标准摘要
[中文适用范围]: IEC 60079 的这一部分涉及可能出现易燃气体或蒸气危险的区域的分类,然后可以用作支持正确选择和安装危险区域中使用的设备的基础。它适用于因存在与空气混合的易燃气体或蒸气而可能存在着火危险的地方,但不适用于: a) 易受沼气影响的矿井; b) 爆炸物的加工和制造; c) 超出本标准所处理的异常概念的灾难性故障或罕见故障(见3.7.3和3.7.4); d) 用于医疗目的的房间; e) 仅使用低压燃气用于烹饪、热水和类似用途的商业和工业应用,其安装符合相关气体规范; f) 住宅场所; g) 由于存在可燃粉尘或可燃飞沫而可能产生危险,但这些原则可用于评估混合混合物(另请参阅 IEC 60079-10-2)。注:附件 I 中提供了有关混合混合物的附加指南。易燃雾气可能与易燃蒸气同时形成或存在。在这种情况下,严格应用本标准中的细节可能不合适。当由于闪点高而不被认为是危险的液体在压力下释放时,也可能形成易燃雾。在这些情况下,本标准中给出的分类和详细信息不适用。附录 G 中提供了有关易燃雾气的信息。就本标准而言,区域是指三维区域或空间。大气条件包括高于和低于 101,3 kPa (1013 mbar) 和 20 °C (293 K) 参考水平的变化,前提是这些变化对易燃物质爆炸特性的影响可以忽略不计。在任何加工厂中,无论规模大小,除了与设备相关的火源外,还可能存在许多火源。为了确保这种情况下的安全,需要采取适当的预防措施。本标准适用于其他点火源的判定。本标准没有考虑爆炸性气体环境着火的后果。 [外文原描述]: IEC 60079-10-1:2015 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 selection and installation 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: - mines susceptible to firedamp; - the processing and manufacture of explosives; - catastrophic failures or rare malfunctions which are beyond the concept of abnormality dealt with in this standard (see 3.7.3 and 3.7.4); - rooms used for medical purposes; - commercial and industrial applications where only low pressure fuel gas is used for appliances e.g. for cooking, water heating and similar uses, where the installation is compliant with relevant gas codes; - domestic premises; - 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 (refer also IEC 60079-10-2). This second edition of IEC 60079-10-1 cancels and replaces the first edition, published in 2008, and constitutes a technical revision. The significant technical changes with respect to the previous edition are identified in the Foreward of the document. Keywords: ignition hazards, flammable gas or vapour, risk of explosions
英文名称Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres