Inhoudsopgave
Advertenties
Beschikbare talen
Beschikbare talen
around the workspace shall be sectioned off. Ensure that the conditions within the
area have been made safe by control of flammable material.
1.4 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 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
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 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 but it is necessary to continue
operation, an adequate temporary solution shall be used. This shall be reported to the
owner of the equipment so all parties are advised.
Initial safety checks shall include: that capacitors are discharged: this shall be done in
a safe manner to avoid possibility of sparking; that there no live electrical components
Advertenties
Hoofdstukken
Inhoudsopgave
