Confined Space Practice Test 5

All 25 questions in this test

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

1. There is a chance someone could wander into an open confined space. What does Ontario require?

   1. Secure the entrance, or use barricades, warning signs or both
   2. Leave it open, since workers know the space is dangerous
   3. Paint the entrance red and do nothing else about it
   4. Post a guard there only on the days when the inspector visits

2. What must a competent person check before each shift while a permit is in use?

   1. That the client has paid for the work done so far
   2. That every entrant has had lunch and a coffee break
   3. That the entry permit still complies with the plan
   4. That the space has been repainted since the last shift

3. 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

4. Does every guarded piece of equipment inside a confined space have to be de-energized?

   1. Yes, but only on weekends and holidays
   2. Not always; only if it could endanger a worker
   3. Yes, every piece, even a guarded light inside
   4. No, nothing inside ever needs de-energizing

5. May hot work be done in a confined space that has no flammable gas, vapour or dust?

   1. No, hot work is banned in every confined space in Ontario
   2. Only if the worker signs a waiver releasing the employer
   3. Yes, and no permit or attendant is needed for that work
   4. Yes, if all the normal confined space measures are in place

6. In B.C., when must rescue personnel be notified about confined space work?

   1. Before workers enter, and again when everyone has exited
   2. Only if an entrant is actually injured during the work
   3. Only once a year, at the annual safety meeting
   4. Only after the job is fully finished and billed

7. Outside construction projects, how often must confined space training be reviewed in Ontario?

   1. Never, once the course certificate has been issued
   2. At least once a year, and when circumstances change
   3. Only when a worker is injured in a confined space
   4. Once every five years, unless an inspector asks

8. When does entry into a confined space legally begin in Ontario?

   1. Only after the worker has been inside for one full minute
   2. As soon as any part of the body breaks the plane of the opening
   3. Only when the worker's whole body is inside the space
   4. Only when the worker's feet touch the floor at the bottom of it

9. May an attendant take on other tasks while monitoring entrants?

   1. Yes, if the entrants are experienced and know the space
   2. No, not if they would interfere with monitoring
   3. Yes, as long as the radio is turned on
   4. Yes, any task close to the entrance

10. Where should the use of mechanical ventilation be noted?

    1. On the entry permit
    2. On the fan's box
    3. In a personal diary
    4. Nowhere at all

11. According to CCOHS, who should fill out a confined space entry permit?

    1. The newest entrant, who is learning about the job
    2. A customer who has asked for the work to be done
    3. Any office worker who has access to the permit forms
    4. Someone fully trained and experienced in the work

12. Why must pure oxygen never be used to "freshen" the air in a confined space?

    1. It greatly increases the risk of fire and explosion
    2. It is heavier than air and sinks to the floor
    3. It makes gas monitors stop working properly inside
    4. It is too expensive to buy for regular work

13. During a rescue, may the attendant join the rescue team inside the space?

    1. Yes, the attendant must always be the first rescuer to go in
    2. No, the attendant must leave the site
    3. Yes, as long as the attendant can hold their breath the whole time
    4. Only if a person trained in attendant duties replaces them

14. Under Ontario's regulation, which two conditions make an enclosed space a confined space?

    1. Used to store chemicals, and is entered more than once a week
    2. Located below ground level, and has no electric lighting inside
    3. Not built for continuous occupancy, and atmospheric hazards may occur
    4. Smaller than 2 m across, and has only one door or hatch for access

15. What is "hot work" in Ontario's confined space regulation?

    1. Work that can produce a source of ignition
    2. Work done during the night shift only
    3. Work done when the air is above 30 °C inside
    4. Work that makes the worker sweat a lot

16. What kind of instruments must be used for atmospheric testing in Ontario?

    1. Instruments borrowed from another site, without checking calibration
    2. The cheapest available meter, since all meters read the same gases
    3. Calibrated instruments in good working order, suited to the hazards
    4. Any instrument, as long as it was bought within the last ten years

17. In B.C., all workers have been out of a confined space for 30 minutes. What is required before re-entry?

    1. Nothing; the first test still counts
    2. Repeat the pre-entry testing
    3. Only open the hatch a little wider
    4. Ask the last worker how it felt

18. May an Ontario employer contract out confined space rescue services?

    1. No, rescue must always be done by the entrants' own supervisor
    2. Yes, if the response is timely; the employer stays responsible
    3. Only if the rescue company is located in the same building
    4. Yes, and then the employer has no further duties for rescue

19. What do simple asphyxiants such as nitrogen, argon and carbon dioxide do?

    1. Add oxygen to the air and make breathing easier
    2. Burn the skin on contact like a strong acid would
    3. Displace oxygen, so a person can collapse within minutes
    4. Make a strong smell that warns everyone nearby

20. How should a ventilation-failure alarm ideally be triggered?

    1. By the attendant checking the fan's colour
    2. By a flow or pressure switch in the air stream
    3. By the fan motor's own power switch only
    4. By a kitchen timer that rings once every hour

21. A walk-in freezer could, in theory, have a refrigerant leak. Is it a confined space under Ontario's regulation?

    1. No, because freezers are covered only by the food safety rules
    2. Yes, because a freezer has only one door and no windows to escape
    3. No, it is designed and built for continuous human occupancy
    4. Yes, because any room with a possible gas leak is a confined space

22. What is a double block and bleed system?

    1. Two pipes joined with a hose so any leak bleeds into a drum
    2. A blank plate fitted with two drain holes drilled through it
    3. Two closed, locked-out valves with a vent locked open between them
    4. One valve closed twice over to be sure it stays shut during the work

23. What does "escape unaided" mean in Ontario's confined space rules?

    1. Getting out within 30 seconds of hearing any alarm sound inside
    2. Getting out without a respirator, equipment or another person's help
    3. Getting out after the attendant has opened the hatch for you
    4. Getting out through any opening other than the main entry

24. 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

25. Which of these is a biological hazard that may be found in sewers and digesters?

    1. Noise from the pumps running nearby
    2. Low lighting inside the space
    3. Bacteria from fecal matter and sludge
    4. Heat from a boiler that is still cooling down