# The Dangerous Substances and Explosive Atmospheres Regulations 2002, Paragraph: Zone 21


A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to occur in normal operation occasionally.

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Source: https://www.legislation.gov.uk/uksi/2002/2776/schedule/2/paragraph/wrapper6n1 (the official version)
Page: https://openlegislation.uk/dangerous-substances-and-explosive-atmospheres-regulations-2002/schedule-2/paragraph-wrapper6n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.