ML23013A333
| ML23013A333 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 01/13/2023 |
| From: | Richard Guzman NRC/NRR/DORL/LPL1 |
| To: | Tom Loomis Constellation Energy Generation |
| References | |
| EPID L-2022-LLR-0085 | |
| Download: ML23013A333 (1) | |
Text
From:
Richard Guzman To:
Loomis, Thomas R:(Constellation Nuclear)
Cc:
Reynolds, Ronnie J:(Constellation Nuclear); Hipo Gonzalez; RidsNRRLIC109 Resource
Subject:
Nine Mile Point Nuclear Station, Unit No. 1: Acceptance Review Determination - Proposed Alternative Associated with a Weld Overlay Repair to the Torus [EPID: L-2022-LLR-0085]
Date:
Friday, January 13, 2023 4:45:48 PM Hello Tom,
By letter dated December 8, 2022 (ADAMS Accession No. ML22342B229), Constellation Energy Generation, LLC (CEG, the licensee) submitted Relief Request I5R-10, associated with a weld overlay contingency repair to the torus. This alternative applies to the third ten-year Containment Inservice Inspection interval at the Nine Mile Point Nuclear Station, Unit No. 1 (NMP1).The proposed alternative in Relief Request I5R-10 would allow weld overlay repairs to be performed on the exterior surface of the torus in lieu of performing underwater weld repairs or draining the torus to allow access to perform weld repairs on the interior surface of the torus. This request also includes an alternative to the pneumatic leakage test requirements of IWE-5221 following the installation of a weld overlay repair performed on the torus.
The purpose of this e-mail is to provide the results of the Nuclear Regulatory Commission (NRC) staffs acceptance review of this relief request.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.
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 relief request will take approximately 240 hours0.00278 days <br />0.0667 hours <br />3.968254e-4 weeks <br />9.132e-5 months <br /> to complete. The NRC staff expects to complete this review by January 13, 2024. The NRC staff understands the relief request is submitted as a contingency repair for the NMP1 torus and that should the licensee later determine that relief is needed for the upcoming NMP1 spring 2023 outage, the licensee will send a separate letter requesting emergent approval.
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. Additional delay may occur if the submittal is provided to the NRC in advance or in parallel with industry program initiatives or pilot applications.
Please contact me if you have any questions. A copy of this email will be made publicly available in ADAMS.
- Thanks,
Rich Guzman Sr. PM, Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Office: O-9C7 l Phone: (301) 415-1030 Richard.Guzman@nrc.gov