EN ISO 80079-36:2016

European Foreword
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 EPL and equipment groups
5 Ignition hazard assessment
6 Assessment of possible ignition sources and control means
7 Additional considerations
8 Verification and tests
9 Documentation
10 Instructions
11 Marking
Annex A (informative) - Methodology for confirming the EPL
Annex B (informative) - Explanation of the ignition
        hazard assessment procedure
Annex C (informative) - Examples of ignition hazard
        assessment
Annex D (normative) - Charging tests with non-conductive
        materials
Annex E (informative) - Consideration of misuse which
        can reasonably be anticipated during ignition hazard
        assessment procedure
Annex F (informative) - Development of different types
        of incendive electrostatic discharges
Annex G (normative) - Protection concepts of types of
        protection 'd', 'p' and 't' acceptable for
        non-electrical equipment
Annex H (informative) - Volume dependence of
        auto-ignition temperature
Annex I (informative) - Relationship between Equipment
        protection levels (EPLs) and zones
Bibliography
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements
         of EU Directive 2014/34/EU
Annex ZB (informative) - Correspondence of equipment groups
Annex ZC (informative) - Significant changes between this
         European Standard and EN 13463-1:2009

ISO 80079-36:2016 specifies the basic method and requirements for design, construction, testing and marking of non-electrical Ex equipment, Ex Components, protective systems, devices and assembliesof these products that have their own potential ignition sources and are intended for use in explosive atmospheres. Hand tools and manually operated equipment without energy storage are excluded from the scope of this standard. This standard does not address the safety of static autonomous process equipment when it is not part of equipment referred to in this standard. This standard does not specify requirements for safety, other than those directly related to the risk of ignition which may then lead to an explosion. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that equipment can be operated are:- temperature -20 °C to 60 °C;- pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and- air with normal oxygen content, typically 21 % v/v. Such atmospheres can also exist inside the equipment. In addition, the external atmosphere can be drawn inside the equipment by natural breathing produced as a result of fluctuations in the equipment's internal operating pressure, and/or temperature. This part of ISO/IEC 80079 specifies the requirements for the design and construction of equipment, intended for explosive atmospheres in conformity with all Equipment Protection Levels (EPLs) of Group I, II and III. This standard supplements and modifies the general requirements of IEC 60079-0, as shown in Table 1 in the Scope of the document. Keywords: mechanical explosion protected equipment