Chapter 7: Portable Fire Extinguishers Flashcards Preview

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Flashcards in Chapter 7: Portable Fire Extinguishers Deck (15)
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1
Q

Extinguisher Classification

A

A: GREEN TRIANGLE: ordiary combustibles
B: RED SQUARE: flammale/combust. liquids
C: BLUE CIRCLE: energized electrical equipment
D: YELLOW STAR: combustible metals
K: N/A N/A: commercial cooking

2
Q

Class A ratings

A

1A-40A:
1A= 50 pieces of (5cm x 5cm x 50 cm)

5L of water = 1A

3
Q

Class B rating

A

1B-160B

1B= .09sqm or 1 sqf of liquid at appreciable depth of 6mm.

4
Q

Class C

A

no numerical rating

dry chem, CO2, Halon and other inert gases

5
Q

Class D

A

no numerical rating
we use met-L-X @ 14kg
sodium chloride is main agent

6
Q

Class K

A

Minimum of a 40B rating
wet chemical must: completely extinguish fire in fryer, prevent re-ignition for 20 min. and reduce temp 15.6’c below ignition point, cause no splashing

7
Q

Saponification

A

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

8
Q

Tanker
Pump
ATP
carry ….

A

Back Pack: A : 4A : 60-180s: 3-9m
Dry Chem: ABC: 20A60BC: 10-25s : 2-4.5m
CO2 : BC : 10BC : 10-30s : 1-2.5m

9
Q

Rescue
Ladder
Quint
carry….

A

Dry Chem: ABC: 20A60BC: 10-25s : 2-4.5m
CO2 : BC : 10BC : 10-30s : 1-2.5m
Met-L-X : // : // : 10-25s: 2-4.5m

Met-L-X dry powder: 14kg of agent in extinguisher
Dry Chem is MONNEX: 14 kg of agent

10
Q

REACT

A
Rescue
Ensure door is closed
Activate Alarm
Call 911
Try to extinguish
11
Q

PASS

A

Pull pin
Aim
Squeeze
Sweep

12
Q

A hand held Fire Extinguisher

A

not to exceed 25kg

13
Q

4 components of a Dry chem extinguisher

A

Pressure vessel
A Valve
Pressurizing Gas
Extinguishing Agent

14
Q

100ml of 4oz of Class A foam concentrate

A

In our 20L back pack will give us 0.5%-0.6% foam solution

15
Q

Occupancy Hazard Classifications

A

Light: Class A: minimal
Ordinary: box stores…Class A&B… COSTCO
Extra Hazard:Class A&B… Production or processing plants.. DOW