.
Question 5: According to OSHA's 29 CFR 1926.503, construction workers who work at heights must receive fall protection training from a:
- Qualified person
- Competent person (Correct answer)
- Licensed safety professional
- OSHA-certified instructor
Correct answer: Competent person
OSHA 1926.503 requires that fall protection training be provided by a competent person who is knowledgeable about fall hazards and prevention methods.
Question 6: What is the primary purpose of a Safety Data Sheet (SDS) Section 8 ('Exposure Controls/Personal Protection')?
- To list the chemical's physical and chemical properties
- To describe first aid measures for exposure
- To specify OELs and recommended PPE for safe handling (Correct answer)
- To detail spill and disposal procedures
Correct answer: To specify OELs and recommended PPE for safe handling
SDS Section 8 provides occupational exposure limits (OELs), engineering controls, and PPE recommendations to protect workers handling the chemical.
Question 7: Which of the following best describes the 'Fatal Four'—the leading causes of construction fatalities identified by OSHA?
- Falls, electrocution, struck-by, caught-in/between (Correct answer)
- Falls, fires, chemical exposure, struck-by
- Electrocution, drowning, struck-by, heat illness
- Falls, caught-in/between, chemical burns, fires
Correct answer: Falls, electrocution, struck-by, caught-in/between
OSHA identifies the Fatal Four as falls, electrocution, struck-by objects, and caught-in/between hazards, which together account for more than 60% of construction worker deaths.
CHST FREE CHST General Questions and Answers 5
What is the OSHA-required minimum safe distance from power lines for uninsulated overhead lines carrying up to 50 kV when using cranes or other equipment?