ML19323B110

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Responds to IE Bulletin 79-14, Seismic Analysis for As- Built Safety-Related Piping Sys. Results of Accessible Piping Support Stress Analysis Will Be Provided by 800410
ML19323B110
Person / Time
Site: Arkansas Nuclear 
Issue date: 02/12/1980
From: Trimble D
ARKANSAS POWER & LIGHT CO.
To: Seyfrit K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-79-14, NUDOCS 8005090275
Download: ML19323B110 (1)


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ARKANSAS 70WER & LIGHT COMPANY POST OFFICE BOX 551 UTILE ROCK. ARKANSAS 72203 (501) 371-4000 February 12, 1980 1-020-11 Mr. K. V. Seyfrit, Director 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 1 Docket No. 50-313 License No. DPR-51

Subject:

IE Bulletin 79-14 (File: 1510)

Gentlemen:

By letter dated November 27, 1979, you were informed that following pipe stress analysir, of AN0-1 " accessible piping" per IE Bulletin 79-14, re-analysis of pipe support loads revealed some loads to be in excess of those shown on the support drawings. Although ar. initial engineering evaluation revealed no inoperable supports, we committed to provide you with the results of more extensive analytic evaluations by February 9, 1980.

A recent outage of ANO-1, however, has provided us the opportunity to work on normally inaccessible piping.

Due to these efforts the evaluation of support loads for accessible piping has not been completed.

ANO-1 has been returned to service and analytical work on accessible piping support loads is now in progress. We plan to provide you with the results of this analysis by April 10, 1980. The results of required analysis for inacces-sible piping will also be provided by this date as stated in our letter of January 7, 1980.

Very truly yours,

&$f David C. Trimble Manager, Licensing DCT:DRH:nak cc: Mr. W. D. Johnson U.S. Nuclear Regulatory Commission Post Office Box 2090 Russellville, Arkansas 72801 MEMBEA MeOOLE SOUTH UTTUTIES SYSTEM