ML25056A474
| ML25056A474 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 02/25/2025 |
| From: | Richard Guzman NRC/NRR/DORL/LPL1 |
| To: | Reynolds R Constellation Energy Generation, Constellation Nuclear |
| References | |
| EPID L-2025-LLA-0019 | |
| Download: ML25056A474 (1) | |
Text
From:
Richard Guzman To:
"Reynolds, Ronnie J:(Constellation Nuclear)"
Cc:
RidsNRRLIC109 Resource; Hipo Gonzalez; "Rossi, Matthew:(Constellation Nuclear)"
Subject:
Nine Mile Point Nuclear Station, Unit No. 2 - Acceptance Review Determination: LAR to Revise SR to a Reduced Test Pressure and Leakage Rate for MSIVs [EPID: L-2025-LLA-0019]
Date:
Tuesday, February 25, 2025 9:19:00 AM Mr. Reynolds,
By letter dated January 29, 2025 (ADAMS Accession No. ML25029A181), Constellation Energy Generation, LLC (CEG, the licensee) submitted a license amendment request (LAR) for Nine Mile Point Nuclear Station, Unit No. 2 (NMP2).The proposed amendment would modify NMP2 Technical Specification (TS) requirements to reduce the main steam isolation valve (MSIV) test pressure, specifically revising the MSIV test pressure value from
> 40 psig to > 25 psig in Surveillance Requirement (SR) 3.6.1.3.12. In addition, the proposed amendment would adjust the maximum allowable leakage through each MSIV to account for the change in test pressure.
The purpose of this email is to provide the results of the NRC staffs acceptance review of this licensing action. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review.The acceptance review is also intended to identify whether the submittal has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.Consistent with Section 50.90 of 10 CFR, an application for an amendment to a license (including the technical specifications) must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.
The NRC staff has reviewed the licensees submittal and concludes that it does provide technical information in sufficient detail to enable the NRC staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the request in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review as compared to the detailed technical review, there may be instances in which issues that impact the NRC staffs ability to complete the detailed technical review are identified despite completion of an adequate acceptance review. You will be advised of any further information needed to support the NRC staffs detailed technical review by separate correspondence.
Based on the information provided in your submittal, the NRC staff has estimated that the review of the LAR will take approximately 180 hours0.00208 days <br />0.05 hours <br />2.97619e-4 weeks <br />6.849e-5 months <br /> to complete.The NRC staff expects to complete this review by February 25, 2026.If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date (greater than a month) or significant changes in the forecasted hours (greater than 25%),
the reasons for the changes, along with the new estimates, will be communicated during the routine interactions with the assigned project manager. These estimates are based on the NRC staffs initial review of the application, and they could change due to several factors including requests for additional information and unanticipated addition of scope to
the review.
Please contact me if you have any questions. A copy of this email communication will be made publicly available in ADAMS.
~~~~~~~~~~~~
Richard V. Guzman Senior Project Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Office: O-11C21 l Phone: (301) 415-1030 Richard.Guzman@nrc.gov