How often must the hazard assessment be reviewed in Ontario?

As often as needed to keep the plan adequate

Only every ten years by an engineer

Never, once it has been signed and dated by someone

Only when the space is painted again

Which is an example of substitution as a confined space control?

Using a cold work method instead of hot work

Writing an entry permit for each entry

Running a blower to ventilate the space

Wearing a respirator while doing the hot work

Which item must Ontario's confined space program provide for?

A list of workers' home addresses

Two tanks are of similar construction and have the same hazards. How may their assessments be recorded?

In a single document, with each tank clearly identified

On a sign at the gate, with no reference to either tank

Not at all, as similar tanks need no written assessment

Only verbally at the shift meeting, then thrown away

Confined Space overview

Confined Space: Program, hazard assessment and plan

The written program, the signed hazard assessment, the plan written by a competent person, co-ordination when several employers share a space, and the hierarchy of controls.

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14 questions
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Program, hazard assessment and plan · Question 1Score 0/0

How often should a confined space program be reviewed, at minimum?

Tip: press 1–4 to answer and Enter for the next question.

Study reference: Canadian confined space rules and guidance (Oct 2026), Ch. 3 Program, hazard assessment and plan — O. Reg. 632/05 ss. 4–7; Ontario confined spaces guideline, Roles and responsibilities, Hazard assessment; CCOHS Confined Space — Program

All 14 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

How often should a confined space program be reviewed, at minimum?
1. Every five years, unless a worker is seriously hurt
2. Only when the workplace changes its ownership
3. Only once, when it is first written by the employer
4. At least once a year, and whenever circumstances change
How often must the hazard assessment be reviewed in Ontario?
1. Only every ten years by an engineer
2. As often as needed to keep the plan adequate
3. Never, once it has been signed and dated by someone
4. Only when the space is painted again
Which is an example of substitution as a confined space control?
1. Writing an entry permit for each entry
2. Running a blower to ventilate the space
3. Wearing a respirator while doing the hot work
4. Using a cold work method instead of hot work
Which item must Ontario's confined space program provide for?
1. A ban on all hot work forever
2. An entry permit system
3. A bonus for workers who enter
4. A list of workers' home addresses
Two tanks are of similar construction and have the same hazards. How may their assessments be recorded?
1. On a sign at the gate, with no reference to either tank
2. Not at all, as similar tanks need no written assessment
3. In a single document, with each tank clearly identified
4. Only verbally at the shift meeting, then thrown away
Workers of three different contractors will work in the same tank. What is required before entry?
1. A co-ordination document prepared by the lead employer
2. Nothing extra, as each contractor follows its own rules
3. Three separate attendants who cannot talk to each other
4. A ministry permit issued by phone before the first shift
In Ontario, when must an employer have a written confined space program?
1. Before any worker enters a confined space
2. Within 30 days after the first entry is made
3. Only after an inspector asks to see it
4. Only if more than 20 workers are employed
What must the written hazard assessment consider?
1. Only the cost of the controls compared with the cost of the work
2. Only the hazards that caused injuries in this space in the last five years
3. Hazards from the space itself and hazards that may develop during the work
4. Only hazards that can be seen from the entrance with a flashlight
How does a "competent person" differ from a person with adequate knowledge, training and experience?
1. There is no difference; the two terms mean exactly the same thing
2. A competent person can also organize the work and knows the law
3. A competent person must hold a university engineering degree
4. A competent person only needs to be the most senior worker present
Outside construction projects, who must the employer consult when developing the confined space program?
1. The joint health and safety committee or the representative
2. Only the workers who volunteered for confined space entries
3. The local fire department's public education office
4. The supplier who sold the gas monitors and ventilation fans
In confined space work, which control is mechanical ventilation an example of?
1. An engineering control
2. Personal protective equipment
3. An administrative control
4. Elimination of the hazard
Which topic must the confined space plan include?
1. The company's sales targets
2. Parking rules for visitors
3. On-site rescue procedures
4. Workers' vacation schedules
Who must develop and implement the confined space plan?
1. The attendant on duty
2. The newest entrant
3. The equipment rental firm
4. A competent person
Who carries out the confined space hazard assessment in Ontario?
1. The newest worker on the crew, as part of learning
2. A ministry inspector, who must approve every assessment before use
3. A person with adequate knowledge, training and experience
4. Any worker on the crew, who does not need to sign or date the document

Program, hazard assessment and plan: key rules to remember

Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗

program

If workers may enter a confined space, the employer must have a written program before anyone enters.
The program covers how confined spaces are recognized, how hazards are assessed, how plans are developed, how workers are trained, and an entry permit system.
Outside construction projects, the program is developed with the joint health and safety committee (JHSC) or health and safety representative, who also gets a copy.

assessment

Before any worker enters, an adequate hazard assessment must be done and recorded in writing.
It considers hazards from the space's design, construction, location, use or contents, and hazards that may develop during the work.
It is done by a person with adequate knowledge, training and experience, whose qualifications the employer records; the person names, signs and dates the assessment.
Similar spaces with the same hazards may share one assessment document if each space is identified.
The assessment is reviewed as often as needed to keep the plan adequate.

plan

Before entry, an adequate written plan with procedures to control the hazards must be developed and implemented by a competent person.
The plan covers worker duties, co-ordination, on-site rescue, rescue equipment and communication, PPE, isolation of energy, attendants, entry and exit, atmospheric testing, flammable substances, and ventilation and purging.

several employers

If workers of more than one employer work in the same confined space, the lead employer (or the constructor on a project) prepares a co-ordination document before anyone enters.

roles

A person with adequate knowledge, training and experience carries out the assessment, conducts general training, inspects rescue equipment and PPE, and performs atmospheric tests.

Confined Space: Program and Introduction

Hierarchy of controls: elimination (do the job without entering), substitution (cold work instead of hot work), engineering controls (mechanical ventilation), administrative controls (entry permit system), and PPE last.
The program should be reviewed when circumstances change and at least once a year.

Study the Program, hazard assessment and plan rules as flashcards →