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Confined Space Awareness Course 2026

This course is for workers in Canada, including security guards and site staff, who work near tanks, pits, vaults, sewers and similar spaces. It explains what a confined space is, its hazards, air testing, entry permits, attendants and rescue. It is awareness only: it does not train you to enter a confined space, act as an attendant or take part in a rescue, which require training from your employer.

  • Curso
  • Canadá
  • 25 perguntas
  • Verificado em 13 de outubro de 2026

Resposta rápida

Este curso gratuito tem cerca de 30 minutos de lições e um teste de 25 perguntas. Com 80% ou mais pode descarregar um certificado de conclusão (privado, não acreditado). Verificado com fontes oficiais em 13 de outubro de 2026.

Comece pelas liçõesConfined Space Awareness Course: Lessons: cerca de 30 minutos de leitura. Todas as perguntas do teste são abordadas nas lições.

O que vai aprender

  • Recognize a confined space and common examples
  • Describe oxygen, flammable, toxic and engulfment hazards
  • Explain air testing, entry permits and their limits
  • Describe the attendant's role and why rescue must be planned
  • Keep unauthorized people out and respond safely in an emergency

Obtenha 80% ou mais para descarregar o seu certificado.

  1. Pergunta 1 de 25

    Which of these is part of the general definition of a confined space?
    Mostrar resposta

    Resposta: A. It is not built for people to stay in

    A confined space is not designed for continuous human occupancy, has limited entry or exit, and can be hazardous.

  2. Pergunta 2 de 25

    Is a confined space always small?
    Mostrar resposta

    Resposta: D. No, it can be large, like a silo

    CCOHS notes that a confined space, despite its name, is not necessarily small. Silos and tanks can be very large.

  3. Pergunta 3 de 25

    Which of these is most likely to be a confined space?
    Mostrar resposta

    Resposta: B. A storage tank

    Storage tanks are confined spaces. Ontario's guideline says offices, shops and walk-in freezers are designed for occupancy.

  4. Pergunta 4 de 25

    Normal air contains about how much oxygen?
    Mostrar resposta

    Resposta: B. 21%

    Normal air is about 21% oxygen. Lower levels can cause collapse and death.

  5. Pergunta 5 de 25

    Under Ontario's confined spaces rules, oxygen outside which range is an atmospheric hazard?
    Mostrar resposta

    Resposta: B. 19.5% to 23%

    Ontario treats oxygen below 19.5% or above 23% by volume as an atmospheric hazard.

  6. Pergunta 6 de 25

    Why should you never use pure oxygen to freshen the air in a confined space?
    Mostrar resposta

    Resposta: D. Extra oxygen makes fires far more likely

    Too much oxygen greatly increases the risk of fire and explosion. CCOHS says never substitute oxygen for fresh air.

  7. Pergunta 7 de 25

    Nitrogen, argon and carbon dioxide can be deadly in a confined space. Why?
    Mostrar resposta

    Resposta: A. They push out oxygen

    These simple asphyxiants displace oxygen. Unconsciousness or death can follow within minutes.

  8. Pergunta 8 de 25

    Which toxic gas does CCOHS name as a confined space hazard?
    Mostrar resposta

    Resposta: A. Hydrogen sulphide

    CCOHS gives hydrogen sulphide and carbon monoxide as examples of toxic gases in confined spaces.

  9. Pergunta 9 de 25

    What is engulfment?
    Mostrar resposta

    Resposta: D. Being buried by grain, sand or liquid

    Engulfment means being trapped or buried by shifting or collapsing bulk material, or by flooding liquid.

  10. Pergunta 10 de 25

    Why is a problem inside a confined space more dangerous than the same problem in an open room?
    Mostrar resposta

    Resposta: C. Escape and rescue are much harder

    There is less margin for error, rescue and self-rescue are harder, ventilation is poor and conditions can change quickly.

  11. Pergunta 11 de 25

    Where should the air in a confined space first be tested?
    Mostrar resposta

    Resposta: A. From outside, before anyone enters

    Air should be tested from outside the space before anyone enters.

  12. Pergunta 12 de 25

    In BC, pre-entry air testing must be done no more than how long before a worker enters?
    Mostrar resposta

    Resposta: C. 20 minutes

    BC's OHS Regulation s. 9.25 requires testing to be completed not more than 20 minutes before entry.

  13. Pergunta 13 de 25

    Under Ontario's guideline, cold work (no sparks or flames) may be done only if flammable gas is below what level?
    Mostrar resposta

    Resposta: C. 10% of the LEL

    Ontario's decision chart allows cold work below 10% of the lower explosive limit; hot work needs less than 5%.

