Patent ID: 7774149
Filing Date: 2010-08-10
Classification: F22B,G01M,G21C,Y02E

Abstract:
1. A water leakage-acoustic sensing method in a steam generator of a sodium-cooled fast reactor, the method implemented by a computer, comprising: calculating a standard deviation and an average of an octave band by octave band analysis of an input signal sound received from at least one predetermined acoustic sensor; comparing the calculated standard deviation and the calculated average of the octave band, and determining a size of the octave band based on a comparison result; calculating an average of standard deviations of the octave band recomposed by the determined size and normalizing the average of standard deviations; applying a predetermined weight, established by a predetermined neural network learning algorithm, to the normalized average of standard deviations; and generating leakage determination data based on the average of standard deviations to which the weight is applied.