ML19249C061
| ML19249C061 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 08/20/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | John Miller GEORGIA POWER CO. |
| References | |
| NUDOCS 7909070261 | |
| Download: ML19249C061 (2) | |
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UNITED STATES
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,r, NUCLEAR REGULATORY COMMISSION 4
,I REGION 11 o
101 M ARIETT A ST., N.W.,5UITE 3100 E
ATLANT A, GEcaGIA 30303
%,..... p In Reply Refer To:
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AUG 2 0 Igis Georgia Power Corrany ATIN:
J. H. Miller, Jr.
Executive Vice President 270 Peachtree Street Atlanta, GA 30303 Genu _sen:
Enclosed is IE Eulletin No. 79-02, Revision 1, Supplement W.
1, whict,is for-warded to you for inforcation.
No written response is required.
If you desire additional information regarding this matter, please contact t his of fice.
Sincerely,
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James'P. O'Reilty Director
Enclosures:
1.
IE Bulletin No. 79-02, Revision No. 1 (Supplement 50. 1) 2.
Listing of IE Lulletins Issued in Last Six Months D) O l r) IM,
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K. M. Gillespie Construction Project Manager Post Office Box 282 Waynesboro, Georgia 30830 E. D. Groover QA Site Supervisor Post Office Box 28.
Waynesboro, Georgia 30830
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SSINS: 6820 Accession No:
7908150164 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND EhTORCEMENT WASHINGTON, D.C.
20555 August 20, 1979 IE Bulletin No. 79-02 Revision No. 1 (Supplee nt No. 1)
PIPE SUPPORT BASE PLATE DESIGNS USING CONCRETE EXPANSION Description of Circumstances:
The supplement to IE Bulletin No. 79-02 is intended to establish criteria for the evaluation of interim acceptability of plant operation with less than the design factors of safety for piping supports due to as-built problems, under design, base plate flexibility, or anchor bolt deficiencies.
In the reviews for system operability of the Duane Arnold and Crystal River facilities, criteria have been developed by the NRC staff that defines pipe support The criteria has been applied in lieu of other analysis or evalua-Specifically, the licensees identified problems with pipe supports in which operability.
tion.
the original design factors of safety were not met but some les available.
installation objectives but systems may be classed as operable on an interim basis with some lesser margin providing a program of restoration to at least the Facilities which fall outside the Bulletin factors of safety has been developed.
operability criteria are considered to probably require a Technical Specifica-tion exception and will require review on a case by case basis.
Action to be Taken by Licensees:
For the following two cases, plant operation may continue or may begin:
For the support as a unit, the factor of safety compared to ulti-a.mate strengths is less than the original design but equal to or greater than two.
For the anchor bolts the factor of safety is equal to or greater than b.two and for the support steel the original design factor of safety com-pared to ultimate ctrengths is met.
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=vstems are up-The above criteria may be applied I
graded to design margins of safety DUPLICATE DOCUMENT and by the next refueling for nona fined in Bulletin No. 79-14 where Ent' evi usly entered of the plant which can be entered into sys em unde 9908t.f0fgy
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