07 - Portable Extinguishers

Question 1

1 class A rating in L of water

Answer 1

1A = 1 1/4 Gallons

Question 2

1A extinguisher rating in pieces of wood

Answer 2

50 pieces of 5 x 5 x 50 cm boards

Question 3

1B extinguisher rating

Answer 3

1 square foot of fuels 6 mm deep

Question 4

principle retardant in class d extinguisher

Answer 4

Sodium chloride

Question 5

R.E.A.C.T. in term to extinguishers

Answer 5

Rescue
Ensure door is closed
Activate alarm
Call 911
Try to extinguish

Question 6

How many L does a pisspack hold?
How much class A foam should be added?

Answer 6

20 L
100 mL

Question 7

Process that happens when putting out a class K fire

Answer 7

Saponification

Question 8

Describe the class and rating of the CO2 extinguisher carried on EFD units.

Answer 8

10BC

Question 9

Describe the class and rating of the dry chemical extinguisher carried on EFD units.

Answer 9

10A80BC

Question 10

How much dry powder extinguishing agent is carried in the extinguishers on EFD
rescue units and what material will it extinguish?

Answer 10

14 kg of dry powder used of burning metals of sodium, potassium, sodium/potassium
alloys, or magnesium.

Question 11

When operating a dry powder fire extinguisher what operation and safety factors must
be used by the operator?

Answer 11

REACT
Ensure a safe approach (back to wind) and a 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 shoveled onto the fire.
Ensure the powder completely covers the metal
Watch for burn through of the dry powder.
Range is limited ~2 to 4.5 meters and discharge time is ~ 10-25 seconds.
Avoid inhaling dry chemical dust.
Back away from the fire

Question 12

List the colour and symbol for each class of portable extinguishers

Answer 12

Class A - Green Triangle
Class B - Red Square
Class C - Blue Circle
Class D - Yellow Star
Class K - Black Haxagon

Question 13

Describe the class and rating of the CO2 ext. carried on EFRS units

Answer 13

10BC

Question 14

What is the discharge time and distacnce for CO2 extinguishers

Answer 14

2 - 4.5m
10-25 seconds

Question 15

What is the discharge time and distance for a dry chemical extinguisher carried on an
EFRS tanker unit?

Answer 15

~2 to 4.5 meters and discharge time are ~ 10-25 seconds.