THE DEVELOPMENT OF A DIAGNOSTIC AND MONITORING-SYSTEM FOR VIBRATING PIPE BRANCHES

This paper deals with a diagnostic and monitoring system for assessing the integrity of pipe branches, during the operation of the nuclear p ower plant. This system have been developed under the concept of ''eas y to use without any sophisticated analysis'' and ''portable''. The ac curacy of the diagnosis is based on the model optimization subsystem, which automatically modifies the numerical vibration model so as to fi t its natural frequency to the actual natural frequency. The informati on obtained by this system may be reflected to a maintenance program o f the plant to assure more reliable operation of the plant.