ML13316A075
| ML13316A075 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/30/1991 |
| From: | Zimmerman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| Shared Package | |
| ML13316A076 | List: |
| References | |
| EA-91-051, EA-91-51, NUDOCS 9106180175 | |
| Download: ML13316A075 (3) | |
See also: IR 05000206/1991017
Text
p; REGy &t4UNITED
STATES
IV
NUCLEAR REGULATORY COMMISSION
REGION V
1450 MARIA LANE, SUITE 210
WALNUT CREEK, CALIFORNIA 94596
MAY 3 0 1991
Docket No. 50-206
License No. DPR-13
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 Enforcement Conference held between Southern California
Edison Company and Region V management at the Region V office on May 3, 1991.
The matters discussed during this conference are described in the enclosed
meeting report. A copy of the conference agenda is also attached.
The purpose of this meeting was to discuss the significance of the misalign
ment of a Unit 1 containment spray flow limiter valve, S1-CRS-CV-518, which
occurred during the cycle refueling X outage. This misalignment was not
discovered until 22 months later, during the Cycle XI refueling outage. This
occurrence was the subject of Special NRC Inspection Report No. 50-206/91-11,
dated April 25, 1991.
Based on the results of our special inspection, as discussed during the
enforcement conference, it appears that one of your activities was not
conducted in full compliance with NRC requirements, as specified in the
enclosed Notice of Violation. Although we consider this violation to have
been a serious lapse in the proper control of safety systems, we view it as
another example of a larger issue for which enforcement action has already
been taken. That issue involved insufficient attention by your staff to the
thorough resolution of safety problems, as addressed by our January 4, 1991
Notice of Violation and Proposed Imposition of Civil Penalties for Unit 2.
In the Unit I case, a questioning attitude was not demonstrated in February
1989 when the redundant valve, CV-517, was found to be in an abnormal confi
guration. If a more inquiring assessment had been conducted at that time,
the misalignment of CV-518 would likely have been detected or prevented.
During this conference you stated that additional analysis had shown that
with valve CV-518 misaligned, sufficient containment spray flow would have
been provided, even if no operator actions were assumed. This conclusion was
subsequently documented in Licensee Event Report (LER)91-001, Revision 3.
You are required to respond to this letter and should follow the instructions
specified in the enclosed Notice when preparing your response. In that you
have submitted a Licensee Event Report (LER 91-001, Revision 3) on this
subject, corrective actions already identified in that document may be
included by reference. After reviewing your response to this Notice and your
discussion in the LER, including your proposed corrective actions, and after
9106160175 910530
ADOCK 05000206
-2
considering the results of future inspections, the NRC will determine whether
further NRC enforcement action is necessary to ensure compliance with NRC
regulatory requirements.
In accordance with 10 CFR 2.790 of the NRC's "Rules of Practice," a copy of
this letter, the enclosures, and your response will be placed in the NRC
Public Document Room.
The response directed by this letter and the accompanying Notice are not
subject to the clearance procedures of the Office of Management and Budget as
required by the Paperwork Reduction Act of 1980, PL 96-511.
Should you have any questions concerning this inspection, we will be pleased
to discuss them with you.
Sincerely,
R. P. Zimmerman, Direct r
Division of Reactor Safety
and Projects
Enclosures:
2. Meeting Report No. 50-206/91-17, with Attachment
3. Conference Agenda
cc w/Enclosures:
H. E. Morgan, Vice President and Site Manager (San Clemente)
R. W. Krieger, Station Manager (San Clemente)
State of California
-3
bcc w/copy of enclosures:
Docket File
Project Inspector
Resident Inspector
G. Cook
B. Faulkenberry
J. Martin
J. Lieberman
A. Johnson
P. Johnson
G. Kalman, NRR
L. Kokajko, NRR
J. Bradfute, NRR
J. Caldwell, OEDO
bcc w/Enclosure 1:
M. Smith
N. Western
J. Zollicoffer
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