•If any hot work is to be conducted on the refrigeration equipment or 
any associated parts, appropriate fire extinguishing equipment shall 
be available to hand. Use a dry powder or CO2 fire extinguisher. 
 
•No person carrying out work in relation to a refrigerant system 
which involves exposing any pipework 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 cigarette smoking, should be 
kept sufficiently far away from the site of installation, repair, 
removal and/or 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 should be displayed. 
 
•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. 
 
•When electrical components are being charged, they shall be fit for 
purpose and to the correct specification. At all times, the instruction 
manual should be followed. If in doubt, consult the retailer. 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 refrigerants; 
markings on the equipment continue to be visible and legible; 
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 corroded.