On the role of defense in depth in risk-informed regulation
Proceedings of PSA '99, International Topical Meeting on Probabilistic Safety Assessment, 1999, pp. 408–413
Abstract
Defense in depth is a nuclear safety strategy that emphasizes multiple levels of protection against accidents. The article discusses two different views on defense in depth: the structuralist view and the rationalist view. The structuralist view considers defense in depth as a fundamental value, while the rationalist view sees it as a means to compensate for uncertainties and incompleteness in the knowledge of accident initiation and progression. The article suggests a pragmatic approach of combining both views, using the structuralist view as the high-level guiding principle and the rationalist view at lower levels to address uncertainties in probabilistic risk assessment. – AI-generated abstract.
