Fire Officer Tactics: Engine Company Ops (Ch 3) Flashcards
Elements needed for successful indirect attack
- High heat throughout area
- Limited ventilation of the fire area
- Point on perimeter for small opening (30º fog)
- No endangered occupants
- Limited size of potential fire area
Advantages of indirect attack
- Reduce FF exposure to backdraft
- Can extinguish fires in areas where high heat denies entry.
- Limited crew can extinguish disproportionately large fire.
- Uses less water
- May create less water damage.
Disadvantages of indirect attack
- Can’t be used in occupied building
- Ventilation openings weaken effect
- Too small volume can push fire ahead of steam
- Can’t view interior layout first.
- Can increase water damage if used in wrong circumstance.
Three possible modes on arrival
- Offensive attack
- Defensive attack
- Take no action
Factors of an offensive attack
- Sufficient resources available to perform all need tasks
- Threat to exposures is minimal
- People to be rescued
- Begin suppression as soon as possible
- Place first hoseline to cover worst case before stretching additional lines
- When attack stalled, increase water flow, ventilation, or both, if unsuccessful change tactics
Factors of defensive attack
- Effective offensive attack not mounted within 20 min
- No civilian life hazard
- Prevent fire from extending to exposures
- Partial collapses
- Consider total involvement of the structure and the impacts of that scenario
Factors in taking no action
- Conditions pose undue threat to FF
- Potential BLEVE
- Fires in warehouses with poisions or pesticides (runoff)
When human life is at stake…
An offensive attack is mandatory
Begin suppression…
as soon as possible
Get the first hoseline in operation to cover…
the worst case before stretching additional lines
When an attack is stalled…
Increase ventilation, water flow, or both. If unsuccessful, change tactics.
When an effective offensive attack isn’t possible or hasn’t succeeded in _____…
20 minutes, prepare defensive positions.
When forced into a defensive mode, consider…
the possible effects of total involvement of the structure.