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This video is a presentation of the American Nuclear Society's Risk-informed, Performance-based Principles and Policy Committee (RP3C) Community of Practice held July 31, 2026. This talk "A Perspective on Systematic Risk Evaluations" by William Reckley, Consultant has been posted on YouTube at https://youtu.be/pfQwG63q5oo
This presentation for the Risk-Informed Performance-Based Community of Practice (COP) webinar featured Bill Reckley, a retired NRC employee who worked on Part 53 regulations. Bill presented on "Systematic Risk Evaluations" and their role in modernizing nuclear regulations, explaining how risk management principles have evolved over time and how systematic risk evaluations like probabilistic risk assessments (PRAs) can be used in combination with or as alternatives to traditional approaches. The presentation covered risk management processes, the development of NUREG 2150, and how Part 53 incorporates systematic risk evaluations through requirements in 10 CFR 53.450 for PRA or other systematic risk assessments.
Key Topics Addressed:
00:00 – What is the purpose of this series of CoP presentations?
01:09 – Why is the modernization of regulatory and standards development work important right now?
03:45 – How are recent regulatory activity addressing risk evaluation techniques?
04:41 – What are the speaker's (William Reckley) background and experience with systematic risk evaluations?
05:38 – What is risk management?
08:00 – How has risk management evolved across industries as the discipline has matured?
09:06 – How does ISO 31000 establish a systematic risk management approach?
11:01 – What is some of the history behind and details of NUREG 2150?
13:57 – What are some common principles between some well-known risk management approaches (ISO 31000, NUREG 2150, DHS)?
18:12 – How does risk analysis and risk evaluation impact deliberations and decisions?
21:17 – How was the risk management approach used in the drafting of early 10 CFR Part 53 versions?
24:08 – What sections of 10 CFR Part 53 specifically addresses risk analysis requirements and what are their requirements?
28:18 – What are some key risk management terms or concepts defined within 10 CFR Part 53?
30:52 – How does the risk analysis activities affect or inform the monitoring requirements in 10 CFR Part 53?
33:28 – What are some principles of ISO 31010 which can be used as a systematic risk evaluation (SRE) in lieu of a probabilistic risk assessment (PRA)?
34:45 – What are some examples of applying ISO 31010 in a systematic risk assessment?
38:59 – What is one example of a PRA alternative that was not incorporated into 10 CFR Part 53?
42:09 – What are some ongoing activities related to risk management that might influence regulatory decisions?
46:20 – Was NUREG 2150 specifically referenced or used by new DOE pilot programs? Has the NRC adopted some of the practices that DOE allowed?
49:19 – Has the speaker seen a valid, workable SRE alternative to the PRA approach proposed for a project?
51:03 – How will the pending ANS-2.26 standard address unmitigated release?
To learn more about ANS's RP3C Community of Practice visit American Nuclear Society's RIPB Website: https://www.ans.org/standards/rp3c/cop/
Slides from this and other CoP presentations can be downloaded from the RP3C site.
Enjoy!
Regards,
John