ML19208B788
| ML19208B788 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 09/07/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 7909210397 | |
| Download: ML19208B788 (1) | |
Text
CENTRAL FILES PDR:HQ M'pa aro,
v UNITED STATES L R E y.,,(/g['g, NUCLEAR REGULATORY COMMISSION g
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611 RYAN PLAZA DRIVE, SUITE 1000 AR LINGTON, T EX AS 76012
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September 7, 1979 Docket Nos.
50-313 50-368 Arkansas Power and Light Company ATTN:
Mr. William Cavanaugh III Vice President of Generation and Construction P. O. Box 551 Little Rock, Arkancac 72203 Gentlemen:
g The enclosed supplement to IE Bulletin No. 79-14 is forwarded to you to provide added guidance on the intent of the Bulletin.
If you desire ad-ditional information regarding this matter, please contact this office.
Sincerely, 2
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'Karl V,.
Seyfrit
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Director
Enclosures:
1.
Supplement 2 to IE Bulletin No. 79-14 2.
List of IE Bulletins Issued in the Last Six Months cc: James P. O'Hanlon, Plant Manager Arkansas Nuclear One P. O. Box 608 Russellville, Arkansas 72801 bb)L2.U2
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UNITED STATES NUCLEAR REGULATORY CO?D1ISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Bulletin No. 79-14 Supplement 2 Date:
September 7,1979 Page 1 of 2 SEIS'I" ANALYSIS FCR AS-3UILT SAFETY-RELATED PIPING SYSTEMS Des::::tran if Circumstances:
IE Eulletin No. 79-14 was issued on July 2, revised on July 18, and first supple =ented on August 15, 1979. The bulletin requested licensees to take certain actions to verify that seismic analyses are applicable to as-built plants. Supplement 2 provides the following additional guidance with regard to implementation of the bulletin requirements:
Nonconformances One way of satisfying the requirements of the bulletin is to inspect safety-related piping systems against the specific revisions of drawings which were used as input to the seismic analysis. Some architect-engineers (A-E) however, are recommending-that their customers inspect these systems against the latest revisioas of the drawings and mark them as necessary to define the as-built configuration of the systems. These drawings are then returned to the A-E's offices for comparison by the analyst to the seismic analysis input. For licensees taking this approach, the seismic analyst will be the person who will identify nonconformances.
The first supplement to the bulletin provided guidance with regard to evaluation of nonconformances. That guidance is appropriate for licensees inspecting against later drawings. The licensee should assure that he is promptly notified when the A-E identifies a nonconformance, that the initial engineering judgment is completed in two days, and that the analytical engineering evaluation is completed in 30 days.
If either the engineering judgement or the analytical engineering evaluation indicates that system operability is in jeopardy, the licensee is expected to meet the applicable technical specification action statement.
Visual Approximations Some licensees are visually estimating i e len ths and other ins ection elements, and have not documented which,
Visual estimation of dimensions is not
' DUPLICATE DOCUMENT fj[go,2'Ji,7 where visual estimates are used, the ac ance requirements. Further, in documen ically identify those data that were vi Entire document previously entered into system under:
HO622 BIO 9 ANO No. of pages:
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