OIT Practice and Application 2

Question 1

When performing a lockout/tagout procedure on a piece of industrial equipment, what is the correct first step?

Accepted Answer

Identify all energy sources

Answer

The first step in lockout/tagout is to identify all energy sources associated with the equipment before any other action.

Question 2

A machinist measures a shaft diameter with a micrometer and gets a reading of 25.37 mm. The blueprint specifies 25.40 mm ± 0.03 mm. Is the part acceptable?

Accepted Answer

Yes, it is within tolerance

Answer

The acceptable range is 25.37 mm to 25.43 mm, so 25.37 mm falls exactly on the lower limit and is acceptable.

Question 3

Under Ontario's Occupational Health and Safety Act, who has the primary duty to ensure a safe workplace?

Accepted Answer

The employer

Answer

Under the OHSA, the employer bears the primary duty to ensure the workplace is safe and that all safety requirements are met.

Question 4

What type of fire extinguisher is appropriate for a Class C (electrical) fire in an industrial setting?

Accepted Answer

CO2 or dry chemical extinguisher

Answer

CO2 and dry chemical extinguishers are non-conductive and appropriate for Class C electrical fires, while water-based or foam agents conduct electricity.

Question 5

A welder notices a crack forming in a structural weld during inspection. What is the correct immediate action?

Accepted Answer

Report and tag the component out of service

Answer

A cracked structural weld must be reported and the component taken out of service until a proper repair procedure is authorized and performed.

(OIT) Ontario Industrial Trades Certification Practice Test

(OIT) Ontario Industrial Trades Certification Practice Test

OIT Practice and Application 2