CITB Health, Safety, and Environmental Management 3 — Questions and Answers
Question 1: What color is typically used for safety signs that warn of a physical danger or hazardous condition on US construction sites?
- Green
- Blue
- Orange
- Yellow (Correct answer)
Correct answer: Yellow
Yellow is the standard ANSI/OSHA color for caution signs that warn of potential hazards requiring special precautions.
Question 2: Which document outlines the safety rules, procedures, and responsibilities for an entire construction project?
- Toolbox Talk Record
- Site-Specific Safety Plan (SSSP) (Correct answer)
- Material Safety Data Sheet
- Subcontractor Agreement
Correct answer: Site-Specific Safety Plan (SSSP)
A Site-Specific Safety Plan tailors general safety requirements to the unique conditions and hazards of a particular project.
Question 3: What is the minimum safe approach distance from overhead power lines for equipment that can reach up to 20 feet?
- 3 feet
- 6 feet
- 10 feet (Correct answer)
- 20 feet
Correct answer: 10 feet
OSHA requires a minimum 10-foot clearance from energized power lines for equipment that could reach them, absent specific utility de-energizing procedures.
Question 4: Stormwater runoff from a construction site carries sediment into a nearby stream. Which best management practice (BMP) primarily prevents this?
- Installing silt fences and sediment basins (Correct answer)
- Covering materials with tarps only
- Increasing site lighting
- Using biodegradable solvents
Correct answer: Installing silt fences and sediment basins
Silt fences and sediment basins are erosion and sediment control BMPs that capture runoff before it reaches waterways.
Question 5: What does MSDS (now SDS under GHS) stand for, and what is its primary use on a construction site?
- Material Safety Data Sheet — provides hazard information for chemicals used on-site (Correct answer)
- Management Safety Directive — sets rules for supervisors
- Mechanical System Design Specification — covers equipment blueprints
- Mandatory Site Documentation Sheet — records daily attendance
Correct answer: Material Safety Data Sheet — provides hazard information for chemicals used on-site
A Safety Data Sheet (SDS) provides detailed information on chemical properties, hazards, safe handling, and emergency response for hazardous substances.
Question 6: Which type of excavation is considered the most stable and requires the least amount of shoring?
- Type C soil
- Type B soil
- Type A soil (Correct answer)
- Unstable rock
Correct answer: Type A soil
Type A soil is the most cohesive and stable, with an unconfined compressive strength of 1.5 tons per square foot or greater.
Question 7: Under OSHA 29 CFR 1926, when is a safety net system required during construction?
- Only when workers are above 6 feet
- When work is performed more than 25 feet above a lower level and other fall protection is infeasible (Correct answer)
- Whenever a worker is on a ladder
- Only on steel erection projects
Correct answer: When work is performed more than 25 feet above a lower level and other fall protection is infeasible
Safety nets are required when conventional fall protection (guardrails, personal fall arrest) is not feasible and work is above 25 feet.
CITB Health, Safety, and Environmental Management 3
What color is typically used for safety signs that warn of a physical danger or hazardous condition on US construction sites?