05000302/LER-1981-078, Forwards LER 81-078/03L-0.Detailed Analysis Encl

Forwards LER 81-078/03L-0.Detailed Analysis Encl

ML20040C654
Person / Time
Site:	Crystal River
Issue date:	01/06/1982
From:	Mardis D, Poole D FLORIDA POWER CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20040C655	List: 05000302/LER-1981-078, Forwards LER 81-078/03L-0.Detailed Analysis Encl 05000302/LER-1981-078-03, /03L-0:on 811208,during Normal Operation,Emergency Feedwater Ultrasonic Flow indicator,FW-313-FI Exceeded Zero Check Low Limit.Caused by Inability of Instrument to Consistently Indicate Zero Flow.Instrument re-zeroed
References
CS-81-341, NUDOCS 8201290125
Download: ML20040C654 (2)

LER-1981-078, Forwards LER 81-078/03L-0.Detailed Analysis Encl

Event date:
Report date:
3021981078R00 - NRC Website

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g Mr. J. P. O'Reilly, Director Docket No. 50-302 U.S. Nuclear Regulatory Commission Licensee No. DPR-72 Office of Inspection & Enforcemcat LER No. 81-078/03L-0 101 Marietta St., Suite 3100 Crystal River Unit #3 Atlanta, GA 30303 Occurrence Date:

December 8, 1981

Dear Mr. O'Reilly:

Enclosed please find Licensee Event Report 81-078/03L-0 and the attached supplementary information sheet, which are submitted in accordance with Technical Specification 6.9.1.9.b.

Should there be any questicus, please contact us.

Very truly yours, FLORIDA POWER C'RPORATION D. C. Poole David G. Mardis' Nuclear Plant Manager Acting Manager Nuclear Support Services JC/rc Attachments cc: Document Control Desk U. S. Nuclear Regulatory Canmission Washington, DC 20555 8201290125 820106 PDR ADOCK 05000302 S

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l General Office 320i Thirty-founn street soutn. P O Box 14042. st Petersburg. Flonda 33733 613-eos sisi i

SUPPLEMENTARY INFORMATION Report No.:

50-302/81-078/03L-0 Facility:

Crystal River Unit 3 Report Date:

January 6, 1982 Occurrence Date: December 8, 1981.

Identification of Occurrence:

Emergency Feedwater Ultrasonic Flowrate Indicator was inoperable contrary to Technical Specification 3.7.1.2.

Conditions Prior to Occurrence:

Mode 3 (0%).

Description of Occurrence:

At 1310 during normal operation, it was discovered that Emergency.

Feedwater Flow Indicator, FW-313-F1, exceeded the zero check low limit. Maintenance was initiated, and operability was restored at 1700 on December 9, 1981.

Designation of Apparent.Cause:

The cause of this event is attributed to inherent inability of the instrument to consistently indicate zero flow.

Analysis of Occurrence:

Redundancy was provided by Ultrasonic Flow Indicator FW-312-F1.

There was no effect upon the health or safety of the general public.

Corrective Action

The instrument was re-zerced and is checked shiftly, as reported in Licensee Event Report 81-048. The Ultrasonic Flow Transmitters are scheduled to be' replaced with conventional flow transmitters in conjunction with major feedwater modifications currently scheduled for 1983.

Failure Data:

This was the second occurrence of this type, and this is the eleventh event reported under this Specification.

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