1.1 本指南涵盖了确定技术救援设备和系统安全系数的一般概念。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 如果本指南的文本与引用的任何参考文献之间存在任何冲突，则以本指南的文本为准。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 本指南可用于为确定技术救援设备和系统的负载比提供一致的方法。 3.2 使用本指南将有助于保持更清晰、更一致的负荷比计算和报告。 3.3 应该承认，虽然部件负载比的计算相当简单，但它们对于估计系统负载比的价值有限。现场应用通常需要系统负载比，但更难准确计算。

1.1 This guide covers the general concept of determining safety factors for technical rescue equipment and systems. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 In the event of any conflict between the text of this guide and any references cited, the text of this guide takes preference. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 This guide may be used to provide a consistent method for determining load ratios for technical rescue equipment and systems. 3.2 Use of this guide will help to maintain clearer, more consistent calculation and reporting of load ratios. 3.3 It should be acknowledged that, while component load ratios are fairly straightforward to calculate, they are of limited value for estimating system load ratios. System load ratios are usually desired for field applications, but are more difficult to calculate accurately.