ML25094A019
| ML25094A019 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/03/2025 |
| From: | Mahesh Chawla NRC/NRR/DORL/LPL4 |
| To: | Elwood T Ameren Missouri |
| References | |
| L-2025-LLA-0040 | |
| Download: ML25094A019 (4) | |
Text
From:
Mahesh Chawla Sent:
Thursday, April 3, 2025 5:38 PM To:
Elwood, Thomas B Cc:
Tony Nakanishi; Wendell Morton; Fanta Sacko; Stewart Bailey; Shivani Mehta; Darrell Murdock; Robert Beaton; Ahsan Sallman; Derek Scully; Khadijah West; Khoi Nguyen; Liliana Ramadan; Logan Gaul; Roberto Torres Davis; Samir Darbali; Thomas Scarbrough; Youssef Rokes; Milton Valentin; Ami Agrawal; Michael Bloodgood; Scott Schwind; Nathan Brown
Subject:
LIC-109 Acceptance of Callaway LAR to Revise Allowable Diesel Generator Frequency Range for TS 3.8.1,AC Sources - Operating, Surveillance Requirements - EPID: L-2025-LLA-0040
Dear Mr. Elwood,
By \
letter dated February 27, 2025 (Agencywide Documents and Access Management System (ADAMS) Package Accession No. ML25058A155), Union Electric Company, dba Ameren Missouri (the licensee) submitted a license amendment request (LAR) for Callaway Plant, Unit 1 (Callaway). The proposed LAR would revise the emergency diesel generator (EDG) frequency acceptance criteria for Technical Specification (TS) 3.8.1, AC [alternating current] Sources -
Operating, Surveillance Requirements (SRs).Specifically, the changes reflect incorporation of Technical Specification Task Force (TSTF) traveler TSTF-163, Revision 2, Minimum vs. Steady State Voltage and Frequency (ML040500733), as well as a change to the specified steady state DG operating frequency range consistent with the methodology in WCAP-17308-NP-A, Treatment of Diesel Generator (DG) Technical Specification Frequency and Voltage Tolerances, (ML17215A232).
The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this amendment 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 application 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 Title 10 of the Code of Federal Regulations (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 your application and concluded 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 proposed amendment 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. If additional information is needed, you will be advised by separate correspondence.
Based on the information provided in your submittal, the NRC staff has estimated that this licensing request will take approximately 600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> to complete. The NRC staff expects to complete this review in approximately 12 months, which is April 3, 2026. If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date or significant changes in the forecasted hours, 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, unanticipated addition of scope to the review, and review by NRC advisory committees or hearing-related activities. Additional delay may occur if the submittal is provided to the NRC in advance or in parallel with industry program initiatives or pilot applications.
If you have any questions, please contact me.
Mahesh Chawla, Project Manager Licensing Branch LPL4 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Phone: (301) 415-8371 Email: Mahesh.Chawla@nrc.gov
Hearing Identifier:
NRR_DRMA Email Number:
2748 Mail Envelope Properties (SJ0PR09MB10405FF042C561D8BCBA2D15FF1AE2)
Subject:
LIC-109 Acceptance of Callaway LAR to Revise Allowable Diesel Generator Frequency Range for TS 3.8.1,AC Sources - Operating, Surveillance Requirements - EPID L-2025-LLA-0040 Sent Date:
4/3/2025 5:37:43 PM Received Date:
4/3/2025 5:37:00 PM From:
Mahesh Chawla Created By:
Mahesh.Chawla@nrc.gov Recipients:
"Tony Nakanishi" <Tony.Nakanishi@nrc.gov>
Tracking Status: None "Wendell Morton" <Wendell.Morton@nrc.gov>
Tracking Status: None "Fanta Sacko" <Fanta.Sacko@nrc.gov>
Tracking Status: None "Stewart Bailey" <Stewart.Bailey@nrc.gov>
Tracking Status: None "Shivani Mehta" <Shivani.Mehta@nrc.gov>
Tracking Status: None "Darrell Murdock" <Darrell.Murdock@nrc.gov>
Tracking Status: None "Robert Beaton" <Robert.Beaton@nrc.gov>
Tracking Status: None "Ahsan Sallman" <Ahsan.Sallman@nrc.gov>
Tracking Status: None "Derek Scully" <Derek.Scully@nrc.gov>
Tracking Status: None "Khadijah West" <Khadijah.West@nrc.gov>
Tracking Status: None "Khoi Nguyen" <Khoi.Nguyen@nrc.gov>
Tracking Status: None "Liliana Ramadan" <Liliana.Ramadan@nrc.gov>
Tracking Status: None "Logan Gaul" <Logan.Gaul@nrc.gov>
Tracking Status: None "Roberto Torres Davis" <Roberto.TorresDavis@nrc.gov>
Tracking Status: None "Samir Darbali" <Samir.Darbali@nrc.gov>
Tracking Status: None "Thomas Scarbrough" <Thomas.Scarbrough@nrc.gov>
Tracking Status: None "Youssef Rokes" <Youssef.Rokes@nrc.gov>
Tracking Status: None "Milton Valentin" <Milton.Valentin-Olmeda@nrc.gov>
Tracking Status: None "Ami Agrawal" <ami.agrawal@nrc.gov>
Tracking Status: None "Michael Bloodgood" <Michael.Bloodgood@nrc.gov>
Tracking Status: None "Scott Schwind" <Scott.Schwind@nrc.gov>
Tracking Status: None "Nathan Brown" <Nathan.Brown@nrc.gov>
Tracking Status: None "Elwood, Thomas B" <TElwood@ameren.com>
Tracking Status: None Post Office:
SJ0PR09MB10405.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 4104 4/3/2025 5:37:00 PM Options Priority:
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