Generic Aging Lessons Learned for Subsequent License Renewal (GALL-SLR) Report – Draft Report for Comment (NUREG-2191, Volume 2, Revision 1)

This NUREG-series publication was issued for public comment. The comment period is now closed.

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Manuscript Completed: July 2023
Date Published: July 2023

Office of Nuclear Reactor Regulation
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

This document provides guidance on the content of applications for renewal of the initial renewed operating license. The initial renewed operating license is the first renewed license issued under Title 10 of the Code of Federal Regulations (10 CFR) Part 54, "Requirements for Renewal of Operating Licenses for Nuclear Power Plants," after either supersession or the expiration of the original operating license issued under either 10 CFR Part 50 or Part 52 following the completion of construction under a construction permit issued under Part 50, or a combined license issued under Part 52. In this guidance document, the renewal of the initial renewed operating license is referred to as "subsequent license renewal (SLR). Draft NUREG–2191, Revision 1, "Generic Aging Lessons Learned for Subsequent License Renewal (GALL-SLR) Draft Report for Comment" (GALL-SLR Report, Revision 1, GALL-SLR Report, or simply GALL-SLR) provides guidance for SLR applicants. The GALL-SLR Report contains the U.S. Nuclear Regulatory Commission (NRC) staff’s generic evaluation of plant aging management programs (AMPs) and establishes the technical basis for their adequacy. The GALL-SLR Report contains recommendations about specific areas for which existing AMPs should be augmented for SLR. An applicant may reference this report in an SLR application to demonstrate that the AMPs at the applicant’s facility correspond to those described in the GALL-SLR Report. If an applicant credits an AMP in the GALL-SLR Report, it is incumbent on the applicant to ensure that the conditions and operating experience at the plant are bounded by the conditions and OE for which the GALL-SLR Report program was evaluated. If these bounding conditions are not met, it is incumbent on the applicant to address any additional aging effects and augment the AMPs for SLR. For AMPs that are based on the GALL-SLR Report, the NRC staff will review and verify whether the applicant’s AMPs are consistent with those described in the GALL-SLR Report, including applicable plant conditions and operating experience. The focus of the NRC staff’s review of an SLR application is on the AMPs that an applicant has enhanced to be consistent with the GALL-SLR Report, the AMPs for which the applicant has taken an exception to the program described in the GALL-SLR Report, and plant-specific AMPs not described in the GALL-SLR Report.

This document is a companion document to Draft NUREG–2192, "Standard Review Plan for Review of Subsequent License Renewal Applications for Nuclear Power Plants, Draft Report for Comment" (SRP-SLR), Revision 1, that provides guidance to NRC staff on the review of SLR applications. The guidance in this document is for the use of future applicants for SLR. The NRC does not intend to impose the guidance in this document on current holders of an initial operating license. However, this document encompasses all of the guidance applicable to initial license renewal. Accordingly, both current holders of initial operating licenses as well as future applicants for initial license renewal may voluntarily choose to reference an AMP in the GALL SLR Report in their applications. However, such applicants should inform the NRC that they plan to demonstrate consistency with the GALL-SLR Report.

Drafts of GALL-SLR Report, Revision 0, and the SRP-SLR, Revision 0, were published for public comment in December 2015, and the comment period ended on February 29, 2016. The staff received more than 300 pages of comments from interested stakeholders. The comments were reviewed and dispositioned by the staff, and documented in NUREG-2222, "Disposition of Public Comments on the Draft Subsequent License Renewal Guidance Documents NUREG–2191 and NUREG–2192" (Agencywide Documents Access and Management System [ADAMS] Accession No. ML17362A143), in December 2017. The disposition of the comments was published in final NUREG-2191, Revision 0, (GALL-SLR Report, Rev. 0) (ADAMS Accession Nos. ML17187A031, and ML17187A204, for Volumes 1 and 2 respectively) in July 2017. The companion document final SRP-SLR, Revision 0 (SRP-SLR, Rev. 0) (ADAMS Accession No. ML17188A158) was also issued in July 2017. The staff also published NUREG-2221, "Technical Bases for Changes in the Subsequent License Renewal Guidance Documents NUREG–2191 and NUREG–2192" (Technical Basis Document) (ADAMS Accession No. ML17362A126) in December 2017, that documented all the technical changes made to the license renewal guidance documents for SLR (i.e., for operation from 60 years to 80 years), along with the technical bases for the changes. Subsequently, the NRC staff determined that certain revisions and updates to these guidance documents are warranted. These revisions and updates are presented in draft Revision 1 to the SRP-SLR and draft Revision 1 to the GALL-SLR. Comments on the revised documents will be considered, as appropriate, in the final versions of these documents. A draft supplement to the Technical Basis Document (NUREG-2221) was also published.