05000270/LER-1982-009, Forwards LER 82-009/03L-0.Detailed Event Analysis Encl

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Forwards LER 82-009/03L-0.Detailed Event Analysis Encl
ML20062G196
Person / Time
Site: Oconee Duke Energy icon.png
Issue date: 07/30/1982
From: Parker W
DUKE POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20062G200 List:
References
NUDOCS 8208120271
Download: ML20062G196 (2)


LER-2082-009, Forwards LER 82-009/03L-0.Detailed Event Analysis Encl
Event date:
Report date:
2702082009R00 - NRC Website

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7 co Mr. James P. O'Reilly, Regional Administrator ,6 U. S. Nuclear Regulatory Commission Region 11 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re: Oconee Nuclear Station Docket No. 50-270

Dear Mr. O'Reilly:

l Please find attached Reportable Occurrence Report R0-270/82-09. ' Ibis report is submitted pursuant to Oconee Nuclear Station Technical Specification 6.6.2.1.b(2) which concerns operation in a degraded mode permitted 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. My letter of July 16, 1982 addressed the delay in preparation of this report.

Very truly yours,

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William O. Parker, Jr. M<j '[

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Attachment l

l cc: Document Control Desk Mr. W. T. Orders U. S. Nuclear Regulatory Commission NRC Resident Inspector l

l Washington, D. C. 20555 Oconee Nuclear Station l

l Records Center i Institute of Nuclear Power Operations 1820 Water Place r

Atlanta, Georgia 30339 i

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7 DUKE POWER COMPANY OCONEE NUGEAR STATION UNIT 2 ,

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' Repcrt Number: R0-270/82-09  ! > , ', 3 I

f Report Date: July 29, 1982 ,

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Occurrence Date: June'16, 1982

< s Facilityi Oconee Unit 2, Seneca, South Carolina Identification of Occurrence: 2B Emergen;y Feedwater Flowpath Inoperable s.

Condition 1 Prior to Occurrence: 59% FP Description of Occurrence: On June 16,1982, =1uring performance of the Quarterly Valve Functional Operation Test, Valve 2FDW-31t would not fully open. The valve was declared luoperable, thereby making the 2B Emergeray Feedwater Flowpath inoperabic.

8 Apparent Cause of Octorrence: The apparent cause of this incident wat- that the x manual valve handwheel was found partially shut, preventing the valve frem fully

, opening. The last n! intenaree completed on the valve, on April 20, 1982, included 3

a satisf actory stroke test of the valve. The reason for the mispositioned 1.and-wheel could not be idertified.

Analysis of Occurrence:, During this incifent Valve 2FDW-315 was operable and would have provided flov to the 2A steam generator. One steam generator is capable of removing core decay heat. Additionally, Valve 2FDW-316 was manually operable. 1hus, it,is considered that this incident did not affect the health and safety of the public.

Cort % tive Action: The h;indwheel was repositioned to allow the valve to fully open. The valve was tested satisfactorily. To prevent future occurrences of r this ir.cident the handwheels of Valves FDW-315 and FDW-316 of all three units will be locked open.

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