The municipal structure for providing rescue services in Allmänsta has received
an alarm concerning a fire in a flat. On arrival it is apparent that the fire has
spread via the eaves into the attic. How ever, the property has well functioning fire
safeguards. There is a firewall on each side of the building and the roofing frame
has a high fire resistance classification.
The municipal structure for providing rescue services decides on the goal of
limiting the fire to the attic space. The present resources are inadequate for quickly
extinguishing the fire, which means that the, as yet, unaffected parts of the attic
will become affected and cannot be saved.
Measures are applied to the fire walls in order to reinforce their effect and
establish control. Through opening a hole in the roof construction and applying
mist spray, the combustion gases in the attic space are cooled. The property is
evacuated and BA firefighters check the flats on the top floor for fire spreading
down from the attic. The operation is configured primarily to prevent the spread
of the fire. Measures are applied, however, to meet various parts of the assistance
need. The mist spray is a measure aimed at directly influencing the destructive
sequence. The measures to reinforce the firewalls are oriented towards increasing
the likelihood of the firewalls withstanding the effect of the fire. These measures
are applied to parts of the building that are not yet affected in order to avoid a
potential problem.
Example 21