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Heat and Cold Stress Course 2026

This course is for security guards and other workers in Canada who work outdoors or in very hot or cold places. It covers how heat and cold affect the body, the warning signs of heat illness and cold injury, first steps to take and how to prevent harm. It is background knowledge only and does not replace a first aid course or your employer's heat and cold plans.

  • Cursus
  • Canada
  • 25 vragen
  • Gecontroleerd op 13 oktober 2026

Kort antwoord

Deze gratis cursus heeft ongeveer 25 minuten lessen en een toets van 25 vragen. Haal 80% of meer om een bewijs van deelname te downloaden (privé, niet geaccrediteerd). Gecontroleerd aan de hand van officiële bronnen op 13 oktober 2026.

Begin met de lessenHeat and Cold Stress Course: Lessons: ongeveer 25 minuten leestijd. Elke testvraag wordt in de lessen behandeld.

Wat je leert

  • Explain heat stress, humidex and wind chill in plain terms
  • Recognize the signs of heat exhaustion and heat stroke
  • Take the right first steps for heat stroke and hypothermia
  • Prevent heat stress with water, acclimatization and planning
  • Recognize frostnip, frostbite and trench foot
  • Dress in layers and plan warm-up breaks for cold work

Haal 80% of meer om je certificaat te downloaden.

  1. Vraag 1 van 25

    What is a normal core body temperature for a healthy person?
    Toon antwoord

    Antwoord: A. About 37°C

    CCOHS says the body normally keeps its core temperature near 37°C. A change of more than 1°C signals a problem.

  2. Vraag 2 van 25

    In workplace safety, what does "heat stress" mean?
    Toon antwoord

    Antwoord: B. The total heat load on a worker from work, surroundings and clothing

    CCOHS describes heat stress as the overall heat load from metabolic heat, environmental factors and clothing.

  3. Vraag 3 van 25

    What does the humidex tell you?
    Toon antwoord

    Antwoord: D. How hot it feels when heat and humidity combine

    Humidex estimates how hot people feel when warm temperatures and humidity combine, much like wind chill does for cold.

  4. Vraag 4 van 25

    According to CCOHS, what does a humidex of 46 or higher mean?
    Toon antwoord

    Antwoord: B. Dangerous; heat stroke possible

    CCOHS rates a humidex of 46 and over as dangerous, with heat stroke possible.

  5. Vraag 5 van 25

    Ontario's heat stress guidance points to a general duty in the OHS Act. What does that duty require of employers?
    Toon antwoord

    Antwoord: A. To take every reasonable precaution to protect workers

    Ontario's guidance says employers must take every reasonable precaution in the circumstances to protect workers, which may include protection from heat stress.

  6. Vraag 6 van 25

    Under BC's OHS Regulation, what must an employer do where workers may face heat stress?
    Toon antwoord

    Antwoord: C. Do a heat stress assessment and make an exposure control plan

    Section 7.29 of BC's OHS Regulation requires a heat stress assessment and a heat stress exposure control plan.

  7. Vraag 7 van 25

    A worker has sharp muscle pains after sweating heavily on a hot day. Which heat illness is most likely?
    Toon antwoord

    Antwoord: A. Heat cramps

    CCOHS says heat cramps are caused by a salt imbalance from heavy sweating. Move to a cool area and drink fluids.

  8. Vraag 8 van 25

    Which set of signs best fits heat exhaustion?
    Toon antwoord

    Antwoord: B. Heavy sweating, pale moist skin, nausea and thirst

    CCOHS lists heavy sweating, weakness, dizziness, nausea, headache, thirst and pale, cool, moist skin as signs of heat exhaustion.

  9. Vraag 9 van 25

    A guard on a hot site becomes confused and starts acting strangely. What should you do first?
    Toon antwoord

    Antwoord: C. Call 911, then start cooling them right away

    Confusion and odd behaviour in the heat point to heat stroke, a medical emergency. Call 911 and cool the person while you wait.

  10. Vraag 10 van 25

    A worker who was doing hard physical work collapses in the heat but is still sweating. Can it be heat stroke?
    Toon antwoord

    Antwoord: B. Yes, sweating does not rule out heat stroke

    CCOHS notes that exertional heat stroke, after hard work or exercise, often comes with sweating, so sweat does not rule it out.

  11. Vraag 11 van 25

    While waiting for paramedics for a person with heat stroke, where should you put cold, wet cloths or ice?
    Toon antwoord

    Antwoord: A. Head, neck, armpits and groin

    CCOHS first aid for heat stroke includes cold, wet cloths or ice on the head, neck, armpits and groin, after calling 911.

  12. Vraag 12 van 25

    How much water does CCOHS suggest a worker drink in hot conditions?
    Toon antwoord

    Antwoord: D. About 250 mL every 20 minutes

    CCOHS suggests about one cup (250 mL) every 20 minutes, even without thirst, and no more than 1.5 litres an hour.

  13. Vraag 13 van 25

    In hot work, what does "acclimatization" mean?
    Toon antwoord

    Antwoord: A. The body adjusting to heat over several days

    Acclimatization is the set of changes in the body after several days of heat exposure that help it cope with heat.

