ML21078A503

NRC Regulatory Information Conference (RIC) RIC 2021 Panel Session M5 Slides on Dynamic Probabilistic Risk Assessment (PRA)

ML21078A503
Person / Time
Issue date:	02/26/2021
From:	Gonzales M NRC/RES/DRA
To:
James Steckel
References
Download: ML21078A503 (6)

Text

Dynamic PRA Study Michelle M. Gonzalez U.S. Nuclear Regulatory Commission Office of Nuclear Regulatory Research Division of Risk Analysis

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Background===

• Dynamic PRA (DPRA) refers to probabilistic risk assessment (PRA) approaches that simulate system behavior and accident scenario development over time.

• DPRA has the potential to provide additional useful risk insights for operating plant design and operations.

TD TA Cue Diagnosis Action Simple Dynamic Model for Operator Action

Background (cont.)

• DPRA plays a major role in many university PRA research and development programs, and the U.S. Department of Energy is supporting significant national laboratory work.

• The NRC supported early DPRA efforts.

• The NRC is developing staff capabilities to prepare for a changing environment.

Dynamic PRA Study Objectives

• Prepare NRC staff for the efficient use of DPRA tools.

• Prepare NRC staff for future uses of PRAs developed using DPRA methods.

Scope

• Staff development (training)

• DPRA applications: development of simple models of dynamic processes for use in traditional PRA models Expected Outcome

• Better prepare staff to (1) oversee, develop, or review DPRAs in support of future licensing activities and (2) maintain awareness of a still-developing, cutting-edge PRA technology.

Dynamic PRA Study Approach

• Leverage available resources in DPRAThe staff will initially complete a literature review to leverage ongoing DPRA activities to identify methods, approaches, and available DPRA tools.

• Conduct staff development (training)The staff will participate in training exercises to develop capabilities to use the existing DPRA tools.

• Develop simple models using available toolsThe staff will develop hands-on modeling experience by using DPRA tools to develop a simple DPRA model.

Deliverables

• Interim report documenting literature review and DPRA activities

• Staff training on the use of DPRA tools

• Final report documenting DPRA model results

Questions?

Contact for more information:

Michelle Gonzalez Michelle.Gonzalez@nrc.gov