EC 60079-19:20 19对设计用于爆炸性环境的设备的维修、大修、回收和改造给出了主要是技术性质的说明；它不适用于维护，除非维修和大修不能与维护分开，也不就重新安装设备时可能需要更新的电缆进入系统提供建议。 第四版取消并取代了2010年发布的第三版以及修正案1:20 15。本版构成技术修订版。 在前言中定义了IEC 60079-19第3版（2010年）（包括修正案1（2015年））和IEC 60079-19第4版（2019年）之间变更的意义，涵盖了微小和编辑变更、扩展和重大技术变更。

EC 60079-19:2019 gives instructions, principally of a technical nature, on the repair, overhaul, reclamation and modification of equipment designed for use in explosive atmospheres; it is not applicable to maintenance, other than when repair and overhaul cannot be disassociated from maintenance, neither does it give advice on cable entry systems which may require a renewal when the equipment is re-installed.
This fourth edition cancels and replaces the third edition published in 2010 together with Amendment 1:2015. This edition constitutes a technical revision.
The significance of the changes between IEC 60079-19, Edition 3 (2010), including Amendment 1 (2015), and IEC 60079-19, Edition 4 (2019) are defined in the foreword and cover minor and editorial changes, extension, and major technical changes.