ML19149A331

Summary of Teleconference with Exelon Generation Company, LLC, Regarding Submittal of a Potential License Amendment Request Related to the Implementation of TSTF-500, DC Electrical Rewrite - Update to TSTF-360

ML19149A331
Person / Time
Site:	Peach Bottom
Issue date:	05/31/2019
From:	Jennifer Tobin Plant Licensing Branch 1
To:	Bryan Hanson Exelon Generation Co, Exelon Nuclear
Tobin J, NRR/DORL/LPL1
References
Download: ML19149A331 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May 31, 2019 LICENSEE: Exelon Generation Company, LLC FACILITY: Peach Bottom Atomic Power Station, Units 2 and 3

SUMMARY

OF MAY 23, 2019, MEETING WITH EXELON GENERATION COMPANY, LLC REGARDING SUBMITTAL OF A POTENTIAL LICENSE AMENDMENT REQUEST RELATED TO THE IMPLEMENTATION OF TSTF-500, "DC ELECTRICAL REWRITE- UPDATE TO TSTF-360" On May 23, 2019, a Category 2 public meeting (by teleconference) was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC (Exelon, the licensee), at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The meeting notice, dated May 10, 2019, is available at Agencywide Documents Access and Management System (ADAMS) Accession No. ML19130A213. A list of attendees is enclosed.

The purpose of the meeting was to discuss a potential license amendment request to modify the wording in Technical Specification Limiting Condition for Operation (LCO) 3.8.4, "DC [Direct Current] Sources - Operating," to add an additional LCO for the Peach Bottom Atomic Power Station (Peach Bottom) opposite unit's inoperable battery charger condition.

The proposed changes are required to fix simultaneous conflicting LCO required action completion times of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> for one unit, and 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> for the other unit, for a single inoperable battery charger on one unit. The current conflicting concurrent 12-hour and 72-hour completion times for Unit 2 and Unit 3 for one unit's inoperable battery charger was an unidentified imbedded error incorporated in Peach Bottom Amendment Nos. 320 and 323 (Units 2 and 3, respectively), dated September 28, 2018 (ADAMS Accession No. ML18249A240), which adopted TSTF-500, "DC Electrical Rewrite - Update to TSTF-360."

The licensee's presentation materials can be found at ADAMS Accession No. ML19141A101.

Exelon briefly summarized that it expects to submit the proposed license amendment request for Peach Bottom, Units 2 and 3, by mid-June 2019. Exelon indicated it may request an expedited review for issuance by the end of 2019.

Exelon discussed the proposed revisions to the TSs to address the implementation issues due to the cross-ties between Unit 2 and Unit 3 and confirmed that there is not a broader issue with TSTF-500. The NRC staff will review the Peach Bottom application when submitted and will strive to complete the review according to the potential expedited review request.

2 No members of the public participated, and no public meeting feedback forms were received.

Please direct any inquiries to me at 301-415-2328 or Jennifer.Tobin@nrc.gov.

Je~~ager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278

Enclosure:

List of Attendees cc: Listserv

LIST OF ATTENDEES MAY 23, 2019, MEETING WITH EXELON GENERATION COMPANY, LLC REGARDING SUBMITTAL OF A POTENTIAL LICENSE AMENDMENT REQUEST FOR PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3, RELATED TO IMPLEMENTATION OF TSTF-500 Name Affiliation Jennifer Tobin U.S. Nuclear Regulatory Commission (NRC}

James Danna NRC Adakou Foli NRC Donna Williams NRC Tarico Sweat* NRC Dave Helker* Exelon Generation Company, LLC (Exelon}

Frank Mascitelli* Exelon Matt Retzer* Exelon Denise lngoe* Exelon Tony Hiqhtower* Exelon Todd Strayer* Exelon Mark Simon* Exelon Brad Fuller State of Pennsylvania

• Participated by telephone Enclosure

ML19149A331 OFFICE NRR/DORL/LPL 1/PM NRR/DORL/LPL 1/LA NRR/DORL/LPL 1/BC NRR/DORL/LPL 1/PM JDanna NAME JTobin LRonewicz (RGuzman for) JTobin DATE 05/30/2019 05/30/2019 5/31/2019 5/31/2019