ML20212K966

Forwards Safety Evaluation Accepting plant-specific Safety Evaluation Rept for USI A-46 Program Implementation at Cooper Nuclear Station

ML20212K966
Person / Time
Site:	Cooper
Issue date:	09/30/1999
From:	Lawrence Burkhart NRC (Affiliation Not Assigned)
To:	Horn G NEBRASKA PUBLIC POWER DISTRICT
Shared Package
ML20212K971	List: ML20212K966 ML20212K978
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, TAC-M69439, NUDOCS 9910070116
Download: ML20212K966 (3)

Text

1 i ta O" '"E UNITED STATES je j

NUCLEAR REGULATORY COMMISSION WASHINGTON D.C. 20555-0001 September 30, 1999

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1 Mr. G. R. Horn Sr. Vice President of Energy Supply Nebraska Public Power District 141415th Street -

Columbus, NE 68601 ,

SUBJECT:

PLANT-SPECIFIC SAFETY EVALUATION REPORT FOR USl A-46 PROGRAM IMPLEMENTATION AT COOPER NUCLEAR STATION (TAC NO. M69439)

Dear Mr. Horn:

. On February 19,1987, the NRC issued Generic Letter (GL) 87-02, " Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Safety issue (USI) A-46." In the generic letter, the NRC staff described the process for resolving USl A-46, and encouraged the affected nuclear power plant licensees to participate in a generic program to resolve the seismic verification issues associated with USl A-46. As a result, the Seism!c Qualification Utility Group (SQUG) developed the " Generic Implementation Procedure (GIP) for Seismic Verification of Nuclear Plant Equipment," Revision 2 (GIP-2).

On May 22,1992, the NRC issued Supplement 1 to GL 87-02, which transmitted the staff's Supplemental Safety Evaluation Report No. 2 (SSER-2) on SQUG's GIP-2. Pursuant to the provisions of 10 CFR 50.54(f), Supplement 1 to GL 87-02 required that all addressees submit either (1) a commitment to use both the SQUG commitments and the implementation guidance described in GIP-2, as supplemented by SSER-2, or (2) an alternate method for responding to GL 87-02. The supplement also required that those addressees committing to implement GlP-2 submit an implementation schedule and detailed information on the procedures and criteria used to generate the in-structure response spectra (IRS) to be used for USl A-46.

By letter dated September 21,1992, Nebraska Public Power District (NPPD) responded to Supplement 1 to GL 87-02 for the Cooper Nuclear Station (CNS). In that letter, NPPD committed to comply with the commitments made by SQUG in GIP-2, including the clarifications, interpretations, and exceptions reported in SSER-2. The staff indicated its l acceptance of NPPD's response by letter dated November 25,1992.

By letter dated June 13,1996, NPPD submitted a summary report containing the results of the '

USI A-46 program implementation at CNS. By letter dated January 25,1999, NPPD sent g supplemental information and clarifications in response to the staff's request for additional information (RAl), dated October 7,1998. In the letter of January 25,1999, NPPD notified the

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NRC that it had completed the resolution of all the USI A-46 outliers for CNS. NPPD also indicated that each outlier was addressed through the plant corrective action program and was /

resolved through the utilization of CNS calculations, modification packages, or maintenance v work request packages.

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4 991007011'6 990930 PDR ADOCK 05000296 P PM

i G. R. Horn September 30, 1999 The staff concludes that NPPD's USl A-46 implementation program has, in general, met the j purpose and intent of the criteria in GlP-2 and the staff's SSER No. 2 for the resolution of USl l

A-46. ' The staff has determined that NPPD's corrective actions and completed physical modifications for the resolution of outliers will result in safety enhancements. Accordingly, these actions and modifications provide sufficient basis to close the USl A-46 review for the facility. The staff also concludes that NPPD's implementation program to resolve USl A-46 at the facility has adequately addressed the purpose of the 10 CFR 50.54(f) request. Licensee activities related to the USl A-46 Implementation are subject to NRC inspection.

Sincerely, l

ORIGINAL SIGNED BY Lawrence J. Burkhart, Project Manager, Section 1 Project Directorate IV & Decommissioning Division of Licensing Project Management i Office of Nuclear Reactor Regulation j Docket No. 50-298

Enclosure:

Safety Evaluation cc w/ enc!: See next page -

l DISTRIBUTION:

Docket File (50-298) C.Wu 1 PUBLIC S.Kim PDIV-1 r/f K.Desai C.Marschall, RIV - G.Galletti ACRS ' R.Scholl (email SE)

OGC R.Rothman

• No major changes made to SE.

To receive a copy of this document, indicate "c" in the box OFFICE PDIV-1/PM C PDIV-D/LA C EMCB* PDIV-1/SC C NAME LBurkhart:dtfb CJamersonh Elmbro RGramm G.b DATE 9 '/ ll /99 9/28/9%[ 07/16/99 #1/ 9 /99 ,

l DOCUMENT NAME: G:\PDIV-1\ COOPER \ltr69439.wpd OFFICIAL RECORD COPY l

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Cooper Nuclear Station cc:

Mr. G. R. Horn Ms. Cheryl K. Rogers, Program Manager Sr. Vice President of Energy Supply Nebraska Health & Human Services System Nebraska Public Power District Division of Public Health Assurance 141415th Street Consumer Services Section Columbus, NE 68601 301 Centennial Mall, South P. O. Box 95007 Mr. John R McPhail, General Counsel Lincoln, NE 68509-5007 Nebraska Public Power District P. O. Box 499 Mr. Ronald A. Kucera, Director Columbus, NE 68602-0499 of intergovernmental Cooperation Department of Natural Resources Mr. B. L. Houston, Nuclear Licensing P.O. Box 176 and Safety Manager Jefferson City, MO 65102 Nebraska Public Power District P. O. Box 98 Senior Resident inspector Brownville, NE 68321 U.S. Nuclear Regulatory Commission P. O. Box 218 Dr. William D. Leech Brownville, NE 68321 Manager-Nuclear MidAmerican Energy Regional Administrator, Region IV 907 Walnut Street U.S. Nuclear Regulatory Commission P. O. Box 657 611 Ryan Plaza Drive, Suite 1000 Des Moines, IA 50303-0657 Arlington,TX 76011 Mr. Ron Stoddard Jerry Uhlmann, Director Lincoln Electric System State Emergency Management Agency 1040 O Street P. O. Box 116 P. O. Box 80869 Jefferson City, MO 65101 Lincoln, NE 68501-0869 Chief, Radiation Control Program, RCP Mr. Michael J. Linder, Director Kansas Department of Health Nebraska Department of Environmental and Environment Quality Bureau of Air and Radiation P. O. Box 98922 Forbes Field Building 283 Lincoln, NE 68509-8922 Topeka,KS 66620 Chairman Nemaha County Board of Commissioners Nemaha County Courthouse 1824 N Street Auburn, NE 68305 september 28,1999 8