ML13312A725
| ML13312A725 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/04/1993 |
| From: | Vandenburgh C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| Shared Package | |
| ML13312A726 | List: |
| References | |
| NUDOCS 9312030076 | |
| Download: ML13312A725 (3) | |
See also: IR 05000206/1993029
Text
UNITED STATES
-A
NUCLEAR REGULATORY COMMISSION
REGIONV
1450 MARIA LANE
WALNUT CREEK. CAUFORNIA 94596-5368
NOV 04
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, Power Systems
SUBJECT:
NRC INSPECTION REPORT NOS. 50-206, 361, 362/93-29
This refers to the routine inspection conducted by J. f.
Russell,
D. L. Solorio, F. R. Huey, and T. R. Meadows of this office, and C. M. Regan,
of the Office of Nuclear Reactor Regulation, on September 2 through October 6,
1993, of activities authorized by NRC License Nos. DPR-13 NPF-1 and NPF-15
and to the discussion of our findings held by the inspectors with
Mr. R. W. rieger and other members of the Southern California Edison Company
staff at the conclusion of the inspection.
Areas examined during this inspection are described in the enclosed inspection
report. Within these areas, the inspection consisted of selective
examinations of procedures and representative records, interviews with
personnel, and observations by the inspectors.
No violations of NRC requirements were identified within the scope of this
inspection. However, the NRC is concerned with the apparent failure to
perform an adequate safety evaluation prior to conmencing pre-outage work in
the Unit 3 safety equiInment building. The safety analysis appeared inadequate
because it failed to consider the effects of design basis flooding accidents.
We considered that an unqerlying reason for this apparent violation appears to
be an inadequate program to control watertight doors and plugs in the context
of their role to prevent flooding, and the ensuing lack of procedural
guidance. This issue is unresolved pending your submission of an evaluation
of the safety consequences of this condition. We will review your evaluation
and deterfine whether additional NRC actions are warranted. We are continuing
to evaluate the large amount of construction activities which were evident in
the emergency core cooling system rooms while Unit 3 was in power operations.
During this inspection we reviewed your Nuclear Safety Concerns Program and
interviewed various plant personnel regarding the Nuclear Safety Concerns
Program. Two issues of note were observed as a result of the interviews. We
noted that some contractor employees were not aware of the Nuclear Safety
Concerns Program and some were worried about possible discrimination if they
went to the Nuclear Safety Concerns Program. In addition , some maintenance
personnel lacked confidence in going first to their supervisor with a concern
and some also lacked confidence in the Nuclear Safety Concerns Program. We
9312030076 931104
PDR ADOCK 05000206
0
2
request that you inform us what, if any, actions you plan to take address this
issue.
We also noted several loose parts and vibration monitor alarms occurred
associated with the Unit 3 steam generators during this inspection period. We
understand that you consider these alarms to be due to noises external to the
steam generators and not-due to a loose part. We will review the results of
steam generator base plate inspections that you will be performing during the
upcoming Unit 3 cycle VII outage.
Finally, we observed the actions of the Unit 2 control room staff during a
dropped control element assembly event. We considered their actions in
mitigating the ensuing reactor power and reactor coolant system temperature
perturbations a-strength.
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 any questions concerning this inspection, we will be pleased
to discuss them with you.
Sincerely,
C. A. VanDenburgh, Chief
Reactor Projects Branch
Enclosure:
Inspeetion Report Nos. 50-206/93-29
50-361/93-29
and 50-362/93-29
cc w/enclo-sure:
Mr. Edwin A. Guiles, Vice President Engineering & Operations, San Diego Gas
and Electric Co.
T. E. Oubre, Esq., Southern California Edison Company
Chairman, Board of Supervisors, County of San Diego
Mr. Sherwin Harris, Resource Project Manager, Public Utilities Department
Mr. Charles B. Brinkman, Manager, ABB Combustion Engineering Nuclear Power
Mr. R. W. Krieger, Vice President, Nuclear Generating Station, Southern
California Edison Company
Mr. Don J. Womeldorf, Chief, Environmental Management Branch
Mr. Thomas E. Bostrom, Project Manager, Bechtel Power Corporation
Mr. Robert G. Lacy, San Diego Gas and Electric
Mr. Steve Hsu, Radiologic Health Branch
Mayor, City of San Clemente
0II
3
Docket File
G. Cook
S. Richards
B. Faulkenberry
J. Sloan
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