ML19208B774
| ML19208B774 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 09/07/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | John Miller GEORGIA POWER CO. |
| References | |
| NUDOCS 7909210367 | |
| Download: ML19208B774 (1) | |
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UNITED STATES 8
NUCLEAR REGULATORY COMMISSION 6'#
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s REGION II Md
\\***h 101 MARIETTA ST N.W SUITE 3100 ATLANTA.GEORotA 30303 In Reply Refer To:
SEP 7 197g RII:JPO 50-321, 50-366 50-424, 50-425 Georgia Power Company Attn:
J. H. Miller, Jr.
Executive Vice President 270 Peachtree Street, N.W.
Atlanta, Georgia 30303 Gentlemen:
The enclosed supplement to 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 ofEtce.
Sincerely, q_.. _ __..
James P. O'Reilly Director,
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Enclosures:
1.
Supplement 2 to IE Bulletin S8?,OTd?<
No. 79-14 2.
List of IE Bulletins Issued ji,
in the 7ast Six Months e-
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Georgia Power Company,
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M. & nry, Plant k nager Post Office Box 442 Baxley, Georgia 31513 C. E. Belflower Site $ Supervisor Post Office Box 442 Baxley, Georgia 31513 K. M. Gillespie Construction Project Manager Post Office Box 282 Waynesboro, Georgia 30830 E. D. Groover QA Site Supervisor Post Office Box 282 W ynesboro, Georgia 30830 P
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SSINS: 6820 Accesstion No.: 7908220109 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 September 7, 1979 IE Bt. letin No. 79-14 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, 197'.
The bulletin requested licenseer. 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 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 offues for comparison by the analyst co 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 inspect.ng against later drawings. The licensee should assure that he is promptly notified when the AE identifier 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 obtained in that way.
Visual estimation of dimensions is not encouraged for moet measurements: however, where visual estimates are used, the ance requirements. Further, in docum/g DUPLICATE DOCUMENT uJ',gGZ4 4.cally identify those data that were Q
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