1.1 本指南为制定监督测试计划提供了指导，以监测水池环境中维持核燃料贮存架亚临界状态所需的硼基中子吸收材料系统（吸收器）的性能。本指南中介绍的实践在实施时将提供一个全面的监督测试程序，以验证贮存架内中子吸收材料的功能性和完整性。监督测试计划的实施为高密度核燃料储存设施的安全有效运行提供了额外的保证。硼基中子吸收材料的监督测试有几种不同的技术。本指南侧重于试片监测和现场测试。 1.2 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。 1.3 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====== 4.1 在高密度贮存架中贮存核燃料取决于贮存的燃料组件之间吸收器的功能和完整性，以确保贮存配置的反应性不超过适用法规允许的K-有效值。可能需要进行确认测试，以验证机架内吸收器的功能和完整性。如果对燃料架中新安装或现有的吸收体材料制定监督计划，建议采用以下方法:( 一 )优惠券监控计划（如果优惠券可用）( b )现场中子衰减试验，以及( c )其他适用的现场测试，如目视检查或阻力测试。 4.2 本指南为制定和实施监测计划提供了指导，以监测吸收器的持续功能和完整性。

1.1 This guide provides guidance for establishing a surveillance test program to monitor the performance of boron-based neutron absorbing material systems (absorbers) necessary to maintain sub-criticality in nuclear fuel storage racks in a pool environment. The practices presented in this guide, when implemented, will provide a comprehensive surveillance test program to verify the functionality and integrity of the neutron absorbing material within the storage racks. The performance of a surveillance test program provides added assurance of the safe and effective operation of a high-density storage facility for nuclear fuel. There are several different techniques for surveillance testing of boron-based neutron absorbing materials. This guide focuses on coupon monitoring and in-situ testing. 1.2 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. 1.3 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 ====== 4.1 The storage of nuclear fuel in high-density storage racks is dependent upon the functionality and integrity of an absorber between the stored fuel assemblies to ensure that the reactivity of the storage configuration does not exceed the K-effective allowed by applicable regulations. A confirmation test may be required to verify the functionality and integrity of the absorber within the racks. If establishing a surveillance program for newly installed or existing absorber material in fuel racks, the following methods are suggested: ( a ) coupon monitoring program (if coupons are available), ( b ) in-situ neutron attenuation test, and ( c ) other applicable in-situ tests such as visual inspection or drag test. 4.2 This guide provides guidance for establishing and conducting a surveillance program for monitoring the ongoing functionality and integrity of the absorbers.