ML042470091

9/03/04, North Anna and Surry Power Stations, Units 1 and 2, RAI, Informational Bulletin 2003-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors.

ML042470091
Person / Time
Site:	Surry, North Anna
Issue date:	09/03/2004
From:	Stephen Monarque NRC/NRR/ADRO/DORL/LPLII-1
To:	Christian D Virginia Electric & Power Co (VEPCO)
Monarque, S R, NRR/DLPM, 415-1544
References
BL-03-001
Download: ML042470091 (5)

Text

September 3, 2004 Mr. David A. Christian Sr. Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.

Glen Allen, Virginia 23060-6711

SUBJECT:

NORTH ANNA AND SURRY POWER STATIONS, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING NRC BULLETIN 2003-01, POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY SUMP RECIRCULATION AT PRESSURIZED-WATER REACTORS

Dear Mr. Christian:

The NRC staff has reviewed your submittal dated August 7, 2003, which provided the 60-day response to NRC Bulletin 2003-01 for North Anna and Surry Power Stations, Units 1 and 2.

Your response to the enclosed request for additional information (RAI) is required in order for the NRC staff to complete its review.

Our questions are provided in the Enclosure. The NRC staff requests a response to the RAI within 60 days of the date of this letter.

Sincerely,

/RA/

Stephen R. Monarque, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-280, 50-281, 50-338, and 50-339

Enclosure:

As stated

September 3, 2004 Mr. David A. Christian Sr. Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.

Glen Allen, Virginia 23060-6711

SUBJECT:

NORTH ANNA AND SURRY POWER STATIONS, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING NRC BULLETIN 2003-01, POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY SUMP RECIRCULATION AT PRESSURIZED-WATER REACTORS

Dear Mr. Christian:

The NRC staff has reviewed your submittal dated August 7, 2003, which provided the 60-day response to NRC Bulletin 2003-01 for North Anna and Surry Power Stations, Units 1 and 2.

Your response to the enclosed request for additional information (RAI) is required in order for the NRC staff to complete its review.

Our questions are provided in the Enclosure. The NRC staff requests a response to the RAI within 60 days of the date of this letter.

Sincerely,

/RA/

Stephen R. Monarque, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-280, 50-281, 50-338, and 50-339

Enclosure:

As stated Distribution: ACRS KLandis DLPM DPR PUBLIC SMonarque AWang LWhitney PDII-1 Rdg. EDunnington (paper copy) EHackett DSolorio MKowal Adams Accession Number ML042470091 OFFICE PDII-1/PM PDII-2/LA PDII-1/SC NAME SMonarque EDunnington MJRoss-Lee DATE 09/01/04 09/01/04 09/02/04 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION NRC BULLETIN 2003-01, "POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY SUMP RECIRCULATION AT PRESSURIZED WATER REACTORS" NORTH ANNA AND SURRY POWER STATIONS, UNITS 1 AND 2 VIRGINIA ELECTRIC & POWER COMPANY By letter dated August 7, 2003, Virginia Electric & Power Company (VEPCO) provided the 60-day response to NRC Bulletin 2003-01 for the North Anna Power Station, Units 1 and 2 (NAPS) and Surry Power Stations, Units 1 and 2 (SPS). The Bulletin requested VEPCO to either (1) state that the emergency core cooling system (ECCS) and containment spray system (CSS) recirculation functions have been analyzed with respect to the potentially adverse post-accident debris blockage effects identified in the Bulletin and are in compliance with all existing applicable regulatory requirements, or (2) describe any interim compensatory measures that have been implemented or that will be implemented to reduce the interim risk associated with potentially degraded or nonconforming ECCS and CSS recirculation functions until an evaluation to determine compliance is complete. The NRC staff has completed its preliminary review of your response and has determined it needs the following additional information to complete our review:

North Anna Power Station

1. On page 3 of Attachment 1 of your NRC Bulletin 2003-01 response you state that the process to change and issue revisions to the ERGs [Emergency Response Guidelines]

to address containment sump blockage issues is expected to be completed by March 31, 2004. Dominion will participate in these WOG [Westinghouse Owners Group] activities, and evaluate any recommended changes to determine if they are appropriate for NAPS. The WOG has developed operational guidance in response to NRC Bulletin 2003-01 for Westinghouse and CE type pressurized-water reactors (PWRs). Please provide a discussion of your plans to consider implementing this new WOG guidance. Include a discussion of the WOG recommended compensatory measures that have been or will be implemented at your plant, and the evaluations or analyses performed to determine which of the WOG recommended changes are acceptable at your plant. Provide technical justification for those WOG recommended compensatory measures not being implemented by your plant. Also include a detailed discussion of the procedures being modified, the operator training being implemented, and your schedule for implementing these compensatory measures.

