Summary report of the International Workshop on Multi-Unit Probabilistic Safety Assessment
An abstract of the summary report for:
The International Workshop on Multi-Unit Probabilistic Safety Assessment
November 17–20, 2014
Yolande Akl1 and Karl Fleming2
1Canadian Nuclear Safety Commission, Ottawa, ON, Canada
2KNF Consulting Services LLC, Spokane, WA, USA
The Canadian Nuclear Safety Commission (CNSC) hosted the International Workshop on Multi-Unit Probabilistic Safety Assessment (MUPSA) in Ottawa, from November 17 to 20, 2014. Invitees included eminent international experts (regulators, academics, consulting organizations and industry leaders) to share their experience on the topic of MUPSA and site-based safety goals.
Among the many prestigious PSA experts from around the world who attended were staff representing the Working Group on Risk Assessment, the International Atomic Energy Agency and the United States Nuclear Regulatory Commission.
Overall, 117 participants from 14 countries and the IAEA attended the workshop and it provided an excellent forum for all to share new ideas and experiences with the objective of developing a methodology for MUPSA and whole-site safety goals. The workshop also provided the opportunity for international experts to evaluate the state-of-the-practice in assessing the risks from multi-unit stations.
A total of 36 presentations were made during the four technical sessions, covering all of the thematic areas of the workshop. Each technical session was followed by a one-hour guided discussion.
Main topics covered during the workshop included:
- methodological challenges in performing MUPSAs
- site-based risk metrics
- challenges in establishing safety goals for whole sites
- risk aggregation across all units and all hazards
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