ML24312A155
| ML24312A155 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/06/2024 |
| From: | Marshall T Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| Download: ML24312A155 (1) | |
Text
Sequoyah Nuclear Plant, P.O. Box 2000, Soddy Daisy, Tennessee 37384 November 6, 2024 10 CFR 50.4 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Unit 2 Renewed Facility Operating License No. DPR-79 NRC Docket No. 50-328
Subject:
SEQUOYAH UNIT 2 CYCLE 27 CORE OPERATING LIMITS REPORT REVISION 1 In accordance with Sequoyah Nuclear Plant (SQN) Unit 2 Technical Specification (TS) 5.6.3.d, enclosed is the Unit 2 Cycle 27 Core Operating Limits Report (COLR), Revision 1 that was issued on October 15, 2024.
There are no new regulatory commitments in this letter. If you have any questions, please contact Rick Medina, SQN Site Licensing Manager at (423) 843-8129 or rmedina4@tva.gov.
Respectfully, Thomas Marshall Site Vice President Sequoyah Nuclear Plant
Enclosure:
Sequoyah Unit 2 Cycle 27 Core Operating Limits Report, Revision 1 cc (Enclosure):
NRC Regional Administrator - Region II NRC Senior Resident Inspector - SQN Marshall, Thomas B.
Digitally signed by Marshall, Thomas B.
Date: 2024.11.06 13:43:34 -05'00'
ENCLOSURE SEQUOYAH UNIT 2 CYCLE 27 CORE OPERATING LIMITS REPORT REVISION 1
Unit 2 Cycle 27 SEQUOYAH Page 2 of 4 Revision 1 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Sequoyah Nuclear Plant Unit 2 has been prepared in accordance with the requirements of the Technical Specifications (TS) 5.6.3. This COLR is only valid for MODE 6 and MODE 5. The COLR must be revised before entering MODE 4. The cycle-specific parameter limits for specifications 2.1.1, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.8, 3.2.1, 3.2.2, 3.2.3, 3.3.1, and 3.4.1 are not applicable in MODE 6 or MODE 5 and are not provided.
The Technical Specifications that are affected by this report are listed below:
TS Section Technical Specification COLR Parameter COLR Section 3.1.1 SHUTDOWN MARGIN (SDM)
SDM 2.2.2 3.9.1 Boron Concentration Refueling Boron Concentration 2.11 5.6.3 CORE OPERATING LIMITS REPORT (COLR)
Analytical Methods Table 1 COLR FOR SEQUOYAH UNIT 2 CYCLE 27
Unit 2 Cycle 27 SEQUOYAH Page 3 of 4 Revision 1 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been developed using the NRC approved methodologies specified in the Technical Specifications 5.6.3.
2.2 SHUTDOWN MARGIN (LCO 3.1.1) 2.2.2 For TS 3.1.1, SDM shall be 1.0% k/k in MODE 5.
2.11 REFUELING BORON CONCENTRATION (LCO 3.9.1)
The refueling boron concentration shall be 2000 ppm.
COLR FOR SEQUOYAH UNIT 2 CYCLE 27
Unit 2 Cycle 27 SEQUOYAH Page 4 of 4 Revision 1 Table 1 COLR Methodology Topical Reports 1.
WCAP-9272-P-A, Westinghouse Reload Safety Evaluation Methodology, July 1985.
(methodology for Shutdown Margin, Refueling Pool Boron Concentration) 2.
WCAP-10965-P-A, ANC: A Westinghouse Advanced Nodal Computer Code, September 1986.
(methodology for Shutdown Margin, Refueling Pool Boron Concentration) 3.
WCAP-10965-P-A, Addendum 2-A, Revision 0, Qualification of the New Pin Power Recovery Methodology, September 2010.
(methodology for Shutdown Margin, Refueling Pool Boron Concentration) 4.
WCAP-16045-P-A, Qualification of the Two-Dimensional Transport Code PARAGON, August 2004.
(methodology for Shutdown Margin, Refueling Pool Boron Concentration) 5.
WCAP-16045-P-A, Addendum 1-A, Qualification of the NEXUS Nuclear Data Methodology, August 2007.
(methodology for Shutdown Margin, Refueling Pool Boron Concentration)
COLR FOR SEQUOYAH UNIT 2 CYCLE 27