Stefan BengtssonSödra Älvsborg Fire Service

Case study:Fire in roof attic, apartment building

•Contains the description of fire development, tactics during the operation

•Choice of methods and effects of intervention

•Tactics and methodology based on critical factors in the fire area

Case study:Fire in roof attic, apartment building

Incident commander decision support and methods are:

• TIC outside scanning• PPV ventilation• Cobra by aerial unit or fire truck• BA-attack

Call to112Time 22:40, initial information:Smoke coming out from apartment

buildingSome smoke even out in the staircase,

reason unknownPeople will try to meet fire service

outside

Responding units

22:45 Confirming out:Incident commanderFire truck 1 and 2Aerial unit

22:48 Call to incident commander from 112 Now even smoke out in the staircase

22:51 First unit arriving on the scene Incident commander

360

360

360

Objectives on the sceneBuilding with 4 floors and a total of 14 apartmentsFire gas/smoke out in the staircaseSmoke seen from the street outsidePeople hanging out from a windowFire gas spreading in the atticRisk of ignition of attic fire gasesUnknown starting point of the fireEvening, dark outside

Risk assessment Lifesaving operation?Evacuating the building?Rapid spreading of fire gases down into staircase.Risk during intervention inside. Unknown fire behavior at the time.Unknown origin of fire.Fire gases spreading in the attic.Risk of ignition of attic fire gases.

Priorities

• Lifesaving of 2 person hanging out from the window

• Secure the staircase from smoke/fire gas

• Consider evacuate occupants

• Locate the origin of the fire

Methodology and intervention

• Outside lifesaving with the aerial unit

• Ventilate staircase with PPV-fan

• Secure staircase with PPV-fan

• Locate origin of fire with TIC-scanning and visual look

• Risk assessment based tactic/methodology use

• Control expanding fire behavior with cobra attack

• Outside priorities of the first cobra/aerial unit attack

Location for the PPV-fans

Points and angels of cobra attack

startfire

Setup for ariel

Studio apartment

Cobra waterjet angel percing from the outside.Intend to reatch firegas and hot areas inside the roof.

Methodology and intervention

Time

Temp

Cobra attack

Normally expected flashover curve 700c

BA-intervention (140c)

140c

600c

5 min 10 min 15 min 48 min45 min

Thermal scanning in action

• For decision support

Important with knowledge of fire behavior and fire

spread

•Facilitate choice of method

Evaluate this TIC information

Evaluate this TIC information

Compere different color palettes

Evaluate this TIC information

Compere different color palettes

Compere different color palettes

TIC scanning Entering the fire

sceneInitial object informationStreaming heatOrigin of fireFire gas spreadingRisk assessmentPressure differenceTemperature differenceMethodology 1-2-3 step

During intervention

ChangesRisk assessmentEffect objectivesAnalysisMethod and needTimescale methodResources-needEvaluate

1. Scanning frame2. Scanning X-cross3. Scanning painting

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Decision support with external thermal scanning

FLIR

Scanning frame• Size of the building type and construction.• Type of roof construction/surface material• Number of apartment level• Streaming smoke and fire gas on top• Heat finder on different side of building• Fire behavior enclosure fires• Looking needs to evacuate the building

Scanning X-cross• Size of the front building• Doors and window• Temperature on the surface• Fire gas and smoke• Streaming heat• Number of apartment / Needs to evacuate

Scanning painting•Check details vent and ducts• Start fire room• Fire spread and heat stream•Attack point cobra attack• Pressure and ventilation places for PPV-fan

Thank you!