ML20029A090
| ML20029A090 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/18/1991 |
| From: | Richards S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| Shared Package | |
| ML20029A091 | List: |
| References | |
| NUDOCS 9102040046 | |
| Download: ML20029A090 (3) | |
See also: IR 05000206/1990040
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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JAN 18 1991
Docket Nos. 50-206, 50-361, 50-362
Southern California Edison Company
Irvine Operations Center
23 Parker Street
Irvine, California 92718
Attention: Mr. Harold B. Ray
Senior Vice President, Nuclear
Gentlemen:
This refers to the routine inspection conducted by Messrs. C. W. Caldwell,
A. L. Hon, C
D. Townsend, and D. Corporandy of this office on November 11
through December 22, 1990 of activities authorized by NRC License Nos.
DPR-13, NPF-10, and NPF-15 and to the discussion of our findings held by the
inspectors with Mr. H. E. Morgan and other members of the Southern California
Edison (SCE) staff at the conclusion of the inspection.
Areas examined during this inspection are described in the enclosed inspec-
tion report. Within these areas, the inspection consisted of selective
examinations of procedures and representative records, interviews with
personnel, and observations by the inspectors.
As discussed in the enclosed inspection report, we are concerned that your
staff did not take adequate corrective measures to preclude failure of the
Automatic Switch Company (ASCO) solenoid operator for containment spray valve
CV-82. This specific model of ASCO solenoid valve has had a history of
failures in Linit I dating back to 1987. As evidenced by the failure of CV-82,
it appears that you did not establish sufficient measures to monitor the
performance of these solenoid valves during ongoing plant operation.
In
particular, the surveillance interval established may have been too long with
respect to failure times indicated by informal testing.
In view of the
corrective actions taken or initiated by your staff since this most recent
failure, and consistent with the criteria specified in Section V.G of the NRC
Enforcement Policy, this issue is identified in the enc 1csed inspection report
as a non-cited violation.
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.
Should you have uly questions concerning this inspection, we will L.e pleased
to discuss them with you.
Sincerely,
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S. A. Richards, Chief
Reactor Projects Branch
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JAN 181991
Enclosure:
Inspection Report Nos. 50-206/90-40
50-361/90-40
and 50-362/90-40
cc w/ Enclosures:
H. E. Morgan, Vice President and Site Manager (San Clemente)
R. Krieger, Station Manager (San Clemente)
State of California
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