ML15106A812

04/07-08/2015 Summary of Severe Accidents Mitigation Alternatives Audit for LaSalle County Station, Units 1 and 2 (TAC Nos. MF5567 and MF5568)

ML15106A812
Person / Time
Site:	LaSalle
Issue date:	04/24/2015
From:	Wittick B D License Renewal Projects Branch 2
To:	Gallagher M P Exelon Generation Co
Drucker D M, 415-6223
References
TAC MF5567, TAC MF5568
Download: ML15106A812 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 24, 2015 Mr. Michael P. Gallagher Vice President, License Renewal Projects Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348

SUBJECT:

SUMMARY OF THE SEVERE ACCIDENT MITIGATION ALTERNATIVES AUDIT FOR LASALLE COUNTY STATION, UNITS 1 AND 2 (TAC NOS. MF5567 AND MF5568)

Dear Mr. Gallagher:

On April 7-8, 2015, a review team consisting of staff from the U.S. Nuclear Regulatory Commission (NRC) and contractors from the Center for Nuclear Waste Regulatory Analyses participated in a site audit at the Exelon Generation Company, LLC (Exelon) office in Kennett Square, Pennsylvania, related to the severe accidents mitigation alternatives (SAMA) analysis of the LaSalle County Station, Units 1 and 2 (LSCS) license renewal application. The goal of the audit was to review documentation and gather information to ensure that the environmental requirements for license renewal, as codified in Title 10 of the Code of Federal Regulations Part 51 were met. A letter dated March 31, 2015, and available in the Agencywide Documents Access and Management System under Main Library (ML) 15083A546, was sent to you containing an audit needs list in support of the audit. Enclosed is a list of the audit participants.

The audit began on April 7, 2015, with an entrance meeting to introduce participants and discuss audit logistics. Next, participants discussed the following topics relative to the Severe Accident Mitigation Alternative (SAMA) analysis: (1) Level 1 Probabilistic Risk Assessment (PRA), (2) Level 2 model PRA, (3) external events, (4) Level 3 consequence analysis, (5) selection and screening of Phase 1 SAMAs, (6) cost-benefit analysis and site-specific cost estimates, and (7) consideration of potentially lower or more effective alternative SAMAs.

M. Gallagher NRC staff is preparing requests for additional information (RAIs), which will be issued in a subsequent letter. If you have any questions on this matter, please contact David Drucker by telephone at 301-415-6223 or by e-mail at David.Drucker@nrc.gov. Sincerely, /RA/

Brian D. Wittick, Chief Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374

Enclosure:

As stated cc w/encl: Listserv M. Gallagher NRC staff is preparing requests for additional information (RAIs), which will be issued in a subsequent letter. If you have any questions on this matter, please contact David Drucker by telephone at 301-415-6223 or by e-mail at David.Drucker@nrc.gov. Sincerely, /RA/

Brian D. Wittick, Chief Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374

Enclosure:

As stated cc w/encl: Listserv DISTRIBUTION: See next page ADAMS Accession No.: ML15106A812 (Letter) *concurred via email OFFICE LA:DLR:RPB2* PM:RPB2:DLR BC:RPB2:DLR NAME SWoods DDrucker BWittick DATE 4/20/2015 4/15/2015 4/24/15 OFFICIAL RECORD COPY Letter to Michael Gallagher from Brian D. Wittick dated April 24, 2015

SUBJECT:

SUMMARY OF THE SEVERE ACCIDENTS MITIGATION ALTERNATIVES AUDIT FOR LASALLE COUNTY STATION, UNITS 1 AND 2 (TAC NOS. MF5567 AND MF5568) DISTRIBUTION: HARD COPY: DLR RF E-MAIL: PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMLaSalle Resource --------------- J. Mitchell R. Plasse Y. Diaz-Sanabria D. Drucker B. Wittick J. Dozier J. Wachutka, OGC D. McIntyre, OPA M. Kunowski, RIII V. Mitlyng, RIII P. Chandrathil, RIII H. Logaras, RIII A. Stone, RIII C. Lipa, RIII S. Sheldon, RIII J. Robbins, RIII R. Ruiz, RIII ENCLOSURE LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION REVIEW SEVERE ACCIDENTS MITIGATION ALTERNATIVES AUDIT April 7-8, 2015 PARTICIPANT ORGANIZATION David Drucker U.S. Nuclear Regulatory Commission (NRC) Jerry Dozier NRC Bob Schmidt Center for Nuclear Waste Regulatory Analyses (CNWRA) Roland Benke CNWRA Daniel Speaker CNWRA Gene Kelly Exelon Generation Company, LLC (Exelon) Chris Wilson Exelon Nancy Ranek Exelon Mike Gallagher Exelon Don MacLeod ERIN Engineering Heather Fox ERIN Engineering Alex Duvall ERIN Engineering Mike Banko FirstEnergy Rich Siembor FirstEnergy