ML20032A075

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Ro:On 811018,during Valve Lineup Check,D Main Steam Line MSIV Leakage Control Sys Manual Valve V-84-16 Was Found Closed,Making Leakage Control Sys Inoperable.Cause Under Investigation
ML20032A075
Person / Time
Site: Duane Arnold NextEra Energy icon.png
Issue date: 10/19/1981
From: Mineck D
IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
DAEC-81-522, NUDOCS 8110280255
Download: ML20032A075 (1)


Text

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J/ng/jfp (b'h Iowa Electric Light and Ibwer Company October 19, 1981 DAEC 522 A

Mr. James G. Keppler, Director

$N Office-of Inspection and Enforcement - Region III 6 k[,4'{ h %\\

U. S. Nuclear Regulatory Commission y OCT2 71981% J; 799 Roosevelt Road

.E; Glen Ellyn, IL 60137 U.L m mggg[]~

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Subject:

Prompt Notification of a n

Reportable Occurrence b

%g ry FF File: A-118a

Dear Mr. Keppler:

This letter, telecopied to your office, is intended to satisfy the requirement for prompt notification of a Reportable Occurrence in accordance with Specification 6.11.2.a of the Duane Arnold Energy Center Technical Specifications.

Technical Specification paragraph (s) violated:

3.7.E.1 Description Occurrence:

During a valve line up check on 10/18/81, "D" main steam line MSIV leakage control system manual valve V-84-16 was found closed. The correct position for this valve is locked open. This misalignment affectively made the leakage control system for the "D" main steam line MSIVs inoperable. The cause is under investigation.

Very truly yours, b

Daniel L. Mineck Chief Engineer Duane Arnold Energy Center DLM/JVS/pl g

cc: Director, Management Information and Program Control- (2)

U. S. Nuclear Regulatory Commission hl O Washington, D. C.

20555 U. S. Nuclear Regulatory Commission c/o Document Management Branch-Washington, D. C.

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