# Directive 2014/34/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres (recast) (Text with EEA relevance), Division 1.5.1

Extent: E+W+S+N.I.

Safety devices must function independently of any measurement and/or control devices required for operation.
As far as possible, failure of a safety device must be detected sufficiently rapidly by appropriate technical means to ensure that there is only very little likelihood that dangerous situations will occur.
The fail-safe principle is to be applied in general.
Safety-related switching must in general directly actuate the relevant control devices without intermediate software command.

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Source: https://www.legislation.gov.uk/eudr/2014/34/annex/II/division/1/division/1.5/division/1.5.1 (the official version)
Page: https://openlegislation.uk/eu-directive-2014-34/annex-II/division-1/division-1.5/division-1.5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.