  14. Pergunta 14 de 25

    In Ontario, at what flammable gas level is entry into a confined space not allowed at all?
    Mostrar resposta

    Resposta: B. 25% of the LEL or more

    Ontario's guideline allows inspection only below 25% of the LEL. At 25% or more, entry is not permitted.

  15. Pergunta 15 de 25

    What does LEL stand for in air testing?
    Mostrar resposta

    Resposta: D. Lower explosive limit

    Flammable gas readings are given as a percentage of the lower explosive limit (LEL).

  16. Pergunta 16 de 25

    In Ontario, how often must a new entry permit be issued?
    Mostrar resposta

    Resposta: C. Each time work is done in the space

    Ontario's regulation (s. 10) requires a separate entry permit each time work is to be performed in a confined space.

  17. Pergunta 17 de 25

    Which item must an Ontario entry permit include?
    Mostrar resposta

    Resposta: A. The results of the air tests

    The permit lists the location, work, hazards and controls, time period, attendant, entries and exits, equipment and atmospheric test results.

  18. Pergunta 18 de 25

    Where must the attendant be during a confined space entry in Ontario?
    Mostrar resposta

    Resposta: A. Outside and near the entrance

    Ontario's guideline says the attendant stays outside and near the entrance and does not enter.

  19. Pergunta 19 de 25

    A worker inside collapses. The attendant is alone at the entrance. What should the attendant do?
    Mostrar resposta

    Resposta: C. Stay outside and call for rescue

    The attendant must not enter. They call for emergency rescue right away, keep communication and support the rescue.

  20. Pergunta 20 de 25

    According to CCOHS, about what share of confined space deaths are would-be rescuers?
    Mostrar resposta

    Resposta: D. About 60% or more

    CCOHS reports that more than 60% of confined space deaths are would-be rescuers.

  21. Pergunta 21 de 25

    In Ontario, what must be in place before anyone enters a confined space?
    Mostrar resposta

    Resposta: C. A ready on-site rescue plan

    Ontario (s. 11) requires written on-site rescue procedures ready for immediate use and enough trained rescuers before entry. Calling 911 alone does not count.

  22. Pergunta 22 de 25

    In BC, in a low or moderate hazard confined space, a standby person must check on the workers inside at least how often?
    Mostrar resposta

    Resposta: B. Every 20 minutes

    BC's OHS Regulation (ss. 9.34 and 9.35) requires checks at least every 20 minutes in low and moderate hazard spaces. In high hazard spaces the standby person must monitor the workers continuously.

  23. Pergunta 23 de 25

    Under Ontario's rules, how must entrances be handled if unauthorized entry is possible?
    Mostrar resposta

    Resposta: B. Secured, or barricaded and signed

    Ontario (s. 17) requires each entrance to be secured, or to have adequate barricades, warning signs or both.

  24. Pergunta 24 de 25

    Before a confined space is closed up after work, what must be checked?
    Mostrar resposta

    Resposta: D. That no one is still inside

    CCOHS says no confined space should be closed off until it has been verified that no person is inside.

  25. Pergunta 25 de 25

    Under Ontario's regulation, who must receive adequate training?
    Mostrar resposta

    Resposta: A. Entrants, attendants and rescuers

    Ontario (s. 8) requires adequate training for every worker who enters a confined space or does related work, such as attendants and rescuers.

O que saber antes do exame

  • All Canadian jurisdictions have confined space entry regulations, with small differences between them.
  • CCOHS reports that more than 60% of confined space deaths are would-be rescuers.
  • Ontario treats oxygen below 19.5% or above 23% by volume as an atmospheric hazard.
  • In Ontario, a separate entry permit is needed each time work is to be done in a confined space.
  • In BC, pre-entry testing must be done no more than 20 minutes before a worker enters.

Perguntas frequentes

Can I enter a confined space after this course?

No. Only workers trained by their employer and authorized under the site's plan and entry permit may enter. Ontario, for example, requires adequate training for entrants, attendants and rescuers. This course is awareness only.

What should I do if someone collapses inside a confined space?

Do not go in. Raise the alarm, call the trained rescue team and 911 as your site plan says, and keep others out.

Why do so many rescuers die?

People rush in to help without testing the air or wearing supplied air, and are overcome by the same hazard. CCOHS reports more than 60% of confined space deaths are would-be rescuers.

O certificado é acreditado ou reconhecido oficialmente?

Não. É um certificado de conclusão privado, apenas para o seu conhecimento. Não é reconhecido, acreditado nem aprovado por nenhum governo, entidade licenciadora, regulador ou instituição de ensino e não substitui qualquer licença, certificação ou formação exigida por lei.

Fontes

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