ML073610469

Summary of Telephone Conf Call Held on 10/23/07 Between NRC and Entergy Nuclear Operations Concerning Audit Questions Pertaining to the Vermont Yankee Nuclear Power Station LRA

ML073610469
Person / Time
Site:	Vermont Yankee
Issue date:	01/02/2008
From:	Rowley J NRC/NRR/ADRO/DLR
To:
Rowley J, NRR/DLR/RLRB, 415-4053
References
Download: ML073610469 (9)

Text

January 2, 2008 LICENSEE: Entergy Nuclear Operations, Inc.

FACILITY: Vermont Yankee Nuclear Power Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 23, 2007, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY NUCLEAR OPERATIONS, INC., CONCERNING AUDIT QUESTIONS PERTAINING TO THE VERMONT YANKEE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Nuclear Operations, Inc., (Entergy) held a telephone conference call on October 23, 2007, to discuss and clarify the staff=s audit questions concerning the Vermont Yankee Nuclear Power Station (VYNPS) license renewal application asked during the October 9-10, 2007, audit of the VYNPS time-limited aging analyses. While attempting to address the staffs audit questions, Entergy determined that further clarification was needed on some of the questions. The telephone conference call was useful in clarifying the intent of the staff=s audit questions. provides a listing of the participants and Enclosure 2 contains a listing of the audit questions discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

Jonathan G. Rowley, Project Manager /RA/

Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-271

Enclosures:

As stated cc w/encls: See next page

ML073610469 OFFICE LA:DLR PM:RPOB:DLR BC:RPB2:DLR NAME SFigueroa JRowley RFranovich DATE 12/28/07 12/31/07 01/02/08 TELEPHONE CONFERENCE CALL VERMONT YANKEE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS OCTOBER 23, 2007 PARTICIPANTS AFFILIATIONS Jonathan Rowley U.S. Nuclear Regulatory Commission (NRC)

Kenneth Chang NRC Rajender Auluck NRC Robert Hsu NRC Peter Wen NRC On Yee NRC Michael Metell Entergy Nuclear Operations, Inc. (Entergy)

David Mannai Entergy James Fitzpatrick Entergy Alan Cox Entergy Scott Goodwin Entergy David Lach Entergy Gary Young Entergy ENCLOSURE 1

REQUESTS FOR ADDITIONAL INFORMATION (RAI)

VERMONT YANKEE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION OCTOBER 23, 2007 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Nuclear Operations, Inc., held a telephone conference call on October 23, 2007, to discuss and clarify the following audit questions concerning the Vermont Yankee Nuclear Power Station (VYNPS) license renewal application (LRA). The audit questions had been first discussed during a telephone conference call on October 16, 2007. Additional discussion and clarification was required after Entergy had several days to ponder each question.

1st Audit question The ASME Code defines that stress intensity from two temperature transients is calculated from the stress components from the two conditions. Please explain how it could be calculated from stress intensities of the two conditions derived from Greens functions, especially at locations of geometric discontinuity. Also, please justify the validity of combining the thermal transient stress intensities with the stress intensities from the external loads and pressure loading.

Discussion: The applicant indicated that the question is clear.

2nd Audit question Provide justification for statement on page 5 of 34 of Calculation No. VY-16Q-302 that, AThe Greens function methodology provides identical results compared to running the input transient through the finite element model.@

Discussion: The applicant indicated that the question is clear.

3rd Audit question For the blend radius for the feedwater nozzle in Calculation No. VY-16Q-302, Table 4, Page 16, why are the Total and M+B stresses for thermal transient 3, shown in columns 3 and 4, high at 0 seconds (t = 0)? This question also applies to transient 4 at t = 1801.9 seconds, transient 9 at t = 2524 seconds, and transient 21-23 at t = 20144 seconds.

Discussion: The applicant indicated that the question is clear.

4th Audit question Explain why there are differences in the calculated cumulative usage factor (CUF) values between Rev. A and Rev. 0 of the Structural Integrity calculations. Also, why are the CUFs calculated by Structural Integrity different from the CUFs shown in Tables 4.3.1 and 4.3.3 of the Vermont Yankee license renewal application?

ENCLOSURE 2

Discussion: The applicant indicated that the question is clear.

5th Audit question Page 1-1 of Report VY-16Q-401 indicates that refined transient definitions for 60 years of operation are used in the computation of the CUF incorporating environmentally assisted fatigue effects. Please explain the refinements in the transient definitions.

Discussion: The applicant indicated that the question is clear.

6th Audit question For the feedwater nozzles, there are large differences between the CUFs without the environmental fatigue life correction (Fen) factors shown in Table 4.3.1 of the Vermont Yankee license renewal application and those shown in Calculation No. VY-16Q-302. Section 2.0 of the calculation on page 4 of 32 states, A... several of the conservatisms originally used in the original feedwater evaluation (such as grouping of transients) are removed... .@ Please explain what conservatisms were removed.

Discussion: The applicant indicated that the question is clear.

7th Audit question For stainless steel components listed in Table 3-10 of the Structural Integrity Report SIR-07-132 (VY-16Q-404), please justify that the calculated Fen values are conservative.

Discussion: The staff removed the question. The staff determined that this question did not need to be asked.

