ML20106A550
| ML20106A550 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 09/17/1992 |
| From: | Shelton D CENTERIOR ENERGY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR 2090, GL-87-02, GL-87-2, NUDOCS 9209290006 | |
| Download: ML20106A550 (3) | |
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GMTGRIOR ENERGY DoneH C. StWton 300 M&m Avenue Vice Pmrtnl 4,cu tow OH 43652 0001 Drwishw (4i9)249 7300 Docket Number 50-346 License Number NPF-3 Serial Number 2090 September 17, l992 United States Nuclear Regulatory Commis31on Dotu m t Control Deck Vasb' gton, D.C. 20555
Subject:
Response to Supplement 1 of the Nuclear Regulatory Commission Generic Letter 87-02, " Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Safety Issue (USI) A-46" Gentlemen:
Generic Letter 87-02 " Verification of Seism;c Adequacy of Mechanical and Electrical Equipment in Operating P.cactors, Unresolved Safety Issue (USI) A-46" was issued by the NRC on February 19, 1987.
This Generic Letter eacouraged utilities to participate in a generic progcam to resolve the seismic verification issues associated with USL A-46.
As a result. the -Seismic Qualification Utili ty Group (SQUG) developed the " Generic Implementation Procedure ' GIP) for Seismic Verification of Nuclear Plant Equipment". On May 22. 1.992, the NRC Staff issued Generic Letter 87-02, Supplement 1, which constituted the NRC Staff's review of the GIP and included Supplemental Safety Evaluation Report Number 2 (SSER-2) on the GIP (whera " GIP" refers to GIP, Revision 2, corrected February 14, 1992). The letter to SOUG enclosing SSER-2 requests that SQUG member utilities provide to the NRC, within 120 days, a schedule for implementing the GIP.
In a letter to Mr. James G.
Partlov, NEC/NRR Associate Director tot Projects, dated August 21, 1992, SQUG clarifkd that the 120 days vould expire on September 21, 1992.
This letter provides Toledo Edison's response to the Staff's request.
As a memt_
of SQUG, Toledo Edison commits to use the SUUG methodo1 3gy as documented in the GIP Bevision 2 to resolve USI A-46 at Davis-hesse Nuclear Power Station.
The GIP, as evaluated by the Staff, permits-licensees to deviate from the SQUG commitments embodied in the Commit < + sections, provided the Staff is notified of substantial deviat.- ' prior to implem ntation. Toledo Edison recognizes that the j
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-Statf's position in SSER-2 is that, if licensees use other methods that deviate from the criteria and procedures as described in SOUG commitments nnd in the implementation' guidance of the GIP, Revision 2, vithout prior NRC staff approval, the iethod may not-be acceptable to the staff and, therefore, may result in a deviation from the provisions of Generic Letter 87-02" Sptcifically. Tolede Edison hereby commits to-comply with the SOUG commitments set forth in the GlP in their entirety, including the clarifications,. internretatinos, and exceptions identified in SSER-2 as clarified by the August 21, 1992, SOUG. letter responding to SSER-2.
Toledo Edison vill be generally gulbot by the remaining (non-commitment) sections of the GlP..i.e.,
implementation guidance, which comprises suggested methods for implementing the applicable cummi tments. Toledo Edison vill notify the NRC as soon as pncticable, but no later than the final USI A-46 summary report, of significant or programmatic deviations from the guidance portions of the GIP.
Justifications for such deviations, vill be retained on site for N1 ' review.
Toledo Edison vill use the options provided in the GIP for defining selsu.ic demand (m Ilan-centered and conservative, desien in-structure response spectra) as appropriate, depending'on the building, the Iccation of. equipment in'the building, and equipment characteristics.
As recommended by Generic Letter 88-20, Supplement 4, "Ind O -i dual Plant Examination External Events (IPEEE) for Severe Accider.t vulnerabilities", final implementation vill be carefully integrated with outage schedules and the seismic portion of the IPEEE.
Considering the verkload set forth by the criteria of the GlP, a Selsmic Evaluation Report summarizing the results of the A 46 progtam at Davis Besse Nuclear Power Station vill be submitted to the NRC by September 1, 1995.
However, the A-46 program completion schedule may be'affected by coordination with the seismic port. ion of the IPPEE, the scope and schedule for completing the necessary SOUG training, and by the availability of industry resources which may be unavailable because of the large number of licensees implementing this program.
If the scht-ule committed to above cannot be-met, Toledo Edison vill.
notify the staff.
If you have any questions regarding the Toledo Edison's -implen2cntation of the SOUG program, please contact Mr. R. V. Schrauder, Manager -
Nuclear sicensing at (419) 249-2366.
Ver d1 yours, j
JGH/ KAP /dic /^v % D n
I Enclosure cci A. B. Davis, Regional Aaministrator - NRC Region II]
. J. B. Hopkins, NRC Senior Project Manager V.
Levis, Senior Resident Inspector - Davis-Besse NRC 4
Utility Radiological Safety Board 1
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- Docket-Number 50-346
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Serin 1 Humber 2090 Enclosure fage 1 RESPONSE TO SUl>PLEMEllT NO. 1 TO GENERIC LETTER 87-02 FOR DAVIS-BESSE NuciEAR POVER STATION UNIT NUMBER 1 9
This latter 13 submitted in conformance with Section 102n of the Atorric Energy Act of 1934 as auen tred, and 10CFR$0.54(f).
Enclosed is l
Toledo Etlison's response to Supplement No, 1 to Generic Letter 87-02, Verification of Seismic Adequacy of Mechanical and Electric Equipreent in Operat r Reactors, Untesolved Safety 1ssue (USI) A-46,
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For:
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D. C. SheIten Vice President
~ telear Sworn and subscribed before me this 17th day of September, 1992.
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