ML20247E850

Ack Receipt of 890504 Response to Violations Re Configuration Control of Integrated Control Sys Noted in Insp Repts 50-313/89-04 & 50-368/89-04.Planning Dates for Implementation & Completion of Actions Requested by 890831

ML20247E850
Person / Time
Site:	Arkansas Nuclear
Issue date:	05/17/1989
From:	Callan L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Campbell G ARKANSAS POWER & LIGHT CO.
References
NUDOCS 8905260355
Download: ML20247E850 (2)

See also: IR 05000313/1989004

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MAYL I 71989

In Reply R fer To: c

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50-368/89-04-

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Arkar.sas Power & Light Company - t >

' ATTN: Mr.. Gene Campbell

.Vice President, Nuclear

Operations

P.O. Box 551

Little' Rock, Arkansas 72203

Gentlemen::

This. acknowledges the receipt of your May 4,1989, response to our letter

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dated April 3,1989. We recognize that determining the correct course of j

action for addressing configuration control of the Integrated Control System l

may require significant enluation. To ensure that we are informed of your '

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activities, we request that you keep us informed of your evaluations' and

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C . provide us with your planning dates for the implementation and. completion of- j

your actions. We request that this information be forwarded'to us by August 31,

1989. .;

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Sincerely,

4/Ef8AWR

L. J. Callan, Director  !

Division of Reactor Projects :j

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Arkansas Nuclear One  !

' ATTN: J. M. Levine, Executive  :

Director, Nuclear Operations 1

P.O. Box 608 .

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Russellville Arkansas 72801 i

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Arkansas Radiation Control Program Director

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RSTS Operator' Project Engineer (DRP/A)

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OCAN058903 ii

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L. J. Callan, Director

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Division of Reactor Projects

U. S. Nuclear Regulatory Commission

Region IV

611 Ryan Plaza Drive, Suite 1000

Arlington, Texas 76011

SUBJECT: Arkansas Nuclear One - Units 1 and 2

Docket Nos. 50-313/50-368

License Nos. OPR-51 and NPF-6

Response to Inspection Report

50-313/89-04 and 50-368/89-04

Dear Mr. Callan:

In Inspection Report 50-313-368/89-04 (0CNA048901), you requested

that we inform you of any corrective actions we will be implementing

to preclude future wiring errors associated with the nonsafety-related

ANO-1 Integrated Control System (ICS). As discussed in the inspection

report, recent modifications were made to enhance the ICS as part of

implementing a Babcock and Wilcox Owners Group Safety and Performance

Improvement Program. Because of the importance of ICS reliability in

unit transient control, extensive postmodification testing was

performed. Discrepancies were later identified during a unit trip,

ac discussed in the inspection report. Additional testing and wiring

verifict.tions were performed to assure ICS adequacy subsequent to

correcting the discrepancies.

As a result of the wiring discrepancies, we are evaluating options to

address configuration control for ICS modifications. The different

options will be presented to Management for a decision as to the

course of action to pursre. At this time, we are unable to advise

you of the corrective actions beyond the current evaluation of

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Page 2 of 2

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available options. We expect that the evaluation will require an

additional two months to complete and will require a month for

Management review before a course of action can be established. We

do not believe that any safety concerns exist with the current status

of the IC5; therefore, the evaluation period is justified. Following

development, we will inform you of the actions we will be taking to

preclude future wiring discrepancies within the ICS.

Very truly yours,

.. C.C. twwc.-/p& c - .=f

E. C. Ewing

General Manager,

Plant Support

ECE: PLM: sgw

cc: U. S. Nuclear Regulatory Commission

Document Control Desk

Mail Station P1-137

Washington, D. C. 20555

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