Fire Safety, First Aid and Evacuation Course (EU)：Fire classes and fire-fighting equipment

1. 第1题，共18题

   Under the European standard EN 2, what does a Class A fire involve?

   • AFlammable gases leaking from a pipe or cylinder
   • BBurning metals
   • CCooking oils and fats
   • DSolid materials such as wood and paper
   显示答案

   答案: D. Solid materials such as wood and paper

   Class A fires involve solid materials, where burning normally forms glowing embers.

2. 第2题，共18题

   Under EN 2, what does a Class B fire involve?

   • ASolid materials such as wood
   • BCooking oils and fats in a fryer
   • CLiquids or solids that turn into liquid
   • DBurning metals
   显示答案

   答案: C. Liquids or solids that turn into liquid

   Class B fires involve liquids or liquefiable solids, such as petrol or wax.

3. 第3题，共18题

   Under EN 2, what does a Class C fire involve?

   • APaper and textiles
   • BMetals
   • CGases
   • DCooking fats
   显示答案

   答案: C. Gases

   Class C fires involve gases.

4. 第4题，共18题

   Under EN 2, what does a Class D fire involve?

   • AGases
   • BMetals
   • CWood and paper
   • DLiquids
   显示答案

   答案: B. Metals

   Class D fires involve metals. If these fires are possible at your site, specialist advice is needed.

5. 第5题，共18题

   Under EN 2, what does a Class F fire involve?

   • APaper and cardboard
   • BBurning metals
   • CCooking oils or fats
   • DFlammable gases from a cylinder
   显示答案

   答案: C. Cooking oils or fats

   Class F fires involve cooking oils or fats, for example in a deep fat fryer.

6. 第6题，共18题

   Which type of extinguisher is designed for kitchen fires in deep fat fryers?

   • AWater
   • BCarbon dioxide (CO2)
   • CDry powder
   • DWet chemical
   显示答案

   答案: D. Wet chemical

   Wet chemical extinguishers are designed for Class F fires involving burning cooking oil and deep fat fryers.

7. 第7题，共18题

   A water extinguisher is mainly used on which kind of fire?

   • ABurning metal shavings
   • BBurning cooking oil in a kitchen deep fat fryer
   • CLeaking flammable gas
   • DBurning paper, wood and soft furnishings
   显示答案

   答案: D. Burning paper, wood and soft furnishings

   Water extinguishers are for Class A fires, such as paper, wood and soft furnishings.

8. 第8题，共18题

   Why must great care be taken when water is used near electrical equipment?

   • AWater conducts electricity
   • BWater turns into a flammable gas
   • CWater damages the extinguisher
   • DWater makes paper burn faster
   显示答案

   答案: A. Water conducts electricity

   Water conducts electricity, so using it near live electrical equipment or cables is dangerous.

9. 第9题，共18题

   Which extinguisher is often chosen for fires in computer equipment and electrical appliances?

   • ACarbon dioxide (CO2)
   • BWet chemical
   • CWater
   • DFoam spray from a hose reel
   显示答案

   答案: A. Carbon dioxide (CO2)

   CO2 extinguishers suit Class B fires and are suitable for computer equipment and electrical appliances.

10. 第10题，共18题

    A small fire has been put out with a CO2 extinguisher, but the material is still very hot. What is the risk?

    • AThere is no risk at all once the flames have stopped
    • BThe CO2 will make the hot material explode
    • CThe fire may start again once the gas has gone
    • DThe extinguisher will refill itself
    显示答案

    答案: C. The fire may start again once the gas has gone

    CO2 works by smothering the fire. Once the gas has gone, material that is still hot can re-ignite.

11. 第11题，共18题

    Which is a known drawback of dry powder extinguishers?

    • AThey work only on outdoor fires
    • BThey cool very little, and the powder should not be breathed in
    • CThey are filled with water, which conducts electricity to the user
    • DThey can only be used on Class F fires
    显示答案

    答案: B. They cool very little, and the powder should not be breathed in

    Dry powder does little to cool a fire, so it may re-ignite. The powder should not be inhaled and is hard to clean up.

12. 第12题，共18题

    A foam extinguisher is used on which fire classes?

    • AClass F cooking fires only
    • BClass D metal fires only
    • CClass A and Class B
    • DClass C and Class D
    显示答案

    答案: C. Class A and Class B

    Foam extinguishers are for Class A and Class B fires. The foam smothers the fire and cools flammable liquids.

13. 第13题，共18题

    Under the European standard EN 3, what colour is the body of a new portable fire extinguisher?

    • AGreen, like an escape sign
    • BYellow, with a black stripe
    • CA different full body colour for each type of agent
    • DRed, with a small zone of colour to show its type
    显示答案

    答案: D. Red, with a small zone of colour to show its type

    Under EN 3, extinguishers have a red body. UK fire and rescue service guidance says a zone of colour of 5% of the body shows the extinguishing agent.

14. 第14题，共18题

    Under Directive 92/58/EEC, which colour is used to identify fire-fighting equipment?

    • AYellow
    • BGreen
    • CRed
    • DBlue
    显示答案

    答案: C. Red

    Annex IV of Directive 92/58/EEC says the colour for identifying fire-fighting equipment is red.

15. 第15题，共18题

    What does a sign showing the location of fire-fighting equipment look like under Directive 92/58/EEC?

    • AA black pictogram on a yellow triangle
    • BA white pictogram on a blue circle
    • CA white pictogram on a green background
    • DA white pictogram on a red background
    显示答案

    答案: D. A white pictogram on a red background

    Fire-fighting signs are rectangular or square, with a white pictogram on a red background, and red covering at least 50% of the sign.

16. 第16题，共18题

    What does the Workplace Directive say about non-automatic fire-fighting equipment such as extinguishers?

    • AIt must be locked away so that it cannot be stolen
    • BIt must be easy to reach, simple to use and shown by signs
    • CIt must be hidden so that customers and visitors do not see it
    • DIt may only be kept in the manager's office
    显示答案

    答案: B. It must be easy to reach, simple to use and shown by signs

    Annex I point 5.2 says non-automatic fire-fighting equipment must be easily accessible, simple to use and indicated by signs.

17. 第17题，共18题

    A small fire starts in a waste bin. You have never been trained to use an extinguisher. What should you do?

    • ACarry the burning bin outside yourself
    • BThrow a glass of water from the kitchen on it
    • CRaise the alarm and follow your site's fire procedure
    • DPick up the nearest extinguisher and read the label first
    显示答案

    答案: C. Raise the alarm and follow your site's fire procedure

    Extinguishers are provided mainly for trained people, and employers designate trained workers for fire-fighting. Your first job is to raise the alarm and follow the procedure.

18. 第18题，共18题

    A small fire starts in a pan of cooking oil. What equipment is suitable for this?

    • AA wet mop
    • BA water extinguisher
    • CA fire blanket
    • DA paper towel
    显示答案

    答案: C. A fire blanket

    Fire blankets are suitable for small fires in containers of cooking oils or fats. Water extinguishers are meant for Class A fires such as paper and wood.

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