ML21089A135

Emergency Plan Implementing Procedure Revision

ML21089A135
Person / Time
Site:	Sequoyah
Issue date:	03/30/2021
From:	Lovitt M, Marshall T Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
Download: ML21089A135 (3)

Text

Tennessee Valley Authority, Post Office Box 2000, Soddy Daisy, Tennessee 37384 March 30, 2021 10 CFR 50.54(q) 10 CFR 72.44(f)

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Units 1 and 2 Renewed Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327, 50-328, and 72-034

Subject:

Emergency Plan Implementing Procedure Revision In accordance with the requirements of 10 CFR 50.54(q) and 10 CFR 72.44(f), the Tennessee Valley Authority is submitting a description of changes to the Sequoyah Nuclear Plant (SQN)

Radiological Emergency Plan. The affected document is the SQN Emergency Plan Implementing Procedure (EPIP) listed below.

EPIP Revision Title Effective Date(s) 1 57 Emergency Plan Classification Matrix March 5, 2021 The above referenced revision was evaluated in accordance with 10 CFR 50.54(q)(3) and 10 CFR 72.44(f) and determined that the change does not reduce the effectiveness of the Emergency Plan. Details of the revision are included in the enclosure.

There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact Mr. Paul Gain, Site Emergency Preparedness Manager, at (423) 843-7088.

Respectfully, Lovitt, Matthew Digitally signed by Lovitt, Matthew Robert Robert Date: 2021.03.30 10:04:12 -04'00' for Thomas B. Marshall Site Vice President Sequoyah Nuclear Plant

U.S. Nuclear Regulatory Commission Page 2 March 30, 2021

Enclosure:

SQN Units 1 & 2 Description of Revision/Change cc: NRC Regional Administrator - Region II NRC Senior Resident Inspector - Sequoyah Nuclear Plant NRC Director - Division of Fuel Management, NMSS

ENCLOSURE: SQN UNITS 1 & 2 DESCRIPTION OF REVISION/CHANGE EPIP-1, Revision 57 Updated the Reactor Vessel Level Indicating System (RVLIS) lower range indication for Initiating Conditions (ICs) CG1 and CS1. The lower range indication for the top of active fuel in Mode 5 was 64%. Due to an update in calculation methodology in Revision 037 of SQS20110, Emergency and Abnormal Operating Procedure Setpoints, the design output was revised to reflect a lower range indication of 60% as being the top of the active fuel in Mode 5. The change affected EAL 1.a of CG1 and 2.b of CS1 and their associated bases. Also, added the calculation as a reference for both ICs.