INVOLVED-SM-High rise Flashcards
Equipment needed at the bridgehead as a min?
2 x branches 45mm for both attack and covering jets BAECB 2 x sets IEC pack Long line Breaking in gear TIC Keys/codes Plans
You can, if needs be, set up a staging area the floor below the bridgehead.
Three groups of hazards for high rise?
1 - Building height and design
2 - Fire behaviour and development
3 - Firefighting a rescue operations
HR
When glass and curtain walling falls from height it’s called?
Comms blindspots may exist with high-rise
The operation of fire suppression/total flooding systems may result in______?
Planing
Oxygen deficient or irrespirable atmosphere
Wind speeds are likely to increase with height, at high rise this may result in_____?
What may increase fire spread throughout the building?
Coanda effect
The stack effect.
As smoke rises _____ may occur..
Stratification.
Building regs require all buildings over ___ in height to make provisions for firefighting.
Those is excess of ___ require wet systems.
The basic facilities within these buildings will include.
18m
60m - 50m as of 2006
Firefighting shaft
Dry/wet rising main
Fire lift
At a high rise incident with tow stairwells, what might you use them for?
How much water can a DRM deliver?
‘Attack’ and ‘Evacuation’ stairwells
1500 litres/per minute
HR
When in operation, is it ok to turn a sprinkler system off in order to supply water for fire services branches?
Not normally no.
Not designated lifts should not be used for FF operations at a HR incident.
Crews must exit a fire lift __ floors below where the fire is believed to be.
2
The fire lift should remain at the bridgehead to that people can be quickly brought down.
Where should a bridgehead be established?
How many personnel go up?
How long should the second jet be?
Two floors below fire floor… .Also in a firefighting lobby and not a corridor.
Min of 4 - CM, 2xBA & ECO.
One length longer than the ‘attack’ jet. The covering jet can be supplied from the fire floor.
High rise
If signs of backdraft, flash hover etc are present what must happen prior to committing the first BA crew?
The IC should follow the plan devised by_____?
A covering jet and BA team must be present before committing the S and R team.
The occupiers fire RA
What should the IC consider prior to ventilation at a high rise fire?
1 - And adverse affects on fire developments, backdraft/flashover.
2 - The impact that wind may have if windows or doors are open or should fail.
3 - The need to withdraw personnel.
When can you send high rise procedure implemented?
If signs and symptoms of backdraught etc are present what must be in place prior to a BA team being committed into the fire compartment?
A. Risk assessed the BH
B. Access and egress to and from BH is secured and maintained
C. BH is established with two charged jets deployed (in the correct manner)
A covering jet and BA team
Can FFs be committed above the BH without BA?
If not affected by smoke or fire and the IC has confirmed that the buildings construction and any fire engineered solutions have not been compromised - then yes.
Teams must maintain contact with BH and a safety officer must be deployed in the stairwell and be in contact with other safety officers.
What could you use as an evacuation plan?
Can the IC change the advice being given to FSG callers?
The evacuation plan devised as part of the occupier’s fire risk assessment - unless the fire dictates otherwise.
Yes in liaison with the officer in charge at control (who will be needed for agreement)
What do you do with building ventilation systems that are operating on arrival?
Should be left switched on until the IC is satisfied, as a result of discussion with an on/site engineer or FSO that switching it off will not cause an escalation to the fire - consider covering jets
What should you identify prior to operating any ventilation or heating systems or undertaking ventilation
The path that fire, heat and smoke will follow to escape to open air or other compartment in the building
Any adverse affect on fire development - flashover etc
Adverse affect on evacuation
Impact wind may have if windows or doors are opened prematurely
When is a FSO informed?
What should you take into account when setting up a cordon?
All four pump fires, will attend five and above..
Size, height and construction of building
What must a BA team do if radio comms and telemetry are lost?
What should be checked prior to handing the building over to the responsible person?
When conducting a 72d crews should check there is parking within a certain distance of rising main outlets..name that distance?
Withdraw
Fire protection and structural safety should be assessed to ensure it’s not been compromised
18m
Who would you inform and subsequently report of any building defects found?
Inform building owner of defects or safety issues concerning FF facilities and report to RMC as an alleged fire risk. FSO will be informed and determine the appropriate action
Where are detailed recommendations kept on the provision of firefighting shafts within buildings?
Capacity of FF lift…?
Are they the same as fireman’s lifts…? If not why not?
BS 9999
8 persons 850kg
No - this is a normal lift fitted with a ‘fireman’s switch’ - installed pre 1980s, no structural protection, protected services, duplicate power supplies, functionality or overall resilience that the more modern ones have.
Minimum requirements when assessing whether a lift should be used by FFs:
Primary and secondary power supplies Water protection measures FF recall switch FF in car controls FF comms system Floor indicators
Where should riser outlets be located?
British standard requires isolation valves at intervals of what?
An option if the wet rising main fails?
Protected lobby or approach stairway
Not exceeding 10m
Identify whether the system has isolation valves installed and use these to optimise water supplies to the outlets being used
What are the outlet pressure on building pre and post 2006?
At which height should water suppression systems be found?
What three functions do sprinklers perform?
Pre 2006 - 4 to 5 bars
And now it’s 8 bars
Residential buildings over 30m since 2006
Detect fire, attack and give an audible warning
How many dividing breechings can you use in a Rising main?
Where should it be plugged in?
Who should install (manage) the dividing breeching And first FF jets?
One only - and always directly onto the rising main not a length of hose
Floor below fire floor
Initial BA crews as they will be required to pass through BA entry control
