ML19325C611

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Responds to IE Bulletin 79-27 Re Surveillance Testing of Automatic Transfer Switches.Util Has Not Yet Determined Whether Periodic Testing of Switches Necessary Based on Previously Mentioned Considerations
ML19325C611
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 10/10/1989
From: James Fisicaro
ARKANSAS POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
1CAN108912, IEB-79-27, NUDOCS 8910170112
Download: ML19325C611 (2)


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): . Arkansas Power & Light Company 425 West Capts P. O Bom b51 -

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C October' 10,-1989-ICAN198912 g U. S. Nuclear Regulatory Commission Document Control Desk-Washington, DC 20555

Subject:

- Arkansas Nuclear One - Unit 1

,j Docket No. 50-313 License No. DPR-51 L

Response:to IE Bulletin 79-27 Audit SE Concerns -

y Surveillance Testing of Automatic Transfer Switches-l.

H Gentlemen:  !

Your;1etter dated July 7, 1989 (ICNA078905) transmitu J the Safety Evaluation

_ .(SE) of the NRC staff's December 5-8, 1988 audit of the AP&L/ANO-1 response to L IE Bulletin 79-27. The staff concluded in the SE that_ AP&L has adequately 4
' resolved
the concerns of "EB 79-27, but expressed concern that ANO-1 has no L procedures for testing the non-nuclear instrumentation (NNI)/ICS power supply autcmatic bus transfer (ABT) switches and the inverter static transfer switches.

Your' letter further requested that we evaluate the NRC staff's position that L

_perio'dic testing of the switches;is necessary to demonstrate their reliability,

=and that we provide the respits of our evaluation and plans for testing,

" - As discussed with the IEB 79-27 audit team members during the audit and in the audit exit meeting, AP&L does perform routine preventive maintenance (cleaning and inspection) of the switches under the AP&L PM Program. The specific PM procedures were. developed in accordance with the equipment manufacturers' recommendations.

AP&L has not yet determined whether periodic testing of the switches is

.necessary based on the previously mentioned considerations. We anticipate 8910170112 891010-PDR ADOCK- 05000313

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Page 2 p September:25, 1989:

'our decision within.30 days at which time we will provide you withs n -informationLas requested.

W - Very truly yours,. .

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. Fisicaro-James

. Manager, Licensing 1 JJF/RBT

=cc:: Mr. Robert Martin U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 or LArlington, TX 76011 NRC Senior: Resident Inspector Arkansas Nuclear One - ANO-1 Number 1, Nuclear Plant Road

Russellville, AR 72801

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