05000368/LER-1980-059, Forwards LER 80-059/03L-0

Forwards LER 80-059/03L-0

ML19344E672
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/26/1980
From:	Trimble D ARKANSAS POWER & LIGHT CO.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344E673	List: 05000368/LER-1980-059, Forwards LER 80-059/03L-0 05000368/LER-1980-059-03, /03L-0:on 800727,during Mode 1 Operation,Core Operating Limits Supervisory Sys Plant Computer Program Indicated Power Margin of -80% Rather than Expected 0% at Rated Power.Probable Cause:Intermittent Hardware Failure
References
2-080-17, 2-80-17, NUDOCS 8009020449
Download: ML19344E672 (2)

LER-1980-059, Forwards LER 80-059/03L-0

Event date:
Report date:
3681980059R00 - NRC Website

text

___________ ___

ARKANSAS POWER & LIGHT COMPANY POST OCFICE BOX 551 LITTLE ROCK. ARKANSAS 72203 (501) 371-4000 August 26, 1980 2-080-17 Mr. K. V. Seyfrit, Di mctor Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011

SUBJECT:

Arkansas Nuclear One - Unit 2 Docket No. 50-368 License No. NPF-6 Licensee Event Report No.c 80-059/03L-0 (File: 2-0520)

Gentlemen:

In accordance with Arkansas Nuclear One - Unit 2 Technical Specification 6.9.1.9.b, attached is the subject report concerning the failure of the Core Operating Limits Supervisory System (COLSS) plant computer program during Mode 1 operation.

Very truly yours, k aie. C 14 David C. Trimble Manager, Licensing DCT/GAC/lp Attachment cc: Mr. Victor Stello, Jr., Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Mr. Nonnan M. Haller, Director Office of Management and Program Analysis U. S. Nuclear Regulatory Comm.

gashington, D.C.

20555 30u9020Nf i

veuesmoxe soum ur,uries svsreu 3