ML20128A650
| ML20128A650 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/30/1992 |
| From: | Gamberoni M Office of Nuclear Reactor Regulation |
| To: | Parker T NORTHERN STATES POWER CO. |
| Shared Package | |
| ML20128A652 | List: |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, TAC-M69474, TAC-M69475, NUDOCS 9212030415 | |
| Download: ML20128A650 (3) | |
Text
-
e o
UNITED $TATES Ig
.f g
NUCLE AR REGULATORY COMMISSION
- g, WASHINGTON D. C. 20555 November 30, 1992
....+
Docket Nos. 50-282 and 50-306 Mr. T. M. Parker, Manager Nuclear Support Services Northern States Power Company 414 Nicollet Mall Minneapolis, Minnesota 55401
Dear Mr. Parker:
SUBJECT:
SAFETY EVALUATION OF PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNIT NOS. 1 AND 2, 120-DAY RESPONSE TO SUPPL.EMENT NO. 1 TO GENERIC LETTER 87-02 (TAC N05. M69474 AND M69475)
Supplement No. I to Generic Letter (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 wqre 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 re70lving USI A-46.
By letter dated September 21, 1992, Northern States Power Company (NSP) submitted response to Supplement No. I to GL 87-02 for Prairie ?sland Nuclear Generating Plant.
Enclosed is our Safety Evaluation of the response to Supplement No. 14 is the Mechanical Engineering Branch Safety-Evaluation and Enciosure 2 is the Civil Engineering and Geoscience Branch Sc.fety tvaluatien.
Prairie Island's 120-day response to Generic Letter 87-02, Supplement I and the staff's review were discussed by the NRR project manager and Prairie Island on November 19, 1992.
Your response is unclear as to whether or not you intend to implement both the SQUG commitaents and the implementation guidance.
The staff interprets your response as a commitment to the entire GIP-2 including both the SQUG commitmer.ts and the implementation guidance and, therefore, considers it acceptable.
If this interpretation is incorrect, then in accordance with Supplement No. I to GL 87_-02, NSP should provide for staff review, as soon as practicable prior to implementation, your alternative criteria-and procedures for responding to GL 87-02.
Additionally, you should not merely follow the August 21, 1992, SQUG letter for implementing GIP-2 as
-a ye Oth i l
9212030416 92113o
~
- DR ADOCK 050002g2
%(
/
q Mr.-T. M. Parker
-2 November 30.-1992 Northern States Power Corporation stated in its submittal, but you should refer to Enclosure,3 to this letter which-provides the staff's response to the SQUG letter. The implementation schedule proposed by NSP is within the three-year response period requested by the staff in Supplement No, I to GL 87-02 and is, therefore, -acceptable. The NRC disagrees with your comments regarding the timing of staff responses to additional information requested from a licensee.
You should refer to Item I.2 in Enclosure 3 for the staff's position on this issue.
It is noted, that you did not indicate in your submittal that you intend to~ change your licensing basis to reflect a commitment to the USI A-46 methodology prior to receipt of the staff's plant-specific Safety Evaluation (SE).
If you have any questions concerning this review, please contact Marsha Gamberoni at (301)-504-3024.
Sincerely, Original signed by Marsha Gamberoni, Acting Project Manager Project Directorate 111-1 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation'
Enclosures:
1.
EMEB SE 2.
ECGB SE 3.
Staff's SQUG Response cc w/ enclosures:
See next page DISTRIBUTION DocketcFile*
1 NRC & Local PDRs PD31 Reading File JRoe TKing LMarsh MShuttleworth i
Plant - file WShafer, RIII LA:PDIII-l PM:PDIII-l EF D:PDIII-]
MShuttleworth MGamberont/v!b dud'UNG LMarsh 11/3'92 //f/
11/L5/92lJ 2
11/$0/92 DOCUMENT NAME: G:\\ PRAIRIE /PI69474.LTR m,g,g;,f l
u
re i n b
A
+
' Mr. T. M. Parker Northern States-Power Company cc:
Gersld Charnoff, Esquire Shaw, Pittman, Potts and Trowbridge 2300 N Street, N. W.
Washington DC 20037 Mr. E. L. Watzl, Site General Manger Prairie Island Nuclear Generating Plant Northern States Power Company Route 2 Welch, Minnesota 55089 Lisa R. Tiegel Assistant Attorney General Environmental Protection Division Suite 200 520 Lafayette Road St. Paul, Minnesota 55155 U.S. Nuclear Regulatory Commission Resident inspector Office 1719 Wakonade Drive East Welch, Minnesota 55089 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. William Miller, Auditor Goodhue County Courthouse Red Wing, Minnesota 55066 i :
Kris Sanda, Commissioner Director of Public Service 790 American Center Building 150 East Kellogg Boulevard St. Paul, Minnesota 55101