PNO-IV-98-059, on 981129,licensee Commenced Plant Shutdown from 100% Power to Mode 3 to Replace Fan Motor.Resident Inspector Monitored Portion of Plant Shutdown from Cr.Info Has Been Discussed with Licensee

PNO-IV-98-059:on 981129,licensee Commenced Plant Shutdown from 100% Power to Mode 3 to Replace Fan Motor.Resident Inspector Monitored Portion of Plant Shutdown from Cr.Info Has Been Discussed with Licensee

ML20196B836
Person / Time
Site:	Callaway
Issue date:	11/30/1998
From:	Passehl D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
References
PNO-IV-98-059, PNO-IV-98-59, NUDOCS 9812010197
Download: ML20196B836 (1)

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November 30,1958 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-IV-98-059 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by Region IV staff in Arlington, Texas on this date.

Facility Licensee Emeroency Classification i Union Electric Co. Notification of Unusual Event l Callaway 1 Alert  !

Fulton, Missouri Site Area Emergency '

Dockets: 50-483 General Emergency X Not Applicable

Subject:

PLANT SHUTDOWN TO REPAIR CONTAINMENT COOLER FAN MOTOR  !

On November 27,1998, the breaker for the Containment Cooler A fan motor tripped placing the plant in a Technical Specification Action Statement requiring a plant shutdown if the system could not be retumed to service within 7 days. Subsequent troubleshooting determined that the motor, which was located inside containment, had failed. The licencee determined that replacement of the motor would require use of the containment polar crane.

The plant heavy loads analysis does not support use of the containment polar crane while in Operating Modes 1 or 2. On November 29, at 12:02 a.m. (CST), the licensee commenced a plant shutdown from 100 percent power to Mode 3 to replace the fan motor.

The plant entered Mode 3 at 3:25 p.m on November 29. According to the licensee, replacement of the fan motor was expected to be complete and the plant ready for power ascension by December 2,1998.

The resident inspector monitored a portion of the plant shutdown from the control room.

The state of Missouri has been informed.

Region IV received notification of this occurrence by telephone from the Senior Resident inspector on November 28. Region IV has informed NRR and the EDO's office.

This information has been discussed with the licensee and is current as of 8:00 a.m. on November 30,1998.

Contact:

David GravesDavid Passehl (817)860-8141(573)676-3181

! 9812010197 981130 PDR I&E PNO-IV-98-059 PDR 1 q

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