This part of ISO/IEC 80079 specifies the basic procedures and requirements for the design, construction, testing and marking of non-electrical Ex equipment, Ex components, protection systems, devices and assemblies of these products which have their own potential ignition sources and for intended for use in potentially explosive atmospheres. Hand tools and hand-operated devices without energy storage are excluded from the scope of this standard. This standard does not address the safety of static autonomous process equipment if it is not part of equipment referred to in this standard. NOTE 1 Static autonomous process equipment includes, for example, tanks, containers, fixed piping and manually operated valves without their own power source, which could create a potential source of ignition during operation. This standard does not specify safety requirements except where they relate directly to the risk of ignition which could then lead to an explosion. The usual atmospheric conditions (in relation to the explosion characteristics of the atmosphere) under which plants can be expected to operate are:
——Temperature range -20 °C to +60 °C;
——Pressure 80 kPa (0.8 bar) to 110 kPa (1.1 bar); and;
——Air with normal oxygen content, usually 21% (v/v). Such atmospheres can also be present inside the device. In addition, the external atmosphere may be drawn into the device through natural exchange as a result of fluctuations in the operating pressure inside the device and/or temperature. NOTE 2 Although the usual atmospheric conditions listed above indicate an atmospheric temperature range of -20°C to +60°C, the typical ambient temperature range for the device is -20°C to +40°C unless otherwise specified and marked is. -20°C to +40°C is assumed to be appropriate for most devices; Manufacturing all Ex devices for suitability in a normal atmosphere in the upper temperature range of +60 °C would lead to unnecessary design restrictions. NOTE 3 The requirements of this standard may also be useful for the design, construction, testing and marking of equipment intended for use in atmospheres outside the scope of this standard as defined above. However, in this case, the ignition hazard assessment, the intended type of protection, additional tests (if necessary), the manufacturer's technical documentation and instructions for the user would have to clearly demonstrate the suitability of the device for the conditions encountered.
EN ISO 80079-36:2016 Referenced Document
IEC 60079-0:2011 Explosive atmospheres - Part 0: Equipment - General requirements
IEC 60079-1:2014 Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
IEC 60079-28:2015 Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation
IEC 60079-2:2014 Explosive atmospheres - Part 2: Equipment protection by pressurized enclosure "p"
IEC 60079-31:2013 Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t"
ISO 80079-37:2016 Explosive atmospheres — Part 37: Non-electrical equipment for explosive atmospheres — Non-electrical type of protection constructional safety ''c'', control of ignition sources ''b'', liquid immersion
ISO/IEC 80079-38:2016 Explosive atmospheres - Part 38: Equipment and components in explosive atmospheres in underground mines
EN ISO 80079-36:2016 history
2019EN ISO 80079-36:2016/AC:2019 Explosive atmospheres - Part 36: Non-electrical equipment for explosive atmospheres - Basic method and requirements - Technical Corrigendum 1 (ISO 80079-36:2016/Cor 1:2019)
2016EN ISO 80079-36:2016 Explosive atmospheres - Part 36: Non-electrical equipment for explosive atmospheres - Basic method and requirements