1.1 本试验方法涵盖了测量绳索救援保护系统性能的跌落试验程序。它仅适用于由将负载连接到锚定保护装置的无张力绳索组成的保护系统。该测试方法不涉及其他类型的保护装置，例如自保护装置或铅爬保护装置，也不测试救援人员的保护能力。 1.2 该测试方法可用于帮助测量在受控跌落测试条件下救援保护系统的性能，但它不一定会提供关于哪种保护方法最适合特定应用的指导。其他考虑因素，如易操作性、不同类型和直径的绳索的性能、便携性、多功能性、系统安全系数、成本和不需要保护者积极行动的自动操作，可能会影响保护者系统的选择，本试验方法中不涉及。看见 X1.1 . 1. 3. 以国际单位制表示的数值应视为标准值。 1.4 本标准可能涉及危险材料、操作和设备。本标准并非旨在解决与其使用相关的所有安全问题。使用本标准的人有责任在使用前咨询并建立适当的安全、健康和环境实践，并确定监管限制的适用性。 本试验方法的其他注意事项见 8.1 和 8.2 . 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====== 5.1 本试验方法适用的绳索救援系统类型使用张紧主线和无张紧保护线。 如果由于主线系统故障或误用而发生坠落，则必须通过确保装置吸收大量能量才能成功抓捕。当系统按设计运行时，该跌落测试方法模拟“最坏情况”条件，旨在帮助评估和比较各种绳索救援保护系统在此类条件下的性能。（参见 注1 .) 成功捕获负载并不意味着测试系统适用于任何和所有保护。看见 X1.2 . 注1: 在某些情况下，可能会遇到更大的力，例如在过度松弛的情况下操作保护装置。

1.1 This test method covers drop test procedures to measure rope rescue belay system performance. It applies only to belay systems consisting of an untensioned rope connecting the load to an anchored belay device. This test method does not address other types of belays, such as self-belays or belays for lead climbing, nor does it test the rescuer's belaying ability. 1.2 This test method may be used to help measure a rescue belay system's performance under controlled drop test conditions, but it will not necessarily provide guidance as to which belay method is most suited to a particular application. Other considerations, such as ease of handling, performance on different types and diameters of rope, portability, versatility, system safety factor, cost, and automatic operation that do not require the positive action of the belayer may influence the selection of a belay system and are not dealt with in this test method. See X1.1 . 1.3 The values stated in SI units are to be regarded as standard. 1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Additional precautions for this test method are given in 8.1 and 8.2 . 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 ====== 5.1 The types of rope rescue systems to which this test method apply use a tensioned mainline and untensioned belay line. If a fall occurs because of a mainline system failure or misuse, considerable energy must be absorbed by the belay for a successful arrest. This drop test method simulates a “worst case” condition when systems are operated as designed, and is designed to help evaluate and compare the performance of various rope rescue belay systems under such conditions. (See Note 1 .) The successful catching of a load does not imply that the tested system is suitable for any and all belaying. See X1.2 . Note 1: Higher forces may be encountered under some circumstances, such as the belay being operated with excessive slack.