ML19249C063
| ML19249C063 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 08/20/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Nichols T SOUTH CAROLINA ELECTRIC & GAS CO. |
| References | |
| NUDOCS 7909070266 | |
| Download: ML19249C063 (2) | |
Text
s e
1-l w REe
/g UNITED ST ATES
'o
! ~*
y, (/'T,'
NUCLEAR REGUL ATORY COMMISSION REGION 11 2-WJ r
101 M AH 4 TT A ST, N W. Sun E 3100
- d'$ r f AT L AN1 A, CEORGI A 30303 v4/
g%,..e In Reply Refer To:
t.UG 2 01$79 RII:JPO 50-395 South Carclina Elte tric and Gas Ccepany ATTN:
T. C. Nic bols, Jr., Vice Pr esident Power Production and Syste=r Operations P. O. Box 764 Columbia, SC 2921E Gentlemen:
Enclosed is IE Bulletin No. 79-02, Revision 1, Supplement No. 1, which is for-varded to you for information. No written response is required.
If you desire this office.
additional information regarding this matter, please contact Sincerelv,
< N rf(
% w -
James P. O' R ' illy Di r e.c to r
Enclosures:
1.
IE Bulletir. No. 79-02, Revision No. 1 (Supplenent Na. 1) 2.
Listing of IE Bulletins Issued in Las: Six Months M [} l
~'
I
<)
t f j' I 9]Ii[}llru _a 7909 0 7c:3 e e 1173 u A L uu l?I e v.
AUL 2 6 gyg South Carolina Electric and Gas Company cc w/cocl:
T. B. Conners, Jr.
Conners, Moore and Corber
~ 1747 Pennsylvania Avenue, N.W.
Washington, D.C.
20006 A. A. Smith Quality Assurance Post Office Box 8 29065 Jenkinsville, South Carolina O. S. Bradbam, Manager Nuclear Operations Post Office Box 8 29065 Jenkinsville, South Carolina 0
1 l f)
SSINS: 6820 Accession No:
7908150164 UNITED STATES NUCLEAR REGUI.ATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 August 20, 1979 1E Bulletin No. 79-02 Revision No. 1 (Supplement No. 1)
PIPE SUPPORT BASE PLATE DESIGNS USING CONCRETE EXPANS 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 whic operability.
the original design factors of safety were not met but some le 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 theFa 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 acd for the support steel the original design factor of safety com-pared to ultimate strengths is met.
CN "IA# #
The above criteria may be applied b"
=
graded to design margins of safet} [ 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:
0$If0My ANO
'~
} 3 0 h
( '; '
No. of pages:
_ _ _ _