ML071930012

Response to Generic Letter 2006-02, Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power

ML071930012
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/20/2007
From:	James Kim NRC/NRR/ADRO/DORL/LPLI-1
To:	Balduzzi M Entergy Nuclear Operations
kim J, NRR/ADRO/DORL, 415-4125
References
GL-06-002, TAC MD1045
Download: ML071930012 (7)

Text

July 20, 2007 Mr. Michael A. Balduzzi Sr. Vice President & COO Regional Operations, NE Entergy Nuclear Operations, Inc.

440 Hamilton Avenue White Plains, NY 10601

SUBJECT:

VERMONT YANKEE NUCLEAR POWER STATION - RESPONSE TO GENERIC LETTER (GL) 2006-02 GRID RELIABILITY AND THE IMPACT ON PLANT RISK AND THE OPERABILITY OF OFFSITE POWER (TAC NO. MD1045)

Dear Mr. Balduzzi:

On February 1, 2006, the U.S. Nuclear Regulatory Commission (NRC) issued GL 2006-02, Grid Reliability and the Impact on Plant Risk and the Operability of Offsite Power (Agencywide Document Access and Management System (ADAMS) Accession No. ML060180352) to all holders of operating licenses for nuclear power reactors except those who have permanently ceased operation and have certified that fuel has been removed from the reactor vessel.

GL 2006-02 notified licensees of the NRC staffs need for information in four areas as follows:

(1) use of protocols between the nuclear power plant (NPP) and the transmission system operator (TSO), independent system operator (ISO), or reliability coordinator/authority (RC/RA) and the use of transmission load flow analysis tools (analysis tools) by TSOs to assist NPPs in monitoring grid conditions to determine the operability of offsite power systems under plant technical specifications. (The TSO, ISO, or RA/RC is responsible for preserving the reliability of the local transmission system. In this GL the term TSO is used to denote these entities);

(2) use of NPP/TSO protocols and analysis tools by TSOs to assist NPPs in monitoring grid conditions for consideration in maintenance risk assessments; (3) offsite power restoration procedures in accordance with Section 2 of NRC Regulatory Guide (RG) 1.155, Station Blackout; and (4) losses of offsite power caused by grid failures at a frequency equal to or greater than once in 20 site-years in accordance with RG 1.155.

Subsequent to the GL, the NRC issued a request for additional information (RAI), (ADAMS Accession No. ML063380308) regarding the resolution of GL 2006-02 to 63 of 65 holders of operating licenses for nuclear power reactors. The RAI requested licensees respond to questions in the following areas:

M. Balduzzi (1) Switchyard Minimum Voltage; (2) Loss of Real-Time Contingency Analysis (RTCA) Capability; (3) Verification of RTCA Predicted Post-Trip Voltage; (4) Identification of Applicable Single Contingencies; (5) Seasonal Variation in Grid Stress (reliability and Loss-of-offsite power (LOOP) Probability; (6) Interface With Transmission System Operator During Extended Plant Maintenance.

By letters dated April 3, 2006, (ADAMS Accession No. ML061000310) and April 14, 2006, (ADAMS Accession No. ML061140255) you responded to the information request of GL 2006-02. Based on the information you provided, the NRC staff has concluded that compliance is being maintained with NRC regulatory requirements governing electric power sources and associated personnel training and considers your response to GL 2006-02 complete.

If you have any questions, please contact me at 301-415-4125.

Sincerely,

/RA/

James Kim, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-271 cc: See next page

ML061000310) and April 14, 2006, (ADAMS Accession No. ML061140255) you responded to the information request of GL 2006-02. Based on the information you provided, the NRC staff has concluded that compliance is being maintained with NRC regulatory requirements governing electric power sources and associated personnel training and considers your response to GL 2006-02 complete.

If you have any questions, please contact me at 301-415-4125.

