L-2024-030, Supplement to Relief Request CISl-03-01 for Relief Concerning Containment Unbonded Post-Tensioning System Inservice Inspection Requirements
| ML24089A119 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 03/27/2024 |
| From: | Catron S Point Beach |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2024-030 | |
| Download: ML24089A119 (1) | |
Text
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NEXTera" ENERGY~
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March 27, 2024 L-2024-030 10 CFR 50.55a U. S. Nucle5f Regulatory Commission ATTN: D7tument Control Desk Washinqiton, D. C. 20555-0001
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RE/*/ Point Beach Nuclear Plant, Units 1 and 2 Docket Nos. 50-266 and 50-301 J Renewed Facility Operating Licenses DPR-24 and DPR-27 Supplement to Relief Request CISl-03-01 for Relief Concerning Containment Unbonded Post-Tensioning System lnservice Inspection Requirements R{ ~ference:
- 1. NextEra Energy Point Beach, LLC letter L-2024-001, "Relief Request CISl-03-01 for Relief Concerning C.ontainment Unbonded Post-Tensioning System lnservice
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Inspection Requirements," January 26, 2024 (ML24026A157)
In Reference 1, NextEra Energy Point Beach, LLC (NextEra) requested NRG approval of a relief request for Point Beach Nuclear Plant (PBNP) Units 1 and 2 by July 31, 2024.
Specifically, relief was requested from the applicable Section XI, Subsection IWL of the ASME Boiler and Pressure Vessel (B&PV) Code. The third Containment lnservice Inspection (GISI) Interval for PBNP Units 1 and 2 complies with ASME Code 2007 Edition through the 2008 Addenda. The third GISI interval for PBNP Units 1 and 2 began on September 9, 2016, and is currently scheduled to end September 8, 2026.
The purpose of this letter is to provide supplemental information to address the period of applicability for Reference 1.
Supplemental Information Section 2 to the Enclosure contained in Reference 1 (i.e., the technical report) provides proposed alternatives to the currently approved ISi program, which includes:
Extending the interval for visual examination (Subsection IWL Table IWL-2500-1 Items L2.30, L2.40 and L2.50) of Unit 1 and Unit 2 tendon end anchorage areas from 5 years to 1 O years in accordance with the proposed tendon surveillance schedule provided.
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_Ne_xt_Er_a_En_er_gy_P_oi_nt_B_ea_ch_, _LL_c ___________________________ J\\ \\ {l_{(
6610 Nuclear Road, Two Rivers, WI 54241 I V
L-2024-030 Page 2 of 2 Extending the interval for Unit 1 and Unit 2 for complete Unit 1 and Unit 2 post-tensioning system examinations that include tendon force measurements (Subsection IWL Table IWL-2500-1 Items L2.10, L2.30, L2.40, and L2.50) in accordance with the proposed tendon s*urveillance schedule provided.
Eliminating the1*requirement for de-tensioning/ re-tensioning of tendons, wire removal and wire sample testing (Subsection IWL Table IWL-2500-1, Item L2.20).
Limiting initial corrosion protection medium (CPM) laboratory tests (Subsection IWL Table IWL-2500-1 Item L2.40) to that which determines absorbed water content; perform the corrosive ion and reserve alkalinity tests only on those samples that have a water content above the acceptance limit, are collected at an anchorage where free water and l or corrosion is found or if specified by the IWL Responsible Engineer (RE).
The proposed tendon surveillance schedule included in Section 2 of the Enclosure of Reference 1 projects out to 2050 (if applicable based on unit closure schedule). These proposed alternatives to the currently approved ISi program are recommendations for consideration 'by NextEra and are based on the evaluations contained within the technical report, Sections 3 through 5. The technical report, including the proposed tendon surveillance schedule, is referenced in Sections 4 and 5 of the Attachment to Reference 1. Note that the proposed tendon surveillance schedule provides detailed surveillance dates, including the four most recent Unit 1 and Unit 2 surveillances for reference, to support the relief request application.
This supplemental letter is intended to clarify that Relief Request CISl-03-01 (Reference 1) seeks NRC approval through the 2030 surveillances and does not apply beyond the proposed 2030 examination. The technical report included in Reference 1 as the Enclosure contains evaluations and proposed recommendations that extend beyond the scope of this relief request. Therefore, this relief request duration is proposed as a one-time extension applicable between the most recently completed examination in 2019 and the subsequent examination that would otherwise be required by IWL.
This submittal contains no new Regulatory Commitments or revisions to existing commitments.
If you have questions or require additional information, please contact Mr. Kenneth Mack, Licensing Manager at (561) 904-3635.
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Steve Catron Licensing and Regulatory Compliance Director - Nuclear Fleet cc:
USNRC Regional Administrator, Region Ill Project Manager, USNRC, Point Beach Nuclear Plant Resident Inspector, USNRC, Point Beach Nuclear Plant Mr. Mike Verhagan, Department of Commerce, State of Wisconsin