ML20217J992

Notice of Violation from Insp on 970423-0610.Violation Noted:As of 960710,licensee Failed to Demonstrate That Condition of Sys Was Being Effectively Controlled Through Performance of Appropriate Preventive Maint

ML20217J992
Person / Time
Site:	Fort Calhoun
Issue date:	08/11/1997
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML20217J973	List: IR 05000285/1997009 ML20217J992
References
50-285-97-09, 50-285-97-9, EA-97-280, NUDOCS 9708150098
Download: ML20217J992 (2)

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NOTICE OF VIOLATION Omaha Public Power District Oocket No. 50 285 t Fort Calhoun Station License No. DPR-40 EA 97 280 I

During an NRC inspection conducted on April 23 through June 10,1997, a violation of NRC requirements was identified, in accordance with the " General Statomont of Policy and Procedure for NRC Enforcement Actions," NUREG 1000, the violation is listed below:

a 10 CFR 50.05(a)(1) states, in part, that each holder of a licenso to operato a nuclear plant shall monitor thu performance of structures, systems, or components, against licensee established goals, in a manner sufficient to provide reasonable assuranco that such structures, systems and components, as defined in paragraph (b), are capable of fulfilling their intended functions. Such goals shall be established

, commensurate with safety and, where practical, take into account industry wide i operating experience.

10 CFR 50.05(b) states,in part, that the scope of the monitoring program specified in paragraph (a)(1) shallinclude safety related and nonsafety related structures, systems, and components as follows: (2) Nonsafety related structures, systems, or components: (iii) Whose failuro could causo a reactor scram or actuation of a safety related system.

10 CFR 50.05(a)(21 states, in part, that monitoring an specified in paragraph (a)(1) is not required where it has been demonstrated that the performance or condition of a structure, system or component is being effectively controlled through the performance of appropriato proventive maintenance, such that the structure, system or component remains capablo of performing its intended function. >

Contrary to the above, as of July 10,1990, the time when the licenseo elected to not monitor the performance or condition of the turbine extraction steam system against licensco established goals pursuant to the requiremants of section (alli), the licensoo had f ailed to demonstrate that the condition of this system was boing  ;

effectively controlled through the performance of appropriato preventive maintenance, such that the system remained capable of performing its intended function. Specifically, the licensee's method of demonstrating the condition of the system, monitoring pipe wall thicknesses using a predictivo methodology to ensure that minimum wall thicknesses were not exceeded, was inadequate. The method was inadequate because errors and omissions in the licensee's approach created erroneous predictions in wall thicknesses. These erroneous predictions allowed significant degradation to go undetected in certain piping ssctions within the fourth stage extraction steam system without appropriate maintenance being performed.

As a result, a catastrophic failure of the second' downstream large radius piping j sweep in the fourth stage extraction steam system occurred on April 21,1997, '

vyNch resdted in a plant transient.

Yhla is a Soverity Lovel IV violation (Supplement 1). -

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Purhuant to the provisions of 10 CFR 2.201, Ornaha Public Power District is h required Commission, toATTN:

submit a written statement or explanation to the U.S. Nuclear Regulat Regional Administrator, Region IV,611 Ryan Plaza Drivo, Suit 70011, and a copy to the NRC Resident inspector at the facility that is the subject Notico, within 30 days of the dato of the lotter transmitting this Notico of Violation (Noticeh This reply should be clearly marked as a " Reply to a Notice of Violat;on" and should includo for each violation: i (1) the reason for the violations, or, if contested, the basis for disputing the violation, (2) the corrective steps that have been taken and the results achieved, (3) the correctivo steps that will be taken to avoid further violations, (4) the date when full complianco will be achieved. Your response may reference or include previous docketed correspondence, if the correspondence adequately ad required responso, if an adequato reply is not roccived within the timo specified in this Notice, an order or a Demand for Information may be issued as to why the licenso sh not be modified, suspended, or revoked, or why such other action as may be proper not bn taken.

responso time. Where good cause is shown, consideration will be given to extending Because your responso will be placed in the NRC Public Document Room (PDRh to extent possible, it should not includo any personal privacy, proprietary, or safeguards information so that it can be placed in the PDR without redaction if personal priv proprietary information is necessary to provide an acceptable response, then pleas a bracketed copy of your response that identifies the information that should be prote and a redacted copy of your response that dolotos such information. If you request withholding of such material, you amit specifically identify the portions of your respo that you sock to have withheld and provido in detail the bases for your claim of withhol ing (e.g., explain why the disclosure of information will create an unwarranted invas personal privacy or provide the information required by 10 CFR 2.790lb) to support a request for withholding confidential commercial or financialinformation). If safeguards informction is necessary to provide an acceptablo response, please provide the love protection described in 10 CFR 73.21.

Dated at Arlington, Texas this 11th day of August,1997

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