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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.

  • Corso
  • Canada
  • 25 domande
  • Verificato: 13 ottobre 2026

In breve

Questo corso gratuito ha circa 30 minuti di lezioni e un test di 25 domande. Con l’80% o più puoi scaricare un attestato di completamento (privato, non accreditato). Verificato sulle fonti ufficiali in data 13 ottobre 2026.

Inizia dalle lezioniConfined Space Awareness Course: Lessons: circa 30 minuti di lettura. Ogni domanda del test è trattata nelle lezioni.

Cosa imparerai

  • 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

Ottieni almeno l’80% per scaricare il tuo attestato.

  1. Domanda 1 di 25

    Which of these is part of the general definition of a confined space?
    Mostra la risposta

    Risposta: 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. Domanda 2 di 25

    Is a confined space always small?
    Mostra la risposta

    Risposta: 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. Domanda 3 di 25

    Which of these is most likely to be a confined space?
    Mostra la risposta

    Risposta: B. A storage tank

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

  4. Domanda 4 di 25

    Normal air contains about how much oxygen?
    Mostra la risposta

    Risposta: B. 21%

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

  5. Domanda 5 di 25

    Under Ontario's confined spaces rules, oxygen outside which range is an atmospheric hazard?
    Mostra la risposta

    Risposta: B. 19.5% to 23%

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

  6. Domanda 6 di 25

    Why should you never use pure oxygen to freshen the air in a confined space?
    Mostra la risposta

    Risposta: 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. Domanda 7 di 25

    Nitrogen, argon and carbon dioxide can be deadly in a confined space. Why?
    Mostra la risposta

    Risposta: A. They push out oxygen

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

  8. Domanda 8 di 25

    Which toxic gas does CCOHS name as a confined space hazard?
    Mostra la risposta

    Risposta: A. Hydrogen sulphide

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

  9. Domanda 9 di 25

    What is engulfment?
    Mostra la risposta

    Risposta: 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. Domanda 10 di 25

    Why is a problem inside a confined space more dangerous than the same problem in an open room?
    Mostra la risposta

    Risposta: 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. Domanda 11 di 25

    Where should the air in a confined space first be tested?
    Mostra la risposta

    Risposta: A. From outside, before anyone enters

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

  12. Domanda 12 di 25

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

    Risposta: C. 20 minutes

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

  13. Domanda 13 di 25

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

    Risposta: 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. Domanda 14 di 25

    In Ontario, at what flammable gas level is entry into a confined space not allowed at all?
    Mostra la risposta

    Risposta: 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. Domanda 15 di 25

    What does LEL stand for in air testing?
    Mostra la risposta

    Risposta: D. Lower explosive limit

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

  16. Domanda 16 di 25

    In Ontario, how often must a new entry permit be issued?
    Mostra la risposta

    Risposta: 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. Domanda 17 di 25

    Which item must an Ontario entry permit include?
    Mostra la risposta

    Risposta: 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. Domanda 18 di 25

    Where must the attendant be during a confined space entry in Ontario?
    Mostra la risposta

    Risposta: A. Outside and near the entrance

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

  19. Domanda 19 di 25

    A worker inside collapses. The attendant is alone at the entrance. What should the attendant do?
    Mostra la risposta

    Risposta: 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. Domanda 20 di 25

    According to CCOHS, about what share of confined space deaths are would-be rescuers?
    Mostra la risposta

    Risposta: D. About 60% or more

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

  21. Domanda 21 di 25

    In Ontario, what must be in place before anyone enters a confined space?
    Mostra la risposta

    Risposta: 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. Domanda 22 di 25

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

    Risposta: 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. Domanda 23 di 25

    Under Ontario's rules, how must entrances be handled if unauthorized entry is possible?
    Mostra la risposta

    Risposta: 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. Domanda 24 di 25

    Before a confined space is closed up after work, what must be checked?
    Mostra la risposta

    Risposta: 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. Domanda 25 di 25

    Under Ontario's regulation, who must receive adequate training?
    Mostra la risposta

    Risposta: 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.

Cosa sapere prima del test

  • 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.

Domande frequenti

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.

L’attestato è accreditato o riconosciuto ufficialmente?

No. È un attestato di completamento privato, solo per le tue conoscenze. Non è riconosciuto, accreditato né approvato da alcun governo, ente di rilascio delle licenze, autorità di regolamentazione o istituto di istruzione e non sostituisce alcuna licenza, certificazione o formazione richiesta dalla legge.

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