ML20058C001
| ML20058C001 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/18/1993 |
| From: | Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-93400, NUDOCS 9312020310 | |
| Download: ML20058C001 (2) | |
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Log # TXX-93400 7
File # 10013 1
10125 C
C Ref. # 10CFR50.72(a)(i)
TUELECTRIC November 18, 1993 William J. Cahill,Jr.
G1 mop Vice Presulent U. S. Nuclear Regulatory Commission Attn:
Document Control Room Washington, DC 20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 TRANSMITTAL OF REPORT FOLLOWING A NOTIFICATION OF UNUSUAL EVENT Gentlemen:
As specified in the CPSES Emergency Plan, TV Electric hereby transmits the enclosed report which summarizes the event which occurred on November 17, 1993.
Sincerely.
William J. Cahill. Jr.
By:
D. R. Woodlan Docket Licensing Mancger CLW/grp Enclosure c-Mr. J. L. Milhoan, Region IV Resident Inspectors, CPSES (2)
Mr. Robert Lansford, Division of Emergency Management Mr. T. A.
Bergman, NRR 9312020310 931118 PDR ADOCK 05000445 i
S PDR 400 N. Olive Street 1 B.El Dallas. Texas 75201
l t
Enclosure to TXX-93400 I
Page 1 of 1 TV ELECTRIC COMANCHE PEAK STEAM ELECTRIC STATION, UNITS 1 AND 2 DOCKET N05, 50-445 AND 50-446 l
Notification of Unusual Event
)
As a Result of Loss of All Meteorological System Instruments i
)
Reportina Reouirement' This report is being submitted as recommended by NUREG-0654, " Criteria for l
l Preparation and Evaluation of Radiological Emergency Response Plans and l
Preparedness in Support of Nuclear Power Plants
- and in accordance with Comanche Peak Steam Electric Station (CPSES) Emergency Plan Procedures.
The l
CPSES Emergency Plan procedures require that a written summary be submitted l
within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the closecut of the Notification of Unusual Event (N00E).
l Event Description j
On November 17, 1993, at approximately 7:35 a.m. (CST), with Unit 1 in f
l MODE 6 and Unit 2 in MODE 1, a Notification of Unusual Event was declared due to loss of all primary and backup meteorological system instruments.
A lighting strike had' damaged the back-up tower instruments and some primary tower instruments the previous day. The time of total loss of primary tower l
functionality is under investigation.
The Nuclear Regulatory Commission and appropriate offsite agencies were notified in accordance with the applicable regulatory and procedural i
requirements.
l On November 17, 1993, at approximately 10:50 a.m. (CST), the Notice of
)
l Unusual Event was terminated after personnel returned the primary tower to 1
l an operational status.
]
j Corrective Action I
l Immediate corrective actions were taken to contact the local National Weather Service for substitute meteorological data until the primary tower
(
was returned to service by corrective actions of plant personnel.
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