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1.5 Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any
associated parts, propriate fire extinguishing equipment shall be available to
hand. Have a dry powder or CO 2 fire extinguisher adjacent to the charging
area.
1.6 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 igarette 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.
1.7 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 the work is carried out. The ventilation
should safely disperse any released refrigerant and preferably expel it
externally into the atmosphere.
1.8 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.The following checks shall
be applied to installations using flammable 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; marking to
the equipment continues to be visible and legible. Markings and signs that
are illegible shall be corrected; refrigeration pipe or components are installed in
a position where they are unlikely to be 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.
1.9 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