CNL-24-024, Hydrologic Engineering Center River Analysis System Project Milestone Status Update
| ML24108A016 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Watts Bar, Sequoyah  |
| Issue date: | 04/17/2024 |
| From: | Hulvey K Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| CNL-24-024 | |
| Download: ML24108A016 (1) | |
Text
1101 Market Street, Chattanooga, Tennessee 37402 CNL-24-024 April 17, 2024 10 CFR 50.4 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 Docket Nos. 50-259, 50-260, and 50-296 Sequoyah Nuclear Plant, Units 1 and 2 Renewed Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant, Units 1 and 2 Facility Operating License Nos. NPF-90 and NPF-96 NRC Docket Nos. 50-390 and 50-391
Subject:
TENNESSEE VALLEY AUTHORITY - HYDROLOGIC ENGINEERING CENTER RIVER ANALYSIS SYSTEM PROJECT MILESTONE STATUS UPDATE
Reference:
TVA letter to NRC, Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestones, dated June 22, 2016 (ML16175A518)
By letter dated June 22, 2016, Tennessee Valley Authority (TVA) provided the Nuclear Regulatory Commission (NRC) with dates for several project deliverables associated with the ongoing Hydrologic Engineering Center River Analysis System (HEC-RAS) external flood modeling project (referenced letter). The HEC-RAS external flood modeling project was the subject of an April 4, 2016, public meeting to discuss technical details and a resolution plan for TVAs HEC-RAS external flood modeling issues. In the referenced letter, TVA committed to provide updates on the status of the specific project deliverables on a six-month frequency.
The purpose of this letter is to provide the sixteenth written update regarding the status of the project milestones consistent with the commitment made in the referenced letter.
One task was completed since the update provided by TVA letter dated October 30, 2023 (ML23303A058). Task 8 was completed by submitting TVA letter dated December 26, 2023, which transmitted Application to Revise Watts Bar Nuclear Plant Units 1 and 2 Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis (WBN-19-011),
(ML24003A270).
U.S. Nuclear Regulatory Commission CNL-24-024 Page 2 April 17, 2024 TABLE 1 PROJECT DELIVERABLE SUBMITTAL MILESTONES (Status Updates Shown in Bold Text)
Project Deliverable Submittal Milestone 1
Browns Ferry Mitigating Strategies Assessment Complete 2
Sequoyah Mitigating Strategies Assessment Complete 3
Watts Bar Mitigating Strategies Assessment Complete 4
Watts Bar Focused Evaluation Complete 5
Sequoyah Focused Evaluation Complete 6
Browns Ferry Focused Evaluation Complete 7
Sequoyah Hydrology License Amendment Request Complete 8
Watts Bar Hydrology License Amendment Request Complete Because all project milestones are now complete, the commitment to provide status updates made in the referenced letter is complete.
There are no new regulatory commitments made in this letter.
If additional information is needed regarding this update, please contact Russell Thompson at rrthompson@tva.gov.
Respectfully, Kimberly D. Hulvey Director, Nuclear Regulatory Affairs cc: See Page 3 Digitally signed by Edmondson, Carla Date: 2024.04.17 07:03:12 -04'00'
U.S. Nuclear Regulatory Commission CNL-24-024 Page 3 April 17, 2024 cc:
NRR Director - NRC Headquarters NRC Regional Administrator - Region II NRC Project Manager - Browns Ferry Nuclear Plant NRC Project Manager - Sequoyah Nuclear Plant NRC Project Manager - Watts Bar Nuclear Plant NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Senior Resident Inspector - Sequoyah Nuclear Plant NRC Senior Resident Inspector - Watts Bar Nuclear Plant