Application of Risk-Informed Validation Framework to a Flooding Scenario
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 7, Issue 4
Abstract
In recent years, the use of advanced simulation tools for modeling the behavior of flooding at a nuclear power plant has gained significant importance. The credibility of advanced simulation codes is assessed using formal approaches for verification and validation. In this manuscript, a formal risk-informed validation approach is proposed that provides a basis to quantify credibility of system-level risk assessments. The credibility of system-level validation is represented using a probabilistic metric and maturity levels. The novelty of the proposed approach lies in the integration of risk-informed validation approach with the US Nuclear Regulatory Commission’s (USNRC) Evaluation Model Development and Assessment Process (EMDAP) framework. This allows transformation of EMDAP into a risk-informed EMDAP. The applicability of the proposed framework is evaluated by application to a flooding scenario of a sunny-day dam failure. Application to the flooding scenario illustrates that the credibility of flooding simulations can be assessed using formal quantification, which is otherwise not possible in the existing EMDAP framework.
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Data Availability Statement
All of the data, models, and/or code that support the findings of this study are available.
Acknowledgments
This research was partially supported by US DOE under the grant DE-NE0008530. In addition, this research was partially supported by Center for Nuclear Energy Facilities and Structures at NC State University. Resources for the Center come from the dues paid by member organizations and from the Civil Engineering Department and College of Engineering.
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Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 7 • Issue 4 • December 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Oct 14, 2020
Accepted: May 6, 2021
Published online: Jul 27, 2021
Published in print: Dec 1, 2021
Discussion open until: Dec 27, 2021
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