Confined Space Practice Test 7

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. What is blanking?

   1. Painting a pipe white so it is easy to see from the hatch
   2. Inserting a solid metal plate between two pipe flanges
   3. Turning a valve handle a quarter turn closed
   4. Wrapping a pipe in tape to stop small leaks

2. 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

3. Which statement about the size of confined spaces is correct?

   1. A confined space must be smaller than a car
   2. A confined space is not necessarily small
   3. A confined space must have one opening
   4. A confined space must be underground

4. 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

5. 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

6. Why must the size of the space's openings be considered when choosing rescue equipment?

   1. Larger openings require more expensive equipment to be purchased
   2. Small openings mean that no rescue equipment is needed at all
   3. Opening size only matters for the paperwork, not the rescue
   4. Equipment and rescuers must fit through the entry and exit points

7. 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

8. What does inerting a space with nitrogen do?

   1. Cleans the walls of the space so no residue remains
   2. Removes the fire hazard but leaves too little oxygen to breathe
   3. Adds oxygen so workers can breathe more easily inside the space
   4. Makes the space safe to enter with no breathing equipment

9. A street manhole is next to busy traffic. Which contaminant may enter it from outside?

   1. Extra oxygen pushed in by passing trucks
   2. Chlorine from nearby swimming pools
   3. Ozone created by the traffic lights
   4. Carbon monoxide from vehicle exhaust

10. Where should the fresh-air supply and the exhaust be placed?

    1. Both at the very bottom
    2. As far apart as possible
    3. Side by side at the hatch
    4. In the same small opening

11. In Ontario, who performs atmospheric tests in a confined space?

    1. A ministry inspector, who must attend every confined space entry in person
    2. The first worker to enter, judging by how the air inside the space smells
    3. A person the employer appoints with adequate knowledge, training and experience
    4. Any worker who happens to be nearby with a gas monitor

12. What does Ontario require for getting in and out of a confined space?

    1. A ladder only for the first worker, then a jump down
    2. An adequate means of entering and exiting for all entrants
    3. A single rope for all entrants, tied to a nearby vehicle
    4. No special means, as long as workers are fit and agile

13. Which atmospheric information goes on the entry permit?

    1. The results of the atmospheric tests
    2. Only the brand of the gas monitor used
    3. Only a note saying the air smelled fine
    4. Nothing; test results are kept secret

14. Which task is an example of cold work?

    1. Grinding a steel plate
    2. Cutting with a torch
    3. Welding a cracked pipe joint
    4. Adjusting a valve by hand

15. 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

16. Which feature is part of B.C.'s definition of a confined space but not Ontario's?

    1. Limited or restricted entry or exit that may complicate rescue
    2. Being large enough for a worker to enter and do the work
    3. Not being designed or intended for continuous human occupancy
    4. Being fully or partly enclosed on several sides of the space

17. If mechanical ventilation is needed to keep the air safe, what else does Ontario require?

    1. A spare fan stored in the office down the hall
    2. A warning system and exit procedure for ventilation failure
    3. Nothing else, as long as the fan is fairly new
    4. A second attendant who stands inside the space with the workers

18. 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

19. 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

20. 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

21. A single isolating valve is the only barrier against a poisonous gas line. What does the guideline say?

    1. It is adequate, if the valve was tested last year by the maker
    2. It is adequate, as long as the attendant watches the valve
    3. It is not adequate; something like a double block and bleed may be
    4. It is adequate, as long as the valve is painted bright red and tagged

22. Ontario rescue persons must be trained in which three areas?

    1. Fire inspection, building codes and electrical design work
    2. Rescue procedures, first aid and CPR, and the rescue equipment
    3. Welding, forklift driving and crane hand signals used on the site
    4. Accounting, payroll and the company's sales procedures

23. How does a "competent person" differ from a person with adequate knowledge, training and experience?

    1. There is no difference; the two terms mean exactly the same thing
    2. A competent person can also organize the work and knows the law
    3. A competent person must hold a university engineering degree
    4. A competent person only needs to be the most senior worker present

24. Which topic must the confined space plan include?

    1. The company's sales targets
    2. Parking rules for visitors
    3. On-site rescue procedures
    4. Workers' vacation schedules

25. What must the attendant be provided with?

    1. A second job to do while the entrants are working
    2. A ladder to climb in and help whenever it is needed
    3. A device for summoning an adequate rescue response
    4. A key to lock the hatch while workers are inside