ML20236G910
| ML20236G910 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 07/02/1998 |
| From: | Gwynn T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Terry C TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| Shared Package | |
| ML20236G912 | List: |
| References | |
| 50-445-98-03, 50-445-98-3, 50-446-98-03, 50-446-98-3, EA-98-229, NUDOCS 9807070017 | |
| Download: ML20236G910 (5) | |
See also: IR 05000445/1998003
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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REGION IV
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611 RYAN PLAZA DRIVE, SUITE 400
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July 2, 1998
EA 98-229
Mr. C. L. Terry
TU Electric
Senior Vice President and Principal Nuclear Officer
ATTN: Regulatory Affairs Department
P.O. Box 1002
Glen Rose, Texas 76043
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SUBJECT: NRC INSPECTION REPORT 50-445/98-03,50-446/98-03 AND NOTICE OF
VIOLATION
Dear Mr. Terry:
From March 29 through May 9,1998, an inspection was conducted at your Comanche' Peak
Steam Electric Station, Units 1 and 2 reactor facilities. The enclosed report presents the scope
and results of that inspection.
During the 6-week period covered by this inspection period, activities at the Comarche Peak
facility were generally characterized by safety-conscious operations. However, five violations
are documented in the enclosed inspection report. The first violation is related to design control
. problems associated with the emergency core cooling system transfer to cold leg recirculation.
The problems are related to inconsistencies between the plant licensing bases, the design
bases, and the emergency operating procedure. The second violation represents a failure of
your 10 CFR 59.59 Safety Evaluation process to identify unreviewed safety questions
associated with changes to the emergen::y operating procedure for transfer to cold leg
recirculation. The third and fourth violations relate to problems experienced during reduced
inventory operations. The fifth violation involved a failure to take adequate corrective actions to
address tomado venting by the fire doors for the uninterruptible power supply rooms.
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These violations are cited in the enclosed Notice of Violation (Notice) and the circumstances
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surrounding the violations are described, in detail, in the enclosed report. Please note that you
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are required to respond to this letter and should follow the instructions specified in the enclosed
Notice when preparing your response. The NRC will use your response, in part, to determine
- whether further enforcement action is necessary to ensure compliance with regulatory
requirements. During the exit meeting on May 14, your regulatory affairs manager indicated that
he believed that the potential violations conceming the midloop level indicators met the criteria
for enforcement discretion, and that he did not believe that you had violated 10 CFR 50.59 USQ
criteria. We considered his comments during our review of these issues.
A partial loss of reactor coolant system level indication during midloop operations occurred
during this inspection period. This resulted from the installation and use of temporary pressure
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9907070017 990702
ADOCK 05000445
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TU Electric
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gauges for troubleshooting reactor vessel level indication problems and because of limited
engineering involvement. Since reduced inventory operations require special attention and a
higher level of awareness, the NRC is particularly concemed with the circumstances
surrounding this event. As a result, we have scheduled a management meeting with you to be
conducted at your facility July 20,1998. Please be prepared to discuss your findings and
proposed corrective actions during this meeting.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its
enclosure (s), and your response will be placed in the NRC Public Document Room (PDR).
Should you have any questions conceming this inspection, we will be pleased to discuss them
with you
Si
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,
omas P. Gwyn Dire
.or
Division of Reactor
ject
Docket Nos.: 50-445
50446
License Nos.: NPF-87
NPF-89
Enclosures:
2. NRC Inspection Report
50-445/98-03, 50-446/98-03
cc w/ enclosures:
Mr. Roger D. Walker
TU Electric
Regulatory Affairs Manager
P O. Box 1002
Glen Rose, Texas 76043
Juanita Ellis
President - CASE
1426 South Polk Street
Dallas, Texas 75224
TU Electric
Bethesda Ucensing
3 Metro Center, Guite 610
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Bethe sda, Maryland 20814
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TU Electric
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George L. Edgar, Esq.
1800 M. Street, NW
Washington, D.C. 20036
G. R. Bynog, Program Manager /
Chief Inspector
. Texas Department of Licensing & Regulation
Boiler Division
P.O. Box 12157, Capitol Station
Honorable Dale McPherson
County Judge
P.O. Box 851
Glen Rose, Texas 76043
Texas Radiation Control Program Director
1100 West 49th Street
John Howard, Director
Environmental and Natural Resources Policy
Office of the Governor
P.O. Box 12428
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