システム安全評価への今後の対応
Future Subject for Its Application to Plant System Safety Analysis
著者:
内藤 正則 Masanori NAITOH 内田 俊介 Shunsuke UCHIDA 岡田 英俊 Hidetoshi OKADA 鈴木 洋明 Hiroaki SUZUKI 越塚 誠一 Seiichi KOSIZUKA
発刊日:
公開日:
computer programflow-accelerated corrosiongeometrical factormass transfer coefficientrisksystem safety analysiswall thinning
概要
For application of the FAC code to system safety analysis, a 1D FAC code was developed by applying 1D mass transfer coefficients and geometry factors, which could prepare for not only the probability of serious wall thinning occurrence but also a hazard scale for pipe rupture could be analyzed. FAC risk was defined as the mathematical product of the possibility of wall thinning occurrence and its hazard scale. The local maximum thinning rate could be predicted with accuracy within a factor of 2 with the 1D FAC code. By applying probabilistic evaluation of FAC risk through entire plant based on 1D FAC code, propagation of elemental anomalies to reactor core damage can be analyzed to evaluate safety margin of each plant under miscellaneous anomaly conditions.
