United States Nuclear Regulatory Commission - Protecting People and the Environment

Cross-Cutting Activities

This list shows the ongoing licensing initiatives, projects, and activities that the staff of the U.S. Nuclear Regulatory Commission (NRC) has targeted for greater use of risk information that substantially crosscut multiple subarenas within the Reactor Safety Arena:

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Risk-Informed Steering Committee (RISC)

Summary Description

The NRC's RISC is an NRC senior management committee that provides strategic direction to the NRC staff to advance the use of risk-informed decision-making in licensing, oversight, rulemaking, and other regulatory areas, consistent with the Commission's PRA Policy Statement. The NRC's RISC is chaired by the Director of NRR, with membership of Deputy Office Directors from NRO, RES, NRR, NSIR, and NMSS, as well as the Region I Regional Administrator. The NRC RISC has held several public meetings with the industry's own RISC. The industry's RISC is a counterpart to the NRC RISC with its membership comprised of licensee chief nuclear officers and other senior level executives, as well as representation from the Nuclear Energy Institute (NEI). The NRC and industry each agreed to form two working groups that will focus on guidance in two selected areas related to PRA technical adequacy and dealing with uncertainties in risk-informed decision-making. Additional information is available.

FY 2015 Status

The NRC RISC held multiple public meetings with the industry RISC to receive updates on the working groups' status and to discuss other risk-informed initiatives. The industry working groups developed white papers outlining gaps in current processes and the actions to close those gaps. The NRC held public meetings to discuss the review of the white papers and provided comments to the industry. The NRC working groups will each issue a memorandum to the RISC with recommended actions to close gaps identified in the white papers. The actions will be completed by the appropriate line organization in accordance with normal work practices. The staff has developed plans and continued work on the related initiatives by scheduling a public workshop on NUREG-1855 and a public meeting to seek input on how to treat the industry developed, and NRC endorsed, Flex strategies and equipment in risk-informed decision-making. The NRC RISC will continue to hold public meetings with the industry RISC to discuss current and upcoming risk-informed initiatives of interest.

Risk Category

Infrastructure Development in Support of Risk-Informed Regulations. The purpose of this activity is to provide strategic direction to the NRC staff to collaborate on and advance the use of risk-informed decision-making in licensing, oversight, rulemaking, and other regulatory areas, consistent with the Commission's PRA Policy Statement.

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Risk Management Regulatory Framework (RMRF)

Summary Description

NUREG-2150, "A Proposed Risk Management Regulatory Framework" recommended that a RMRF applicable to all NRC program areas be adopted by the NRC. The Chairman's tasking memorandum dated June 14, 2012 directed the staff to "…review NUREG-2150 and provide a paper to the Commission that would identify options and make recommendations, including the potential development of a Commission policy statement." The Commission's SRM dated May 19, 2014 on SECY-13-0132 directed that the staff's paper also include "a description of any interrelationships of ongoing risk-informed initiatives to ensure the activities are well coordinated, and effectively planned and implemented." The EDO approved an extension of the due date from November 19, 2014, until December 18, 2015.

FY 2015 Status

The NRC staff requested public comments on draft white papers addressing RMRF issues on November 25, 2013 (78 FR 70354) and May 12, 2015 (80 FR 27191). The staff held public meetings on June 5, 2013, January 30, 2014, May 27, 2015, and July 29, 2015. The staff also met with the Reliability and Probabilistic Risk Assessment subcommittee of the ACRS on September 4, 2013, and February 20, and June 8, 2015. The staff will meet with the ACRS full committee in early November 2015 and the staff will update the Commission in a SECY paper in December 2015.

Risk Category

Infrastructure Development in Support of Risk-Informed Regulations. The purpose of this activity is to decide whether the RMRF recommended in NUREG-2150 should be adopted by all NRC program areas.

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NRC "Grow Your Own" PRA Capability

Summary Description

This NRC-wide PRA "Grow Your Own" (GYO) program was established to provide less experienced staff with high technical potential, the opportunity to have a focused, hands-on experience with risk-informed regulations, licensing actions, and decision-making. At the completion of the 3-year GYO program, those staff that pass their technical boards are recognized as reliability and risk analysts at the GG-14 level or promoted if at a lower grade.

FY 2015 Status

The initial two staff members in the program within the Office of New Reactors (NRO) and three staff members within the Office of Nuclear Reactor Regulation (NRR) completed all their required activities and passed their technical boards in the summer of 2015.

Risk Category

"Knowledge Transfer and Enhanced Capability" - The purpose of this activity is to enhance the knowledge and capability of selected staff that have little or no specific experience in PRA or risk-informed decision-making, but demonstrate superior technical capabilities.

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Update Regulatory Guide 1.174, An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant Specific Changes to the Licensing Basis

Summary Description

This activity is a review and update of Regulatory Guide (RG) 1.174 and other related guidance documents (e.g., RGs 1.175, 1.177, and 1.178) to incorporate revised and new guidance and insights resulting from other related work on risk-informed activities.

FY 2015 Status

The current status of this activity remains unchanged from the previous risk-informed activities update. Additional information is available.

Risk Category

Infrastructure development in support of risk-informed regulations. The purpose of the review and update is to incorporate revised and new guidance and insights related to the development of PRA consensus standards; insights gained from the Risk Management Regulatory Framework activities; and consideration of information related to NRC's efforts to better integrate the concepts of defense-in-depth and risk-informed regulation, which is intended to help assure that the NRC's defense-in-depth philosophy is interpreted and implemented consistently within a risk-informed regulatory framework.

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Update RG 1.200, An Approach for Determining the Technical Adequacy of Probabilistic Risk Assessment Results for Risk-Informed Activities

Summary Description

To support risk-informed regulatory activities, the expectations for PRA technical acceptability need to be provided. These expectations are in Regulatory Guide (RG 1.200) which provides the staff position regarding what constitutes a technically acceptable PRA and how the PRA standards and peer review guidance are used to demonstrate conformance with the staff position. In this regard, RG 1.200 provides a staff position (i.e., endorsement) of the published ASME/ANS PRA standards and the NEI peer review guidance documents.

FY 2015 Status

Staff continues to work with standard developing organization (SDO) and industry to develop necessary PRA standards and related peer review guidance for defining PRA technical acceptability in support of risk-informed activities.

Risk Category

Infrastructure development in support of risk-informed regulations. The purpose is to ensure the agency position on any changes to the PRA standard is documented.

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Update NUREG 1855, Guidance on the Treatment of Uncertainties Associated with PRAs in Risk-Informed Decisionmaking

Summary Description

This document provides guidance on how to treat uncertainties associated with PRA in risk-informed decision-making with regard to: 1) Identifying and characterizing the uncertainties associated with PRA in support of the PRA standard, 2) Performing uncertainty analyses to understand the impact of the uncertainties on the results of the PRA, and 3) Factoring the results of the uncertainty analyses into decision-making. This NUREG also provides guidance on how to meet the ASME/ANS PRA standard reguirements for addressing uncertainties in the PRA model. NRC recognized that the Electric Power Research Institute (EPRI) also was performing work in this area with similar objectives. Both NRC and EPRI believed a collaborative effort to have technical agreement and to minimize duplication of effort would be more effective and efficient.

FY 2015 Status

Revision to the document is under review.

Risk Category

Infrastructure development in support of risk-informed regulations.

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Page Last Reviewed/Updated Monday, August 08, 2016