Všechny kapitoly z katalogu elektroinstalačních krabic a kabelových vývodek.
Poznámky redaktora
An
explosive atmosphere mixture air and flammable gasses,
vapours, mists dust under atmospheric conditions where,
following successful ignition, the burning process will propagate
throughout the whole unburned mixture.
For the risk assessment and well the zoning concept
described above, devices themselves can considered in
an alternative process which uses the equipment protection
level (EPL). One measure the division the area into
zones where explosive atmospheres could present.
Zone 21
An area where, during normal operations, potentially explosive
atmosphere the form flammable dust cloud the air
can occasionally form.2
ATEX directive 1999/92/EC
ATEX directive 1999/92/EC
Article 137 the European Community Formation Treaty set out
the minimum standards order improve workers’ health and
safety, this can also put risk explosive atmospheres.
Zone 1
An area which during normal operations potentially explosive
atmosphere air and flammable gases, vapours mists
can occasionally form.
Zone 2
An area for which during normal operations there most only
a short-term occurrence potentially explosive atmosphere of
mixtures air and flammables gases, vapours mists.
In particular these zones the following categories equipment
should used, long they are suitable for use with gases,
vapours, mists dusts:
• In Zone Zone 20: category devices,
• In Zone Zone 21: category category devices,
• In Zone Zone 22: category category or
category devices. This cloud is
either permanently present frequently present over long
periods time. possible for local regulators introduce more stringent
requirements.Technicalappendix
W
W. These protective levels determine the internal ignition
risk device where the sort applied protection does not
play role.
Unless the risk analysis conducted the employer indicates
otherwise, all areas where explosive atmosphere may be
present must equipped with devices and protective systems
that meet the relevant category the ATEX directive 94/9/EC.
The ATEX directive 1999/92/EC was transferred into national
law.
Zoning according the ATEX directive 1999/92/EC
Zone 0
An area which has potentially explosive atmosphere that is
a mixture air and flammable gases, vapours mists.
Zone 22
An area where, during normal operations, potentially explosive
atmosphere the form flammable dust cloud the air is
not normally present only present for short time.
The employer required, according the ATEX directive
1999/92/EC, take measures ensure the health and safety
of the employees.
Zone 20
An area where potentially explosive atmosphere present in
the form flammable dust cloud the air.
. Compliance with the minimum standards contained this
directive does not guarantee that all relevant national laws are
met. The
mixture either permanently present frequently present over
long periods time
