Eddy current inner transducer with rotating magnetic field: application to PHWRs pressure tubes

For the inspection the pressure tubes from PHWRs nuclear power plant an eddy current transducer with rotating magnetic field were improved. This paper presents this transducer and the equipment used. To detect the garter springs position, a neuro-fuzzy system trained with artificial data obtained from an analytical model using dyadic Green's function and afferent numerical code is used. Here, the results of pressure tubes sample inspection, emphasising position, localisation and shapes of slots are presented.