Memo to Entergy Nuclear Operations, Inc., from J. Rowley dated January 2, 2008 DISTRIBUTION:

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 23, 2007, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY NUCLEAR OPERATIONS, INC., CONCERNING AUDIT QUESTIONS PERTAINING TO THE VERMONT YANKEE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION HARD COPY:

DLR RF E-MAIL:

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Vermont Yankee Nuclear Power Station cc:

Regional Administrator, Region I Ms. Carla A. White, RRPT, CHP U.S. Nuclear Regulatory Commission Radiological Health 475 Allendale Road Vermont Department of Health King of Prussia, PA 19406-1415 P.O. Box 70, Drawer #43 108 Cherry Street Mr. David R. Lewis Burlington, VT 05402-0070 Pillsbury, Winthrop, Shaw, Pittman, LLP 2300 N Street, NW Mr. David Mannai Washington, DC 20037-1128 Manager, Licensing Entergy Nuclear Operations Mr. David OBrien, Commissioner Vermont Yankee Nuclear Power Station Vermont Department of Public Service P.O. Box 500 112 State Street 185 Old Ferry Road Montpelier, VT 05620-2601 Brattleboro, VT 05302-0500 Mr. James Volz, Chairman Resident Inspector Public Service Board Vermont Yankee Nuclear Power Station State of Vermont U.S. Nuclear Regulatory Commission 112 State Street P.O. Box 176 Montpelier, VT 05620-2701 Vernon, VT 05354 Chairman, Board of Selectmen Director, Massachusetts Emergency Town of Vernon Management Agency P.O. Box 116 ATTN: James Muckerheide Vernon, VT 05354-0116 400 Worcester Road Framingham, MA 01702-5399 Operating Experience Coordinator Vermont Yankee Nuclear Power Station Jonathan M. Block, Esq.

320 Governor Hunt Road Main Street Vernon, VT 05354 P.O. Box 566 Putney, VT 05346-0566 G. Dana Bisbee, Esq.

Deputy Attorney General Mr. John F. McCann 33 Capitol Street Director, Licensing Concord, NH 03301-6937 Entergy Nuclear Operations, Inc.

440 Hamilton Avenue Chief, Safety Unit White Plains, NY 10601 Office of the Attorney General One Ashburton Place, 19th Floor Mr. John T. Herron Boston, MA 02108 Sr. Vice President Entergy Nuclear Operations, Inc.

1340 Echelon Parkway Jackson, MS 39213

Vermont Yankee Nuclear Power Station cc:

Mr. Oscar Limpias Ms. Stacey M. Lousteau Vice President, Engineering Treasury Department Entergy Nuclear Operations, Inc. Entergy Services, Inc.

1340 Echelon Parkway 639 Loyola Avenue Jackson, MS 39213 New Orleans, LA 70113 Mr. Christopher Schwartz Mr. Norman L. Rademacher Vice President, Operations Support Director, NSA Entergy Nuclear Operations, Inc. Vermont Yankee Nuclear Power Station 440 Hamilton Avenue P.O. Box 0500 White Plains, NY 10601 185 Old Ferry Road Brattleboro, VT 05302-0500 Mr. Michael J. Colomb Director of Oversight Mr. Raymond Shadis Entergy Nuclear Operations, Inc. New England Coalition 440 Hamilton Avenue P.O. Box 98 White Plains, NY 10601 Edgecomb, ME 04556 Mr. William C. Dennis Mr. James P. Matteau Assistant General Counsel Executive Director Entergy Nuclear Operations, Inc. Windham Regional Commission 440 Hamilton Avenue 139 Main Street, Suite 505 White Plains, NY 10601 Brattleboro, VT 05301 Mr. Theodore Sullivan Mr. William K. Sherman Site Vice President Vermont Department of Public Service Entergy Nuclear Operations, Inc. 112 State Street Vermont Yankee Nuclear Power Station Drawer 20 P.O. Box 500 Montpelier, VT 05620-2601 185 Old Ferry Road Brattleboro, VT 05302-0500 Mr. Michael D. Lyster 5931 Barclay Lane Mr. James H. Sniezek Naples, FL 34110-7306 5486 Nithsdale Drive Salisbury, MD 21801 Diane Curran, Esq.

Harmon, Curran, Spielberg &

Mr. Garrett D. Edwards Eisenberg, L.L.P 814 Waverly Road 1726 M Street, NW, Suite 600 Kennett Square, PA 19348 Washington, DC 20036

Vermont Yankee Nuclear Power Station cc:

Ronald A. Shems, Esq.

Shems, Dunkiel, Kassel & Saunders, PLLC 91 College Street Burlington, VT 05401 Karen Tyler, Esq.

Shems, Dunkiel, Kassel & Saunders, PLLC 91 College Street Burlington, VT 05401 Sarah Hofmann, Esq.

Director of Public Advocacy Department of Public Service 112 State Street - Drawer 20 Montpelier, VT 05620-2601 Jennifer J. Patterson, Esq.

Office of the New Hampshire Attorney General 33 Capitol Street Concord, NH 03301 Matias F. Travieso-Diaz, Esq.

Pillsbury, Winthrop, Shaw, Pittman, LLP 2300 N Street, NW Washington, DC 20037-1128 Matthew Brock, Esq.

Assistant Attorney General Office of the Massachusetts Attorney General Environmental Protection Division One Ashburton Place, Room 1813 Boston, MA 02108-1598 Anthony Z. Roisman, Esq.

National Legal Scholars Law Firm 84 East Thetford Road Lyme, NH 03768