Fire quiz

Question 1

4 components of fire tetrahedron

Answer 1

fuel, heat, oxygen, chemical reaction

Question 2

define flashpoint

Answer 2

the lowest temperature that a combustible liquid or solid will give off sufficent vapours to ignite momentarily when a heat source is applied

Question 2

define ignition temperature

Answer 2

the minimum temperature that a substance must be heated to in the presence of oxygen in order to cause continuous, self-sustained combustion independent of an external heat source

Question 3

4 methods of heat transfer

Answer 3

conduction, convection, radiation, direct flame contact

Question 4

four main classes of fire

Answer 4

class a: solid fuel- wood, cardboard, paper
class b: flammable liquids- gasoline, paints, solvents
class c: charged electrical- short circuits, overloaded circuits
class d: metal fuels- magnesium, titanium, potassium
class k: combustible cooking vegetables

Question 5

4 methods of extinguishing fire

Answer 5

heat removal (cooling), oxygen removal (smothering), remvoal of fuel, flame interuption

Question 6

which first aid extinguisher used to fight “a” fire

Answer 6

pressurized air-water

Question 7

which classes of fire would you attack with dry chemical powder extingusher

Answer 7

B & C

Question 8

method of extinguishment does a co2 employ

Answer 8

oxygen displacement/smothering

Question 9

what percentage setting for inline euductor

Answer 9

3%

Question 10

fitted system provides the most effective means of protecting compartments where explosives are stored

Answer 10

water flood & spray system

Question 11

duties of fire sentry

Answer 11

prevent re-flash
preserve evidence
restrict access to space

Question 11

procedures for establishing fire boundary

Answer 11

1. rig, charge and test hose
2. check for heat using back of hand
3. apply cooling spray
4. inform ood when set
5. remove flammable material
6. complete total confinement
7. hose remains outside the space for electrical spaces

Question 12

warning whistle psi of drager gear

Answer 12

1200 psi

Question 12

operating duration of EEBD

Answer 12

15 mins

Question 13

purpose of twin agent unit

Answer 13

self contained system only used for helo crash rescue, AFFF & potassium bicarbonate

Question 14

5 items to include in report to RRT by discoverer of fire

Answer 14

types/class of fire
location of fire in the space
size of fire
casualties seen in space
actions taken

Question 15

3 sources of heat energy

Answer 15

chemical- from chemical reaction
mechanical- from friction & compression
electrical- from overloaded/damaged or degraded cables

Question 16

co2 extinguisher

Answer 16

“c” & small “b”
expells co2 under pressure

Question 17

k guard

Answer 17

“a” & “k”
nitrogen
potassium acetate

Question 18

air water

Answer 18

“a”
air
water

Question 19

dry chemical

Answer 19

“b” & “c”
nitrogen
potassium bicarbonate

Question 20

how does AFFF extinguish a fire

Answer 20

forms a thin film on the surface of fuel & prevents vapours from reigniting

Question 21

from what fitted system does the ramfan 2000 get its power from

Answer 21

fire main through charged hose

Question 22

types of compartments to be protected by a fitted AFFF system

Answer 22

engine room, machinery room, hangar, motor room