OIT Safety and Compliance 2 — Questions and Answers
Question 1: Under the Occupational Health and Safety Act (OHSA) in Ontario, what is the primary duty of a constructor at a project site?
- Ensure all workers are unionized
- Ensure the health and safety of all workers on the project (Correct answer)
- Maintain payroll records for all subcontractors
- Obtain building permits before work begins
Correct answer: Ensure the health and safety of all workers on the project
A constructor has the highest duty on a project site and must ensure the health and safety of all workers, including those of subcontractors.
Question 2: Which document must an employer provide to a worker before the worker is exposed to a hazardous material in Ontario?
- Job hazard analysis
- Safety Data Sheet (SDS) (Correct answer)
- Incident report form
- Worker compensation form
Correct answer: Safety Data Sheet (SDS)
Employers must provide workers with a Safety Data Sheet (SDS) before exposure to any controlled product under WHMIS regulations.
Question 3: A lockout/tagout procedure is required when a worker must:
- Operate machinery at reduced speed
- Service, maintain, or repair equipment where unexpected energization could occur (Correct answer)
- Work overtime on a production machine
- Lubricate a running conveyor belt
Correct answer: Service, maintain, or repair equipment where unexpected energization could occur
Lockout/tagout (LOTO) is required to isolate and de-energize equipment before servicing to prevent unexpected startup.
Question 4: In Ontario, what is the maximum load a single worker is typically expected to manually lift without mechanical assistance under ergonomic guidelines?
- 10 kg
- 23 kg (Correct answer)
- 50 kg
- 75 kg
Correct answer: 23 kg
Ontario ergonomic guidelines recommend a maximum manual lift of approximately 23 kg (50 lbs) for a single worker under ideal conditions.
Question 5: Which class 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 and use non-conductive agents to suppress flames.
Question 6: A Joint Health and Safety Committee (JHSC) is mandatory in Ontario workplaces with how many regularly employed workers?
- 5 or more
- 10 or more
- 20 or more (Correct answer)
- 50 or more
Correct answer: 20 or more
Ontario's OHSA requires a JHSC in workplaces that regularly employ 20 or more workers.
Question 7: What is the purpose of a confined space entry permit in industrial trades?
- To document worker overtime in restricted areas
- To authorize and control entry into spaces with limited access that pose atmospheric or physical hazards (Correct answer)
- To list the tools allowed inside a storage room
- To track inventory in enclosed warehouses
Correct answer: To authorize and control entry into spaces with limited access that pose atmospheric or physical hazards
A confined space entry permit verifies that hazard assessments, atmospheric testing, and rescue plans are in place before entry.
OIT Safety and Compliance 2
Under the Occupational Health and Safety Act (OHSA) in Ontario, what is the primary duty of a constructor at a project site?