BS EN ISO 22301:2019的本次修订澄清了2012版的要求，并使其高层结构与其他ISO管理体系标准保持一致。需要注意的是，BS EN ISO 22301:2019并未引入任何新要求，乍一看可能会消除之前包含的要求。事实上，这些要求已经被重申，以使其更加清晰，引入了新的术语，并删除了不必要的术语。该标准还进行了重组，以更清晰地描述管理体系和技术要求，并纳入ISO/IEC指令第2部分中规定的国际标准结构和起草的最新原则和规则。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This revision of BS EN ISO 22301:2019 clarifies the requirements of the 2012 edition and aligns its high-level structure with other ISO management systems standards. It is important to note that BS EN ISO 22301:2019 does not introduce any new requirements, and at first sight may appear to eliminate requirements that were previously included. In reality, the requirements have been restated to make them clearer, new terminology has been introduced, and unnecessary terms have been eliminated. The standard has also been restructured to delineate management system and technical requirements more clearly and incorporate the latest principles and rules for structuring and drafting International Standards set out in the ISO/IEC Directives Part 2.All current amendments available at time of purchase are included with the purchase of this document.