ML13304A382
| ML13304A382 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 12/02/1988 |
| From: | Hickman D Office of Nuclear Reactor Regulation |
| To: | Baskin K SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| TAC-68329, TAC-68330, NUDOCS 8812070071 | |
| Download: ML13304A382 (3) | |
Text
December 2, 1988 Docket Nos.:
50-361 and 50-362 Mr. Kenneth P. Baskin Mr. Gary D. Cotton Vice President Senior Vice President Southern California Edison Company Engineering and Operations 2244 Walnut Grove Avenue San Diego Gas and Electric Company Post Office Box 800 101 Ash Street Rosemead, California 91770 Post Office Box 1831 San Diego, California 92112 Gentlemen:
SUBJECT:
WKM MSIV ROOT CAUSE ANALYSIS AND INSPECTION REPORT (TAC NOS. 68329 AND 68330)
We have reviewed your "Root Cause Analysis for the Guide Rail/Lev-R-Lock Interaction Problem for MSIVs" dated June 19, 1988, your "Inspection Results of SONGS - 3 MSIV -
8205" dated July 7, 1988, and your revised "Inspection Results of SONGS - 3 MSIV - 8205" dated August 24, 1988. As we stated in our Request for Additional Information dated August 18, 1988, we do not find the continued operation of San Onofre Units 2 and 3 to constitute a significant safety hazard, however, the incorrect conclusions drawn from your boroscopic examination cast doubt upon the adequacy of your proposed long term actions.
Therefore, we took particular note of your boroscopic inspection improvements described on pages 16 and 17 of your revised inspection report and the flow orifice installation described on pages 17 and 18 of the same report. While these actions should enhance the operation and examination of the MSIVs, we are not yet convinced that they are sufficient to preclude disassembly of MSIVs for inspection. To provide additional confidence that a boroscopic examination alone is sufficient, we request that you notify us of the date of the next boroscopic examination as soon as it becomes available so that we may observe the operation. In the meantime, we withhold comment on the acceptability of your recommended inspection plan.
Sincerely, original signed by Donald E. Hickman, Project Manager Project Directorate V Division of Reactor Projects -
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 December 2, 1988 Docket Nos.: 50-361 and 50-362 Mr. Kenneth P. Baskin Mr. Gary D. Cotton Vice President Senior Vice President Southern California Edison Company Engineering and Operations 2244 Walnut Grove Avenue San Diego Gas and Electric Company Post Office Box 800 101 Ash Street Rosemead, California 91770 Post Office Box 1831 San Diego, California 92112 Gentlemen:
SUBJECT:
WKM MSIV ROOT CAUSE ANALYSIS AND INSPECTION REPORT (TAC NOS. 68329 AND 68330)
We have reviewed your "Root Cause Analysis for the Guide Rail/Lev-R-Lock Interaction Problem for MSIVs" dated June 19, 1988, your "Inspection Results of SONGS - 3 MSIV - 8205" dated July 7, 1988, and your revised "Inspection Results of SONGS - 3 MSIV - 8205" dated August 24, 1988. As we stated in our Request for Additional Information dated August 18, 1988, we do not find the continued operation of San Onofre Units 2 and 3 to constitute a significant safety hazard, however, the incorrect conclusions drawn from your boroscopic examination cast doubt upon the adequacy of your proposed long term actions.
Therefore, we took particular note of your boroscopic inspection improvements described on pages 16 and 17 of your revised inspection report and the flow orifice installation described on pages 17 and 18 of the same report. While these actions should enhance the operation and examination of the MSIVs, we are not yet convinced that they are sufficient to preclude disassembly of MSIVs for inspection. To provide additional confidence that a boroscopic examination alone is sufficient, we request that you notify us of the date of the next boroscopic examination as soon as it becomes available so that we may observe the operation. In the meantime, we withhold comment on the acceptability of your recommended inspection plan.
Sincerely, Donald E. Hickman, Project Manager Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects cc:
See next page
Mr. Kenneth P. Baskin San Onofre Nuclear Generating Southern California Edison Company Station, Units 2 and 3 cc:
Mr. Gary D. Cotton Mr. Hans Kaspar, Executive Director Senior Vice President Marine Review Committee, Inc.
Engineering and Operations 531 Encinitas Boulevard, Suite 105 San Diego Gas & Electric Company Encinitas, California 92024 101 Ash Street Post Office Box 1831 San Diego, California 92112 Mr. Mark Medford Southern California Edison Company Charles R. Kocher, Esq.
2244 Walnut Grove Avenue James A. Beoletto, Esq.
P. 0. Box 800 Southern California Edison Company Rosemead, California 91770 2244 Walnut Grove Avenue P. 0. Box 800 Mr. Robert G. Lacy Rosemead, California 91770 Manager, Nuclear Department San Diego Gas & Electric Company Orrick, Herrington & Sutcliffe P. 0. Box 1831 ATTN:
David R. Pigott, Esq.
San Diego, California 92112 600 Montgomery Street San Francisco, California 94111 Richard J. Wharton, Esq.
University of San Diego School of Alan R. Watts, Esq.
Law Rourke & Woodruff Environmental Law Clinic 701 S. Parker St. No. 7000 San Diego, California 92110 Orange, California 92668-4702 Charles E. McClung, Jr., Esq.
Attorney at Law Mr. S. McClusky 24012 Calle de la Plaza/Suite 330 Bechtel Power Corporation Laguna Hills, California 92653 P. 0. Box 60860, Terminal Annex Los Angeles, California 90060 Regional Administrator, Region V U.S. Nuclear Regulatory Commission Mr. C. B. Brinkman 1450 Maria Lane/Suite 210 Combustion Engineering, Inc.
Walnut Creek, California 94596 7910 Woodmont Avenue, Suite 1310 Bethesda, Maryland 20814 Resident Inspector, San Onofre NPS c/o U. S. Nuclear Regulatory Commission Mr. Dennis F. Kirsh Post Office Box 4329 U.S. Nuclear Regulatory Commission San Clemente, California 92672 Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Mr. Sherwin Harris Resource Project Manager Public Utilities Department City of Riverside City Hall 3900 Main Street Riverside, California 92522