PASCAL-ECを用いた減肉配管のフラジリティ評価


英字タイトル:
Fragility Evaluation of Wall-thinned Pipes Using PASCAL-EC
著者:
山口 義仁 Yoshihito YAMAGUCHI
発刊日:
公開日:
カテゴリ: 第12回
キーワードタグ:

概要

A probabilistic analysis code PASCAL-EC (PFM Analysis of Structural Components in Aging LWR - Erosion and Corrosion) has been improved for evaluating structural integrity of wall-thinned pipes on the basis of the Monte Carlo method. In order to perform the fragility evaluation for wall-thinned pipes, several functions are introduced to PASCAL-EC in this work, such as a probabilistic evaluation model to consider the uncertainty of seismic response stress, a simple evaluation model to considered the increase of the seismic stress due to wall thinning and failure evaluation methods for wall-thinned pipes . This paper provides some details of these models and preliminary results of fragility evaluation using the improved PASCAL-EC for wall-thinned pipes in nuclear power plants.


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