BS 9991于2011年首次发布，与BS 9999并驾齐驱。BS 9991:2011发布后，其前身BS 5588-1:1990被撤销。 BS 9991:2015的布局和内容已进行了调整，但仍与标准非常相似 前一版本——描述与其预期用途相关的规定性指标的概念仍然是本标准的核心部分。2015年版澄清了之前未充分详细说明的防火措施领域，或者由于随后发布的其他参考标准而发生了更改。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。

BS 9991 was first published in 2011 and sat alongside BS 9999. Upon publication of BS 9991:2011, its predecessor BS 5588-1:1990 was withdrawn. The layout and content of BS 9991:2015 has been restructured but remains very similar to the previous version — the concept of describing indicators of a prescriptive nature relating to their intended use remains a core part of the standard. The 2015 edition clarifies areas of fire precautions which previously were either not detailed sufficiently or changed due to the subsequent publication of other standards referenced.All current amendments available at time of purchase are included with the purchase of this document.