ML23010A290

NRR E-mail Capture - LIC-109 Acceptance Review - Callaway Plant, Unit 1 - License Amendment Request to Clarify Support System Requirements for the RHR & Crac Systems -

ML23010A290
Person / Time
Site:	Callaway
Issue date:	01/10/2023
From:	Mahesh Chawla NRC/NRR/DORL/LPL4
To:	Elwood T Ameren Missouri
References
L-2022-LLA-0176
Download: ML23010A290 (4)

Text

From: Mahesh Chawla Sent: Tuesday, January 10, 2023 4:17 PM To: Elwood, Thomas B Cc: Matthew Hamm; Hanry Wagage; Marie Pohida; Andrew Mihalik; Vijay K Goel; Dennis Galvin; Michelle Kichline; Summer Sun; Keith Tetter; Jennifer Dixon-Herrity

Subject:

LIC-109 Acceptance Review - Callaway Plant, Unit 1 - License Amendment Request to clarify support system requirements for the RHR & CRAC Systems

- EPID L-2022-LLA-0176

Dear Mr. Elwood,

By letter dated December 1, 2022, Ameren Missouri (the licensee) submitted a license amendment for Callaway Plant, Unit 1. 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 proposed amendment is requesting NRC approval of a change (clarification) to the plant's licensing basis, i.e., the Technical Specification (TS) Bases and FSAR, to allow use of one train of the normal, non-safety related Service Water system to solely provide cooling water support for one of two redundant trains of TS-required equipment when both equipment trains are required to be Operable during cold shutdown/refueling conditions.

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 900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> to complete. The NRC staff expects to complete this review in approximately 12 months, which is January 10th, 2024. 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.

Sincerely, Mahesh Chawla, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission ph: 301-415-8371 OFFICE DORL/LPL4/PM DORL/LPL4/BC JDixon-NAME MChawla Herrity DATE 1/10/2023 1/10/2023

Hearing Identifier: NRR_DRMA Email Number: 1903 Mail Envelope Properties (SA1PR09MB8415EFB6A51B9A051A23BD3FF1FF9)

Subject:

LIC-109 Acceptance Review - Callaway Plant, Unit 1 - License Amendment Request to clarify support system requirements for the RHR & CRAC Systems - EPID L-2022-LLA-0176 Sent Date: 1/10/2023 4:17:01 PM Received Date: 1/10/2023 4:17:02 PM From: Mahesh Chawla Created By: Mahesh.Chawla@nrc.gov Recipients:

"Matthew Hamm" <Matthew.Hamm@nrc.gov>

Tracking Status: None "Hanry Wagage" <Hanry.Wagage@nrc.gov>

Tracking Status: None "Marie Pohida" <Marie.Pohida@nrc.gov>

Tracking Status: None "Andrew Mihalik" <Andrew.Mihalik@nrc.gov>

Tracking Status: None "Vijay K Goel" <Vijay.Goel@nrc.gov>

Tracking Status: None "Dennis Galvin" <Dennis.Galvin@nrc.gov>

Tracking Status: None "Michelle Kichline" <Michelle.Kichline@nrc.gov>

Tracking Status: None "Summer Sun" <Summer.Sun@nrc.gov>

Tracking Status: None "Keith Tetter" <Keith.Tetter@nrc.gov>

Tracking Status: None "Jennifer Dixon-Herrity" <Jennifer.Dixon-Herrity@nrc.gov>

Tracking Status: None "Elwood, Thomas B" <TElwood@ameren.com>

Tracking Status: None Post Office: SA1PR09MB8415.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 3862 1/10/2023 4:17:02 PM Options Priority: Normal Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: