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intrinsically safe.
3. Presence of re extinguisher:
If any hot work is to be conducted on the refrigeration equipment or any
associated parts, appropriate re extinguishing equipment shall be available to
hand. Have a dry powder or CO2 re extinguisher adjacent to the charging area.
4. No ignition sources:
No person carrying out work in relation to a refrigeration 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 re or explosion. All possible ignition sources, including
cigarette smoking, should be kept suciently 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 ammable hazards or ignition risks. 'No Smoking'
signs shall be displayed.
5. Ventilated Area(open the door and window):
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.
6. Checks to the refrigeration equipment:
Where electrical components are being changed, they shall be t for the purpose
and to the correct specication. At all times the manufacturer's maintenance
and service guidelines shall be followed. If in doubt, consult the manufacturer's
technical department for assistance. The following checks shall be applied to
installations using ammable refrigerants:
• The charge size is in accordance with the room size within which the
refrigerant containing parts are installed.
• The ventilation machinery and outlets are operating adequately and are not
obstructed.
• If an indirect refrigerating circuit is being used, the secondary circuit shall be
checked for the presence of refrigerant.
• Refrigeration pipe or components are installed in a position where they
are unlikely tobe exposed to any substance which may corrode refrigerant
containing components,unless the components are constructed of materials
which are inherently resistant to being corroded or are suitably protected
against being so corroded.
7. Checks to electrical devices:
Repair and maintenance to electrical components shall include initial safety checks
and component inspection procedures. If a fault exists that could compromise
safety, then no electrical supply shall be connected to the circuit until it is
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