ML13316A347
| ML13316A347 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/16/1999 |
| From: | Jocelyn Craig Office of Nuclear Regulatory Research |
| To: | Nunn D Southern California Edison Co |
| References | |
| REF-GTECI-*****, REF-GTECI-MI, REF-GTECI-NI, REF-GTECI-SC, TASK-********, TASK-OR NUDOCS 9907130062 | |
| Download: ML13316A347 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 June 16, 1999 Mr. Dwight E. Nunn, Vice President Engineering & Technical Services Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, California 92674-0128
SUBJECT:
USE OF SAN ONO k6iXA f A
RATING STATION AS A GENERIC SAFETY ISSUE 191 REFERENCE PLANT
'99 JUN 18 A10 :10
Dear Mr. Nunn:
Currently, the NRC is in the process of re-evaluating the effect of debris accumulation on sump performance. The re-evaluation has been designated GSI-1 91, "Assessment of Debris Accumulation on PWR Sump Performance." In order to help ensure the successful resolution of GSI-1 91, the NRC has decided to utilize a number of reference plants to develop a containment and ECCS sump design information base representative of operating PWRs which would be used in our generic studies to achieve this goal. We would like to include San Onofre Nuclear Generating Station as one of the several reference plants in the GSI-1 91 study.
Reference plants will be requested to:
(1) Accommodate one plant visit to tour containment (if possible), tour sump area (if possible),
and review plant drawings.
(2) Accommodate one or two meetings (at site or via telephone conference) between plant personnel responsible for containment, sump, and accident analysis with NRC staff from the Office of Nuclear Regulatory Research.
(3) Provide copies of plant evaluation, P&ID, and detail drawings.
It should be noted that the plant visit is not an inspection nor audit. It can best be characterized as
.a meeting to facilitate the gathering of information and plant specific insights to ensure that our studies are realistic. The information collected will be used in the GSI-1 91 study being conducted by the Office of Nuclear Regulatory Research. The names of reference plants will not be used in publications or presentations. Also, reference plants will be given an opportunity to review documents prior to publications to ensure that their plant is correctly represented.
In March 1999, Mr. Aleck Serkiz of my staff, visited your plant to gain insights into the condition of Class I coatings in the SONGS Unit 3 containment and to make arrangement to obtain coating samples for shipment to Westinghouse Savannah River Technical Center. During a tour of the containment, a number of digital photographs were taken by Mr. Jon Cavallo, Corrosion Control Consultants and Labs, Inc., of the coatings and area around the emergency sump. We would
}
appreciate receiving a copy of those photographs in digital format. Mr. Serkiz also held discussions with plant staff regarding plant elevation drawings, containment layout drawings, and sump design/fabrication drawings. Mr. Michael McBrearty of your staff has copies of the drawings that were discussed. We would appreciate your sending those copies to: Dr. D.V.
Rao, Los Alamos National Laboratory, P.O. Box 1663, MS K557, Los Alamos, NM 87544.
9907130062 990616 PDR ADOCK 05000206 P
Dwight If you need more information regarding the role of reference plants in the GSI-1 91 study or the GSl-191 study, please contact Mr. Michael Marshall (301-415-5895) or Mr. Aleck Serkiz (301-415-6563).
Sincerely, briginal signed by John W. Craig John W. Craig, Director Division of Engineering Technology Office of Nuclear Regulatory Research Distribution:
L. Raghavan, NRR, SONGS PM A. Serkiz, RES R. Elliot, NRR D. Skay, NRR PDR ERAB r/f SONGS r/f 6E PREVIOUS UPJRREE PAGE DOCUMENT NAME: g:\\erab\\dwightnun To receive a copy of this document, indicate in the box: "C" = Copy without attachment/enclosure "E" = Copy with attachment/enclosure "N" = No copy OFFICE ERAB/RES L
hERAB/RES ERAB/RES D/DET D/RES,4f NAME MMarshall*
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AThad ni DATE 5/
/99 5/
/99 5/
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/99 6/ / /99 OFFICIAL RECORD COPY
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Mr. R. W. Krieger, Vice President Mr. Harold B. Ray, Executive Vice President Southern California Edison Company Southern California Edison Company San Onofre Nuclear Generating Station San Onofre Nuclear Generating Station P. 0. Box 128 P.O. Box 128 San Clemente, California 92674-0128 San Clemente, California 92674-0128 Chairman, Board of Supervisors Mr. John Fee, Maintenance Manager County of San Diego Southern California Edison Company 1600 Pacific Highway, Room 335 San Onofre Nuclear Generating Station San Diego, California 92101 P.O. Box 128 San Clemente, California 92674-01 28 Alan R. Watts, Esq.
Woodruff, Spradlin & Smart Mr. M. McBrearty 701 S. Parker St. No. 7000 Southern California Edison Company Orange, California 92668-4702 San Onofre Nuclear Generating Station P.O. Box 128 Mr. Sherwin Harris San Clemente, California 92674-0128 Resource Project Manager Public Utilities Department Mr. R. LaBeaf City of Riverside Southern California Edison Company 3900 Main Street San Onofre Nuclear Generating Station Riverside, California 92522 P.O. Box 128 San Clemente, California 92674-01 28 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Mr. Michael Olson San Onofre Liaison San Diego Gas & Electric Company P.O. Box 1831 San Diego, California 92112-4150 Mr. Steve Hsu Radiologic Health Branch State Department of Health Services Post OffPice Box 942732 Sacramento, CCalifornia 94234 Resident Inspector/San Onofre NPS Sao U.S. Nuclear Regulatory Commission Post OffPice Box 4329 San Clemente, California 92674 Mayor City of San Clemente 100 Avenida Presidio San Clemente, California 92672 Arligto, Teas 6011806 Mr. MchaelOlso