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4. 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
flammable atmospheres. Ensure that the leak detection equipment
being used is suitable for use with flammable refrigerants, i.e. non-
sparking, adequately sealed or intrinsically safe.
5. Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or
any associated parts, appropriate fire extinguishing equipment shall be
available at hand. Have a dry powder or CO
fire extinguisher adjacent to
²
the charging area.
6. No ignition sources
No person carrying out work in relation to a refrigeration system
which involves exposing any pipe work that contains or has contained
flammable refrigerant shall use any sources of ignition in such a manner
that it may lead to the risk of fire or explosion. All possible ignition
sources, including cigarette smoking, should be kept sufficiently far
away from the site of installation, repairing, removing and disposal,
during which flammable 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 flammable
hazards or ignition risks. "No smoking"-signs shall be displayed.
7. 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 work is carried out.
The ventilation should safely disperse any released refrigerant and
preferably, expel it externally into the atmosphere.
8. Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification. At all times, the manufacturer's
maintenance and service guidelines shall be followed. If in doubt,
consult the manufacturer's technical department for assistance.
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