Perspectives of Commercial Nuclear Power Plant Risks for External Events

The events of this year alone have highlighted the impact that natural phenomena (so called external events) can have on critical infrastructure and commercial nuclear power plants in particular. The design of commercial nuclear power plant structures, systems and components has taken into account the effect of loads due to external events such as earthquakes, floods, high winds and tornados. However, the original approach for establishing design levels was based on deterministic methods that today would be viewed as short-sighted and scientifically inadequate. This talk will offer perspectives and insights on NPP design and performance, evaluation of so-called extreme events, and how evaluations of potential core damage accidents are performed. The approach and process of evaluating plant integrity and safety continues to evolve; in part this is attributable to a degree to the vigilance that is maintained by the industry, but is also due to ‘current events’ that demand attention (new science, Fukashima experience, Fort Calhoun flood experience, Virginia earthquake, etc.).

About the speaker: Dr. McCann is currently the President of Jack R. Benjamin & Associates, Inc., a Consulting professor of Civil and Environmental Engineering at Stanford University and Director of the National Performance of Dams Program (NPDP). He received his B.S. in civil engineering from Villanova University in 1975, an M.S. in civil engineering in 1976 from Stanford University and his Ph.D. in 1980, also from Stanford University.

His areas of expertise and professional experience includes probabilistic risk analysis for civil infrastructure facilities and, probabilistic hazards analysis, including seismic and hydrologic events, reliability assessment, risk-based decision analysis, systems analysis, and seismic engineering. He currently teaches a class on critical infrastructure management in the civil and environmental engineering department.

He has been involved in probabilistic risk studies for nuclear power plants since the early 1980’s and is now participating in a new round of risk studies for plants in the U.S. Recently, Dr. McCann led the Delta Risk Management Strategy project that is conducting a risk analysis for over 1100 miles of levee in the Sacramento and San Joaquin Delta. He was also a member of the U.S. Army Corps of Engineers’ IPETRisk and Reliability team evaluating the risk associated with the New Orleans levee protection system following Hurricane Katrina.

He is currently serving on 2 National Academy of Sciences panels addressing issues associated with levees and community resilience and the National Flood Insurance Program.