|
|
|
|
|
Situation / Location
|
Suitable
Detector Type
|
Comments
|
Photographic Rooms
(Dark/Developing/Copying) |
OPTICAL
|
The presence of gaseous substances
may cause false alarms with ionisation smoke detectors |
| Recording Studio |
BOTH
|
A mix of both types of detector
may be required as a flaming fire is more likely to occur,
however many electronics are also present which can overheat
along with PVC cables thus producing a smouldering fire. |
| Schools |
BOTH
|
Consideration must be given
to each area to be protected. |
| Stairways |
OPTICAL
PREFERRED
IONISATION
ACCEPTABLE
|
As air currents exist in these
areas and
they are >Escape Routes=, for occupants
of a building, optical are preferred to
detect visible smoke.
|
| Theatre Stage Areas |
BOTH
|
Many different factors exist
which will influence the type of detector required to
cover stage areas. For example materials stored and used
on stage, may produce either a rapid burning fire (Ionisation)
or a smouldering fire (Optical). Another possible factor
is the use of a smoke generator for special effects brings
about the possible consideration for using Rate of Rise
Heat Detectors as Smoke Detectors could cause problems. |
| Warehouses |
OPTICAL BEAM
DETECTORS
|
Optical Beam Detectors can be
used where large unobstructed roof areas need coverage
such as those found in most warehouses. For other areas,
both types are suitable, however if fumes are present
in these areas such as those produced by diesel or propane
fork lift trucks, false alarms may occur if either detectors
are used. |
| X-Ray/Treatment Rooms |
OPTICAL
|
Radioactivity can cause problems
if Ionisation is used. |
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