1.1 本规程根据美国联邦法规第71部分第10篇（10CFR71）或国际原子能机构条例SSR-6，定义了“B类”放射性材料包装的详细热鉴定方法。根据这些规定，运输指定为B类数量放射性材料的包装应证明能够承受一系列假设事故，而不会发生重大内容物泄漏。 1.2 在向认证机构提交信息之前，应商定用于热鉴定的单位制（国际单位制或英制）。如果国际单位制是标准的，则使用 IEEE/ASTM SI-10 . 括号中的其他单位仅供参考。 1.3 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。 1.4 本标准用于测量和描述材料、产品或组件在受控条件下对热量和火焰的响应，但其本身并不包括在实际火灾条件下对材料、产品或组件进行火灾危险或火灾风险评估所需的所有因素。 1.5 防火测试本身就很危险。在进行这些测试时，应采取适当的人员和财产保护措施。 1.6 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 本规程的主要目的是为申请人和认证机构提供一份通用参考文件，说明完成包装热鉴定的公认规程。本文件详细描述了完成资格认证的细节和方法，比法规中提供的更为详细。强调了经验证明能够成功进行资格认证的方法。还描述了可能导致不满意结果的问题和陷阱。 5.2 本标准实施规程中所述的工作应根据质量保证计划进行，该计划由认证包装使用的监管机构接受。对于在美国认证的包装，10 CFR 71 H子部分应作为质量保证（QA）计划的基础，而对于国际认证，ISO 9000通常定义了适当的计划。 在开始任何物理或分析测试活动之前，以及在向认证机构提交任何信息之前，质量保证计划应到位并发挥作用。

1.1 This practice defines detailed methods for thermal qualification of “Type B” radioactive materials packages under Title 10, Code of Federal Regulations, Part 71 (10CFR71) in the United States or, under International Atomic Energy Agency Regulation SSR-6. Under these regulations, packages transporting what are designated to be Type B quantities of radioactive material shall be demonstrated to be capable of withstanding a sequence of hypothetical accidents without significant release of contents. 1.2 The unit system (SI metric or English) used for thermal qualification shall be agreed upon prior to submission of information to the certification authority. If SI units are to be standard, then use IEEE/ASTM SI-10 . Additional units given in parentheses are for information purposes only. 1.3 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. 1.4 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions. 1.5 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.6 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 major objective of this practice is to provide a common reference document for both applicants and certification authorities on the accepted practices for accomplishing package thermal qualification. Details and methods for accomplishing qualification are described in this document in more specific detail than available in the regulations. Methods that have been shown by experience to lead to successful qualification are emphasized. Possible problems and pitfalls that lead to unsatisfactory results are also described. 5.2 The work described in this standard practice shall be done under a quality assurance program that is accepted by the regulatory authority that certifies the package for use. For packages certified in the United States, 10 CFR 71 Subpart H shall be used as the basis for the quality assurance (QA) program, while for international certification, ISO 9000 usually defines the appropriate program. The quality assurance program shall be in place and functioning prior to the initiation of any physical or analytical testing activities and prior to submittal of any information to the certifying authority.