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Idiomas disponibles
Idiomas disponibles
ADR 122 ADR 128 ADRW 120 ADRW 125
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 tection equipment
being used is suitable for use with flammable refrigerants, i.e. nonsparking, adequately sealed or
intrinsically safe.
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
When electrical components are replaced, they must be fit for purpose and to the correct specification.
The manufacturer's maintenance and service guidelines must be followed at all times. In case of doubt,
refer to the manufacturer's technical department for assistance. The following checks must be applied
to installations using flammable refrigerants:
- The load size is in accordance with the size of the room where refrigerant-containing parts are
installed.
- Ventilation machinery and outlets can be properly operated and are unobstructed.
- If an indirect cooling circuit is used, the secondary circuit must be checked for refrigerant presence.
- Equipment marking remains visible and legible. Illegible markings and symbols should be corrected.
- The components or refrigerant piping are installed in a position where they are not susceptible to
exposure to any substance that may corrode the refrigerant-containing components, unless the
components are made of materials that are inherently resistant to corrosion or are properly protected
against it..
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 compromise safety, then no electrical supply shall be
connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately
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