Topic / sectie - Fire science fundamentals

6 important questions on Topic / sectie - Fire science fundamentals

What are some examples of unintentional ignition causes?

Debris burning
transport: train brakes, exhaust, catalyser
Friction: ploughing
Fireworks, wishing lanterns
aboveground powerlines

What is the predominant cause of fire?

People,
ver ylittle bit of lightining often in remote mountainous areas

How can powerlines lead to fires?

Downed powerlines
vegetation contact
wind or smoke arcing, sparks

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What are the environmental factors required for cigarette ignition?

Finely particulated fuel bed
loose fuel arrangement
fine dead fuel moisture content <14%
Temperature >26 degree (micro climate location)
Relative humidity <22%

What are the physical placement factors required for cigarette ignition?

>30% of the glowing tip in contact with fuelbed
tip oriented into wind
tip burrowed or downslope

What different kinds of crown fires are there?

Active independent of surface
passive : individual trees

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