Structural Fire Fighting1 Flashcards
1
Q
What is Pyrolysis
A
The decomposition of a substance caused by heat
2
Q
2 types of ignition sources
A
Piloted - requires a source
Spontaneous - Auto ignition temperature. If the temperature is hot enough a pilot is not required
3
Q
Four phases of Fire Progression
A
Developing Fire
Flashover
Fully developed
Decay
4
Q
Methods of heat transfer
A
Radiation
Convection
Conduction
5
Q
Signs of flashover
A
- Ventilation controlled, vented fire
- painful radiant heat
- low neutral plane
- fingers of flame in smoke
- hot surfaces
- increased rate of pyrolysis
- increased turbulence of neutral plane
6
Q
Signs of backdraught
A
- ventilation controlled, non vented
- lack of visible flame
- dirty smoke
- smoke pulsating
- air being sucked in
- indicators of extreme heat
