ML19208B887
| ML19208B887 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 09/07/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| References | |
| NUDOCS 7909240107 | |
| Download: ML19208B887 (1) | |
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Docket No. 50-440 Docket No. 50-441
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The Cleveland Electric Illuminating Company ATTN:
Mr. Dalwyn R. Davidson Vice President - Engineering P. O. Box 5000 Cleveland, OH 44101 Gentlemen:
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
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additional information regarding this matter, please contact this office.
Sincerely,
'h.....a _h /Q
[A e James G. Ked er Director
Enclosure:
Supplement 2 to IE Bulletin No. 79-14 cc w/ encl:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Harold W. Kohn, Power Siting Commission Mr. Daniel D. Wilt, Attorney 3832G8 7909240107
SSINS:
6820 Accesstion No.: 7908220109 UNITED STATES HUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT MSHINGTON, D.C.
20555 September 7, 1979 IE Bulletin No. 79-14 b
Supplement 2 SEISMIC ANALYSIS FOR AS-BUILT SAFETY-RELATED PIPING SYSTEMS Description of Circumstances:
IE Bulletin No. 79-14 was issued on July 2, revised on July 18, and first supplemented 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 requiri.ments 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 revisions of the drawings and mark them as necessary to define the as-built configuration of the systems. These drawings are then returned to the AE'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 nonconfornances. That guidance is appropriate for licensees inspecting against later drawings.
The licensee should assure that he is promptly notified when the AE 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 pipe lengths and other inspection elements, and have not documented which data.have been.obtai.ned in that way Visual estimation of dimensions is not where visual estimates are used, the ac lUJPLICATE DOCUMENT ante requirements.
Further, in documen ically identify those data that were vi Entire document previc h red inte system under:
ANO lf 0&0 /O No. of pages: