ML12018A165

Summary of Telephone Conference Call Held on November 9, 2011, Between the NRC and Firstenergy Nuclear Operating Company, Concerning RAI Pertaining to the Davis-Besse, LRA

ML12018A165
Person / Time
Site:	Davis Besse
Issue date:	01/27/2012
From:	Cuadradodejesus S License Renewal Projects Branch 1
To:	FirstEnergy Nuclear Operating Co
CuadradoDeJesus S, 415-2946
References
TAC ME4640
Download: ML12018A165 (5)

Text

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• • • • il LICENSEE: FirstEnergy Nuclear Operating Company FACILITY: Davis-Besse Nuclear Power Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON NOVEMBER 9,2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND FIRSTENERGY NUCLEAR OPERATING COMPANY, CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE DAVIS-BESSE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION (TAC. NO. ME4640)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of FirstEnergy Nuclear Operating Company (FENOC or the applicant) held a telephone conference call on November 9, 2011, to discuss and clarify the applicant's responses to the staff's requests for additional information concerning the Davis-Besse Nuclear Power Station license renewal application.

Enclosure 1 provides a listing of the participants and Enclosure 2 contains a description of the staff concerns discussed with the applicant. A brief description on the status of the items is also included.

The applicant had an opportunity to comment on this summary.

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mu~1 Cuadrado de Jesus

/ Project Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-346

Enclosures:

As stated cc w/encls: Listserv

SUMMARY

OF TELEPHONE CONFERENCE CALL DAVIS-BESSE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS NOVEMBER 9, 2011 PARTICIPANTS AFFILIATIONS Samuel Cuadrado de Jesus U.S. Nuclear Regulatory Commission (NRC)

James Gavula NRC Cliff Custer FirstEnergy Nuclear Operating Company (FENOC)

Steve Dort FENOC Allen McAllister FENOC Larry Hinkle FENOC Don Kosloff FENOC ENCLOSURE 1

SUMMARY

OF TELEPHONE CONFERENCE CALL DAVIS-BESSE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION NOVEMBER 9, 2011 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of FirstEnergy Nuclear Operating Company (FENOC or the applicant) held a telephone conference call on November 9, 2011, to discuss and clarify the following response to requests for additional information (RAls) concerning the Davis-Besse Nuclear Power Station license renewal application (LRA).

Response to RAI 2.3.3.18-4 Discussion:

The staff noted that in its response to RAI 2.3.3.18-4 dated October 21, 2011, the applicant stated that the "letdown coolers are in continuous service and not subject to cyclic loading, eddy current testing of tubes for managing cyclic loading is therefore not applicable." However, the staff noted that in its August 17, 2011, response to an RAI, the applicant stated that the B&W report regarding the reliability of letdown coolers identified the cause of the recurring tube leaks as fatigue cracking likely initiated by flow-induced vibration.

The staff stated that while it agrees that the coolers may be in continuous service, there does not appear to be a technical basis for stating that the coolers are not subject to cyclic loading, based on the information previously provided by the applicant. The staff also stated that unless there is some previously undisclosed additional information, fatigue cracking due to flow-induced vibration appears to demonstrate that the letdown cooler tubes are subject to cyclic loading.

After discussions, the applicant agreed that the statement, "The coolers are in continuous service and not subject to cyclic loading ... ," only considered thermal fatigue (i.e., low cycle fatigue). Since the coolers are subject to fatigue cracking due to flow-induced vibration (i.e.,

high cycle fatigue), the applicant agreed to delete or modify the statement. In addition, the applicant agreed to provide a supplemental response to RAI 2.3.3.18-4 to include an enhancement to the Closed Cooling Water Chemistry Program to ensure that component cooling water radiochemistry is sampled on a periodic basis to verify the integrity of the letdown coolers.

ACTION: FENOC to provide a supplemental response to RAI 2.3.3.18-4 to address the above issues.

ENCLOSURE 2

January 27, 2012 LICENSEE: FirstEnergy Nuclear Operating Company FACILITY: Davis-Besse Nuclear Power Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON NOVEMBER 9,2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND FIRSTENERGY NUCLEAR OPERATING COMPANY, CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE DAVIS-BESSE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION (TAC. NO. ME4640)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of FirstEnergy Nuclear Operating Company (FENOC or the applicant) held a telephone conference call on November 9, 2011, to discuss and clarify the applicant's responses to the staff's requests for additional information concerning the Davis-Besse Nuclear Power Station license renewal application. provides a listing of the participants and Enclosure 2 contains a description of the staff concerns discussed with the applicant. A brief description on the status of the items is also included.

The applicant had an opportunity to comment on this summary.

IRA!

Samuel Cuadrado de Jesus Project Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-346

Enclosures:

As stated cc w/encls: Listserv DISTRIBUTION:

See next page ADAMS Accession No.: ML12018A165 *concurred via email CE LA: RPB2:DLR* PM:RPB1 :DLR BC:RPB1 :DLR E IKing SCuadrado de DMorey Jesus DATE 1/25/12 1/26/12 1/27/12 OFFICIAL RECORD COpy

Memorandum to FirstEnergy Nuclear Operating Company from S. Cuadrado DeJesus dated January 27,2012

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON NOVEMBER 9,2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND FIRSTENERGY NUCLEAR OPERATING COMPANY, CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE DAVIS-BESSE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION (TAC. NO. ME4640)

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