This International Standard contains requirements for application of the IEC/IEEE 62582-series of methods for condition monitoring in electrical equipment important to safety of nuclear power plants. It also includes requirements which are common to all methods. The IEC/IEEE 62582-series of standards specify condition monitoring methods in sufficient detail to enhance the accuracy and repeatability, and provide standard formats for reporting the results. The methods specified are applicable to electrical equipment containing organic or polymeric materials. Some methods are especially designed for the measurement of condition of a limited range of equipment whilst others can be applied to all types of equipment for which the organic parts are accessible. Although the scope of the standards in the IEC/IEEE 62582-series is limited to application of instrumentation and control systems important to safety, the condition monitoring methods may be applicable also to other components which include organic or polymeric materials. Standards in the IEC/IEEE 62582-series are measurement standards, primarily for use in the management of ageing in initial qualification and after installation. For technical background of condition monitoring methods, reference is made to other IEC standards, e.g. IEC 60544-5. Information on the role of condition monitoring in qualification of equipment important to safety is found in IEEE Std 323. General information on management of ageing can be found in IEC 62342 and IEEE 1205. NOTE - The procedures defined in the IEC/IEEE 62582-series are intended for detailed condition monitoring. A simplified version of the procedures may be appropriate for preliminary assessment of the need for detailed measurements.