ML20005G578
| ML20005G578 | |
| 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 | |
| ML20005G579 | List: |
| References | |
| NUDOCS 9001190354 | |
| Download: ML20005G578 (4) | |
See also: IR 05000361/1989200
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UNITED STATES
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NUCLEAR RESULATORY COMMISSION
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January 12, 1990
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Docket Nos. 50-361
and 50-362'
Mr. Harold B. Ray, Vice President
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. Nuclear Engineering, Safety, and Licensing Department
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Southern California Edison Company
23 Parker Street
Irvine, California _92718
Dear Mr. Ray:
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SUBJECT: NRC INSPECTION OF SAN ONOFRE NUCLEAR GENERATING STATION
UNITS 2 AND 3, REPORT NO. 50-361 AND 362/89-200
,
This refers to the Safety Systems Functional Inspection (SSFI) conducted by the
NRC Office of Nuclear Reactor 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.
The purpose of the inspection was to determine whether the electrical distribu-
. tion system as designed, installed, and configured at San Onofre Units 2 and 3
would be capable of performing its intended safety functions. During the
inspection, the-team conducted technical reviews of the calculations and
supporting documents for this system at your Nuclear Engineering offices in
Irvine, California.
In addition, it conducted system walkdowns and reviews of
activities associated with this system at the San Onofre site.
.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.
The first area of weakness concerned setpoints that had been improperly
delineated and were not consistent with the design basis for the respective
systems. The second area of weakness concerned inadequate calibration and
surveillance procedures. Three of the team's findings were related to
. procedures and documents that were inadequate in ensuring that the selected
setpoints are properly translated into appropriate equipment settings.
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
piston measurements, and the numerous hardware deficiencies identified during
-the team's walkdown 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
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The fourth area of weakness concerned the lack cf 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.
7
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
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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
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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.
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Sincerely,
Gary M. Holahan, Acting Director
Division of Reactor Projects III/IV/V
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and Special Projects
Office of Nuclear Reactor Regulation
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Enclosure:
NRC Inspection Report
50-361 and 362/89-200
cc w/ enclosure: See page 3
Distribution: See page 4
- See previous concurre1ce
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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
James A. Beoletto, Esq.
Bechtel Power Corporation
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' Southern California Edison Company
P.O. Box 60860
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'
Irvine Operations Center
Terminal Annex
- 23 Parker Street
Los Angeles, California 90060
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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
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San Francisco,.Californic 94111
San Diego, California 92112
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Alan R. Watts, Esq.
Mr. John Hickman
,
Rourke & Woodruff
Senior Health Physicist
701 S. Parker St. No. 7000
Environmental Radioactive Mgmt. Unit
,
Orange, California 92668-4702
Environmental Management Branch
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State Department of Health Services
,
Mr. Sherwin Harris
714 P Street, Room 616
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Resource Project Manager
Sacramento, California 95814
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Public Utilities Depertment
City of Riverside
Resident inspector, San Onofre NPS
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3900 Main Street
c/o U.S. Nuclear Regulatory Comission
Riverside, California 92522
Post Office Box 4329
San Clemente, California 92672
Mr. Charles B. Brinkman
Combustion Engineering, Inc.
Mayor. City of San Clemente
12300 Twinbrook Parkway, Suite 330
San Clemente, California 92672
Rockville, Maryland 20852
,
Mr. Phil Johnson
U.S. Nuclear Regulatory Comission
U.S. Nuclear Regulatory 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
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
Sacramento, California 95814
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