PNO-IV-88-013, on 880219,reactor Circulation Pump Motor Tripped on over-current Condition.Caused by Low Megger Readings to Pump Motor.Orderly Plant Shutdown Continued W/ Plans to Go to Cold Shutdown for Necessary Repairs

PNO-IV-88-013:on 880219,reactor Circulation Pump Motor Tripped on over-current Condition.Caused by Low Megger Readings to Pump Motor.Orderly Plant Shutdown Continued W/ Plans to Go to Cold Shutdown for Necessary Repairs

ML20149L659
Person / Time
Site:	River Bend
Issue date:	02/19/1988
From:	Holler E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
References
PNO-IV-88-013, PNO-IV-88-13, NUDOCS 8802240352
Download: ML20149L659 (1)

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. . February 19, 1988 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PN0-IV-88-13 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received wit!9ut verification or evaluation, and is basically all that is known by the Regfon ?V staff on this date.

FACILITY: Licensee Emergency Classification:

Gulf States Utilities Notification of Unusual Event River Bend Station Alert '

St. Francisville, Louisiana Site Area Emergency DN: 60-458 General Emergency

_x_ Not Applicable SU1 JECT: SHUTDOWN IN EXCESS OF 48 h0VRS On February 19, 1988, at 10:01 a.m. (CST), with River Bend Station at 100 percent power, the 'A' reactor recirculation pump motor tripped on an over-current condition. Reactor power was lowered to less than 50 percent and the plant was stabilized while the cause of the pump motor crip was investigated. The investigation revealed low megger readings to the pump motor.

An orderly plant shutdown was continued at 11:45 a.m. with plans to go to cold shutdown for necessary repairs. The plant outage is expected to last at least seven days. The Senior Resident Inspector is following the licensee's actions.

There have been no news media inquiries regarding this matter.

Neither the licensee nor the NRC plans to issue a press release.

The state of Louisiana will be informed.

Region IV received notification of this occurrence by telephone from the Senior Residerit Inspector at 1:40 p.m. on February 19, 1988. Region IV has informed NRR.

This information has been confirmed with a licensee representative.

CONTACT: E. Holler, FTS 728-8287 i DISTRIBUTION:

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