ML15056A046

Draft Request for Additional Information

ML15056A046
Person / Time
Site:	Peach Bottom
Issue date:	02/24/2015
From:	Richard Ennis Plant Licensing Branch 1
To:	Doug Broaddus Plant Licensing Branch 1
Ennis R, NRR/DORL/LPL1-2, 415-1420
References
TAC MF4410, TAC MF4411
Download: ML15056A046 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 24, 2015 MEMORANDUM TO: Douglas A. Broaddus, Chief Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Richard B. Ennis, Senior Project Manager /RA/

Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3, DRAFT REQUEST FOR ADDITIONAL INFORMATION (TAC NOS.

MF4410 AND MF4411)

The attached draft request for additional information (RAI) was transmitted on February 24, 2015, to Ms. Wendy Croft of Exelon Generation Company, LLC (Exelon, the licensee). This information was transmitted to facilitate an upcoming conference call in order to clarify the licensees amendment request for Peach Bottom Atomic Power Station, Units 2 and 3, dated July 10, 2014. The proposed amendment would revise Technical Specification (TS) requirements to address Generic Letter 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems, in accordance with TS Task Force (TSTF) Traveler TSTF-523, Revision 2.

The draft RAI was sent to Exelon to ensure that the questions are understandable, the regulatory basis for the questions is clear, and to determine if the information was previously docketed. This memorandum and the attachment do not convey or represent an NRC staff position regarding the licensees request.

Docket Nos. 50-277 and 50-278

Attachment:

Draft RAI

February 24. 2015 MEMORANDUM TO: Douglas A. Broaddus, Chief Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Richard B. Ennis, Senior Project Manager /RA/

Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3, DRAFT REQUEST FOR ADDITIONAL INFORMATION (TAC NOS.

MF4410 AND MF4411)

The attached draft request for additional information (RAI) was transmitted on February 24, 2015, to Ms. Wendy Croft of Exelon Generation Company, LLC (Exelon, the licensee). This information was transmitted to facilitate an upcoming conference call in order to clarify the licensees amendment request for Peach Bottom Atomic Power Station, Units 2 and 3, dated July 10, 2014. The proposed amendment would revise Technical Specification (TS) requirements to address Generic Letter 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems, in accordance with TS Task Force (TSTF) Traveler TSTF-523, Revision 2.

The draft RAI was sent to Exelon to ensure that the questions are understandable, the regulatory basis for the questions is clear, and to determine if the information was previously docketed. This memorandum and the attachment do not convey or represent an NRC staff position regarding the licensee's request.

Docket Nos. 50-277 and 50-278

Attachment:

Draft RAI DISTRIBUTION PUBLIC WLyon, NRR/DSS/SRXB LPL1-2 R/F JWhitman, NRR/DSS/SRXB RidsNrrDorlLpl1-2 Resource MHamm, NRR/DSS/STSB RidsNrrDorlDpr Resource RidsNrrPMPeachBottom Resource ACCESSION NO.: ML15056A046 OFFICE LPL1-2/PM NAME REnnis DATE 02/24/15 OFFICIAL RECORD COPY

DRAFT REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED LICENSE AMENDMENT REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-523 EXELON GENERATION COMPANY, LLC PEACH BOTTOM ATOMIC POWER STATION - UNITS 2 AND 3 DOCKET NOS. 50-277 AND 50-278 By letter dated July 10, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14191B190), Exelon Generation Company, LLC (Exelon, the licensee) submitted a license amendment request for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The proposed amendment would revise Technical Specification (TS) requirements to address Generic Letter 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems, in accordance with TS Task Force (TSTF) Traveler TSTF-523, Revision 2.

The Nuclear Regulatory Commission (NRC) staff has reviewed the information the licensee provided that supports the proposed amendment and would like to discuss the following issues to clarify the submittal.

1. As discussed on page 2 of Attachment 1 to the application dated July 10, 2014, the licensee stated that the high pressure service water (HPSW) system components have been determined to not be required to be in the scope of a number of the surveillance requirements (SRs) due to operating experience and the design of the system.

a) Please describe the operating experience that justifies excluding the HPSW system from the scope of the SRs.

b) Please provide a description of the HPSW design in sufficient detail such that the NRC staff can independently assess the potential that gas accumulation could affect operability.