ML23132A158

Correction to Technical Specification 3.4.7 (Page 3.4-16) Issued in Amendment No. 337

ML23132A158
Person / Time
Site:	Peach Bottom
Issue date:	05/18/2023
From:	Audrey Klett Plant Licensing Branch 1
To:	Rhoades D Constellation Energy Generation, Constellation Nuclear
Drake J
References
EPID L-2019-PMP-0061
Download: ML23132A158 (1)

Text

May 18, 2023 Mr. David P. Rhoades Senior Vice President Constellation Energy Generation, LLC President and Chief Nuclear Officer Constellation Nuclear 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

PEACH BOTTOM ATOMIC POWER STATION, UNIT 2 - CORRECTION TO TECHNICAL SPECIFICATION 3.4.7 (PAGE 3.4-16) ISSUED IN AMENDMENT NO. 337 (EPID L-2019-PMP-0061)

Dear Mr. Rhoades:

By letter1 dated April 1, 2021, the U.S. Nuclear Regulatory Commission (NRC) staff issued Amendment No. 337 to Subsequent Renewed Facility Operating License No. DPR-44 for Peach Bottom Atomic Power Station (Peach Bottom), Unit 2, in response to the application from Exelon Generation Company, LLC (Exelon) via letter2 dated April 13, 2020, as supplemented by letter3 dated January 29, 2021. On May 10, 2023, your staff informed me of a discrepancy between what Exelon requested and the technical specifications (TS) that the NRC staff issued in the amendment.

The NRC staff has determined that the NRC inadvertently introduced a typographical error in the Completion Time for Condition A in Peach Bottom, Unit 2, TS 3.4.7, RHR [Residual Heat Removal] Cooling System - Hot Shutdown. Specifically, in its application, as supplemented, Exelon requested that the NRC approve a new completion time for Condition A that would state, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter (emphasis added). The NRC staffs safety evaluation for Amendment No. 337 refers to and evaluates, in sections 2.2.1 and 3.1.1, the 24-hour value. However, the completion time for condition A in the TS that the NRC issued states, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter (emphasis added).

The NRC staff is issuing this letter to correct the error in accordance with the guidance in the NRC memorandum4 dated January 16, 1997, which is derived from the Staff Requirements 1

Issuance of Amendments to Adopt Technical Specifications Task Force (TSTF)Traveler TSTF-566, dated April 1, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21033A530).

2 Application to Revise Technical Specifications to Adopt TSTF-566, letter from Exelon Generation Company, LLC to Nuclear Regulatory Commission dated April 13, 2020 (ML20104C104).

3 Supplement to Application to Revise Technical Specifications to Adopt TSTF-566, letter from Exelon Generation Company, LLC to Nuclear Regulatory Commission dated January 29, 2021 (ML21029A306).

4 License Amendment Corrections of Technical Specifications, NRC Memorandum dated January 16, 1997 (ML103260096).

D. Rhoades Memorandum (SRM)5 for SECY-96-238.6 The NRC staff determined that this correction to the TS does not change any of the NRC staffs conclusions in its safety evaluation regarding the acceptability of the changes approved in Amendment No. 337, nor does the correction affect the no significant hazards consideration published in the Federal Register on May 19, 2020 (85 FR 29985). The use of the 24-hour language in the Safety Evaluation for the amendment, as well as in the application and the TSTF7 that the proposed changes in the application were based on, supports the conclusion that this was an inadvertent typographical mistake.

Accordingly, the enclosure to this letter has a copy of revised and corrected TS page 3.4-16 for Amendment No. 337.

If you have any questions, please contact me at 301-415-0489 or by email to Audrey.Klett@nrc.gov.

Sincerely,

/RA/

Audrey L. Klett, Senior Project Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-277

Enclosure:

Corrected TS page 3.4-16 cc: Listserv 5

SRM-SECY-96-238, Proposed Guidance for Correction of Technical Specification Typographical Errors, dated December 17, 1996 (ML003754054).

6 SECY-96-238, Guidance for Correction of Technical Specification Typographical Errors, dated November 19, 1996 (ML9611250030).

7 TSTF-566, Revision 0, Revise Actions for Inoperable RHR Shutdown Cooling Subsystems, dated January 19, 2018 (ML18019B187).

ENCLOSURE CORRECTED TECHNICAL SPECIFICATION PAGE 3.4-16

RHR Shutdown Cooling System Hot Shutdown 3.4.7 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.7 Residual Heat Removal (RHR) Shutdown Cooling System Hot Shutdown LCO 3.4.7 Two RHR shutdown cooling subsystems shall be OPERABLE, and, with no recirculation pump in operation, at least one RHR shutdown cooling subsystem shall be in operation.

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NOTES---------------------------

1. Both required RHR shutdown cooling subsystems and recirculation pumps may be removed from operation for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> per 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> period.

2. One required RHR shutdown cooling subsystem may be inoperable for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for performance of Surveillances.

APPLICABILITY: MODE 3, with reactor steam dome pressure less than the RHR shutdown cooling isolation pressure.

ACTIONS

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NOTE------------------------------------

Separate Condition entry is allowed for each RHR shutdown cooling subsystem.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or two required A.1 Verify an alternate 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> RHR shutdown cooling method of decay heat subsystems inoperable. removal is available for each required AND inoperable RHR shutdown cooling Once per subsystem. 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter (continued)

PBAPS UNIT 2 3.4-16 Amendment

/P

337

ML23132A158 OFFICE NRR/DORL/LPL1/PM NRR/DORL/LPL1/LA OGC - NLO NAME AKlett KEntz BVaisey DATE 5/12/2023 5/11/2023 5/17/2023 OFFICE NRR/DORL/LPL1/BC NRR/DORL/LPL1/PM NAME HGonzalez (MMarshall for) AKlett DATE 05/18/2023 05/18/2023