电绝缘材料.确定电离辐射的影响.第5部分:在使用过程中的老化评定方法

[中文适用范围]： 范围和对象 IEC 60544 的这一部分涵盖了可应用于暴露于辐射环境中的基于聚合物材料的组件（例如电缆绝缘和护套@弹性体密封件@聚合物涂层@护腿）的老化评估方法。本标准的目的是提供使用中老化的评估方法。以下条款中讨论的方法涵盖基于状态监测 (CM) 的老化评估程序@在恶劣环境中使用样本沉积物以及实时老化组件采样。 [外文原描述]： IEC 60544-5:2011 covers ageing assessment methods which can be applied to components based on polymeric materials (e.g. cable insulation and jackets, elastomeric seals, polymeric coatings, gaiters) which are used in environments where they are exposed to radiation. The object of this standard is aimed at providing methods for the assessment of ageing in service. The approaches discussed in the following clauses cover ageing assessment programmes based on condition monitoring (CM), the use of sample deposits in severe environments and sampling of real-time aged components. This second edition cancels and replaces the first edition, published in 2003, and constitutes an editorial revision to align it with standards recently developed by SC 45A as well as with other parts in the IEC 60544 series.