ML19208B910
| ML19208B910 | |
| Person / Time | |
|---|---|
| Site: | 05000580, 05000581 |
| Issue date: | 09/07/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Mcwhorter R OHIO EDISON CO. |
| References | |
| NUDOCS 7909240142 | |
| Download: ML19208B910 (1) | |
Text
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!(pa necoq'o, UNITED STATES
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,n NUCLEAR REGULATORY COMMISSION
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REGION 111
'/99 ROOSEVELT ROAD g Q]3 SEP GLEN ELLYN,il'.INols 60137 Pre-CPP The Ohio Edison Company
. ATTN:
Mr. R. J. McWhorter Vice President Engineering 76 South Main Street Akron, OH 44308 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 additional information regarding this matter, please contact this office.
Sincerely, Q c-v u + h l1'Mf
/' James G. Keppler 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 S83250 L
700924011)
SSINS:
6820 Accesstion No.: 7908220109 UNITED STATES NUCLEAR REGULATORY COMMIS5 ION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTCN, D.C.
20555 September 7, 1979 1E Bulletir. No. 79 14
/
Supplement 2 SEISMIC ANALYSIS FOR AS-BUILT SAFETY-RELATED PIPING SYSTEMS Description of Circumstances:
s IE Bulletin No. 79-14 was issued on July 2, revised onfJuly 18, and first supplemented on August 15, 1979.
The bulletin requested licensees to take certain actions to verify that seismic analyset are applicable to as-built plants.
Supplement 2 provides the following additional guidance _with regaril to impicmentation 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 tha seismic analysis.
Some archittet-ergineers (A-E) however, are recommending that their customers inspect these sp toms 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 nonconformances.
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 oays.
If either the enginee ing judgement or the andytical 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 'end other inspection elements, and have not documented wlT N m Visual estimation of dimensions is D DUPLICATE DOCUMENm Jo32[51 where visual estimates are used, thy ante requirements.
Further, in doce ically identify those data that werg Entire docwnent previously entered Ninto system under:
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