RFT 003: Compartment Firefighting

Question 1

What is the definition of a compartment?

Answer 1

An enclosed space within a structure

Question 2

What is the expansion rate of water turning to steam?

Answer 2

1700:1

Question 3

Water turns to steam at what temperature?

Answer 3

100°C

Question 4

Name the three types of water application?

Answer 4

Indirect
Direct
Gas cooling

Question 5

What is indirect water application?

Branch settings and effects

Answer 5

Water is directed from outside the compartment
Medium spray aimed above and around the fire
Cools and dilutes the fire gases
Large quantities of steam are produced, smothering the fire and lowering the neutral plane

Question 6

What is direct water application?

Branch settings and effects

Answer 6

Water is directly applied to the seat of the fire
Solid jet or narrow spray
Extinguishes fire, but with potential for excessive water damage

Question 7

What are the three types of pulse that can be used to cool fire gases, and extinguish the fire?

Answer 7

Short pulse - provides a safe zone
Long pulse - extinguishes flaming combustion in the overpressure
Painting - extinguishes the fire, small trickles of water

Question 8

When should teams decide to withdraw?

Five answers

Answer 8

Rising temperatures
Unable to extinguish the flames in the gas layer
Descending neutral plane
Increased fire development
Reduced visibility

Question 9

1mm droplets from water spray will cool a tract of how many mm?

Answer 9

3mm

Question 10

What distance should hose management crews keep behind the firefighting crew?

Answer 10

One compartment behind at all time, to remain in audible contact with them if possible

Hose is cooled or laid in loose bights