PNO-IV-85-058, on 851118,indicated License Limit of 5% of Rated Thermal Power Exceeded for 1 H.Arpms Apparently Calibr to Read High.Actual Thermal Power Probably Did Not Exceed Limit.Evaluation Initiated

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PNO-IV-85-058:on 851118,indicated License Limit of 5% of Rated Thermal Power Exceeded for 1 H.Arpms Apparently Calibr to Read High.Actual Thermal Power Probably Did Not Exceed Limit.Evaluation Initiated
ML20136F241
Person / Time
Site: River Bend Entergy icon.png
Issue date: 11/18/1985
From: Jaudon J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
References
PNO-IV-85-058, PNO-IV-85-58, NUDOCS 8511220072
Download: ML20136F241 (1)


_ -

November 18, 1985 t

PRELIMINARY' NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PN0-IV-85-58 Y '

'This preliminary n'otification 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-NRC staff on this date.

t

. FACILITY: Gulf States Utilities Licensee Emergency Classification:

River Bend Station Notification of Unusual Event St. Francisville, LA Alert Docket #50-458 Site Area Emergency General Emergency

_x_ Not Applicable

SUBJECT:

REDUCED THERMAL LIMIT.POTENTIALLY EXCEEDED The licensee exceeded the indicated license limit of 5% of rated thermal power for approximately one hour on November 18, 1985. The licensee believes that the ARPMs are calibrated so that they read high and that actual thermal power probably did not exceed the license limit. The licensee is evaluating and

- attempting to run a low power calorimetric to determine if the 5_ percent limit wasiexceeded. -

The licensee does not plan to issue a press release but will respond to any 4 media inquiries.

NRR and IE have been informed.

The state of Louisiana has been informed.

i C0'NTACT: J. P.'Jau' don, FTS 728-8140 l

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