ML20005H010
| ML20005H010 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/12/1990 |
| From: | Holahan G Office of Nuclear Reactor Regulation |
| To: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| Shared Package | |
| ML20005H011 | List: |
| References | |
| NUDOCS 9001240041 | |
| Download: ML20005H010 (4) | |
See also: IR 05000361/1989200
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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WASHINGTON. D. C. 20555
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January 12, 1990
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Docket Hos. 50-361
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and 50-362.
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Hr. Harold B. Ray, Vice President
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Nuclear Engineering, Safety, and Licensing Department
Southern California Edison Company
23 Parker Street
Irvine, California 92718
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Dear Mr. Ray:
SUBJECT:
NRC INSPECTION OF SAN ONOFRE NUCLEAR GENERATING STATION
UNITS 2 AND 3, REPORT NO. 50-361 AND 362/89-200
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This refers to the Safety Systems Functional Inspection (SSFI) conducted by the
NRC Office of Nuclear Reector Regulation during October 30 through November 8
,
and November 27 through November 30, 1989.
The inspection team consisted of
headquarters and regional personnel as well as three consultants.
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The purpose of the inspection was to determine whether the electrical distribu-
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tion Oystem as designed, installed, and configured at San Onofre Units 2 and 3
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would be capable of performing its intended safety functions. During the
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inspection, the team conducted technical reviews of the calculations and
supporting documents for this system at your Nuclear Engineering offices in
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Irvine, California.
In addition, it conducted system walkdowns and reviews of
activities associated with this system at the San Onofre site.
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As a result of this inspection, the team identified four general areas of
weakness which were discussed during the exit meeting on November 30, 1989.
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The first area of weakness concerned setpoints that had been improperly
delineated and tsare not consistent with the design basis for the respective
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systems. The seccnd area of weakness concerned inadequate calibration and
surveillance procederes. Three of the team's findings were related to
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procedures tnd documents that were inadequate in ensuring that the selected
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setpoints are properly translated into appropriate equipment settings.
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The third area of weakness identified by the inspection team was in the area of
maintenance. Two of the team's findings, the improper evaluation of diesel.
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piston measurements, and the numerous hardware deficiencies identified during
the team's walkdowc inspections of Units 2 and 3, were the apparent result of
inattention to detail and are not indicative of a strong maintenance program.
These findings were further substantiated by your walkdown, performed after the
first half of our inspection, during which numerous documentation and data
entry errors were identified.
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Mr. Harold B. Ray
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January 12, 1990
The f ourth area of weakness concerned the lack of adequate, auditable calcula-
tions as necessary to ensure that the design basis for the current electrical
distribution and associated systems had been met. We believe the lack of
formal calculations has added to the uncertainty regarding the implementation
of the design-basis of certain systems.
The team also identified several design strengths during the inspection. We
found your imediate actions taken as a result of our findings to be both
thorough and prompt,
in addition, your current design-basis reconstitution
effort was seen as a way of resolving some of the deficiencies identified by
the inspection team.
In accordance with 10 CFR 2.790(a), a copy of this letter and the enclosure
will be placed in the NRC Public Document Room. Any specific enforcement
actions resulting from this inspection will be identified by the Region V
staff in separate correspondence.
You are requested to respond to this office within 60 days to inform us of the
action taken related to the deficiencies identified in the enclosed inspection
report and the date that these actions will be completed for follow-up inspec-
tion. Should you have any questions concerning this inspection, please contact
the NRR Project Manager, Lawrence Kokajko, or the inspection team leader,
Jeffrey Jacobson. Messrs. Kokajko and Jacobson can be reached at
(301) 492-1380 and (301) 492-0996, respectively.
Sincerely,
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Gary M. Holahan, Acting Director
Division of Reactor Projects Ill/IV/V
and Special Projects
Office of Nuclear Reactor Regulation
Enclosure:
NRC Inspection Report
50-361 and 362/89-200
cc w/ enclosure:
See page 3
Distribution:
See page 4
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Mr. Harold B. Roy
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January 12, 1990
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cc w/ enclosure:
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Charles R. Kocher, Esq.
Mr. F. B. Marsh, Project Manager
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James A. Beoletto, Esq.
Bechtel Power Corporation
Southern California Edison Company
P.O. Box 60860
Irvine Operations Center
Terminal Annex
23 Parker Street
Los Angeles, California 90060
Irvine, California 92718
Mr. Robert G. Lacy
Orrick, Herrington & Sutcliffe
Manager, Nuclear Department
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ATTN: David R. Pigott, Esq.
San Diego Gas & Electric Company
.
600 Montgomery Street
P. O. Box 1831
San Francisco, California 94111
San Diego, California 92112
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Alan R. Watts, Esq.
Mr. John Hickman
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Rourke & Woodruff
Senior Health Physicist
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701 S. Parker St. No. 7000
Environmental Radioactive Ngmt. Unit
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,
Orange, California 92668-4702
Environmental Management Branch
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State Department of Health Services
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Mr. Sherwin Harris
714 P Street, Room 616
Resource Project Manager
Sacramento, California 95814
Public Utilities Department
City of Riverside
Resident Inspector, San Onofre NPS
3900 Main Street
c/o U.S. Nuclear Regulatory Comission
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Riverside, California 92522
Post Office Box 4329
.
San Clemente, California 92672
Mr. Charles B. Brinkman
Combustion Engineering, Inc.
Mayor, City of San Clemente
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12300 Twinbrook Parkway, Suite 330
San Clemente, California 92672
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Rockville, Maryland 20852
Regional Administrator, Region V
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Mr. Phil Johnson
U.S. Nuclear Regulatory Comission
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U.S. Nuclear Pegulatory Commission
1450 Maria Lane / Suite 210
Region V
Walnut Creek, California 94596
1450 Maria Lane, Suite 210
Walnut Creek, California 94596
Chairman, Board of Supervisors
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San Diego County
Mr. Don Womeldorf
1600 Pacific Highway, Room 335
Chief Environmental Management Branch
San Diego, California 92101
California Department of Health
714 P Street, Room 616
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Sacramento, California 95814
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Mr. Harold B. Ray
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January 12, 1990
,Distrib r, ion:.. ...
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tsectet flies 50-361.andL362.
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TEMurley, NRR
JHSniezek, NRR
BKGrines, NRR
GClainas, NRR
WDLanning, NRR
EVlmbro, NRR
JBJacobson, NRR
RLSpessard, AEOD
GWKnighton, NRR
LEKokajko, NRR
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CWCaldwell, SRI San Onofre
Regional Administrators
Regional Division Directors
Inspection Team
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