ML20247E850
| 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:
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Dockets: 50-313/89-04-
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' 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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We recognize that determining the correct course of
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dated April 3,1989.
action for addressing configuration control of the Integrated Control System
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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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. provide us with your planning dates for the implementation and. completion of-
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your actions. We request that this information be forwarded'to us by August 31,
1989.
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Sincerely,
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L. J. Callan, Director
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Division of Reactor Projects
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Arkansas Nuclear One
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' ATTN:
J. M. Levine, Executive
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Director, Nuclear Operations
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P.O. Box 608
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Russellville Arkansas 72801
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Arkansas Radiation Control Program Director
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ARKANSAS POWER & LIGHT COMPANY
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OCAN058903
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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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OCAN058903
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May 4, 1989
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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,
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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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