Sincerely,

/RA/

James Kim, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-271 cc: See next page DISTRIBUTION:

PUBLIC RidsNrrDorlLpl1-1 RidsOgcRP GWilson LPLI-1 R/F RidsNrrLASLittle RidsAcrsAcnwMailCenter RidsNrrPMJKim RidsRgn1MailCenter JRobinson ACCESSION NO.: ML071930012 OFFICE LPL1-1/PM LPL1-1/LA EEEB/BC LPL1-1/BC NAME JKim SLittle GWilson MKowal DATE 7/10/07 7/18/07 7/20/07 7/20/07 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, N.W. Ms. Charlene D. Faison Washington, DC 20037-1128 Manager, Licensing Entery Nuclear Operations Mr. David OBrien, Commissioner 440 Hamilton Avenue Vermont Department of Public Service White Plains, NY 10601 112 State Street Montpelier, VT 05620-2601 Resident Inspector Vermont Yankee Nuclear Power Station Mr. James Volz, Chairman U. S. Nuclear Regulatory Commission Public Service Board P.O. Box 176 State of Vermont Vernon, VT 05354 112 State Street Montpelier, VT 05620-2701 Director, Massachusetts Emergency Management Agency Chairman, Board of Selectmen ATTN: James Muckerheide Town of Vernon 400 Worcester Rd.

P.O. Box 116 Framingham, MA 01702-5399 Vernon, VT 05354-0116 Jonathan M. Block, Esq.

Operating Experience Coordinator Main Street Vermont Yankee Nuclear Power Station P.O. Box 566 320 Governor Hunt Road Putney, VT 05346-0566 Vernon, VT 05354 Mr. John F. McCann G. Dana Bisbee, Esq. Director, Nuclear Safety & Licensing Deputy Attorney General Entergy Nuclear Operations, Inc.

33 Capitol Street 440 Hamilton Avenue Concord, NH 03301-6937 White Plains, NY 10601 Chief, Safety Unit Mr. Michael R. Kansler Office of the Attorney General President & CEO / CNO One Ashburton Place, 19th Floor Entergy Nuclear Operations Boston, MA 02108 1340 Echelon Parkway Jackson, MS 39213

Vermont Yankee Nuclear Power Station cc:

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

1340 Echelon Parkway 440 Hamilton Avenue Jackson, MS 39213 White Plains, NY 10601 Mr. William F. Maguire Mr. Michael J. Colomb General Manager, Plant Operations Director of Oversight Entergy Nuclear Operations Entergy Nuclear Operations, Inc.

Vermont Yankee Nuclear Power Station 440 Hamilton Avenue 320 Governor Hunt Road White Plains, NY 10601 Vernon, VT 05354 Mr. William C. Dennis Mr. Oscar Limpias Assistant General Counsel Vice President, Engineering Entergy Nuclear Operations, Inc.

Entergy Nuclear Operations 440 Hamilton Avenue 1340 Echelon Parkway White Plains, NY 10601 Jackson, MS 39213 Mr. Theodore Sullivan Mr. John A. Ventosa Site Vice President GM, Engineering Entergy Nuclear Operations, Inc.

Entergy Nuclear Operations Vermont Yankee Nuclear Power Station 440 Hamilton Avenue P.O. Box 500 White Plains, NY 10601 185 Old Ferry Road Brattleboro, VT 05302-0500 Mr. Joseph P. DeRoy VP, Operations Support Mr. James H. Sniezek Entergy Operations, Inc. 5486 Nithsdale Drive 1340 Echelon Parkway Salisbury, MD 21801 Jackson, MS 39213 Mr. Garrett D. Edwards Mr. John R. Dreyfuss 814 Waverly Road Director, NSA Kennett Square, PA 19348 Entergy Nuclear Operations Vermont Yankee Nuclear Power Station Ms. Stacey M. Lousteau 320 Governor Hunt Road Treasury Department Vernon, VT 05354 Entergy Services, Inc.

639 Loyola Avenue Mr. David J. Mannai New Orleans, LA 70113 Manager, Licensing Entergy Nuclear Operations Vermont Yankee Nuclear Power Station P.O. Box 500 185 Old Ferry Road Brattleboro, VT 05302-0500

Vermont Yankee Nuclear Power Station cc:

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 Post Office 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 Ms. Charlene D. Faison Manager, Licensing 440 Hamilton Avenue White Plains, NY 10601