BA Week 1 Flashcards
All info from PowerPoints in week 1 BA
What are the stages of fire development?
Ignition
Growth
Fully developed
Decay
At what stage does flashover occur?
At the end of growth stage
What effects fire development?
Position of fire in room
Ceiling height
Smoke layer
Ventilation
What are the 3 sides of the fire triangle?
Oxygen
Fuel
Heat
What is a passive agent?
Give an example of a good passive agent
Absorbs heat from a fire
Water
What is pyrolysis?
Thermal decomposition of a substance by heat
Explain the limits of flammability
Fuel can only burn if composition is within certain limits.
The lower explosive limit is the lowest concentration of fuel that will just support a flame.
The upper explosive limit is the highest concentration of fuel that will support a flame
Give two examples of non-flammable gases
C02 and water vapor
What’s the difference between direct and indirect spray patterns?
Direct - narrow jet sprayed at seat of the fire
Indirect - spray aimed at seat of the fire
When should you complete a gauge check?
Every 3-5 minutes New compartment Locate causality Stress Landmark Change of level
What are the 3 options for a BA team leader when searching a compartment?
Stay
Advance
Withdraw
Define ideal mixture
Concentration of gas is exactly right in relation to the amount of 02 in air for combustion
When should emergency BA team deployment be considered?
BA wearer fails to return by time of the whistle Activation of a distress signal Indications of a BA wearer in distress Prolonged breakdown in communication Requested by a BA wearer
If you’re a trapped BA wearer and get entrapped what should you do?
Inform ECO and pass vital communications Relax Breath calmly Do not purge Limit talking with team Operate ADSU
When control are informed of a BA emergency what do they do?
Send 1 extra appliance
2 FDS Officers
1 ambulance
Information division officer And duty principle officer