7
3. Health and safety
Definition of zone classification
Zone 1:
Area in which a dangerous explosive
atmosphere comprising a mixture of air
and flammable gases, vapours or mist
can occasionally form in normal use.
Flammable gas caused by chemical reactions (e.g. liquid / aluminium dust) may develop in the
separator whilst it is switched on and whilst it is idle.
Zoneneinteilung - Größtmögliches Gefährdungspotential
3.9 Zones
Degasification valve
Zone 1
Within an area
r = 100mm
around the exhaust port
Degasification valve
Zone 2
Within an area
r = 200mm
around the exhaust port
Zone 2:
Area in which a dangerous explosive
atmosphere comprising a mixture of air
and flammable gases, vapours or mist
does not usually occur or may occur
briefly in normal use.
