Report a Safety Concern
Search

The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

Home NRC Library Document Collections NUREG-Series Publications Publications Prepared by NRC Contractors

Issues and Recommendations for Advancement of PRA Technology In Risk-Informed Decision Making (NUREG/CR-6813)

On this page:

Download complete document

Publication Information

Manuscript Completed: January 2003
Date Published: April 2003

Prepared by:
Karl N. Fleming
Technology Insights
6540 Lusk Boulevard, Suite C-102
San Diego, California 92121

H.P. Nourbakhsh, NRC Project Manager

Prepared for:
Advisory Committee on Reactor Safeguards
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

NRC Job Code B1564

Availability Notice

Abstract

The purpose of this report is to assess the adequacy of probabilistic risk assessment (PRA) for use in regulatory decisions and provide recommendations for its advancements. The insights and recommendations documented in this report were developed by conducting interviews, examining case studies in risk-informed regulation, and by applying experience in developing and applying PRA technology and participating in PRA peer reviews. A number of insights were developed from the review of the recent Davis-Besse vessel head degradation and previous risk-informed and deterministic safety evaluations of the Alloy 600 nozzle cracking issue. Using the author's experience in performing and reviewing several of the existing industry PRAs, a number of technical issues were identified that help defines the current state of the art in PRA technology. The results and conclusions of this report include a number of recommendations intended to resolve some of the issues that were identified and to advance the use of PRAs in risk-informed decision making.

Page Last Reviewed/Updated Wednesday, March 24, 2021