Confined Space Mock Exam 2

All 40 questions in this test

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

1. 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

2. Which three things are typically tested before confined space entry?

   1. Temperature, humidity and noise levels only
   2. Oxygen level, flammable gases and toxic gases
   3. Wind speed, rainfall and time of day
   4. Lighting, floor slope and the width of the door

3. Unless a competent person has decided otherwise after a risk assessment, how should a confined space be treated?

   1. As safe if it was safe yesterday
   2. As safe once the lid is open
   3. As hazardous
   4. As safe if it smells normal

4. 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

5. 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

6. 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

7. 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

8. Why is simply closing a valve not enough to isolate a pipe into a confined space?

   1. Valves only work on water pipes
   2. A valve can leak or be opened by mistake
   3. Closing valves is illegal in Canada
   4. Valves are always made of soft plastic

9. What communication must the attendant keep with workers inside?

   1. No contact, so the workers can concentrate
   2. Constant communication using the method in the plan
   3. A wave through the hatch at the start of the job
   4. A phone call from the site office about every two hours

10. On a construction project, how long must confined space records be retained after the project ends?

    1. One week
    2. Six months
    3. Five years
    4. One year

11. What should be an essential part of confined space training?

    1. Reading the regulation aloud once in class
    2. A video watched at home with no questions
    3. A written quiz with no practical part at all
    4. Hands-on practice with the equipment and PPE

12. 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

13. A worker cleans the inside of a tank with a solvent. How can this change the space's atmosphere?

    1. It cannot change the air, since the tank was tested before entry
    2. It adds oxygen to the space, since solvents release oxygen
    3. The work itself can create solvent vapours inside the space
    4. It removes every hazard, since cleaning makes the tank safer

14. When is continuous monitoring required under Ontario's rules?

    1. Only when the confined space is larger than a standard shipping container
    2. During hot work where flammable gas may be present, or in an inerted space
    3. Only when the attendant has fewer than five years of experience
    4. Only on weekends, when fewer supervisors are on site to check

15. 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

16. 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

17. 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

18. 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

19. 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

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. Does Ontario law require the entry permit to be posted at the entrance?

    1. No, and workers do not need to know where the permit is
    2. No, but everyone involved must know where it is
    3. Yes, and a second copy must be mailed to the ministry
    4. Yes, it must be nailed to the hatch or the permit is invalid

22. Where should air removed from a confined space be exhausted?

    1. Into the nearest office window
    2. Back into the same space again
    3. Away from workers outside the space
    4. Toward the attendant standing at the hatch

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. 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

25. 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

26. 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

27. 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

28. 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

29. 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

30. For cold work in Ontario, flammable gas must be kept below what level?

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

31. 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

32. 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

33. Besides entrants, who else needs confined space training under Ontario's guidance?

    1. Attendants and rescue workers
    2. Visitors who pass by the site
    3. Nobody else needs any training
    4. Only the company's accountants

34. 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

35. In Ontario's regulation, what is the difference between a "sample" and a "test"?

    1. There is no difference; the two words mean the same thing
    2. A sample is for oxygen only; a test is for toxic gases only
    3. A sample is taken by a lab; a test is done by the attendant
    4. A sample is one reading; a test is a collection of samples

36. 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

37. 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

38. 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

39. 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?

40. 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