Modeling and Evaluation of the Aging and Degradation Process

Abstract

This paper considers the methodology for the evaluation of aging and degradation of equipment during the designed operational lifecycle. Conclusions are applicable when extending the designed operational lifecycle of nuclear power plants and facilities with long operational lifecycle (30 years or more). Analysis of possible mechanisms of aging of equipment is carried out. As an example, the evaluation of aging and degradation of sealed enclosure system of nuclear power plant localizing safety system is shown. The conservative methods of evaluation of the arising stresses are applied.