ML18153D179
| ML18153D179 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 11/20/1992 |
| From: | Buckley B, Engle L Office of Nuclear Reactor Regulation |
| To: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| Shared Package | |
| ML18153D180 | List: |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, NUDOCS 9211300392 | |
| Download: ML18153D179 (3) | |
Text
(
e e
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Docket Nos. 50-280, 50-281 and 50-338, 50-339 Mr. W. L. Stewart Senior Vice President - Nuclear Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060
Dear Mr. Stewart:
November 20, 1992
SUBJECT:
SAFETY EVALUATION OF NORTH ANNA POWER STATION, UNITS 1 AND 2, AND SURRY POWER STATION, UNITS 1 AND 2, 120-DAY RESPONSE TO SUPPLEMENT NO. 1 TO GENERIC LETTER 87-02 provides the NRC staff's evaluation of your response to Supplement No. 1 to Generic Letter (GL) 87-02 for the North Anna Power Station, Units 1 and 2, and the Surry Power Station, Units 1 and 2, which was submitted to.the staff in a letter dated September 18, 1992.
Supplement No. 1 to GL 87-02 required that all addressees provide, within 120 days of the issue date of the supplement, either a commitment to use both the Seismic Qualification Utility Group (SQUG) commitments and the implementation guidance described in the Generic Implementation Procedure, Revision 2 (GIP-2), as corrected on February 14, 1992, and as supplemented by the staff's Supplemental Safety Evaluation Report No. 2 (SSER No. 2) on GIP-2, or else provide an alternative method for responding to GL 87-02.
The supplement also required that those addressees committing to implement GIP-2 provide an implementation schedule, and provide the detailed information as to what procedures and criteria were used to generate the in-structure response spectra to be used for USI A-46.
In addition, the staff requested in SSER No. 2, that the licensees inform the staff in the 120-day response if they intend to change their licensing basis to reflect a commitment to the USI A-46 (GIP-2) methodology for verifying the seismic adequacy of mechanical and electrical equipment, prior to receipt of the staff's plant-specific safety evaluation resolving USI A-46.
Your response is unclear as to whether or not you intend to implement both the SQUG commitments and the implementation guidance.
The staff interprets your response as a commitment to the entire GIP-2 including both the SQUG commitments and the implementation guidance, and therefore considers it acceptable.
If the staff's interpretation is incorrect, then in accordance with Supplement No. 1 to GL 87-02, you should provide for staff review, as soon as pr act i cable prior to implementation; your alternative criteria and 11_.,,,,/
procedures for responding to GL 87-02. Additionally, you should not merely A/!JflJJ follow the _August 21, 1992, SQUG letter for implementing GIP-2 as stated in fl(~, ~lr 921f300392 921120 PDR ADOCK 05000280 p
\\
Mr. W. L. Stewart e e November 20, 1992 the staff's response to the SQUG letter. Although your proposed implementation schedules exceed the 3-year response period requested by the staff, you provided adequate justification for your schedules, and therefore, the schedules are acceptable.
Based on our review of your response and the staff positions delineated in the SSER No. 2, we conclude that your response with respect to in-structure response spectra for North Anna is adequate and acceptable, and the spectra included in the plant licensing basis (LB) documents may be used for the resolution of the USI A-46 issue. If you intend to use the option of developing or using "median-centered" in-structure response spectra, we request that you inform the staff the approximate date by which such information will become available.
Based on our review of your response concerning in-structure response spectra for Surry, we conclude that your response is adequate and acceptable.
You indicated that you intend to change your licensing basis methodology, via 10 CFR 50.59, for verifying the seismic adequacy of new, replacement, and existing electrical and mechanical equipment prior to receipt of a final plant-specific SER resolving USI A-46.
The staff recognizes that you may revise your licensing basis in accordance with 10 CFR 50.59 to reflect the acceptability of the USI A-46 (GIP) methodology for verifying the seismic adequacy of electrical and mechanical equipment covered by the GIP.
- However, if you do not intend to commit to fully implement both the SQUG commitments and the implementation guidance, or commit to an acceptable alternative criteria and procedures, then the staff does not find that it is feasible, at this time, for you to change your licensing basis in the manner described.
(Original Signed By.':):
Leon B. Engle, Project Manager Project Directorate 11-2 Division of Reactor Projects 1/11 Office of Nuclear Reactor Regulation
Enclosures:
As stated cc w/enclosures:
Sincerely, (Original Signed By)
Bart' C. Buckley, Sr. Project Manager Project Directorate 11-2 Division of Reactor Projects 1/11 Office of Nuclear Reactor Regulation See next page Distribution Docket File G. Lainas L. Engle NRC & Local PDRs PDII-2 RF E. Tana H. Berkow G. Bagchi, 7-H-15 OGC S. Varga B. Buckley J. Norberg, 7-E-23 Concurred ACRS 10 M. Sinkule, RII
- Previously OFFICE LA: POI I-2 C:ESGB*
NAME ETana Y--r GBagchi DATE II /e:?£J/92 11/19/92 OFFICE C: EMEB*
NAME JNorber DATE 11/20/92 Document Name - SU69484.GL
e Mr. W. L. Stewart Virginia Electric & Power Company cc:
Mr. William C. Porter, Jr.
County Administrator Louisa County P.O. Box 160 Louisa, Virginia 23093 Michael W. Maupin, Esq.
Hunton and Williams Riverfront Plaza, East Tower 951 E. Byrd Street Richmond, Virginia 23219 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation P.O. Box 1197 Richmond, Virginia 23209 Old Dominion Electric Cooperative 4201 Dominion Blvd.
Glen Allen, Virginia 23060 Mr. M. L. Bowling, Manager Nuclear Licensing & Programs Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060 Office of the Attorney General Supreme Court Building 101 North 8th Street Richmond, Virginia 23219 Senior Resident Inspector North Anna Power Station U.S. Nuclear Regulatory Commission Route 2, Box 78
- Mineral, Virginia 231172 e
North Anna Power Station Units 1 and 2 Robert B. Strobe, M.D., M.P.H.
State Health Commissioner Office of the Commissioner Virginia Department of Health P.O. Box 2448 Richmond, Virginia 23218