Confined Space Practice Test
Free · 140 Questions.

Question 1

Under O. Reg. 632/05, which two conditions must both apply before a fully or partially enclosed space is a "confined space"?

• A. It lies below grade and its only opening is smaller than 24 inches, which restricts entry and exit.
• B. It is not designed and built for continuous human occupancy, and atmospheric hazards may occur in it.
• C. It holds or has held a flammable liquid, and a worker has entered it to do work at least once.
• D. It has a single entrance, a ceiling lower than 2 metres and no permanent mechanical lighting, which slows escape from the space.

Explanation: Section 1 defines a confined space as a fully or partially enclosed space that (a) is not both designed and constructed for continuous human occupancy and (b) may develop atmospheric hazards from its construction, location, contents or the work done in it. Depth, size and number of openings do not decide it.

Question 2

Under O. Reg. 632/05, who must the employer appoint to carry out the hazard assessment of a confined space?

• A. A person with adequate knowledge, training and experience, whose qualifications the employer records.
• B. A professional engineer licensed in Ontario, since assessments require an engineer's seal.
• C. A supervisor who has completed the general health and safety awareness course and signs the permit, on the basis of that course alone.
• D. The joint health and safety committee co-chair, who approves every assessment for the workplace.

Explanation: Section 6(5) requires the employer to appoint a person with adequate knowledge, training and experience and to keep a record of those qualifications. The regulation does not require an engineer or a particular certificate; the Ministry says it can be a worker, supervisor or consultant.

Question 3

Under O. Reg. 632/05, how often must the employer have a confined space hazard assessment reviewed?

• A. As often as is necessary to ensure that the relevant plan remains adequate.
• B. At least once every 12 months, whether or not anything about the space has changed.
• C. After an incident or near miss involving the space, once the investigation report is filed.
• D. Once every three years, at the same time the written confined space program is renewed.

Explanation: Section 6(9) says the assessment is reviewed as often as necessary to keep the plan adequate; the regulation sets no calendar interval. The "at least annually" rule in s. 8(4) applies to general worker training, not to the assessment.

Question 4

Under s. 10(4) of O. Reg. 632/05, does the entry permit have to be posted at the entrance to the confined space?

• A. Yes. It must be posted at the entrance for the whole period during which it applies, and the attendant must initial it each hour.
• B. Yes, and a copy must also be posted at the employer's head office for the Ministry.
• C. No. The attendant keeps it and shows it to workers only when they ask to see it.
• D. No. It must be readily available to every person who enters or performs related work.

Explanation: Section 10(4) requires the permit to be readily available to every person who enters the space and to every person who performs related work. The Ministry says posting at the entrance is not required, but workers must know where the permit is.