ML20059K481

Notice of Violation from Insp on 930824-1014.Violation Noted:Reactor Operating at Approx 75% Power B Sbdg Became Inoperable & Was Not Restored to Operable Status within 7 Days

ML20059K481
Person / Time
Site:	Duane Arnold
Issue date:	01/19/1994
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20059K477	List: IR 05000331/1993021 ML20059K481
References
50-331-93-21, EA-93-255, NUDOCS 9402020117
Download: ML20059K481 (2)

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NOTICE OF VIOLATION Iowa Electric Light and Power Docket No. 50-331 i Company Duane Arnold Energy Center License No. DPR-49 Unit 1 EA 93-255 During an NRC inspection conducted from August 24 through October 14, 1993, violations of NRC requirements were identified. In accordance with the

" General Statement of Policy and Procedure for NRC Enforcement Actions,"

10 CfR Part 2, Appendix C, the particular violations are set forth below:

A. Duane Arnold Energy Center technical specification 3.5.G.1 states' that during any period when one standby diesel generator (SBDG) is inoperable, continued reactor operation is permissible only during the succeeding 7 days unless such SBDG is sooner made operable. If that condition is not met, an orderly shutdown shall be conducted and the  !

reactor shall be taken to hot shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and  ;

taken to cold shutdown within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. 1 Contrary to the above, on July 21, 1993, with the reactor operating at approximately 75 percent power, the "B" SBDG became inoperable. The "B" SBDG was not restored to operable status within 7 days and the reactor was not taken to hot shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, or cold shutdown within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. (01013)

8. lechnical specification 3.9.D.l. requires that with core alterations in progress, one SBDG shall be operable with its associated standby gas system train and its main control room ventilation standby filter unit subsystem.

Contrary to the above, from August 7,1993, to August 11, 1993, with core alterations in progress, both SBDGs were inoperable. (01023)

This is a Severity Level 111 problem (Supplement I).

Pursuant to the provisions of 10 CFR 2.201, Iowa Electric Light and Power Company (Licensee) is hereby required to submit a written statement or explanation to the U.S. Nuclear Regulatory Commission, ATIN: Document Control Desk, Washington, D.C. 20555 with a copy to the Regional Administrator, Region III, and a copy to the NRC Resident Inspector at the Duane Arnold Energy Center, within 30 days of the date of the letter transmitting this Notice of Violation (Notice). This reply should be clearly marked as a " Reply to-a Notice of Violation" and should include for each violation: (1) the reason for the violation, or, if contested, the basis for disputing the violation, (2) the corrective steps that have been taken and the results achieved, (3) the corrective steps that will be taken to avoid further violations, and (4) the date when full compliance will be achieved. If an adequate reply is not i

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rueived within the time specified in this Notice, an Order or a Demand for information may be issued to show cause why the license should not be modified, suspended, or revoked or why such other action as may be proper should not be taken. Where good cause is shown, consideration will be given to extending the response time.

9402020117 940119 PDR ADOCK 05000331 G PDR

flotice of Violation 2

' Under the authority of Section 182 of the Act, 42 U.S.C. 2232, th_is response shall be submitted under oath or affirmation.

l Dated at Lisle, Illinois l this 19th day of January 1994 1

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