Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
The attending firefighters must follow the tactics and procedures as directed by the IC to ensure the safety and effectiveness of the firefighting operation. The IC’s decision has to take into consideration influencing factors such as: |
• Locating the fire • Smoke travel • Weight of attack |
|
|
At the end of the incident the cause of the fire must be investigated and firefighters must make sure the fire is fully extinguished. This will involve: |
• Damping down and turning over techniques • Cutting away |
|
|
How to locate a fire outside a building? |
• Gather all available information from eye witnesses and the premises owner. They may be able state the exact location of the fire • Consult the automatic fire alarm panel to see the location of the detector heads which have actuated • Look all around the building for signs of the fire |
|
|
How to locate a fire inside a building? |
• Feel for hot doors or walls as these are reliable indicators to the presence of fire • Characteristic odours can indicate the type of material burning and assist in locating the fire • Listen for crackling, which can indicate combustion • Look for the origins of the smoke and for the signs of heat damage such as blistering paintwork • Use the TIC to look for raised ambient temperatures, hot surfaces, and doorways. |
|
|
The volume of smoke produced depends on 3 factors: |
• The nature of the material. The more carbonaceous the material, the larger the volume of smoke given off • The amount of oxygen available. Oxygen starved fires tend to be more smoky than fires with a free supply of oxygen • The amount of time a fire has been alight |
|
|
Define Mushrooming |
Convection currents will carry the smoke vertically upwards from a fire until it meets an obstruction such as a ceiling or the underside of a lift. It then travels laterally in all directions until it meets the walls and then fills the room or enclosed space from top to bottom. |
|
|
Advantages of water as an extinguishing media |
• Cheap • Readily available • Very efficient at cooling the fire The vast majority of fires can be extinguished by applying water |
|
|
Define 'weight of attack' |
• The number of jets • Flow settings selected • Size of hose used |
|
|
The IC must consider and implement the appropriate weight of attack following an assessment of the fire compartment, including the: |
• Size and layout • Location and access • Probable fire loading; based on available information regarding contents and nature of use • The size of fire, fire development, growth and fire behaviour, such as backdraught, flashover or fire gas explosion. |
|
|
A number of incident types may require one or more 45mm hose lines as the minimum weight of attack, these can include: |
• Large or complex buildings where deeper penetration may be required • Where the fire is well established or if the compartment is large, complex or known to extend over more than one level • Compartment fires where there are high ceilings (over 5 metres) • Any premises where there are signs and symptoms of flashover or backdraught • Structural fires where the fire has breached the original compartment |
|
|
What is important about 45mm supporting jets? |
Any supporting hose lines should be at least one length longer than the initial firefighting jet. This will allow them to reach beyond, protect and if necessary rescue the initial team |
|
|
Although cutting away may be used as part of any work being carried out, there are two main reasons for cutting away parts of a building: |
• To investigate a suspected fire • To locate and extinguish an inaccessible fire |
