IEVref:
426-03-23
ID:
Language:
en
Status:
Obsolete
Term:
zone 20
Synonym1:
Synonym2:
Synonym3:
Symbol:
Definition:
area in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, or for long periods or frequently
Publication
date
:
2008-02
Source
Replaces:
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5:
area in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, or for long periods or frequently