Replaces IEC 272. Covers the selection and implementation of reliability and maintainability activities, appropriate to each of the defined phases of the life of electrotechnical products. Provides management guidelines for establishing reliability and maintainability programmes applicable in varying degrees to the complete life cycle of electrotechnical products. Serves as a general standard linking the various IEC publications on technical aspects of reliability and maintainability. Procedures are applicable to large organizations as well as to small companies. Also applies to manufacturers and users of products ranging from major systems to components.