Confined Space Practice Test 6

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. Where possible, from where should a rescue be done?

   1. From the site office, by radio instructions
   2. From outside the confined space
   3. From the far end of the space, through a new hole
   4. From inside, as close to the victim as possible

2. While a permit is in force, who must be able to get at it readily?

   1. Only the ministry inspector, by request
   2. Only the attendant, who keeps it locked away
   3. Everyone who enters or does related work
   4. Only the company president at head office

3. Which hazard does section 14(d) of Ontario's regulation address with free-flowing materials?

   1. Drowning, engulfment, entrapment and suffocation
   2. Slips on wet floors near the entrance only
   3. Noise, vibration and poor lighting inside the space
   4. Sunburn while working at the open hatch

4. In B.C., when must natural ventilation not be relied on?

   1. In a high hazard atmosphere
   2. In spaces painted white
   3. In any space that has a fixed ladder
   4. When the weather is sunny

5. A new worker has finished the general course but has little experience. What does the guideline suggest?

   1. Keep the new worker away from all training sessions
   2. Send the new worker in alone to build confidence
   3. Make the new worker the attendant on the first day
   4. Team the new worker with more experienced workers

6. Which hazard involves being buried or trapped by grain, sand or other bulk material?

   1. Oxygen enrichment
   2. Asphyxiation by gas
   3. Thermal stress
   4. Engulfment

7. A worker collapses inside a tank. A co-worker who is untrained and has no breathing equipment wants to go in. What should happen?

   1. They should go in only if they are stronger than the collapsed worker
   2. They must not enter; trained, equipped rescuers carry out the rescue
   3. They should go in quickly and hold their breath while pulling the worker out
   4. They should go in after removing the gas monitor so it does not alarm

8. Under Ontario's regulation, when may the attendant enter the confined space?

   1. Never
   2. After 30 minutes of silence
   3. Only to fetch a dropped tool
   4. Whenever an entrant calls

9. What is the difference between purging and ventilating a confined space?

   1. Purging adds pure oxygen to the space; ventilating removes all of the oxygen
   2. Purging is done after the work ends; ventilating is only done before entry
   3. There is no difference; both words describe opening the hatch for a while
   4. Purging displaces contaminants; ventilating keeps fresh air flowing

10. Where is the attendant's name recorded?

    1. On the gas monitor
    2. Nowhere at all
    3. On the entry permit
    4. On the hatch cover

11. 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

12. In B.C., where must non-continuous confined space test results be posted?

    1. At all points of entry to the confined space
    2. Only in the head office filing cabinet, not on site
    3. Nowhere; results are kept by the tester
    4. On the company website within a week

13. Why must ventilation continue while work is being done in the space?

    1. To dry the paint on the walls more quickly
    2. Work can create contaminants and conditions can change
    3. To keep the attendant cool while they wait outside the space
    4. Because fans must run to keep their warranty valid

14. Which is a common cause of oxygen enrichment in a confined space?

    1. Nitrogen used to purge the space earlier
    2. Rust forming on the inside walls of a tank
    3. Decaying leaves at the bottom of a pit
    4. A leaking oxygen line or welding equipment

15. What is the purpose of the entry permit?

    1. To replace the hazard assessment and the written plan
    2. To prove the job was billed to the customer at the right rate
    3. To record who is allowed to drive company vehicles
    4. To tell workers the hazards and controls before anyone enters

16. In the regulation, what is "related work"?

    1. Paperwork about the entry done later in the office after the shift
    2. Work near a confined space that directly supports the work inside
    3. Work done inside a second confined space nearby at the same time
    4. Any work done anywhere on the same site on the same day

17. 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

18. Which item must an Ontario entry permit include?

    1. The cost of the job to the client
    2. The name of the attendant
    3. The entrants' home phone numbers
    4. The weather forecast for the week

19. Under what condition can a trench or ditch be a confined space?

    1. When access or exit is limited
    2. Never, because it is open to the sky
    3. Only when it is under a building
    4. Only when it is filled with water

20. When may a worker enter a space containing airborne combustible dust at a level that could explode?

    1. Any time, if the worker only uses hand tools and moves slowly
    2. Not at all, unless it is inerted and other conditions are met
    3. Any time, as long as the worker wears a dust mask and safety glasses
    4. Only during the day, when lighting inside is better for seeing

21. What must Ontario training records show?

    1. Only the workers' marks on the final quiz
    2. Only the total cost of the course for the year and who paid it
    3. Only the name of the training company used
    4. Who gave and who received the training, what it covered, and when

22. How must test results be recorded when continuous monitoring is used?

    1. At adequate intervals set by the plan
    2. Only if an alarm goes off during the work
    3. Only at the end of the year
    4. They never need to be recorded

23. 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

24. In Ontario, what must be in place before any worker enters a confined space?

    1. Written on-site rescue procedures ready for immediate use
    2. A promise from the supervisor to call 911 if anything happens
    3. The phone number of the nearest hospital posted at the hatch
    4. A list of workers who volunteered to go in if needed

25. For hot work in Ontario, flammable gas or vapour must be below what level?

    1. 25 per cent of the LEL
    2. 10 per cent of the LEL
    3. 5 per cent of the LEL
    4. 50 per cent of the LEL