ML19317F517

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Provides Info to Suppl Unusual Event Rept UE-270/75-17 Re Inadvertent Isolation of Letdown Flow.Contributing Cause: Lack of Adequate Procedural Control to Prevent Unauthorized Personnel from Performing Certain Functions
ML19317F517
Person / Time
Site: Oconee Duke Energy icon.png
Issue date: 01/13/1976
From: Parker W
DUKE POWER CO.
To: Moseley N
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8001140747
Download: ML19317F517 (2)


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7 CONTI:OL NO. 436 Fil E:._ I!;lU IMilr_p.Lu_._-

[Q)H: Duke lu.ter Co.

DATE OF DOC DATE RiiC'D Ll R TWX-RPT OTHER Charlotte, N.C.

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'l-13-76 1-20-76 XXX 10:

ORIG CC OTill:R SENT!:cc PDILXXX.

N.C. Moseley 1 Signed 0

SENT LOCAL PDR. XXX CLASS UNCLASS-PROPINFO INPUT NO CYS REC'D DOCKET NO:

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50-27.0_ ____._

DESCRIPTION-EI)CLOSUlsES:

Supplement' Unusual EvonttReport /; 75-17, L

Concerning the inadverent isolation of letdown flow....

(1 Cy. Rec 6ived)

DO NOT REMOVE PLANT N AME:

Oconce # 2 ACKNOWLEDGED

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s C. Moseley, Director C

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230 Peachtree Street, Northwest Atlanta, Georgia 30303

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Re: Oconee Unit 2

. Docket No. 50-270

Dear Mr. Moseley:

The following information is submitted to supplement Unusual Event Report UE-270/75-17 isolation of letdown flow:

Origina11y, this incident was reported to have resulted from A contributing a misunderstanding between personnel involved.

cause, however, was the lack of adequate procedural control to prevent unauthorized personnel from performing functions whichTo preve may affect unit or station operation.of this type, Oconee Administra revised to assure more accurate communication between operating and maintenance personnel and in particular to delineateThe responsibilities for the operation of station valves.

procedure requires that the Control Operator be notified prior l

to the performance of any function affecting operation i

to removing an instrument or component from service or return ng Also, with certain exceptions as listed in the procedure, no personnel other than operators sha it to service.

i Ve truly yours, f

us.L 8 h William O. Parker, Jr.

EDB:mmb CC Mr. Benard C. Rusche V34 r