配管減肉による配管損傷確率の評価手法の検討


英字タイトル:
Development of evaluation method of pipe failure frequency due to wall thinning
著者:
森田 良 (電中研)
発刊日:
公開日:
カテゴリ: 第17回
キーワードタグ:

概要

For the quantitative evaluation of importance of maintenance and management to the piping in the turbine system and the feedwater system, an evaluation method of the piping failure frequency due to wall thinning, one of the major aging phenomena in the secondary and BOP systems, were developed. Based on the uncertainty of the thinning rate, initial thickness and material strength, frequency of the piping failure was evaluated probabilistically. As a trial evaluation, the difference of the failure frequency between the main steam system and the feedwater system was evaluated under assumption of no wall thinning management.


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