ML073610469: Difference between revisions

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| issue date = 01/02/2008
| issue date = 01/02/2008
| title = 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
| title = 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
| author name = Rowley J G
| author name = Rowley J
| author affiliation = NRC/NRR/ADRO/DLR
| author affiliation = NRC/NRR/ADRO/DLR
| addressee name =  
| addressee name =  

Revision as of 17:18, 12 July 2019

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 Entergy icon.png
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

SUBJECT:

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 staff's 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.

Enclosure 1 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 ENCLOSURE 1 TELEPHONE CONFERENCE CALL VERMONT YANKEE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS OCTOBER 23, 2007

PARTICIPANTS AFFILIATIONSJonathan 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 2 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.

1 st 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 Green's 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.

2 nd Audit question

Provide justification for statement on page 5 of 34 of Calculation No. VY-16Q-302 that, AThe Green's 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.

3 rd 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.

4 th 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?

Discussion: The applicant indicated that the question is clear.

5 th 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.

6 th 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.

7 th 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

SUBJECT:

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: PUBLIC SSmith (srs3)

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JRowley RLaufer JShea RPowell, RI DScrenci, RI MModes, RI DPelton, SRI MYoung RidsOpaMail

Vermont Yankee Nuclear Power Station

cc: Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406-1415

Mr. David R. Lewis Pillsbury, Winthrop, Shaw, Pittman, LLP 2300 N Street, NW Washington, DC 20037-1128

Mr. David O'Brien, Commissioner Vermont Department of Public Service 112 State Street Montpelier, VT 05620-2601

Mr. James Volz, Chairman Public Service Board State of Vermont 112 State Street Montpelier, VT 05620-2701

Chairman, Board of Selectmen Town of Vernon P.O. Box 116 Vernon, VT 05354-0116

Operating Experience Coordinator Vermont Yankee Nuclear Power Station 320 Governor Hunt Road Vernon, VT 05354

G. Dana Bisbee, Esq.

Deputy Attorney General 33 Capitol Street Concord, NH 03301-6937

Chief, Safety Unit Office of the Attorney General One Ashburton Place, 19th Floor Boston, MA 02108

Ms. Carla A. White, RRPT, CHP Radiological Health Vermont Department of Health P.O. Box 70, Drawer #43 108 Cherry Street Burlington, VT 05402-0070

Mr. David Mannai Manager, Licensing Entergy Nuclear Operations Vermont Yankee Nuclear Power Station P.O. Box 500 185 Old Ferry Road Brattleboro, VT 05302-0500

Resident Inspector Vermont Yankee Nuclear Power Station U.S. Nuclear Regulatory Commission P.O. Box 176 Vernon, VT 05354

Director, Massachusetts Emergency Management Agency ATTN: James Muckerheide 400 Worcester Road Framingham, MA 01702-5399

Jonathan M. Block, Esq.

Main Street P.O. Box 566 Putney, VT 05346-0566

Mr. John F. McCann Director, Licensing Entergy Nuclear Operations, Inc.

440 Hamilton Avenue White Plains, NY 10601

Mr. John T. Herron Sr. Vice President Entergy Nuclear Operations, Inc.

1340 Echelon Parkway Jackson, MS 39213

Vermont Yankee Nuclear Power Station

cc: Mr. Oscar Limpias Vice President, Engineering Entergy Nuclear Operations, Inc.

1340 Echelon Parkway Jackson, MS 39213

Mr. Christopher Schwartz Vice President, Operations Support Entergy Nuclear Operations, Inc.

440 Hamilton Avenue White Plains, NY 10601

Mr. Michael J. Colomb Director of Oversight Entergy Nuclear Operations, Inc.

440 Hamilton Avenue White Plains, NY 10601

Mr. William C. Dennis Assistant General Counsel Entergy Nuclear Operations, Inc.

440 Hamilton Avenue White Plains, NY 10601

Mr. Theodore Sullivan Site Vice President Entergy Nuclear Operations, Inc.

Vermont Yankee Nuclear Power Station P.O. Box 500 185 Old Ferry Road Brattleboro, VT 05302-0500

Mr. James H. Sniezek 5486 Nithsdale Drive Salisbury, MD 21801

Mr. Garrett D. Edwards 814 Waverly Road Kennett Square, PA 19348

Ms. Stacey M. Lousteau Treasury Department Entergy Services, Inc.

639 Loyola Avenue New Orleans, LA 70113

Mr. Norman L. Rademacher Director, NSA Vermont Yankee Nuclear Power Station P.O. Box 0500 185 Old Ferry Road Brattleboro, VT 05302-0500

Mr. Raymond Shadis New England Coalition P.O. Box 98 Edgecomb, ME 04556

Mr. James P. Matteau Executive Director Windham Regional Commission 139 Main Street, Suite 505 Brattleboro, VT 05301

Mr. William K. Sherman Vermont Department of Public Service 112 State Street Drawer 20 Montpelier, VT 05620-2601

Mr. Michael D. Lyster 5931 Barclay Lane Naples, FL 34110-7306

Diane Curran, Esq.

Harmon, Curran, Spielberg &

Eisenberg, L.L.P 1726 M Street, NW, Suite 600 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