ML20073E226

Special Rept 91-02:on 910321,determined That Longitudinal Trace of Triaxial time-history Acceloragraph VR-7863 (Channel 3) Not Functioning Properly.Affected Channel Will Be Repaired at First Outage of Sufficient Duration

ML20073E226
Person / Time
Site:	Hope Creek
Issue date:	04/24/1991
From:	Hagan J Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-02, 91-2, NUDOCS 9104300110
Download: ML20073E226 (1)

Text

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, Put>ht service fiectnc tuid Gas Company P.O Box 236 Hancocks Bndge, New Jert.ey 08038 Hope Creek Operatu>ns April 24, 1991 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Dear Sirt HOPE CREEK GENERATING STATION DOCKET No. 50-354 UNIT NO. 1 SPECIAL REPORT 91-02 This Special Report is submitted pursuant to the requirements . ,

of Hope Creek Technical Specification 3.3.7.2 due to an inoperable seismic monitoring channel that has existed for more than 30 days.

On 3/21/91, during the performance of a semi-annual functional test of station seismic instrumentation, it was determined that the longitudinal trace of Triaxial Time-History accoloragraph VR-7863 (channel 3) was not functioning properly. Subsequent investigation determined that the cause of this malfunction is a failed sensor associated with the channel. A workorder was initiated to troubleshoot and repair the sensor, however, due to the location of the subject instrumentation (drywell),

repairs can not be completed until the next scheduled or forced outage.

The parts necessary to repair the channel have been pre-staged, necessary workorders have been written, and the affected channel will be repaired at the first outage of sufficient duration to permit a drywell entry and subsequent repair.

Should you have any further questions, please contact Mr. Rick Cowles of my staff, at (609)339-3431.

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