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概要

study evaluates the probability of the errors in evaluation of length and depth of ly current testing signals measured in inspections of a steam g enerator tubes in lants. Numerous numerical simulations are performed to establish database e number of defect profiles and corresponding eddy cur rent signals; then the or is calculated as a function of the difference in signals using the databases. is study clarify that the eddy current inv ersion in the configuration is not so Abstract This study evaluates the probability of the errors in evaluation of length and depth of a defect fr om eddy current testing signals measured in inspections of a steam generator tubes in nuclear power plants. Numerous numerical simulations are per formed to establish database containing a large number of defect profiles and corresponding eddy current signals; then the probability of error is calculated as a function of the difference in signals using the databases. The results of this study clarify that the eddy current inversion in th e configuration is not so ill-posed. Furthermore, this study enables one to evaluate the probabilistic assessment eddy current inversion results.

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