Length: 1 days
Regulatory authorities in the U.S. and elsewhere are increasingly resorting to risk-informed licensing and decision making in the operation of nuclear power facilities (e.g., USNRC Regulations Part 50.69). The risk-informed applications include, but are not limited to, licensing basis (LB) changes that address design, modification, and operation (such as in-service testing and surveillance, technical specifications, etc. that require regulatory approval. One key principle involved in such risk-informed applications is that the proposed increases in the core damage frequency (CDF) and risk to public safety (measured in terms of large early release frequency, or LERF) is held to a minimum.
The CDF and LERF resulting from the proposed changes to the LB need to address, in part, beyond design basis events (BDBE), both internal and external events. The Regulatory authorities may also require evaluation of BDBE when considering any new hazard information that becomes available. Such was the case with the evaluation of nuclear power plants during the period post-Fukushima Accident (2011). This resulted in nuclear plants in the U.S. and elsewhere having to perform an evaluation of plant Systems, Structures, and Components (SSC’s) to the postulated design basis earthquake and flooding events.
This MasterClass reviews typical plant design basis and beyond design basis considerations, including the design acceptance criteria, configuration management, and quality assurance. The assessment of BDBE using probabilistic and deterministic methods, as well as lessons learned from recent Seismic PRAs are reviewed. The course also addresses the treatment of BDBE in risk-informed applications. Typical examples of BDBE are presented, highlighting the differences in the design approaches between DBE and BDBE.
You will learn to
- Evaluate differences between plant design basis and beyond design basis events
- Examine lessons learned from the 2011 Fukushima Accident and the current U.S. NRC orders affecting evaluation/upgrade of nuclear plants
- Apply appropriate design and acceptance criteria for design basis and beyond design basis events in plant design/modifications
- Differentiate the treatment of BDBE in risk-informed applications using probabilistic and deterministic methods
Click HERE to review the course outline.
Who Should Attend
This MasterClass is intended for nuclear power plant staff engineers, designers, equipment vendors, and regulators who desire a practical understanding of the differences between Design Basis Events (DBE) and Beyond Basis Events (BDBE), particularly external events such as seismic and flooding, applicable to Nuclear Power Plants.
Participants are encouraged to bring examples of particularly challenging issues encountered on the job for in-class discussion.
This MasterClass is structured on the assumption that participants have a basic knowledge of ASME and other Industry Nuclear Codes & Standards.
For venue information, please click HERE.