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  • BSI
    BS EN ISO 80079-20-1:2019 Explosive atmospheres - Material characteristics for gas and vapour classification. Test methods and data
    Edition: 2019
    $557.44
    / user per year

Description of BS EN ISO 80079-20-1:2019 2019

This part of ISO/IEC 80079 provides guidance on classification of gases and vapours. It describes a test method intended for the measurement of the maximum experimental safe gaps (MESG) for gas-air mixtures or vapour-air mixtures under normal conditions of temperature and pressure (20 °C, 101,3 kPa) so as to permit the selection of an appropriate group of equipment. This document also describes a test method intended for use in the determination of the auto-ignition temperature (AIT) of a vapour-air mixture or gas-air mixture at atmospheric pressure, so as to permit the selection of an appropriate temperature class of equipment.

Values of chemical properties of materials are provided to assist in the selection of equipment to be used in hazardous areas. Further data may be added as the results of validated tests become available.

The materials and the characteristics included in a table (see Annex B) have been selected with particular reference to the use of equipment in hazardous areas. The data in this document have been taken from a number of references which are given in the bibliography.

These methods for determining the MESG or the AIT may also be used for gas-air-inert mixtures or vapour-air-inert mixtures. However, data on air-inert mixtures are not tabulated.



Standard NumberBS EN ISO 80079-20-1:2019
TitleExplosive atmospheres - Material characteristics for gas and vapour classification. Test methods and data
StatusRevision Underway
Publication Date2019-11-27
ReplacesBS EN 60079-20-1:2010
Identical National Standard OfISO/IEC 80079-20-1:2017/COR1:2018, ISO/IEC 80079-20-1:2017, EN ISO/IEC 80079-20-1:2019
CorrectsBS EN ISO 80079-20-1:2019
DescriptorsDust explosions, Hazardous areas classification (for elec, Flammable atmospheres, Electrical safety, Dust, Protected electrical equipment, Fire safety, Materials specification, Flammable materials, Test methods, Testing, Fire risks, Classification systems, Explosive atmospheres, Electrical equipment
ICS29.260.20 Electrical apparatus for explosive atmospheres
CommitteeEXL/23
ISBN978 0 539 12202 2
PublisherBSI
Pages94

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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