CRST Workplace Hazard Identification and Control 1 — Questions and Answers
Question 1: According to the hierarchy of hazard controls, which measure is considered the most effective?
- Administrative controls
- Elimination of the hazard (Correct answer)
- Personal protective equipment
- Engineering controls
Correct answer: Elimination of the hazard
Elimination removes the hazard entirely from the workplace, making it the most effective control in the hierarchy because the hazard no longer exists.
Question 2: Which of the following is an example of an engineering control for noise hazards?
- Requiring workers to wear hearing protection
- Installing noise barriers around machinery (Correct answer)
- Rotating workers to limit noise exposure time
- Posting warning signs in noisy areas
Correct answer: Installing noise barriers around machinery
Engineering controls physically modify the work environment or equipment to reduce hazard exposure, such as installing sound barriers between workers and noise sources.
Question 3: What is the primary purpose of a Job Hazard Analysis (JHA)?
- To assign responsibility for safety tasks to supervisors
- To document incidents after they occur for reporting purposes
- To identify hazards associated with specific job tasks before work begins (Correct answer)
- To train workers on emergency evacuation procedures
Correct answer: To identify hazards associated with specific job tasks before work begins
A JHA systematically examines each step of a job task to identify associated hazards and implement appropriate controls before work begins, preventing injuries proactively.
Question 4: Which hazard category includes chemical spills, toxic substances, and exposure to corrosive materials?
- Physical hazards
- Chemical hazards (Correct answer)
- Ergonomic hazards
- Biological hazards
Correct answer: Chemical hazards
Chemical hazards encompass any substance that can cause harm through contact, inhalation, or ingestion, including spills, toxic materials, and corrosive agents.
Question 5: When conducting a workplace hazard inspection, which approach is most effective?
- Conducting inspections only after incidents occur
- Focusing solely on obvious physical hazards visible to inspectors
- Using a systematic, planned approach with a standardized checklist (Correct answer)
- Delegating all inspections to front-line workers without supervisor involvement
Correct answer: Using a systematic, planned approach with a standardized checklist
A systematic, planned inspection using a checklist ensures consistent and comprehensive identification of hazards across all areas and hazard types, reducing the chance of oversights.
Question 6: What does the Risk Priority Number (RPN) in a Failure Mode and Effects Analysis (FMEA) help determine?
- The total number of workers exposed to a specific hazard
- The direct cost of implementing recommended hazard controls
- The relative priority of risks based on severity, occurrence, and detectability ratings (Correct answer)
- The minimum training time required for workers handling hazardous equipment
Correct answer: The relative priority of risks based on severity, occurrence, and detectability ratings
The RPN is calculated by multiplying severity, occurrence, and detectability ratings, enabling safety professionals to prioritize which failure modes require the most urgent attention.
Question 7: Which type of workplace hazard is associated with repetitive motion, awkward postures, and forceful exertions?
- Chemical hazard
- Biological hazard
- Ergonomic hazard (Correct answer)
- Radiological hazard
Correct answer: Ergonomic hazard
Ergonomic hazards involve physical factors related to how the body interacts with the work environment, including repetitive motion, awkward postures, and forceful exertions that can cause musculoskeletal injuries.
CRST Workplace Hazard Identification and Control 1
According to the hierarchy of hazard controls, which measure is considered the most effective?