TB 090 - Fire Burns Flashcards
Steam can cause full thickness burns to unprotected skin with less than __ seconds exposure
3
Tests indicate that exposure to temperatures of only ____-____ F will cause extreme pain and severe, full thickness burns to all unprotected skin
280-320
•Second Degree Burns can occur with exposure to only ____ degrees.
111
•Second Degree Burns can occur within ___ seconds of exposure to ____ degrees.
20
131
•Second Degree Burns can occur within __ second of exposure to ___ degrees.
1
158
A Firefighter caught in a flashover, just five feet inside a room, will be exposed to temperatures of _____ to _____F, and direct flame impingement for at least __ seconds
1,000 to 1,500F
2
A BTU is the amount of heat required to raise the temperature of __ pound of water __ degree fahrenheit
1
1
Water has a Latent Heat of fusion of ___ BTU’s and Latent Heat of vaporization of ___ BTU’s
143
970
__________ is one of the major causes of fire ground fatalities. It is the most dangerous stage of fire development
Flashover
There are three stages in the development of an interior fire:
1. _______ Stage
2. _______ developed Stage
3. _______ Stage
- Growth
- Fully
- Decay
Flashover occurs during the ______ _____ stage
Fully Developed
Backdraft - Oxygen content must fall to between ___% and ___%
11% to 15%
Backdraft - Explosive products of combustion are _____F to _____F and higher, well above their ignition temperature
1,000 to 1,800
Differences Between Flashover and Backdraft is the amount of
____ present
Air
_______ _________
Conditions for a smoke explosion develop before Firefighters enter or while they fight fire
in the early stages as super heated smoke particles build up and are forced into enclosed, hidden areas
Smoke Explosion
There are four construction features that present the greatest danger to Firefighters from collapse:
1. Any type of truss construction
2. Unreinforced masonry construction
3. Any cantilever construction
4. Unprotected steel construction
4
Increased used of synthetic furniture burn __ to __ times hotter and faster than ordinary combustibles.
2 to 3
These warning signs may not be apparent in buildings with large unenclosed floor or
attic spaces and ceilings ___ to __ feet above the floor or joist level
12
20
In general, provide a minimum of two ladders to every structure and __ additional ladder for every two member team on the roof.
1