2. NRC Bulletin 2003-01 provides possible interim compensatory measures licensees could consider to reduce risks associated with sump clogging. In addition to those compensatory measures listed in Bulletin 2003-01, licensees may also consider implementing unique or plant-specific compensatory measures, as applicable. Please discuss any possible unique or plant-specific compensatory measures you considered for implementation at North Anna Power Station. Include a basis for rejecting any of these additional considered measures.

Enclosure

Surry Power Station

3. On page 3 of Attachment 2 of your NRC Bulletin 2003-01 response you state that the process to change and issue revisions to the ERGs to address containment sump blockage issues is expected to be completed by March 31, 2004. Dominion will participate in these WOG activities, and evaluate any recommended changes to determine if they are appropriate for SPS. The WOG has developed operational guidance in response to NRC Bulletin 2003-01 for Westinghouse and CE type PWRs.

Please provide a discussion of your plans to consider implementing this new WOG guidance. Include a discussion of the WOG recommended compensatory measures that have been or will be implemented at your plant, and the evaluations or analyses performed to determine which of the WOG recommended changes are acceptable at your plant. Provide technical justification for those WOG recommended compensatory measures not being implemented by your plant. Also include a detailed discussion of the procedures being modified, the operator training being implemented, and your schedule for implementing these compensatory measures.

4. NRC Bulletin 2003-01 provides possible interim compensatory measures licensees could consider to reduce risks associated with sump clogging. In addition to those compensatory measures listed in Bulletin 2003-01, licensees may also consider implementing unique or plant-specific compensatory measures, as applicable. Please discuss any possible unique or plant-specific compensatory measures you considered for implementation at Surry Power Station. Include a basis for rejecting any of these additional considered measures.

Virginia Electric and Power Company cc:

Ms. Lillian M. Cuoco, Esq. Office of the Attorney General Senior Counsel Commonwealth of Virginia Dominion Resources Services, Inc. 900 East Main Street Building 475, 5th Floor Richmond, Virginia 23219 Rt. 156, Rope Ferry Road Waterford, Connecticut 06385 Mr. Chris L. Funderburk, Director Nuclear Licensing & Operations Support Mr. Richard H. Blount, II Innsbrook Technical Center Site Vice President Dominion Resources Services, Inc.

Surry Power Station 5000 Dominion Blvd.

Virginia Electric and Power Company Glen Allen, Virginia 23060-6711 5570 Hog Island Road Surry, Virginia 23883-0315 Mr. Jack M. Davis Site Vice President Senior Resident Inspector North Anna Power Station Surry Power Station Virginia Electric and Power Company U. S. Nuclear Regulatory Commission Post Office Box 402 5850 Hog Island Road Mineral, Virginia 23117-0402 Surry, Virginia 23883 Mr. C. Lee Lintecum Chairman County Administrator Board of Supervisors of Surry County Louisa County Surry County Courthouse Post Office Box 160 Surry, Virginia 23683 Louisa, Virginia 23093 Dr. W. T. Lough Old Dominion Electric Cooperative Virginia State Corporation Commission 4201 Dominion Blvd.

Division of Energy Regulation Glen Allen, Virginia 23060 Post Office Box 1197 Richmond, Virginia 23218 Senior Resident Inspector North Anna Power Station Dr. Robert B. Stroube, MD, MPH U.S. Nuclear Regulatory Commission State Health Commissioner 1024 Haley Drive Office of the Commissioner Mineral, Virginia 23117 Virginia Department of Health Post Office Box 2448 Richmond, Virginia 23218 Mr. William R. Matthews Vice President - Nuclear Operations Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, Virginia 23060-6711