モデル・データ・検査技術融合に基づく炉内材料劣化に関する研究開発
Integration of modeling, database and inspection technique for the prediction of the material behavior under irradiation
著者:
沖田 泰良 Taira OKITA 関村 直人 Naoto SEKIMURA 礒部 仁博 Yoshihiro ISOBE
発刊日:
公開日:
databaseinspection techniquesirradiationphysical modelstructural materials
概要
The recent situation of nuclear power generation gradually requires not only the economic viewpoint but also even greater efforts in accurate evaluations on safety and availability issues. Accordingly, assessments on the integrity of structural components are critical both now and in the future. Structural materials which suffer from age-related degradations especially should have methods to evaluate degradations due to changes in material properties. It is clear that conventionally used extrapolations of phenomena have restrictions and limitations when evaluating the integrity of structural materials. In the age-related process in the future where no proven data exist, we need to evaluate the structural integrities in parallel with the service of the struc tural materials. In such conditions, it would be expected that the following four technical issues must be solved. (1) To understand behaviors of structural components in service and to make clear new potential problems associated with the further service period. (2) To identify the present states and future tasks of inspection techniques which evaluate the integrity of structural materials and accumulate the database of age-related degradations. (3) Establishing “data model” to apply the existing database to understand the material behavior under the conditions where no proven radiation data exists. At the same time, establishing physical simulation models strategically in the “data model”. (4) To show a vision of collaborations for the above technologies.
