ML19208B713
| ML19208B713 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 09/07/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| NUDOCS 7909210255 | |
| Download: ML19208B713 (1) | |
Text
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September 7, 1979 Docket Nos. 50-277 50-278 Philadelphia Electric Company ATTN: Mr. S. L. Daltroff Vice President Electric Production 2301 Market Street Philadelphia, Pennsylvania 19101 Gentlemen:
The enclosed supplement to Bulletir. No. 79-14 is forwarded to you to provide added guidance on the intent of the Bulletin.
If you desire additional information regardir.g this matter, please contact this office.
Sincerely,
.N oyce H. Grier Director
Enclosures:
1.
Supplement 2 to IE Bulletin No. 79-14 2.
List of IE Bulletins Issued in Last Six Months cc w/encls:
W. T. Ullrich, Station Superintendent Troy B. Conner, Jr., Esquire Eugene J. Bradley, Esquire Raymond L. Hovis, Esquire Mici.oel J. Scibinico, II, Assistant Attorney General WS008 7909210 b
ENCLOSURE 1 SSINS:
6820 Accession No.: 7908220109 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WA3HINGTON, D.C.
20555 IE Bulletin No. 79-14 Supplement 2 Date:
September 7, 1979 Page 1 of 2 SEI5MIC 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 satisfyirg 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 thue systems against the latest revisions of the drawings and mark them as necessary to define the as-built configuration of the systems. These drawinr ue 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 identifi,es 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 elements, and have not documented which DUPLICATE DOCUMENT 37(,3O()$
Visual estimation of dimensions is not where visual estimates are used, the ac Entire document previously entered ance requirements.
Further, in documen into system under:
icallyidenti.fythosedatathatwerevis}e 90 MD O/0 7 a
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