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IEC 60079-10-1-ed.3.0-CMV
Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres
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STANDARD published on 18.12.2020
The information about the standard:
Designation standards: IEC 60079-10-1-ed.3.0-CMV
Publication date standards: 18.12.2020
SKU: NS-1098927
The number of pages: 373
Approximate weight : 1150 g (2.54 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60079-10-1-ed.3.0-CMV :
IEC 60079-10-1:2020 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60079-10-1:2020 edition 3.0 and the previous IEC 60079-10-1:2015 edition 2.0. Futhermore, comments from IEC SC 31J experts are provided to explain the reasons of the most relevant changes. The contents of the corrigendum of March 2021 have been included in this copy. IEC 60079-10-1:2020 is concerned with the classification of areas where flammable gas or vapour hazards may arise and may then be used as a basis to support the proper design, construction, operation and maintenance of equipment for use in hazardous areas. It is intended to be applied where there may be an ignition hazard due to the presence of flammable gas or vapour, mixed with air, but it does not apply to: a) mines susceptible to firedamp; b) the processing and manufacture of explosives; c) catastrophic failures or rare malfunctions which are beyond the concept of normality dealt with in this standard; d) rooms used for medical purposes; e) domestic premises; f) where a hazard may arise due to the presence of combustible dusts or combustible flyings but the principles may be used in assessment of a hybrid mixture. Flammable mists may form or be present at the same time as flammable vapour. In such case the strict application of the details in this document may not be appropriate. Flammable mists may also form when liquids not considered to be a hazard due to the high flash point are released under pressure. In these cases the classifications and details given in this document do not apply. For the purpose of this document, an area is a three-dimensional region or space. Atmospheric conditions include variations above and below reference levels of 101,3 kPa (1 013 mbar) and 20 °C (293 K), provided that the variations have a negligible effect on the explosion properties of the flammable substances. In any site, irrespective of size, there may be numerous sources of ignition apart from those associated with equipment. Appropriate precautions will be necessary to ensure safety in this context. This standard is applicable with judgement for other ignition sources but in some applications other safeguards may also need to be considered. E.g. larger distances may apply for naked flames when considering hot work permits. This document does not take into account the consequences of ignition of an explosive atmosphere except where a zone is so small that if ignition did occur it would have negligible consequences. This third edition of IEC 60079-10-1 cancels and replaces the second edition, published in 2015, and constitutes a technical revision, see foreword for further details. lIEC 60079-10-1:2020 concerne la classification des emplacements dans lesquels des phenomenes dangereux dus a des gaz ou vapeurs inflammables peuvent apparaitre, et peut ainsi constituer une base pour la conception, lexploitation et la maintenance correctes du materiel utilise dans de tels emplacements. Elle est destinee a etre appliquee la ou il peut exister un danger dinflammation du fait de la presence de gaz ou vapeurs inflammables, en melange avec lair, mais elle ne sapplique pas: a) aux mines grisouteuses; b) au traitement et a la fabrication des explosifs; c) aux defaillances catastrophiques ou rares dysfonctionnements, qui depassent le concept de normalite traite dans la presente norme; d) aux locaux utilises a des fins medicales; e) aux locaux a usage domestique; f) lorsqu’un danger peut apparaitre compte tenu de la presence de poussieres combustibles ou de particules combustibles en suspension dans lair, mais les principes definis peuvent toutefois etre appliques dans l’evaluation d’un melange hybride. Des brouillards inflammables peuvent se former ou etre presents en meme temps que les vapeurs inflammables. Dans ce type de cas, l’application stricte des details du present document peut ne pas etre appropriee. Les brouillards inflammables peuvent egalement se former lorsque les liquides qui ne sont pas consideres comme dangereux en raison du point d’eclair eleve sortent sous pression. Dans ces cas, les classifications et details donnes dans le present document ne s’appliquent pas. Des informations relatives aux brouillards inflammables sont donnees a l’Annexe G. Pour les besoins du present document, un emplacement est une region ou un espace tridimensionnel. Les conditions atmospheriques englobent les ecarts au-dessus et au-dessous des niveaux de reference de 101,3 kPa (1 013 mbar) et 20 °C (293 K) a condition que cela ait un effet negligeable sur les proprietes explosives des substances inflammables. Dans tout site quelle que soit son importance, il peut y avoir de nombreuses sources dinflammation en dehors de celles qui sont associees au materiel. Il est necessaire des lors de prendre les precautions appropriees pour garantir la securite. La presente norme est applicable avec prudence pour ces autres sources dinflammation mais dautres applications peuvent necessiter de prendre en consideration d’autres mesures de protection. Par exemple, de plus grandes distances peuvent sappliquer aux flammes nues lorsqu’il s’agit de permis de travaux a chaud. Le present document ne tient pas compte des consequences de linflammation dune atmosphere explosive, sauf dans une zone si petite que si une inflammation se produit, ses consequences sont negligeables. Cette troisieme edition de lIEC 60079-10-1 annule et remplace la deuxieme edition parue en 2015. Cette edition constitue une revision technique.
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