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 e g gtg Washington, D.C. 20555 Mr. Norman Haller, Director Office of Management and Program Analysis

[p U. S. Nuclear Regulatory Commission (

Kashington, D.C. 20555 7 9 0918 Oggg MEMBE A rACOLE SOUTH UTILITIES SYSTEM