ML18268A063

Summary of Meeting with Exelon Generation Company, LLC Regarding Submittal of Potential License Amendment Request Related to High Pressure Service Water System at Peach Bottom Atomic Power Station, Units 2 and 3

ML18268A063
Person / Time
Site:	Peach Bottom
Issue date:	10/03/2018
From:	Jennifer Tobin Plant Licensing Branch 1
To:	Exelon Generation Co
Tobin J, NRR/DORL/LPL1, 415-2328
References
EPID L-2018-LRM-0060
Download: ML18268A063 (4)

Text

LICENSEE:

FACILITY:

SUBJECT:

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 3, 2018 Exelon Generation Company, LLC Peach Bottom Atomic Power Station, Units 2 and 3

SUMMARY

OF SEPTEMBER 18, 2018, MEETING WITH EXELON GENERATION COMPANY, LLC REGARDING THE SUBMITTAL OF A POTENTIAL LICENSE AMENDMENT RELATED TO THE HIGH PRESSURE SERVICE WATER SYSTEM AT PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 (EPID L-2018-LRM-0060)

On September 18, 2018, a Category 1 public meeting 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 purpose of the meeting was to discuss a potential license amendment request to modify the high pressure service water (HPSW) system. The meeting notice and agenda, dated September 7, 2018, are available in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML18260A291. A list of attendees is enclosed.

Exelon presented information (ADAMS Accession No. ML18260A082). The licensee briefly summarized that the proposed license amendment request is expected to be submitted for Peach Bottom Atomic Power Station (Peach Bottom), Units 2 and 3, by the end of September 2018 to support changes to the design and licensing basis described in the Updated Final Safety Analysis Report for the HPSW system. The proposed changes would reduce the HPSW system operating pressures, allowing a reduction in design pressure rating of the HPSW system piping to provide additional corrosion margin in the system pipe wall thickness, thereby increasing the margin of safety for the existing piping. The proposed changes would also temporarily revise the Peach Bottom, Units 2 and 3, Technical Specification (TS)

Sections 3.6.2.3, "Residual Heat Removal (RHR) Suppression Pool Cooling"; TS 3.6.2.4, "Residual Heat Removal (RHR) Suppression Pool Spray"; TS 3.6.2.5, "Residual Heat Removal (RHR) Drywell Spray"; and TS 3.7.1, "High Pressure Service Water (HPSW) System." These temporary one-time TS changes are needed to allow sufficient time to perform expeditious physical modifications of the Units 2 and 3 HPSW systems to support the proposed reduction of the HPSW design pressure and to allow for timely repairs to the Unit 3 RHR heat exchanger.

Exelon discussed the diagrams exhibited in its presentation. The NRC staff discussed a number of items for Exelon to consider before its submittal. Items to consider included impact on Chapter 15 events, including potential for releases of radioactive material; the Generic Letter 89-13 program; definitions of "high" and "moderate" pressure systems; and potential radiologic consequences from the work being done (in a potentially high radiation area).

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

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

Docket Nos. 50-277 and 50-278

Enclosure:

List of Attendees cc: Listserv

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Jennife;~~~:oject Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

LIST OF ATTENDEES SEPTEMBER 18, 2018, MEETING WITH EXELON GENERATION COMPANY, LLC REGARDING THE SUBMITTAL OF A POTENTIAL LICENSE AMENDMENT RELATED TO THE HIGH PRESSURE SERVICE WATER SYSTEM AT PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 Name Affiliation Jennifer Tobin NRC John Tsao NRC Jerome Bettle NRC Gerard Purciarello NRC Matthew Hamm NRC Muhammad Razzaque NRC Richard Gropp Exelon Denise lngoe Exelon Daniel Eveler Exelon David Alshouse Exelon Suzanne Loyd Exelon Chris Puoek Exelon Scott Kareis Exelon Mike Nena Exelon Barrv Schwartz Exelon Enclosure

ML18268A063 JBowen, OEDO RidsNrrLALRonewicz Resource RidsACRS_MailCTR Resource RidsRgn1 MailCenter Resource JTsao, NRR GPurciarello, NRR MRazzaque, NRR OFFICE NRR/DORL/LPL 1/PM NRR/DORL/LPL 1 /LA NRR/DORL/LPL 1/BC NRR/DORL/LPL 1/PM NAME JTobin PTalukdar/LRonewicz JDanna JTobin DATE 10/01/2018 10/01/2018 10/03/2018 10/03/2018