ML13312A021

October 29, 2013, Summary of Telephone Conference Call Held Between the U.S. Nuclear Regulatory Commission and Exelon Concerning RAI Set 2 for the Byron and Braidwood Station LRA

ML13312A021
Person / Time
Site:	Byron, Braidwood
Issue date:	05/05/2014
From:	Daily J Division of License Renewal
To:
John Daily 301-415-3873
References
TAC MF1879, TAC MF1880, TAC MF1881, TAC MF1882
Download: ML13312A021 (6)

Text

LICENSEE FACILITY:

SUBJECT UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May 5, 2014 Exelon Generation Company, LLC.

Byron Nuclear Station, Units 1 and 2 Braidwood Nuclear Station, Units 1 and 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 29, 2013, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND EXELON GENERATION COMPANY, LLC, CONCERNING RAI SET 2 FOR THE BYRON STATIONAND BRAIDWOOD STATION LICENSE RENEWAL APPLICATION (TAC NOS MF1879, MF1880, MF1881, AND MF1882)

The U S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC, (Exelon or the applicant) held a telephone conference call on October 29, 2013.

to discuss request for additional information (RAI), Set 2, plus RAJ 8.2.1.19-1, pertaining to the Byron Station and Braidwood Station license renewal application. The telephone conference call was useful in clarifying the RAis. provides a listing of the participants and Enclosure 2 contains a summary of the discussion The applicant had an opportunity to comment on this summary.

John~~~i~ger Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-454, 50-455, 50-456, and 50-457

Enclosures:

1. List of Participants 2 Discussion Summary cc w/encls: Listserv

• ML13112A021

• concurred via email OFFICE LA:RPB1 :DLR

'PM:RPB1 DLR BC:RPB1:DLR PM:RPB1:DLR NAME YEdmonds JDaily YDiazSanabria JDaily DATE

,411114 4115114 4115114 515114

PARTICIPANTS John Daily Bill Holston

' Carolyn Fairbanks I James Medoff Seung Min Cimberly Nickell John Hufnagel Maribel Valdez Ralph Walen Don Brindle AI Fulvia Don Warfel Casey Muggleston Albert Piha Gary Becknell Kevin Borton Dylan Cimock John Yacyshyn Tom Quintenz Leslie Holden

' ' Mark Kluge Paul Timmesch Gary Contrady TELEPHONE CONFERENCE CALL BYRON AND BRAIDWOOD STATIONS LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS October 29, 2013 AFFILIATIONS Nuclear Regulatory Commission (NRC)

NRC NRC NRC NRC NRC Exelon Generation Company, LLC (Exelon)

Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon Exelon i

Exelon

• ~

Exelon ENCLOSURE 1

SUMMARY

OF TELEPHONE CONFERENCE CALL ON REQUEST FOR ADDITIONAL INFORMATION, SET 2 INCLUDING RAt 8.2.U9-1, PERTAINING TO THE BYRON STATION AND BRAIDWOOD STATION LICENSE RENEWAL APPLICATION October 29. 2013 The U.S. Nuclear Regulatory Commission {NRC or the staff) and representatives of Exelon Generation Company, LLC, (Exelon or the applicant) held a telephone conference call on October 29,2013, to discuss Set 2 RAis and RAI 8.2.1.19-1 regarding the Byron-Braidwood license renewal application (LRA). The telephone conference call was useful in clarifying the RAts.

Discussion The staff and the applicant discussed RAts B.2.1.19-1, 8.2.1.23-1, 303-2, B.2.1.17-2, B.2.1 18-2, and 8.2.1.28-5, concerning the issues they raise in the LRA.

RAI 8.2.1.19-1: The staff explained its concerns that the LRA does not specify a withdrawal and testing schedule for a surveillance specimen capsule that has an exposure of one to two times the predicted reactor vessel wall neutron fluence at the end of the period of extended operation (i.e., one capsule for each reactor vessel), and the basis for this concern being the GALL Report, Revision 2, and the requirements of 10 CFR 50, Appendix H. The staff also expressed a concern as to apparently conflicting values for capsule exposures being presented in the LRA and values presented in an Exelon submittal to the NRC for a requested power uprate license amendment as opposed to values presented in the PTLRs and surveillance capsule reports. Following the discussion, Exelon stated that it understood the staff's concerns and would take them into consideration for its response to the RAI.

RAI 8.2.1.23-1: The staff and the applicant discussed the RAI requests and agreed that appropriate smear samples could be an acceptable method of showing whether soil contamination could potentially result in stress cracking corrosion of aluminum or stainless steel components exposed to outdoor air within the scope of license renewal.

RAI 3.0.3-2: The staff agreed to drop Request 1a and re-number the remaining portions of Request 1, since installation records are no longer a concern when a baseline inspection has been performed RAI 8.2.1 17 -2* The staff and the applicant agreed the title should reflect that this RAI applies to indoor as well as outdoor tanks.

RAI 8.2.1.28-3: The staff and the applicant agreed that the applicant had stated it could not "currently verify" the level of cathodic protection provided to certain portions of the piping system under discussion.

RAI 8.2.1.28-5: The staff and the applicant agreed that the request would reference that, in relation to the quality of coatings, the applicant would discuss its use of those coatings to address preventive action categories in LR-ISG-2011-03, Table 4a, "Inspections of Buried Pipe."

ENCLOSURE 2 The applicant stated that it understood the staff concerns as expressed in the RAis, and it would take them into consideration as it develops its responses.

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 29, 2013, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND EXELON GENERATION COMPANY, LLC, CONCERNING RAI SET 2 FOR THE BYRON STATIONAND BRAIDWOOD STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF1879, MF1880, MF1881, AND MF1882)

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PUBLIC RidsNrrDir Resource RidsNrrDirRpb1 Resource RidsNrrDirRpb2 Resource RidsOgcMaiiCenter RidsNrrPMByron Resource RidsNrrPMBraidwood Resource JDaily LRobinson WHolston SMin JMedoff CFairbanks CNickell DMclntyre, OPA EDuncan, Rill JBenjamin, Rill AGarmoe, Rill SRI, Byron Station, Rill JRobbins, Rill VMitlyng, Rill PChandrathil, Rill