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Fire > Chapter 7 > Flashcards

Chapter 7 Flashcards

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1
Q

List the symbol, colour and materials for a class D extinguisher

A
  • Star
  • Yellow
  • Combustible Metals (Magnesium, Sodium, Lithium, Potassium, Titanium, Zirconium)
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2
Q

List the symbol, colour and materials for Class B extinguishers

A
  • Red
  • Square
  • Greases, Oils, Solvents, Flammable and Combustible liquids
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3
Q

List the symbol, colour, and materials for a Class A extinguisher

A
  • Triangle
  • Green
  • Wood, Cloth, Paper, Rubber, Plastics
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4
Q

List the symbo, colour, and materials for a class C extinguisher

A
  • Circle
  • Blue
  • Fires involving energized electrical equipment
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5
Q

List the symbol, colour, and materials for a class K extinguisher

A
  • No symbol
  • No colour
  • Commercial cooking units involving vegetable or animal oils and fats
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6
Q

Define Saponofication

A

A reaction that emulsifies the oil to form a type of soap that floats on teh surface of the oil & prevents re-ignition of the oil vapors

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7
Q

What colour and symbol correlate to a class K extinguisher

A

No colour

No symbol

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8
Q

An expert can extinguish how many times more than a fire extinguisher’s rating?

A

2.5x

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9
Q

How much fuel with a B-1 extinguisher?

10-B?

A
  • 1-B
    • 0.09sqm (1sqft)
  • 10-B
    • 0.9sqm (10sqft)
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10
Q

What is the PASS for fire extinguishers?

A

P- Pull

A- Aim

S- Squeeze

S- Sweep

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11
Q

What fuels compose a Class B fire?

A

Greases, Oils, Solvents, Flammable and Combustible liquids

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12
Q

What materials compose a Class A fire

A

Wood, Cloth, Paper, Plasitcs, Rubber

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13
Q

What classifies a Class C fire?

A

Fires involving energized electrical equipment

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14
Q

What fuels burn in Class D fires?

A

Flammable and combustible metals

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15
Q

How many and what size of wood cribbing is used to test Class 1- A fires?

A

50 pieces of 50 cm x 5 cm x 5 cm

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16
Q

What hazard is present when using a CO2 fire extinguisher

A

Re- Ignition

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17
Q

What are the CO2 fire extinguishers located.

A

Pump

Rescue

Ladder

Tankers

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18
Q

How much extinguishing agent can a pump/ tank backpack water extinguisher carry?

A

~20l

Can add foam to mixture 0.5-0.6% foam

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19
Q

How much does Metal X extinguishesr weigh?

A

14 kg

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20
Q

What is the discharge time and distance of

Metal X extinguishers

A
  • 10-25 Sec
  • 2 - 4.5m
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21
Q

What are the extinguishers found on EFRS Ladders

A
  • ABC
    • 20A-60BC
    • Dry Chemical
  • BC
    • 10BC
    • CO2
  • D
    • Metal X (quints)
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22
Q

What is the discharge Time and Distance of CO2 10BC extinguishers

A
  • 10-30Sec
  • 1-2.5m
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23
Q

What exinguishers are carried on EFRS Rescues

A
  • ABC
    • 20A60BC
    • Dry chemical
  • BC
    • 10BC
    • CO2
  • D
    • Metal X
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24
Q

What is the Discharge Time and Distance of Dry Chamical extinguishers (20A60BC)

