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CEA 4001 - Aims; Description

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16
They
are
intended
only
for
fixed
fire
sprinkler
systems
in
buildings
and
other
premises
on
land.
Although
the
general
principles
may
well
apply
to
other
uses
(e.g.
maritime
use),
for
these
other
uses
additional
considerations
will
almost
certainly
have
to
be
taken
into
account.
1.2 Aims
An
automatic
sprinkler
system
is
designed
to
detect
a
fire
and
extinguish
it
with
water
in
its
early
stages
or
hold
the
fire
in
check
so
that
extinguishment
can
be
completed
by
other
means.
The
sprinkler
system
is
intended
to
extend
throughout
the
premises
with
only
limited
exceptions.
In
some
life
safety
applications,
an
authority
might
specify
sprinkler
protection
only
in
certain
designated
areas,
and
solely
to
maintain
safe
conditions
for
the
evacuation
of
persons.
It
should
not
be
assumed
that
the
provision
of
a
sprinkler
system
entirely
obviates
the
need
for
other
means
of
fighting
fires
and
it
is
important
to
consider
the
fire
precautions
in
the
premises
as
a
whole.
Structural
fire
resistance,
escape
routes,
fire
alarm
systems,
particular
hazards
needing
other
fire
protection methods,
provision
of
extinguishing
means,
safe
working
and
goods
handling
methods,
management supervision
and
good
housekeeping
all
need
consideration.
It
is
essential
that
sprinkler
systems
should
be
properly
maintained
to
ensure
operation
when
required.
This
routine
is
liable
to
be
overlooked
or
given
insufficient
attention
by
supervisors.
It
is,
however,
neglected
at
peril
to
the
lives
of
occupants
of
the
premises
and
at
the
risk
of
crippling
financial
loss.
The
importance
of
proper
maintenance
cannot
be
too
highly
emphasized.
When
sprinkler
systems
are
out
of
service
extra
attention
should
be
paid
to
fire
precautions
and
the
appropriate
authorities
informed.
1.3 Description
A
sprinkler
system
consists
of
a
water
supply
(or
supplies)
and
one
or
more
sprinkler
installations;
each
installation
consists
of
a
set
of
installation
main
control
valves
and
a
pipe
array
fitted
with
sprinkler
heads.
The
sprinkler
heads
are
fitted
at
specified
locations
at
the
roof
or
ceiling,
and
where
necessary
between
racks, below
shelves,
and
other
specified
places.
The
main
elements
of
a
typical
installation
are
shown
in
Figure
1.
The
sprinklers
operate
at
predetermined
temperatures
to
discharge
water
over
the
affected
part
of
the
area
below.
The
flow
of
water
through
the
alarm
valve
initiates
a
fire
alarm.

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