107
with
a signed,
dated
report
of
the
inspection
and
advise
of
any
rectification
carried
out
or
needed,
and
advise
of
any external
factors,
which
may
have
affected
the
results.
18.4.2. Quarterly routine
18.4.2.1 General
The
following
checks
and
inspections
shall
be
made
at
intervals
of
not
more
than
13
weeks.
18.4.2.2 Review of hazard
The
effect
of
any
changes
of
structure,
occupancy,
storage
configuration,
heating,
lighting
or
equipment
etc.
of
a
building
on
hazard
classification
or
installation
design
shall
be
identified
in
order
that
the
appropriate modifications
may
be
carried
out.
18.4.2.3 Sprinklers, multiple controls and sprayers
Sprinklers,
multiple
controls
and
sprayers
affected
by
deposits
(other
than
paint)
shall
be
carefully
cleaned. Painted
or
distorted
sprinklers
heads,
multiple
controls
or
sprayers
shall
be
replaced.
Any
petroleum
jelly
coatings
shall
be
checked.
Where
necessary
the
existing
coatings
shall
be
removed
and
the
sprinklers,
multiple
controls
or
sprayers
shall
be
coated
twice
with
petroleum
jelly
(in
the
case
of
glass bulb
sprinklers
to
the
sprinkler
body
and
yoke
only).
Particular
attention
shall
be
paid
to
sprinklers
in
spray
booths,
where
more
frequent
cleaning
and/or
protective measures
may
be
necessary.
18.4.2.4 Pipework and pipe supports
Pipework
and
hangers
shall
be
checked
for
corrosion
and
painted
as
necessary
Bitumen-based
paint
on
pipework,
including
the
threaded
ends
of
galvanised
pipework,
and
hangers
shall
be renewed
as
necessary.
NOTE
:
bitumen-based
paint
may
need
renewal
at
intervals
varying
from
1
to
5
years
according
o
the severity
of
the
conditions.
Tape
wrapping
on
pipes
shall
be
repaired
as
necessary.
The
pipework
shall
be
checked
for
electrical
earthing
connections.
Sprinkler
pipework
shall
not
be
used
for earthing
electrical
equipment
and
any
earthing
connections
from
electrical
equipment
shall
be
removed
and alternative
arrangements
made.
18.4.2.5 Water supplies and their alarms
Each
water
supply
shall
be
tested
with
each
control
valve
set
in
the
system.
The
pump(s),
if
fitted,
in
the supply
shall
start
automatically
and
the
supply
pressure
at
the
appropriate
flow
rate
shall
be
not
less
than
the appropriate
value
in
accordance
with
clause
9,
recognising
any
changes
required
by
18.4.2.2.
18.4.2.6 Electrical supplies
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