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ENGLISH
2. Work procedure
Work shall be undertaken under a controlled procedure to minimize the risk
of a
fl
ammable gas or vapor being present while the work is being performed.
3. General work area
All maintenance staff and others working in the local area shall be instructed
on the nature of work being carried out. Work in con
fi
ned spaces shall be
avoided.
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 toxic or
fl
ammable
atmospheres. Ensure that the leak detection equipment being used is suitable
for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or
intrinsically safe.
5. Presence
of
fi
re extinguisher
If any heat-processing operation is to be conducted on the refrigerating equip-
ment or any associated parts appropriate
fi
re extinguishing equipment shall be
available to hand. Have a dry powder or CO2
fi
re extinguisher adjacent to the
charging area.
6. Prohibition
of
fi
re
No person carrying out work in relation to a refrigerating system which involves
exposing any pipe work shall use any sources of ignition in such a manner
that it may lead to the risk of
fi
re or explosion. All possible ignition sources,
including cigarette smoking, should be kept suf
fi
ciently far away from the site
of installation, repairing, removing and disposal, during which 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
fl
ammable 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
opening 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
