ML20040E662

Forwards LER 81-020/03L-0.Detailed Event Analysis Encl

ML20040E662
Person / Time
Site:	Oconee
Issue date:	01/25/1982
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20040E663	List: ML20040E662 ML20040E664
References
NUDOCS 8202050219
Download: ML20040E662 (2)

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• January 25, 1982 Mr. James P. O'Reilly, Reg.' anal Adrainistrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re: Oconee Nuclear Station Docket No. 50-270

Dear Mr. O'Reilly:

Please find attached Reportable Occurrence Report R0-270/81-20. This report is submitted pursuant to Oconee Nuclear Station Technical Spec-ification 6.6.2.1.b(2) which concerns operation in a degraded mode per-mitted by a limiting condition for operation, and describes an incident which is considered to be of no significance with respect to its effect on the health and safety of the public.

Ve y truly yours A yC

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cc: Director Records-Center Office of Management and Program Analysis Institute of Nuclear Power U. S. Nuclear Regulatory Commission Operations Washington, D. C. 20555 1820 Water Place Atlanta, Georgia 30339 Mr. W. T. Orders NRC Resident Inspector Oconee Nuclear Station Ol#FICIAL Chk]

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OCONEE NUCLEAR STATION UNIT 2 Report Number: R0- 270/81-20 i

! Report Date:' January 25, 1982 I Occurrence Date: December 26, 1981 Facility: Oconee Unit 2, Seneca, South Carolina Identification of Occurrence: Channel 'A' BWST level instrumentation inoperable.

Conditions Prior to Occurrence: 30% FP Description of Occurrence: On December 26, 1981 the BWST channel 'A' level instrumentation was declared inoperable due to erratic indication in the control room.

Apparent Cause of Occurrence: The apparent cause of this occurrence could not be determined'due to the intermittent occurrence of the erratic indication. There has been no recurrence of the erratic indication.

Analysis of Occurrence: Channel 'B' BWST leve1' instrumentation was operable during this event. The BWST level was maintained within Technical Specifica-

. tion limits, ensuring an adequate supply of water for emergency cooling.

Therefore, the health and safety of the public wenanot affected by this

! incident.

a Corrective Action: The instrument string check was performed and "as found" data was within Technical Specification limits. The instrument was returned to service and declared operable.

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