OIT Core Knowledge and Fundamentals 2 — Questions and Answers
Question 1: Under the Ontario Occupational Health and Safety Act, who is primarily responsible for ensuring workplace safety?
- The Ministry of Labour inspector
- The employer (Correct answer)
- The joint health and safety committee
- The union representative
Correct answer: The employer
The OHSA places the primary duty of workplace safety on the employer, who must take every reasonable precaution to protect workers.
Question 2: What does WHMIS stand for in an industrial trades context?
- Workplace Hazardous Materials Information System (Correct answer)
- Worker Health Monitoring and Incident Screening
- Worksite Hazard Management and Inspection Standard
- Workplace Health Maintenance and Injury Statistics
Correct answer: Workplace Hazardous Materials Information System
WHMIS stands for Workplace Hazardous Materials Information System, Canada's national hazard communication standard.
Question 3: What is the purpose of lockout/tagout (LOTO) procedures in industrial trades?
- To secure tool storage at end of shift
- To prevent accidental energization of equipment during maintenance (Correct answer)
- To lock access gates during high-traffic periods
- To tag defective equipment for replacement ordering
Correct answer: To prevent accidental energization of equipment during maintenance
LOTO procedures isolate energy sources to prevent equipment from being accidentally energized while workers perform maintenance or repairs.
Question 4: Which type of fire extinguisher is appropriate for electrical equipment fires?
- Class A
- Class B
- Class C (Correct answer)
- Class D
Correct answer: Class C
Class C extinguishers are rated for electrical equipment fires because they use non-conductive agents that won't create a shock hazard.
Question 5: In Ontario trades, what is the minimum requirement before a worker may operate powered mobile equipment on a job site?
- A valid G driver's licence
- Documented competency and employer authorization (Correct answer)
- A minimum of two years of general trade experience
- Completion of a provincial certification exam
Correct answer: Documented competency and employer authorization
Ontario regulations require that operators of powered mobile equipment be competent and authorized by the employer before operation.
Question 6: What does a Safety Data Sheet (SDS) Section 8 primarily describe?
- Physical and chemical properties of the substance
- Exposure controls and personal protective equipment (Correct answer)
- First aid measures in case of exposure
- Regulatory information and disposal guidelines
Correct answer: Exposure controls and personal protective equipment
SDS Section 8 covers exposure controls and PPE, specifying occupational exposure limits and recommended protective equipment.
Question 7: When reading a blueprint, what does a dashed (hidden) line typically represent?
- A centerline of symmetry
- A feature not visible from the current view (Correct answer)
- A dimension reference line
- A section cut indicator
Correct answer: A feature not visible from the current view
Dashed or hidden lines on blueprints indicate edges or features that exist behind or below the visible surface in that particular view.
OIT Core Knowledge and Fundamentals 2
Under the Ontario Occupational Health and Safety Act, who is primarily responsible for ensuring workplace safety?