註釋 A wide variety of diagnostic monitoring techniques have recently been developed for application to nuclear reactors, power plants, process systems and rotating machinery in a worldwide effort to improve the reliability, maintainability and safety of operating equipment. although some of these techniques have already been exploited by candu plants, there are others available that may be equally beneficial. to facilitate the application of diagnostics to candu systems, a broad ranging literature survey has been carried out to identify techniques that are presently in operation or are being developed, internationally. a number of well-developed diagnostic techniques were identified in the areas of vibration monitoring, motor current signature analysis, acoustic leak detection, reactor noise monitoring, wear monitoring, oil analysis, temperature monitoring, valve testing, water chemistry monitoring, electrical system diagnosis, monitoring pressure boundary integrity, flowmetering and machine (computer) assisted systems for diagnostics. each of these areas has been reviewed in detail and general conclusions have been reached as to the state-of-the-art and applicability to candu. industry wide trends were noted towards large systems, capable of integrating information from numerous sensors of different types and central technical organizations, responsible for providing plant operators with prompt interpretations of diagnostic information. a database of diagnostic monitoring systems is available that may be searched in various ways including: diagnostic method; continuous or periodic monitoring; utility equipment monitored; process, performance or condition monitoring; relevance to candu systems; etc. 