Confined Space Practice Test 3

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. Which forms of hazardous energy must be isolated and locked out before entry?

   1. Only electrical energy, as other forms cannot hurt anyone inside
   2. Electrical, mechanical, hydraulic, pneumatic, chemical and thermal
   3. Only energy from equipment that is newer than five years old or so
   4. Only energy sources located inside the space, never outside it

2. How often must an entry permit be issued in Ontario?

   1. Once a year for each confined space on the site, in January
   2. Once for each worker, valid for their whole career
   3. Separately, each time work is to be done in the space
   4. Only for the first entry into a new confined space

3. Which task is part of the attendant's assistance role in Ontario's guideline?

   1. Passing in fresh-air packs and other protective equipment
   2. Doing the hot work inside so the entrants do not have to
   3. Signing the workers' timesheets at the end of the day
   4. Moving the company vehicles parked near the hatch

4. If welding is planned inside the space, what must the permit contain?

   1. A note that the attendant will also do the welding
   2. Adequate provisions and control measures for the hot work
   3. Only the welder's certificate number and photograph
   4. Nothing more, since welding is covered by the fire code only

5. In Ontario, an oxygen level below what percentage is an atmospheric hazard?

   1. 16 per cent
   2. 21.5 per cent
   3. 19.5 per cent
   4. 23 per cent

6. Before hot work in a confined space, what should be done with surfaces coated in combustible material?

   1. Leave them alone
   2. Paint over them first
   3. Clean or shield them
   4. Heat them first

7. 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

8. Even with mechanical ventilation running, what can remain inside a confined space?

   1. Only harmless water vapour from the workers' breathing
   2. Pockets of toxic gas in areas the air does not reach
   3. Extra oxygen that is created by the fan's motor running
   4. Nothing at all; ventilation always removes every hazard

9. Must every member of an Ontario rescue team have all three kinds of rescue training?

   1. Yes, and each must also be a licensed nurse
   2. No, as long as the team as a whole has them
   3. No, training is optional for rescue workers
   4. Yes, each person must hold every certificate

10. What minimum manhole diameter does the Ontario guideline recommend for safe entry?

    1. 24 inches
    2. 48 inches
    3. 12 inches
    4. 16 inches

11. Roughly what share of confined space deaths are would-be rescuers?

    1. About 25 per cent
    2. About 5 per cent
    3. About 60 per cent
    4. Almost none

12. What is required of the rescue equipment named in the plan?

    1. Readily available, suitable for the space, and inspected
    2. Shared with other sites, wherever it is needed
    3. Bought new for each entry and thrown away after
    4. Stored at head office, to keep it safe, clean and dry

13. 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

14. What should an attendant do if a hazard appears that is not already controlled?

    1. Wait to see whether it gets worse first
    2. Enter the space to investigate the cause
    3. Order the workers to evacuate immediately
    4. Finish their own paperwork before acting

15. Which is one of the attendant's three main duties under Ontario's regulation?

    1. Do the paperwork for the next job site
    2. Enter to help carry heavy tools inside
    3. Repair the ventilation fan if it fails during work
    4. Monitor the safety of the workers inside

16. A combustible gas meter calibrated with pentane is used where methane may be present. What should the user know?

    1. It cannot detect methane at all, so it must never be used in that space
    2. It only works if the space also contains some pentane
    3. It reads every combustible gas exactly the same way as pentane
    4. It reads methane differently, so results need careful interpretation

17. A worker reaches a hand into a 15 cm pipe opening. Does the Confined Spaces Regulation apply?

    1. No, and no other health and safety duties apply to the work at all
    2. Yes, because pipes are always listed as confined spaces in the law
    3. No, but the employer must still take every reasonable precaution
    4. Yes, because any body part breaking the plane counts as a full entry

18. Is an annual review of training the same as annual retraining in Ontario?

    1. Yes; the review replaces all other confined space training
    2. Yes; every worker must sit a brand-new course every January
    3. No; training never needs to be repeated once completed
    4. No; a review checks adequacy, and refresher training may follow

19. An unguarded mixer is inside a tank to be entered. What does Ontario require?

    1. Tell the entrants to stay at least one metre away from the mixer's blades
    2. Run it at its slowest speed so entrants can see it moving
    3. Lock out and tag it, or block it if lockout is not practical
    4. Nothing, as mixers are not considered dangerous equipment

20. Must every brief step out of the space to grab a nearby tool be logged as an exit?

    1. No; the method of recording is set in the employer's program
    2. No, because entries and exits are never recorded at all
    3. Yes, and the whole permit must be rewritten each time
    4. Yes, and the worker must also be re-checked by a doctor each time

21. From where should the air in a confined space first be tested?

    1. From inside, by the first entrant
    2. From the office, using a webcam
    3. From outside, before anyone enters
    4. From the bottom, after climbing in

22. In B.C., what does "clean respirable air" in a confined space contain?

    1. Any oxygen level, as long as it does not smell bad
    2. About 16 % oxygen and no carbon dioxide at all
    3. About 20.9 % oxygen and no measurable flammable gas
    4. About 25 % oxygen and a small amount of methane

23. About how much oxygen does normal outdoor air contain?

    1. About 78 per cent
    2. About 21 per cent
    3. About 16 per cent
    4. About 50 per cent

24. What does CCOHS advise about bringing fuel containers into a confined space?

    1. Bring as many as the work might need
    2. Do not bring them in, if possible
    3. Bring them in, but keep them near the exit
    4. Bring them in only after the hot work starts

25. One rescue team covers two confined spaces entered at the same time. What problem does the guideline point out?

    1. A rescue team may only cover spaces that are exactly the same size
    2. There is no problem; one team can always cover any number of spaces
    3. Two spaces can never be entered on the same day under any circumstances
    4. A team busy at one space cannot rescue immediately at the other