  14. Vraag 14 van 25

    CCOHS suggests a new worker in a hot job start at what level of heat exposure on day 1?
    Toon antwoord

    Antwoord: D. No more than 20% of normal

    CCOHS suggests no more than 20% exposure on day 1, adding no more than 20% on each extra day.

  15. Vraag 15 van 25

    Ontario's guidance says a worker who has been away for how long needs time to re-adjust to heat?
    Toon antwoord

    Antwoord: C. 9 days or more

    Ontario's heat stress guidance says workers returning after being ill or away for 9 or more days need to re-adjust to the heat gradually.

  16. Vraag 16 van 25

    When is the best time to schedule heavy outdoor tasks on a hot summer day?
    Toon antwoord

    Antwoord: D. In the cooler morning or evening

    CCOHS and Ontario both advise moving strenuous work to cooler times of the day.

  17. Vraag 17 van 25

    At what core body temperature does hypothermia begin?
    Toon antwoord

    Antwoord: D. Below 35°C

    CCOHS says hypothermia happens when the core body temperature falls below 35°C.

  18. Vraag 18 van 25

    Which is a safe way to help a person with hypothermia while waiting for help?
    Toon antwoord

    Antwoord: C. Warm their chest, armpits and groin with blankets

    CCOHS says to handle the person gently, warm the upper body such as the chest, armpits and groin, not rub the skin and not rewarm too quickly with a hot bath.

  19. Vraag 19 van 25

    Frostnip is best described as what?
    Toon antwoord

    Antwoord: D. A warning that frostbite is beginning

    CCOHS calls frostnip the mildest freezing injury and a warning that frostbite is beginning.

  20. Vraag 20 van 25

    A co-worker's frostbitten fingers could freeze again before you reach shelter. What should you do?
    Toon antwoord

    Antwoord: C. Do not thaw them until refreezing is no longer a risk

    CCOHS says do not thaw a frostbitten area if it may freeze again, do not rewarm it on site, and never rub it or apply snow.

  21. Vraag 21 van 25

    Trench (immersion) foot can happen at temperatures as high as about what?
    Toon antwoord

    Antwoord: B. 15.5°C

    CCOHS says trench foot can happen at temperatures as high as 15.5°C if the feet stay wet.

  22. Vraag 22 van 25

    Why is cotton not a good layer next to the skin for cold work?
    Toon antwoord

    Antwoord: D. It gets damp quickly and stops keeping you warm

    CCOHS does not recommend cotton because it gets damp quickly. Wool and synthetic fibres keep their insulation when wet.

  23. Vraag 23 van 25

    Below what temperature does CCOHS recommend mittens instead of gloves?
    Toon antwoord

    Antwoord: B. Below -17°C

    CCOHS recommends gloves for light work below 4°C and moderate work below -7°C, and mittens below -17°C.

  24. Vraag 24 van 25

    In BC, a nearby heated shelter must be available when the equivalent chill temperature drops below what?
    Toon antwoord

    Antwoord: D. -7°C

    Section 7.36 of BC's OHS Regulation requires a nearby heated shelter when the equivalent chill temperature is below -7°C.

  25. Vraag 25 van 25

    Why should workers avoid alcohol when working in the cold?
    Toon antwoord

    Antwoord: B. It gives a false feeling of warmth

    CCOHS says alcohol creates a false sense of warmth and increases the risk of cold injury.

Wat je moet weten voor het examen

  • Heat stroke is a medical emergency. Body temperature is often above 40°C. Call 911 and start cooling the person.
  • CCOHS suggests drinking about 250 mL of water every 20 minutes in the heat, even if you are not thirsty.
  • Hypothermia begins when core body temperature falls below 35°C.
  • BC requires heat and cold stress assessments and control plans where there is a risk (OHS Regulation ss. 7.29 and 7.34).
  • Ontario's heat stress guidance says employers must take every reasonable precaution to protect workers, which may include protection from heat stress.

Veelgestelde vragen

What is the difference between heat exhaustion and heat stroke?

Heat exhaustion causes heavy sweating, weakness, nausea and pale, moist skin. Heat stroke is more serious: the person may be confused, collapse or have a seizure. Heat stroke is a medical emergency, so call 911.

How do I prevent frostbite on a winter patrol?

Dress in layers, cover your ears, wear mittens in deep cold, keep clothing dry and take warm-up breaks. Never ignore numbness, which is often the first sign.

Does this course count as first aid training?

No. It is background knowledge only. First aid for heat stroke and hypothermia is taught in a first aid course, and your province's OHS rules decide what first aid training your workplace needs.

Is there a temperature at which work must stop in Canada?

There is no single national cut-off. Each province and territory sets its own rules. For example, BC uses assessments and control plans, while Ontario points to the employer's duty to take every reasonable precaution.

Is het certificaat geaccrediteerd of officieel erkend?

Nee. Het is een privé bewijs van deelname, alleen voor je kennis. Het is niet erkend, geaccrediteerd of goedgekeurd door een overheid, vergunningsinstantie, toezichthouder of onderwijsinstelling, en het vervangt geen wettelijk verplichte vergunning, certificering of opleiding.

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