Development of a Testing and Analysis Methodology to Determine the Functional Condition of Solenoid Operated Valves.

摘要

The report describes the Phase I SBIR research conducted to develop and test a technique to determine the functionality of solenoid operated valves (SOVs) in a nuclear plant based on the measurement and analysis of inrush current. The technique developed uses a clip-on current probe, thus enabling all measurements to be made from outside the reactor building without disturbing any electrical connections. The inrush current to the solenoid operated valve is analyzed in real time using a personal computer and Fast Fourier Transform (FFT) techniques.