Confined Space Practice Test 2

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. 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

2. In B.C., what is a blind?

   1. A solid plate on the end of a pipe that has been disconnected
   2. A warning sign placed at the entrance to the space
   3. A valve that cannot be seen from outside the space
   4. A curtain hung across the entrance to keep the light out of it

3. What must the employer provide each worker who enters a confined space?

   1. A bonus for each hour the worker spends inside the space
   2. Adequate PPE, clothing and devices under the plan
   3. A written promise that nothing will go wrong
   4. A personal gas monitor bought by the worker

4. What should be the first question before planning a confined space entry?

   1. Is the space cooler than the outside air today?
   2. How fast can the job be finished once inside?
   3. Can the work be done without entering the space?
   4. Which worker is the smallest and can fit best?

5. Toxic contaminants count as an atmospheric hazard in Ontario when they could do what?

   1. Threaten life or stop a person escaping unaided
   2. Make the space slightly warmer than outside
   3. Leave dust on the worker's clothing after work
   4. Cause a mild smell that bothers some of the workers

6. A confined space has been left unoccupied and unattended over lunch. What must happen before anyone re-enters?

   1. The atmosphere must be tested again
   2. The permit must be thrown away
   3. Nothing, if the morning test was good
   4. The attendant must enter first to check

7. Can calling 911 be an employer's confined space rescue plan in Ontario?

   1. Yes, as long as the attendant has a working phone
   2. No; 911 does not replace on-site rescue procedures
   3. Yes, if the space is within 10 minutes of a fire hall
   4. Yes, for any confined space smaller than a garage

8. Ventilation of a space is not practical for technical reasons. What must entrants use in Ontario?

   1. Only a paper dust mask, as long as they stay inside for under an hour
   2. Respiratory protection, rescue-locating equipment and other needed gear
   3. Only a radio, so that they can describe the smell to the attendant
   4. Nothing extra, since the space is exempt when fans cannot be used

9. Readings show 8 % of the LEL and 20.5 % oxygen. What work does Ontario's decision tree allow?

   1. No work at all; entry is refused
   2. Cold work or inspection, but not hot work
   3. Hot work, cold work and inspection
   4. Hot work only, if a fire watch is posted

10. Why is mechanical ventilation usually needed instead of relying on natural air currents?

    1. Mechanical fans always add oxygen-rich air from compressed tanks
    2. Fans make the space quieter so workers can talk better
    3. Natural air currents are usually unreliable and insufficient
    4. Natural air currents are banned by every province's law

11. In B.C., what must the standby person do when workers are in a high hazard atmosphere?

    1. Check on them every 20 minutes from the site office
    2. Stay at the entrance and continuously monitor them
    3. Enter with them to share the work
    4. Go for help and return within the hour

12. How must electrical energy that could endanger an entrant be controlled in Ontario?

    1. Covered with a tarp so no one touches it
    2. Left on, but with a warning sign posted on the switch
    3. Disconnected, de-energized, locked out and tagged
    4. Switched off by the operator, with no lock

13. Two manholes lead into separate but similar confined spaces. How many entry permits are needed?

    1. One per week for the crew
    2. One for all spaces on the street
    3. None, if they are similar
    4. One for each confined space

14. In B.C., if a fire department will provide confined space rescue, what is required?

    1. A thank-you letter after each job
    2. A verbal promise made by phone to the supervisor
    3. Nothing; fire departments always come
    4. A written agreement detailing the services

15. Above what oxygen level is a confined space atmosphere considered oxygen-enriched in Ontario?

    1. 21 per cent
    2. 23 per cent
    3. 30 per cent
    4. 19.5 per cent

16. Why is a confined space often more dangerous than an ordinary work area?

    1. Only new workers are ever assigned to work in confined spaces
    2. Confined spaces are never inspected by health and safety officers
    3. Conditions can change quickly and escape and rescue are harder
    4. Workers inside are always paid less than other workers on site

17. What should be noted on the permit when a worker leaves the confined space?

    1. The worker's next task
    2. The price of the job
    3. The time of exit
    4. The colour of the air

18. What should a good attendant be able to recognize in entrants?

    1. How much each tool inside the space costs to replace
    2. Whether entrants are working fast enough to finish the job on time
    3. Which entrant is the most senior worker on the crew
    4. Signs, symptoms and behaviour changes caused by the space's hazards

19. For inspection work only, with no ignition source, the flammable gas level must be below what?

    1. 100 per cent of the lower explosive limit
    2. 50 per cent of the lower explosive limit
    3. 25 per cent of the lower explosive limit
    4. 1 per cent of the upper explosive limit

20. 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

21. A space has been made inert. What must entrants use?

    1. Only a hard hat and safety glasses, since inert gas is harmless to people
    2. Nothing special, since an inert space cannot catch fire or explode
    3. Respiratory protection and equipment that allows rescue from outside
    4. Only a flashlight, so they can see where the inert gas is collecting

22. Which gas must never be used to ventilate a confined space?

    1. Filtered fresh air
    2. Supplied breathing air
    3. Pure oxygen
    4. Clean outdoor air

23. Outside construction projects, how long must confined space records such as permits and test results be kept in Ontario?

    1. Ten years, in a sealed box sent to the ministry office
    2. Only until the next entry permit is issued for the space
    3. 30 days after the work ends, then they must be shredded
    4. One year, or longer to keep the two latest of each kind

24. Your gas monitor alarms while you are working inside a confined space. What should you do?

    1. Leave the space immediately
    2. Turn the monitor off and on
    3. Move deeper into the space
    4. Finish the task, then leave

25. 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