1.1 该试验方法建立了在60至130 kVp的加速电位下测量保护材料对X射线衰减的程序。 1.2 该测试方法提供了主光束X辐射的衰减值。 1.3 本试验方法适用于含铅和不含铅辐射防护服材料。 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）。本标准的使用者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》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 本试验方法旨在提供保护材料的标准化试验程序，以确保制造商和用户之间的结果具有可比性。 5.2 该测试方法包括测量防护服材料在60和130kVp之间的加速电位（kVp）下对X射线的衰减。这些能量被认为是医学诊断过程中常用的能量的代表。 5.3 报告特定X射线能量下的衰减旨在允许最终用户组织评估防护服材料在该能量水平下的衰减特性。

1.1 This test method establishes procedures for measuring the attenuation of X-rays by protective materials at accelerating potentials from 60 to 130 kVp. 1.2 This test method provides attenuation values of primary beam X-radiation. 1.3 This test method applies to both leaded and non-leaded radiation protective clothing materials. 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 ====== 5.1 This test method is intended to provide a standardized test procedure of protective materials to ensure comparable results among manufacturers and users. 5.2 This test method involves measurement of the attenuation of X-rays by protective clothing material at an accelerating potential (kVp) between 60 and 130 kVp. These energies are considered to be representative of those commonly used during medical diagnosis. 5.3 The reporting of the attenuation at a specific X-ray energy is intended to allow the end user organization to assess the attenuating properties of the protective clothing material at that energy level.