Fire ventilation

chapter 10
Examples of fi re
fi ghting situations
Earlier in this book fi re ventilation has been treated as a
separate measure. It is, however, important to link fi re ventilation
with other parts of the fi re and rescue operation,
depending among other things on what the fi re looks like,
what the building/fi re room looks like, and which resources
are available.
A number of conceivable fi re and rescue operations are
described below, where fi re ventilation can be an appropriate
measure. The exemplifi ed situations have been refi ned to
demonstrate the issues, problems and possibilities applicable
to fi re ventilation. In real fi res it is seldom as simple as this.
Above all there is a time factor to be taken into consideration,
which is diffi cult to describe in a text of this nature. The
intention of the examples is only to create a picture of how
several different, but conceivable situations may develop.
Small fi re in relation to the size of the room
If the fi re is small in relation to the size of the room the fi re
will seldom develop into a fully developed fi re, even if the fi re
is fuel controlled all the time. The fi re may, however, develop
a large volume of fi re gases that needs to be vented out.
This could be the case, for example, in a large industrial
premise with a relatively contained fi re, or if there is a high
ceiling. The higher the ceiling, the greater the volume of air
that will be mixed in with the products from the fi re. There
will therefore be a large volume of fi re gases, but it will be
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