ML22311A087
| ML22311A087 | |
| Person / Time | |
|---|---|
| Issue date: | 11/28/2022 |
| From: | Beverly Smith NRC/NRR/DNRL |
| To: | |
| References | |
| Download: ML22311A087 (1) | |
Text
From 40 to 60 to 80 Years -
What is Next for License Renewal in the USA?
Brian W. Smith, Director (Brian.Smith@NRC.GOV)
Division of New and Renewed Licenses Office of Nuclear Reactor Regulation IAEA Fifth International Conference on Nuclear Power Plant Life Management Vienna, Austria November 28, 2022
Topics
- License Renewal Approach & the GALL Report
- Recent Activities
- License Renewal for 40 Years / Plant Operation to 100 Years
- Risk-informing License Renewal
- Development of Revision 1 of GALL-SLR
- License Status of US Operating Reactors
- Summary 2
IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
License Renewal Approach
- License Renewal Part 54 of Title 10 of the U.S. Code of Federal Regulations (10 CFR Part 54)
- Standards for approval - reasonable assurance that the activities authorized by the renewed license will continue to be conducted in accordance with the current licensing basis
- Managing the effects of aging during the period of extended operation on the functionality of in-scope long-lived, passive structures and components
- Time-limited Aging Analyses (TLAAs)
- Satisfy requirements for environmental review 3
IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
License Renewal Principles
- The ongoing regulatory process is adequate to ensure an acceptable level of safety for operating plants
- The same plant operating rules (plant current licensing basis) apply during the renewal term
- Requires additional actions for aging management of passive, long-lived plant structures and components for license renewal 4
IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Regulatory Process Essential Elements
- Resident inspectors and Regional inspections
- Performance assessments of inspection findings
- Daily assessment of events
- Safety issue resolutions (generic and plant specific)
- Materials aging & degradation issues important to safety addressed by
- Rule changes
- Generic communications
- Orders
- Voluntary actions 5
IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
License Renewal Early History
- Initial applications in 1998
- Early identification that adequate existing programs are frequently used for license renewal
- Commission approval to develop guidance, became Generic Aging Lessons Learned (GALL) Report, and the Standard Review Plan for License Renewal (SRP-LR)
- Ensure that regulatory guidance is clear and understandable to stakeholders so that the license renewal process is stable and predictable for future applicants.
- Update guidance, as appropriate, to capture the additional lessons learned and improve the license renewal process.
6 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Subsequent License Renewal - Operation for 80 Years
- The principles of license renewal continue to be effective to ensure safety for operations beyond 60 years
- Identification of aging management needs for the 60- to 80-year operating period
- Issued GALL report for 80 years (GALL-SLR) and SRP-SLR in 2017 7
IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Consideration of 40-Year License Renewal Terms and Plant Operation to 100 Years License Renewal for an Additional 40 years Motivated by a plant with a 40-year license operating near the end of that license Looked at legal/regulatory aspects, environmental review, safety review, and inspection/oversight aspects Public meeting on February 18, 2021 - ADAMS ML21070A117 Industry stated not on their radar right now Public comments generally not supportive Technical Issues for 100 years of Operation Public meeting on January 21, 2021 - ADAMS ML21078A453 Industry stated prudent to continue relevant research Public comments generally not supportive
- Closure Memo dated June 22, 2021: ADAMS ML21117A007 Both activities were discontinued 8
IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Risk-Informing License Renewal
- Part 54 is largely a deterministic rule
- Scoping and Screening, aging management review, TLAAs
- 54.21(a)(3) - For each structure and component identified..
., demonstrate that the effects of aging will be adequately managed so that the intended function(s) will be maintained consistent with the CLB for the period of extended operation.
- Current use of risk in guidance documents
- GALL-SLR XI.M41: Piping inspection locations are selected based on risk (i.e., susceptibility to degradation and consequences of failure).
9 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Risk-Informed Aging Management Programs
- Submitted by NEI on February 18, 2022
- Proposed (pilot) AMPs: GALL-SLR XI.M33 (selective leaching) and XI.E3 (non-EQ inaccessible power cables)
- Public meeting held June 2
- If approved will add to GALL-SLR Revision 1 10 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Risk-Informing LR and SLR Public meeting held July 2022 Follow-up to session at the NRCs March 2022 Regulatory Information Conference (RIC)
Considered items that can be implemented now consistent with Part 54, or could require rulemaking Conclusion was to risk-inform aging management programs and their implementation for now Remains an area of interest for us 11 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Development of GALL-SLR Revision 1 Focus is topics previously identified as possible SLR-ISGs; not a comprehensive review of the documents Basis for updates Revised and new guidance Substantive corrections Incorporate completed SLR-ISGs Public meeting held in early September - summary here Plan to hold public meetings to understand international perspectives - details to be determined 12 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
License Status of US Operating Reactors
- Renewed licenses issued for 94 units (10 have ceased operation)
- 8 units with 40-year licenses
- 78 units with 60-year licenses: applications for 6 more expected before March 2024
- 6 units with 80-year licenses (Turkey Point*, Peach Bottom* and Surry):
applications for 9 units under review, and for 7 more units by end of 2025
- 61 units (52 operating) have entered their 41st year of operation; first was in April 2009
- ~430 reactor-years of operation beyond 40 years by end of 2022
- Oldest units have operated for 53 years
- SLR licenses were reduced to 60-year duration pending revised environmental reviews 13 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
Summary
- License renewal is a limited scope review focused on demonstrating that aging effects will be adequately managed to ensure plant safety will be maintained during all operating periods
- This limited scope review is enabled by the regulatory process essential elements outlined previously
- The NRC is seeking to appropriately risk-inform license renewal, starting with consideration of aging management programs
- The NRC is developing Revision 1 of the GALL-SLR report and during this process we plan to reach out to international colleagues for their perspectives 14 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022
References
- http://www.nrc.gov/reactors/operating/licensing/renewal.html
- http://www.nrc.gov/reactors/operating/licensing/renewal/subsequen t-license-renewal.html 15 IAEA Fifth International Conference on Nuclear Power Plant Life Management - November 28 to December 2, 2022