CNL-23-027, Second Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505-A, Revision 2, Provide Risk-Informed Extended Completion Times – RITSTF Initiative 4b (BFN TS-524)
| ML23088A194 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 03/29/2023 |
| From: | Hulvey K Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| CNL-23-027, EPID L-2022-LLA-0049 | |
| Download: ML23088A194 (1) | |
Text
10 CFR 50.90 1101 Market Street, Chattanooga, Tennessee 37402 CNL-23-027 March 29, 2023 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Dockets 50-259, 50-260, and 50-296
Subject:
Second Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505-A, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b (BFN TS-524) EPID L-2022-LLA-0049
References:
- 1. TVA Letter to NRC, CNL-21-009, License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505-A, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b, (BFN TS-524), dated March 31, 2022 (ML22090A287) 2.
TVA Letter to NRC, CNL-22-097, Response to Request for Additional Information and Supplement to License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b (BFN TS-524) EPID L-2022-LLA-0049, dated December 1, 2022 (ML22335A468)
In Reference 1, Tennessee Valley Authority (TVA) requested an amendment to the Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68. The proposed amendment would modify Technical Specifications (TS) requirements to permit the use of Risk-Informed Completion Times in accordance with Technical Specification Task Force (TSTF)-505-A, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF [Risk-Informed TSTF] Initiative 4b. In Reference 2, TVA responded to a Nuclear Regulatory Commission (NRC) request for additional information and provided a supplement to that proposed amendment.
U.S. Nuclear Regulatory Commission CNL-23-027 Page 2 March 29, 2023 Subsequent to submitting Reference 2, TVA discovered a minor error in the TSTF-505-A, Revision 2 traveler that affects the TS markups provided in Reference 1. Specifically, the traveler establishes a new Example 1.3-8 for TS Section 1.3, Completion Times, in the NUREG-1433 markup. Example 1.3-8 specifies a Required Action (RA) B.1 Be in MODE 3 with a Completion Time of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. A 6-hour Completion Time is inconsistent with all other Be in MODE 3 RAs in NUREG-1433 and should be 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. It should be noted that the 12-hour Completion Time for Example 1.3-8 has been corrected in NUREG-1433, Revision 5.
Accordingly, TVA is taking an administrative variation to TSTF-505-A, Revision 2, to change the Example 1.3-8 RA B.1 Completion Time from 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The revised TS markup insert reflecting this change is enclosed and is applicable to all three units at BFN.
There are no TS Bases changes associated with this supplement.
This letter does not change the no significant hazard consideration or the environmental consideration contained in Reference 1. Additionally, in accordance with 10 CFR 50.91(b)(1), TVA is sending a copy of this letter and enclosures to the Alabama Department of Public Health.
There are no new regulatory commitments contained in this submittal.
Please address any questions regarding this submittal to Stuart L. Rymer, Senior Manager of Fleet Licensing at slrymer@tva.gov.
I declare under penalty of perjury that the foregoing is true and correct. Executed on this 29th day of March 2023.
Respectfully, Kimberly D. Hulvey Director, Nuclear Regulatory Affairs
Enclosure:
TS Markup Insert Example 1.3-8 Revision to CNL-21-009 License Amendment Request cc (w/Enclosure):
NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Project Manager - Browns Ferry Nuclear Plant State Health Officer, Alabama Department of Public Health Digitally signed by Edmondson, Carla Date: 2023.03.29 12:53:20 -04'00'
CNL-23-027 Enclosure TS Markup Insert Example 1.3-8 Revision to CNL-21-009 License Amendment Request (1 page)
Note - This change shown in blue is applicable to all three Browns Ferry Units
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