A
  • 10-25Sec
  • 2-4.5m
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25
What is the Discharge time and Distance of Backpack Pump 4A
* 60-180s * 3-9m
26
Which extinguishers are carried on EFRS Pump/Tanker/ATP?
* ABC * 20A60BC * Dry Chemical * BC * 10BC * CO2 * A * 4A * Backpack Pump- Water
27
What criteria must class K extinguishrers meet?
* Completely extinguish the fire in the deep fryer * Prevent re-ignition of the vegetable oil for 20 min or reduce the oil temperature at least 15.6 deg C below auto-ignition temperature * Cause no splashing of flaming oil outside the fryer
28
What depth is "appreciable"
\>/= 6mm
29
Class B fire extinguishers typical Size range?
1B- 160B
30
What types of extinguishing agents are used for Class A fires
* Water * Foam concentrate mix * Dry chemical * Halon
31
Most Class A pertable fire extinguishers are rated
1A- 40A
32
What is the fire extinguisher distribution for an: Extra Hazard Occupancy
4 units every 23m
33
What is the fire extinguisher distribution for an ordinary Hazard occupancy
2 units every 23m
34
What ratings are given to Class K fire extinguishers
None given
35
What action does the Sodium Chloride provide as an extinguishing agent?
Heat Sink Forms oxygen- excluding crust
36
What other components make up a Class D extinguishing agent (Sodium cloride Primary agent)
* Thermoplastic powder * Waterproofing (metal stearates) * Anti- caking materials (tricalcium phosphate)
37
Which combustible metals use Sodium Chloride as an extinguishing agent?
* Magnesium * Potassium * Sodium * Titanium * Sodium Potassium alloys Met L-X, Super D extinguishing agents
38
Why must the Class D extinguisher agents be compatible with the metal burning?
Not all extinguishing agents are compatable with all combustible metals
39
What ratings are given to Class C fire extinguishers
No testing or numerical rating
40
What ratings are given to Class D fire extinguishers
No numerical ratings
41
What extinguishing agents are used in Class C extinguishers
* Dry chemical * CO2 * Halon * Inert Gases (ie: argon)
42
What extinguishing agents are used in Class B extinguishers
* Dry chemicals * CO2 * Halon * Aqueous FIlm Forming Foams (AFFF) * Film Forming Flouroproteins (FFFP)
43
How often must portable fire extinguishers found in apartments. hi-rises, commercial, and retail outlets (etc) be inspected, servicesd and certified?
annually
44
How often must food service industry range extinguisher units be inspected, serviced, and certified
6 months
45
What safety factors must be met when using a dry powder Fire extinguisher
* REACT * Ensure a safe approach and safe egress * Ensure the power source energizing the fire is disconnected * Ensure the dry powder is compatible with the burning metal * PASS to apply the dry powder onto the burning material * Dry powder can be scooped or shovelled onto the fire * Watch for burn through of the dry powder * Range is limited ~2m -4.5m * Discharge time 10-25s * Avoid inhaling the dry chemical dust * Back away from the fire
46
What components make up an assessment of the situation, prior to using a portable fire extinguisher
* Size up teh Class & Volume of burning material * Select a portable fire extinguisher of the correct class and rating to meet the demands of the fire * Evaluate the wind or internal environment to maintain a safe access route to the fire * Maintain a route for safe egress from the fire room * Use the PASS system for operating the extinguisher
47
What operational and safety factors must be used with CO2 fire extinguishers
* REACT * Ensure a safe approach and egress * Ensure the power source energizing the fire is disconnected * PASS to apply the CO2 onto the burning material * Effectiveness is limited in windy conditions * Effective when used in confined spaces * Range is limited ~1-2.5m * Discharge time 10-30s * CO2 gas temperature can reach -100deg C * Static electricity will build up in the horn during discharge- ensure you hold the grounded hose when operating * Ensure exposed flesh is not in contact with the discharge horn * Back away from the fire
48
What safety and operational factors must be used when operating a Dry Chemical fire extinguisher
* REACT * Ensure a safe approach and egress * Ensure the power source energizing the fire is disconnected * PASS to apply the dry chemical onto the burning material * Effectiveness is limited in windy conditions * Range is limited 2-4.5m Discharge ~10-25s * Avoid inhaling dry chemical dust * Back away from fire
49
Backpack pump-tank water extinguisher checks include:
* The appropriate extinguisher in its designated location * Signs of physical damage to the pack straps or tank bladder * Signs of cracking on the fill cap rubber seal * Signs of cracking on hoses or obstructions to nozzles * Effectiveness of hand pump
50
What should Fire extinguishers be checked for
* Proper extinguisher in designated location * Extinguisher is fully charged * Examine for broken witness wire or other signs of previous use * Signs of tank corrosion or other physical damage * Signs of cracking on hoses, or obstructions to nozzles * Date of last hydrostatic test of extinguisher shell * Date of last inspection
51
When should apparatus extinguishers be inspected
During regular vehicle inventory checks
52
What class ratings to Halon fire extinguishers carry
Class A-B-C \*Most useful for class C
53
Which extinguishing agent is used by EFRD for Class D fires
Metal-X
54
Where are Dry chemical extinguishers located (which apparatus)
Pumps Tankesr Ladders Rescue ATP
55
What size ranges do portable Dry Chemical extinguishers come in?
0.5-14kg \*will not exceed 25kg for portable
56
Where are Dry Powder extinguishers located in EFRS (which apparatus)
Rescue Quints
57
List the common dry chemical extinguishing agents
* Multi purpose triplex chemical mono-ammonium phosphate (ABC) * Sodium bicarbonate * Potassium bicarbonate * Potassium Chloride
58
What two classes are Dry Chemical rated for?
* Ordinary * Class B & C * Multipurpose * Class A- B- C
59
Explain the basic fire extinguisher assessment of a situation
* Size up the calss and volume of material burning * Select a portable fire extinguisher of the proper class and rating * Evaluate the wind or internal environment * Maintain a safe access route * Maintain a safe egress route * Use the PASS system for fire extinguisher effectively
60
Explain the REACT mnemonic
* Rescue * Initial evacuation of the people in the room containing the fire * Ensure Door is closed * after evac. close the doors to reduce the risk for fire spread and to extend tenable atmosphere in other rooms * Activate Alarm * activate the building alarm, or send some one to notify others inside * Call 911 * activate other emergency resources in the event the fire extinguisher cannot contain the fire * Try to extinguish * Return to fire room and attempt to use the apporopriate extinguisher to control the fire
61
What four components make up a Dry chemical fire extinguisher
* Pressure vessel * Valve * Pressurizing gas * Extinguishing agent
62

Fire (15 decks)

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