This document specifies basic methodology used in achieving safety of equipment for intended use in potentially explosive atmospheres.
The provisions specified in this document are intended for standard makers and designers.
This document specifies the procedure and information required to allow ignition risk assessment to be carried out for the design of equipment or component.
This document provides advice for a decision to be made for the categorisation of equipment but does not provide means to prove the conformity of equipment categories.
In this procedure the following information is taken into account:
a) possible occurrence of an explosive atmosphere inside the equipment or component or penetrating the equipment or component from the outside (in normal operation or during malfunctions) and the amount of explosive atmosphere involved leading to possible explosion impact inside of the equipment or component;
b) equipment or components surrounded by an explosive atmosphere (in normal operation or during malfunctions);
c) equipment or components wholly or partly surrounded by an explosive atmosphere considering also any explosive atmosphere in connection (in normal operation or during malfunctions);
d) presence and likelihood (effectiveness) of ignition sources.
This document specifies basic methodology used in achieving safety of equipment for intended use in potentially explosive atmospheres.
The provisions specified in this document are intended for standard makers and designers.
This document specifies the procedure and information required to allow ignition risk assessment to be carried out for the design of equipment or component.
This document provides advice for a decision to be made for the categorisation of equipment but does not provide means to prove the conformity of equipment categories.
In this procedure the following information is taken into account:
a) possible occurrence of an explosive atmosphere inside the equipment or component or penetrating the equipment or component from the outside (in normal operation or during malfunctions) and the amount of explosive atmosphere involved leading to possible explosion impact inside of the equipment or component;
b) equipment or components surrounded by an explosive atmosphere (in normal operation or during malfunctions);
c) equipment or components wholly or partly surrounded by an explosive atmosphere considering also any explosive atmosphere in connection (in normal operation or during malfunctions);
d) presence and likelihood (effectiveness) of ignition sources.
This document specifies neither specific methods of analysis associated with ignition risk assessment, nor specific requirements for a category of equipment. It describes the methodology of ignition risk assessment.
This document does not apply to equipment with a potentially explosive atmosphere inside under operating conditions, and without interfaces to an external potentially explosive atmosphere.
This document is applicable to all categories of equipment referred to in EN ISO 80079 36:2016.
This ignition risk assessment procedure does not preclude the conditions prevailing in an installation where the equipment or component is put into operation by a user.
While this document does not provide direct requirement related to category of equipment, the methodology specified in this document is applicable to all category of equipment and complement requirements specified in relevant standards, such as EN 1127 1 and EN ISO 80079 37.
NOTE Functional safety assessment of protective systems is covered by EN 15233.
Related directives
NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.
2014/34/EU
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)
