15
h) When the cylinders have been
fi
lled correctly and the process
completed, make sure that the
cylinders and the equipment
are removed from site promptly
and all isolation valves on the
equipment are closed off.
• Electrostatic charge may accumulate
and create a hazardous condition
when charging or discharging the
refrigerant. To avoid
fi
re or explosion,
dissipate static electricity during
transfer by grounding and bonding
containers and equipment before
charging/discharging.
11. Labelling
• Equipment shall be labelled stating
that it has been de-commissioned
and emptied of refrigerant.
• The label shall be dated and signed.
• Ensure that there are labels on the
equipment stating the equipment
contains
fl
ammable refrigerant.
12. Recovery
• When removing refrigerant from
a system, either for servicing or
decommissioning, it is recommended
good practice that all refrigerants are
removed safely.
• When transferring refrigerant
into cylinders, ensure that only
appropriate refrigerant recovery
cylinders are employed.
• Ensure that the correct number of
cylinders for holding the total system
charge are available.
• All cylinders to be used are
designated for the recovered
refrigerant and labelled for that
refrigerant (i.e. special cylinders for
the recovery of refrigerant).
• Cylinders shall be complete with
pressure relief valve and associated
shut-off valves in good working
order.
• Recovery cylinders are evacuated
and, if possible, cooled before
recovery occurs.
• The recovery equipment shall
be in good working order with a
set of instructions concerning the
equipment that is at hand and
shall be suitable for the recovery of
fl
ammable refrigerants.
• Make sure the recovery equipment
is not a potential ignition source and
is suitable for the refrigerant you are
using.
• In addition, a set of calibrated
weighing scales shall be available
and in good working order.
• Hoses shall be complete with leak-
free disconnect couplings and in
good condition.
