ML19249C059
| ML19249C059 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| 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 7909070258 | |
| Download: ML19249C059 (2) | |
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UNITED STATES NUCLE AR REGULATORY COMMISSION 3
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REGION 11
$ 4(O'T.Ih[e,f 101 M ARit il A ST., N W, Stilt 13100 o,,
Q ATL ANT A. GE ORGI A 303H AUG 2 0 195 In Reply Refer To:
F.II:JPO 50-321 50-366 Georgia Power Compan:.
ATTN:
J. 11. Miller, Jr.
Execut ive '.'i c t President 270 Peachtrec Street Atlanta, CA 30301 Gentlemen:
Enclosed is IE Eulletin No. 79-02, Kevision 1. Supple: rent :,
1, which clar: ries f acilit'. ;ier )
NRC positions on actions requested with regard to your power :tactoT with an operating license.
Should you have any questions regarding this Bulletin or th( actions requitec. by you, please contact this office.
Sincerely,
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J.tmes P. O' Reil 4y Director
Enclosures:
1.
IE Bulletin Na. 79-C2, Revision No. 1 (Supplement No. 1) 2.
Listing of IE Eulletins Issued in 1,ast Six Mcnths hhlMI d (u)! Jj,3 7909070258 h
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AUG 2 0 g/p Georgia Power Company cc w/ encl:
N. Hanry, Plant Manager Post Office Box 442 Baxley, Georgia 31513 C. E. Belflower Site QA Supervisor Post Office Box 442 Baxley, Georgia 31513 0 ') /
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SSINS:
6820 Accession No:
7908150164 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND EhTORCEMEhT WASHINGTON, D.C.
20555 August 20, 1979 IE Bulletin No. 79-02 Revision No. 1 (Supplement 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.
the original design factors of safety were not met but some les tion.
installation objectives but systems may be classed as operable on an interim basis available.
with some lesser margin providing a program of restoration to at least theFac 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-mate strengths is less than the original design but equal to or greater a.
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 strengths is met.
The above criteria may be applied p_
m-graded to design margins of safety DUPLICATE DOCUMENT and by the next refueling for nona fined in Bulletin No. 79-14 where ' Entire document previously entered of the plant which can be entered into system under:
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l ANO No of pages:
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