11
English
2-3. Checking for presence of
refrigerant
• The area shall be checked with an
appropriate refrigerant detector prior
to and during work, to ensure the
technician is aware of potentially
ß
ammable atmospheres.
• Ensure that the leak detection
equipment being used is suitable for
use with
ß
ammable refrigerants, i.e.
non sparking, adequately sealed or
intrinsically safe.
• In case of leakage/spillage happened,
immediately ventilate area and stay
upwind and away from spill/release.
• In case of leakage/spillage happened,
do notify persons down wind of
the leaking/spill, isolate immediate
hazard area and keep unauthorized
personnel out.
2-4. Presence of
Þ
re extinguisher
• If any hot work is to be conducted
on the refrigerating equipment or
any associated parts, appropriate
Þ
re extinguishing equipment shall be
available at hand.
• Have a dry powder or CO
2
Þ
re
extinguisher adjacent to the charging
area.
2-5. No ignition sources
• No person carrying out work in
relation to a refrigerating system
which involves exposing any pipe
work that contains or has contained
ß
ammable refrigerant shall use any
sources of ignition in such a manner
that it may lead to the risk of
Þ
re
or explosion. He/She must not be
smoking when carrying out such
work.
• All possible ignition sources, including
cigarette smoking, should be kept
suf
Þ
ciently far away from the site of
installation, repairing, removing and
disposal, during which
ß
ammable
refrigerant can possibly be released
to the surrounding space.
• Prior to work taking place, the area
around the equipment is to be
surveyed to make sure that there
are no
ß
ammable hazards or ignition
risks.
• “No Smoking” signs shall be
displayed.
2-6. Ventilated area
• Ensure that the area is in the open
or that it is adequately ventilated
before breaking into the system or
conducting any hot work.
• A degree of ventilation shall continue
during the period that the work is
carried out.
• The ventilation should safely
disperse any released refrigerant and
preferably expel it externally into the
atmosphere.
Safety precautions
ACXF55-24700_FULLSET.indb 11
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