n
Communications between pumps and ownership/
responsibility needs to be carefully managed. Multiple
lines laid at considerable distances apart make fire
ground dynamics even harder to manage.
n
High volume low aspiration monitors need to be of
a size capable of extinguishing the largest tank or
bund fire. Multiple tank fires will need strategic
targeting on a prioritisation basis.
n
Water distribution via high volume/large diameter
hose improves efficiency of hose laying and
hydraulics. Hose trailers and retrieval systems are
required to overcome manual handling issues
associated with 5 and 6 in. hose.
Foam
The EN 13565-2 fire fighting foam
design standard came into force in
2009 but is still not as widely known
as the long established NFPA 11
standard. However, early acquaintance
is to be encouraged because the
application rates for monitor
application to tanks are considerably
higher than under NFPA. For tanks of
45 m to 60 m diameter, the rate is
11 l/min/m
2
for 90 min and for 60 m+
tanks it is 12 l/min/m
2
for 90 min.
Foam supplies will need to be
considered either from the site itself
or with neighbours with similar
demands. Angus Fire, as the only UK
manufacturer of foam, has a proven
track record in supplying bulk stock by
road tanker under police escort from
its emergency stocks. The positioning
of so called consignment stock needs
to be carefully assessed as it may not
be as readily available.
n
Consideration needs to be given
to whether or not the foam is
suitable for the equipment used,
i.e. 3% induction is not suitable for
1% foam and vice versa.
n
Foam is compatible with other
foam being mobilised.
n
Foam is inextricably linked to
proportioning capability. A foam
proportioning unit that can be
located a good distance from the
fire ground enables safe
continuity of supply. Feeding
from road tanker or IBCs and fork
lift trucks needs clear routes in
and out. Again, this cannot be
seen in isolation from the water
supply logistics. Modern water
driven turbine proportioners and
jet pumps are the preferred
method of foam delivery to the
monitors.
One of the key strengths is
working in partnership with Angus Fire
as they offer a world class range of
mobile and fixed system solutions for the tank storage
industry. Other key partnerships include the innovative
Firemiks water turbine foam proportioner. These are often
supplied as part of a foam delivery skid or containerised
which enables the efficiencies of offsite fabrication and
ease of installation.
Case study 1
A large fuel terminal in the Manchester area was
mothballed a number of years ago. Hawkes Fire were asked
to design and supply the foam proportioning and
distribution devices that would reinstate and enhance the
existing fire infrastructure already in place.
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