General Flashcards
What’s the minimum weight of attack for a high rise fire?
45mm jet
Fire can travel internally but more commonly occurs externally when fire breaks out of windows this may lead to rapid spread to other compartments and floors. This is known as?
Coanda effect
Wind speeds are likely to increase with the height of the building and can be affected by the position of any nearby buildings. What effect can be created by high wind speeds for the products of the fire from the compartment sometimes in unpredictable directions resulting in rapid fire spread
A blowtorch type affect
Building regulations require all buildings over what height to make provision for firefighting
18 m for dry risers 60 m Wet wet risers
A dry rising main can deliver how much water per minute
1500 L of water per minute
Where should the Fire lift remain during a high-rise fire
At the established bridgehead so that rescued persons can be quickly brought to ground floor level
Where should the Bridgehead be located
Two floors below the fire floor unless planning arrangements have determined a more appropriate position
Where should the bridgehead be established two floors below the fire
In a lobby and not a corridor
What is the minimum rank that can take charge of the Bridgehead
Crew manager
As the water supply is being secured what is the minimum amount of personnel that should be dispatched to the bridgehead
4 people consisting of a Crew Manager 2 BA wearers and an entry control officer
What equipment must be taken to the bridgehead
Two length of 45mm One BA board Two BA sets First aid and resuscitation equipment Breaking in gear Thermal image camera FIRE bag
What should the emergency team consist of for a high-rise incident
The same size as the largest committed crew and rigged to at least the same level of protection
All personnel proceeding beyond the bridgehead should wear BA except when
In exceptional circumstances where the crew safety can be established beyond reasonable doubt
What should the Bridgehead commander do before committing any BA teams
Inform the officer in charge
Where should the initial BA teams charge their branch from where possible
The floor below the fire if this is unavailable the nearest available outlet below should be used
Where should the covering jet team hose be plugged into
The fire floor and if this is unavailable the next outlet below the fire floor
How long should the hose be for the covering jet team
One hose length longer than the attack jet in order to allow rescue of the committed crew
If signs and symptoms or conditions that may lead to backdraught flashover or other abnormal fire development what should be in place
A covering jet and BA team must be present before search and rescue firefighting teams are committed
Any building ventilation system operating on arrival should be left switched on and to when
The incident commander is satisfied as a result of discussion with on-site engineer or senior fire safety officer that switching off the system will not cause an escalation of the incident
When will a senior fire safety officer attend a high-rise incident
A senior fire safety officer will be informed at all 4 pump fires and will attend all 6 pump fires And can be requested when ever specialist advice is required by the incident commander
Where should the incident Commander remain during a basement fire
At surface level unless preplanning arrangements have located a more appropriate location such as the designated fire control centre
What must be considered prior to committing BA teams to a basement fire
Ventilation of the basement
Who should the incident commander request to gain advice before operating ventilation or smoke extraction systems
A senior fire safety officer
BA teams committed to basement fires should have a sufficient weight of attack consisting of what
45 mm jet