ML20204E015
| ML20204E015 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 03/16/1999 |
| From: | Brockman K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cottle W HOUSTON LIGHTING & POWER CO. |
| Shared Package | |
| ML20204E018 | List: |
| References | |
| 50-498-99-02, 50-498-99-2, 50-499-99-02, 50-499-99-2, NUDOCS 9903240325 | |
| Download: ML20204E015 (5) | |
See also: IR 05000498/1999002
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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, SulTE 400
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ARLINGTON, TEXAS 76011-8064
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MAR 161999
William T. Cottle, President and
Chief Executive Officer
STP Nuclear Operating Company
P.O. Box 289
Wadsworth, Texas 77483
SUBJECT: NRC INSPECTION REPORT NO. 50-498/99-02; 50-499/99-02
Dear Mr. Cottle:
This refers to the inspection conducted on January 10 through February 20,1999, at the South
Texas Project Electric Generating Station, Units 1 and 2, facility. The enclosed report presents
the results of this inspection.
We are concerned about the operator errors recently noted at your facility. During this
inspection period, troubleshooting / corrective maintenance activities being performed by
operators caused a plant trip and an uncontrolled reactivity increase. In both cases, existing
barriers were insufficient to preclude occurrence of these events. The plant trip involved
excersive reliance upon the skill of an individual rather than on an appropriately thought out
plan that was properly reviewed and supported by adequate procedural guidance. As was
noted in your problematic response to the June 1998 switchboard fire, electrical theory
knowledge deficiencies also contributed. The reactivity excursion associated with the moisture
separator work also demonstrated poor planning, an inadequate use of available indications,
and operator knowledge deficiencies.
In both cases, South Texas Project conducted an intrusive review of the circumstances leading
to the event and identified corrective actions which should help preclude similar recurrences.
However, it should be noted that knowledge deficiencies in the application of electrical theory
were recognized as a contributable factor to the September 1998 plant trip, and this deficiency
has not been adequately ddressed.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and its
enclosure will be placed in the NRC Public Document Room (PDR).
Should you have any questions concerning this inspection, we will be pleased to discuss them
with you.
Sincerely,
b
/W'
en E. B
m , Director
/ Division of Reactor Projects
9903240325 990316
ADOCK 05000498
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STP Nuclear Operating Company
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Docket Nos.: 50-498
50-499
License Nos.: NPF-76
NPF-80
Enclosure:
NRC Inspection Report No.
50-498/99-02;50-499/99-02
cc w/ enclosure:
T. H. Cloninger, Vice President
Engineering & Technical Services
STP Nuclear Operating Company -
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P.O. Box 289
Wadsworth, Texas 77483
A. Ramirez/C. M. Canady
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City of Austin
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Electric Utility Department
721 Barton Springs Road
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Mr. M. T. Hardt/Mr. W. C. Gunst
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City Public Service Board
P.O. Box 1771
- San Antonio, Texas 78296
D. G. Tees /R. L. Balcom
Houston Lighting & Power Company
P.O. Box 1700
Houston, Texas 77251
Jon C. Wood
Matthews & Branscomb
One Alamo Center
106 S. St. Mary's Street, Suite 700
San Antonio, Texas 78205-3692
Jack R. Newman, Esq.
1800 M. Street, N.W.
Washington, D.C. 20036-5869
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STP Nuclear Operating Company
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Docket Nos.: 50-498
50-499
License Nos.: NPF-76
NPF-80
Enclosure:
NRC inspection Report No.
50-498/99-02;50-499/99-02
cc w/ enclosure:
T. H. Cloninger, Vice President
Engineering & Technical Services
STP Nuclear Operating Company
P.O. Box 289
Wadsworth, Texas .77483
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A. Ramirez/C. M. Canady
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City of Austin
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Electric Utility Department
721 Barton Springs Road
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Mr. M. T. Hardt/Mr. W. C. Gunst
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City Public Service Board
P.O. Box 1771-
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San Antonio, Texas 78296
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D. G. Tees /R. L. Balcom
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Houston Lighting & Power Company
P.O. Box 1700
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Houston, Texas 77251
Jon C. Wood
Matthews & Branscomb
One Alamo Center
106 S. St. Mary's Street, Suite 700
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San Antonio, Texas 78205-3692
Jack R. Newman, Esq.
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1800 M. Street, N.W.
Washington, D.C. 20036-5869
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STP Nuclear Operating Company
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Mr. G. E. Vaughn/Mr. C. A. Johnson
Central Power & Light Company.
P.O. Box 289 '
MailCode: N5012
Wadsworth, Texas 77483
Records Center
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700 Galleria Parkway
Atlanta, Georgia 30339-5957.
Bureau of Radiation Control
State of Texas
' 1100 West 49th Street
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- Mr. Jim Calloway
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Texas Public Utility Commission
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William B. Travis Building
1701 North Congress Avenue
. P.O. Box 13326
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John Howard, Director
Environmental and Natural Resources Policy
Office of the Governor
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P.O. Box 12428
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' Judge, Matagorda County
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Matagorda County Courthouse
1700 Seventh Street
Bay City, Texas 77414
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STP Nuclear Operating Company
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E-Mail report to D. Lange (DJL)
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E-Mail report to Document Control Desk (DOCDESK)
E-Mail report to Richard Correia (RPC)
E-Mail report to Frank Talbot (FXT)
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STP Nuclear Operating Company
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E-Mail report to T. Frye (TJF)
E-Mail report to D. Lange (DJL)
E-Mail report to NRR Event Tracking System (IPAS)
E-Mail report to Document Control Desk (DOCDESK)
E-Mail report to Richard Correia (RPC)
E-Mail report to Frank Talbot (FXT)
bec to DCD (IE01)
bec distrib. by RIV:
Regional Administrator
Resident inspector
DRP Directcr
DRS-PSB
DRS Director
MIS System
Branch Chief (DRP/A)
RIV File
Project Engineer (DRP/A)
R. Bachmann, OGC (MS: 15-B-18)
Branch Chief (DRP/TSS)
DOCUMENT NAME: R:\\_STP\\ST902RP.NFO
To receive copy of document, Indicate in box: "c" = Copy without enclosures *E" = Copy with enclosurcs "N" = No copy
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