Abstract
To ensure integrity of structures and components in nuclear power plants, the demand has been increased for
establishing nondestructive method for detection of pre-existing plastic strain. In this study, we examined
applicability of potentiostatic etching method, which developed in our past paper, for actual austenitic steel
components. On etching condition, solution temperature is one of the critical parameter. Thus this method
should be conducted at a constant temperature between 30°C -40°C. Using replica method, etched grooves on
specimen surface can be transferred with high accuracy. Measurement process of electropolish and
potentiostatic etching method for actual structure with potable probe and replica method is also presented.
