ML19249C776

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Forwards LERs 79-074/03L-0 & 79-075/03L-0
ML19249C776
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 09/12/1979
From: Trimble D
ARKANSAS POWER & LIGHT CO.
To: Seyfrit K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19249C777 List:
References
2-099-8, 2-99-8, NUDOCS 7909180490
Download: ML19249C776 (1)


Text

.L-mm ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 UTTLE ROCK ARKANSAS 72203 (501)371-4000 September 12, 1979 2-099-8 K. V. Seyfrit, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011

Subject:

Arkansas Nuclear One-Unit 2 Docket No. 50-368 1.icense No. NPF-6 Reportable Occurrence Report Nos. 50-36S/79-074; 50-365/79-075 (File:

2-05201 Gentlemen:

In accordance with Arkansas Nuclear One - Unit 2 Technical Specification 6.9.1.9., we have attached the subject reports concerning the "A" CPC trips being bypassed to allow the change out of the RSPT power supplies which were causing erroneous position indication inputs (50-368/79-074);

and the tripping of the "B" CPC channel caused by an inaccurate output indication from the data link in CEAC #1 (50-368/79-075),

Very truly yours, b(w-0$ f.

David C. Trimble

^1anager Licensing DCT:REI:gp Attachment ec:

Mr. Victor Stello, Jr, Director Mr. W. D. Johnson Office of Inspection and U. S. Nuclear Regulatory Commission Enforcement P. O. Box 2090 U. S. Nuclear Regulatory Commission Russellville, AR.

72801 g gtg e

Washington, D.C. 20555

[p Mr. Norman Haller, Director Office of Management and Program Analysis U. S. Nuclear Regulatory Commission

(

Kashington, D.C.

20555 7 9 0918 Oggg MEMBE A rACOLE SOUTH UTILITIES SYSTEM