ML21131A217

NRR E-mail Capture - Acceptance Review - Vogtle TS 3.3.5, Loss of Power (LOP) Instrumentation, Surveillance Requirement (SR) 3.3.5.2, Allowable Values LAR (L-2021-LLA-0054)

ML21131A217
Person / Time
Site:	Vogtle
Issue date:	05/11/2021
From:	John Lamb NRC/NRR/DORL/LPL2-1
To:	Lowery K Southern Nuclear Operating Co
References
L-2021-LLA-0054
Download: ML21131A217 (3)

Text

From: Lamb, John Sent: Tuesday, May 11, 2021 4:22 PM To: Lowery, Ken G.

Subject:

Acceptance Review - Vogtle TS 3.3.5.2 LAR (L-2021-LLA-0054)

Importance: High

Ken, By letter dated March 30, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21089A388), as supplemented by letter dated May 6, 2021 (ADAMS Accession No. ML21126A231), Southern Nuclear Operating Company (SNC, the licensee) submitted a license amendment request (LAR) for Vogtle Electric Generating Plant, Units 1 and 2 (Vogtle).

The proposed LAR would revise Technical Specification 3.3.5, Loss of Power (LOP)

Instrumentation, Surveillance Requirement (SR) 3.3.5.2, Allowable Values. The proposed amendment would modify the allowable value (AV) for the loss of voltage and degraded voltage relays.

Specifically, SNC proposes to change the CHANNEL CALIBRATION with setpoint AV for SR 3.3.5.2 A and B as below:

Existing AV Proposed AV SR 3.3.5.2.A (Loss of Voltage) 2912 Volts (V) 2958.2 V SR 3.3.5.2.B (Degraded Voltage) 3683 V 3729.2 V The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this LAR. 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 TSs) 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 amendments 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 a request for additional information (RAI) is needed, you will be advised by separate correspondence.

Based on the information provided in your submittal, the NRC staff has estimated that this LAR will take approximately 400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> to complete. The NRC staff expects to complete this review in approximately 12 months, which is May 11, 2022. 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 RAIs, 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.

John G. Lamb, Senior Project Manager Licensing Project Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Hearing Identifier: NRR_DRMA Email Number: 1183 Mail Envelope Properties (MN2PR09MB5084613B2433F2D2BBFE9C33FA539)

Subject:

Acceptance Review - Vogtle TS 3.3.5.2 LAR (L-2021-LLA-0054)

Sent Date: 5/11/2021 4:21:34 PM Received Date: 5/11/2021 4:21:00 PM From: Lamb, John Created By: John.Lamb@nrc.gov Recipients:

"Lowery, Ken G." <KGLOWERY@southernco.com>

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