| 摘要 |
PROBLEM TO BE SOLVED: To achieve accuracy improvement in soundness evaluation, and to provide a proper maintenance countermeasure on the basis of the result of the soundness evaluation.SOLUTION: A soundness evaluation system 10 of a nuclear power plant includes: a stress distribution calculation part 11 which calculates the stress distribution of continuous residual stress from an inner face to a surface of a structure of evaluating soundness, and outputs the calculated stress distribution and a specified crack occurrence point when occurrence of crack is determined on the basis of the stress distribution; a crack development prediction part 12 which performs a prediction of crack development from the crack occurrence point; and a soundness maintenance part 13 which has a maintenance database 15 in which crack development prediction results and maintenance countermeasures are associated with each other, and which reads a maintenance countermeasure corresponding to a crack development prediction result from the maintenance database 15 and presents read maintenance information to a user. |
