Development of measuring technology for the analysis of the flow-induced vibration of construction elements at nuclear power plants

As a preparation for oscillation measurements to be carried out at the Paks Nuclear Power Plant, the measuring of high frequency signals and the digital evaluation of the measured signals are dealt with. The program systems developed to process the quickly alternating signals are presented. The measuring technique ensures a reliable detection of high frequency time signals as well as their off-line evaluation performed by a digital computer. The test investigation of the measuring chain has been carried out by measurement of pressure fluctuation. (author)