ML25176A051
| ML25176A051 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 06/25/2025 |
| From: | Turner Z Plant Licensing Branch II |
| To: | Fulmer A Dominion Energy South Carolina |
| References | |
| EPID L-2025-LRO-0023 | |
| Download: ML25176A051 (1) | |
Text
From:
Zach Turner To:
allen.fulmer@dominionenergy.com Cc:
Ed Miller; Leslie Terry; Ankur Bhattacharya
Subject:
RAI - VC Summer - SGTIR for RF 28 Date:
Wednesday, June 25, 2025 7:57:00 AM Attachments:
RAI-10646-R1-FINAL.docx
- Allen,
By letter dated April 24, 2025 (Agencywide Documents Access and Management System Accession No. ML25114A223), Dominion Energy South Carolina (DESC, the licensee) submitted information summarizing the results of the fall 2024 steam generator (SG) inspections performed at Virgil C.
Summer Nuclear Station (Summer), Unit 1. These inspections were performed during the end of cycle 28 refueling outage (1R28).
To complete its review of the inspection report, the U.S. Nuclear Regulatory Commission (NRC) staff requests additional information (RAI) as discussed in the attachment to this email. On June 5, 2025, the NRC staff sent the draft RAI to the DESC for review to determine if a clarifying call was needed.
DESC requested a clarifying call, which was held on June 24, 2025. As agreed upon in a clarification call held between DESC and the NRC staff, the licensee will respond to the request for additional information (RAI) within 30-days.
If you have any questions, you may contact me at 301-415-2258.
Very Respectfully,
Zach Turner, Project Manager Nuclear Regulatory Commission Division of Operating Reactor Licensing NRR/DORL/LPL2-1 (301) 415-2258 Office: OWFN-10C02 Mail Stop: O-08 B01A
1 REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION VCSUMMER REVIEW OF STEAM GENERATOR INSPECTION REPORT (RF-28)
DOMINION ENERGY SOUTH CAROLINA, INC.
SUMMER, UNIT 1 DOCKET NO. 05000395 ISSUE DATE: 06/24/2025 Question 1 By letter dated April 24, 2025(Agencywide Documents Access and Management System Accession No. ML25114A223), Dominion Energy South Carolina (the licensee) submitted information summarizing the results of the fall 2024 steam generator (SG) inspections performed at Virgil C. Summer Nuclear Station (Summer), Unit 1. These inspections were performed during the end of cycle 28 refueling outage (1R28).
Section 6.9.1.12 in the Summer, Unit 1,Technical Specifications requires that a report be submitted within 180 days after the initial entry into hot shutdown (MODE 4) following completion of an inspection of the SGs. To complete its review of the inspections, the NRC staff requests the following additional information:
- 1. The 1R28 SG tube inspection report states that While performing the as-found inspection in SG-C cold leg, flakes were discovered in the bottom of the SG bowl. The evaluation of the reported flakes concluded that the flakes are not a material of detrimental concerns for the steam generator. Please summarize the evaluation that concluded the flakes are not a material of detrimental concern for the SG, including, if available, the origin of the flakes and any characteristics of the flakes (e.g., material, length, width, thickness, etc.).
OFFICE NRR/DORL/LPL2-1/PM NRR/DORL/LPL2-1/BC NRR/DNRL/NCSG/BC NAME EMiller MMarkley SBloom DATE 06/05/2025 06/04/2025 06/04/2025