ML20059M291
| ML20059M291 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 09/25/1990 |
| From: | Skolds J SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9010040050 | |
| Download: ML20059M291 (5) | |
Text
_ _ _ _ _ _ _ _ _ - -
+
South Carol 6ne Eketrb & Gee Company i C.
ummer Nuclear $taten Jenunsville. SC PPD 65 M
$$?$$
September 25, 1990 I
i Document Control Desk V. S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 ASME Section XI Volumetric Examination of Steam Generator Tube i
Sheet Welds Gentlemen:
South Carolina Electric & Gas Company (SCE&G) hereby requests relief from the l
ASME Section XI, Code Class 1, requirement for non-destructive examination of welds in the Virgil C. Summer Nuclear Station (VCSNS) steam generators.
Specifically, SCELG is requesting relief from the requirement for 100%
volumetric examination of the circumferential welds in the steam generator tube sheet area. This relief is necessary because the steam generator axis pads and other welded attachments restrict the amount of coverage possible for volumetric examination. Details of the relief request are provided in. contains a sketch which shows the location of the subject weld.
Approval of this request is necessary to support examination planning for Refueling Outage 6 at VCSNS. As such, SCE&G requests that this relief be granted as soon as possible, but no later than March 1, 1991.
Should you have any questions, please call at your convenience.
Very truly yours.
John L. Skolds EWR/JLS: led Attachments c:
O. W. Dixon, Jr./T. C. Nichols, Jr.
C. C. Roberts B. E. Mather R. V. Tanner E. W. Rumfelt S. D. Ebneter NSRC J. J. Hayes, Jr.
NPCF General Msnagers RTS (NRR900011)
HRC Resdent inspector File (810.19-2)
J. B. Knotts, Jr.
/
02 5 L '.
Ok 9010040050 900925 PDR ADOCK 05000395 P
PDC j
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.. At'tachment I to Document Control Desk Letter Sept' ember 25, 1990 Page 1 of 1 CODE CLASS l'NDE RELIEF REQUEST i
l l
COMPONENT: STEAM GENERATORS A, 8 & C RELIEF REQUEST NUMBER:
1-S/G-2 ISOMETRIC SKETCH:
WELD NUMBER:
CGE-1-3100 1
EXAMINA110N REQUIREMENT:
Table IWB-2500 Category B-B (Item B2.040), ASME Code Section XI, 1977 Edition through Summer 1978 Addenda, requires a volumetric examination on the required weld metal and base metal areas of the steam generator circumferential weld joints, including 1/2T beyond each of the two weld metal edges.
JUSTiflCATION FOR RELIEF:
The steam generator axis pads and other welded attachments preclude 100%
l volumetric examination from being performed on the captioned welds.
Total coverage achieved was 100% with 0 degree scan and 98% with 45 & 60 degree scans.
ALTERNATIVE EXAMINATION:
To the extent practical, restricted by the captioned limitations, the required weld metal and base metal areas will be examined by the ultrasonic method.
1 i
--._ -. to Document Control Desk Letter September 25, 1990 Page 1 of 1 t
l wasilNGHOU55 ELECTRIC CORPOR ATION ru.wTnAttyt onLv.
C GE-l 3100 I
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STEAM GENERATORS NOTE:
WLO 1-1 -- LOOP #1 M LD 2 1 -- LOOP #2 E LD 3-1 -- LOOP #3
$08 CLASS 2 i
C.S.
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t CP I
B1 82 s
l e--. 5"T -
4 pd o
Botting (Tvo)
MANWAY (2 EACH) I6 SOLTS 1.88" !N O!AMETER s
14 M
toltine E
1 Hotside 1 81 thru 1 816 CP 1 1
Coldside 1-817 thru l-852 CP 2 2
Hotside 2-61 thry 2-81!
CP 3 2
Coldside 2-817 thru 2 832 CP 4 3
Hotside 3-81 thru 3-B16 CP 5 3
Coldside 3 817 thru 3-832 CP 6 r
d 16 6 6
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., Attachment I to Document Control Desk Letter September 25, 1990 Page 1 cf 1 a
CODE CLASS 1 NDE REllEF REQUEST COMPONENT: STEAM GENERATORS A, B & C 1
RELIEF REQUEST NUMBER:
1-S/G-2 ISOMETRIC SKETCH:
WELD NUMBER:
CGE-1-3100 1
EXAMINATION REQUIREMENT:
Table IWB-2500. Category B-B (Item B2.040), ASME Code Section XI, 1977 Edition through Summer 1978 Addenda, requires a volumetric examination on the required weld metal and base metal areas of the steam generator circumferential weld joints, including 1/2T beyond each of the two weld metal edges.
JUSTIFICATION FOR RELIEF:
The steam generator axis pads and other welded attachments preclude 100%
volumetric examination from being performed on the captioned welds.
Total coverage achieved was 100% with 0 degree scan and 98% with 45 & 60 degree scans.
ALTERNATIVE EXAMINATION:
To the extent practical, restricted by the captioned limitations, the required weld metal and base metal areas will be examined by the ultrasonic method.
l i
RGGachment 2 to Document Control Desk letter September 25. 1990 Page 1 of 1 l
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l WESTINGHOUSE ELECTRIC CORPORATION i
l
!LLUSTRATIVt 081LY,
C G E.1 3iO O l
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NOTE:
1 WLD 1 1 -- LOOP #1 i
W LD 2 1 -- LOOP #2 W LD 3 1 - LOOP #3
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4 7
81 82 s
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MANWAY (2 EACH) I6 BOLTS 1.84' !N O!AMETER s
M.
h toltinn g
1 4tside 1 81 thru h *16 CP 1 1
Coldside 1 817 thru l-832 CP 2 2
4tside 2 81 they 2 816 C) 3 2
Coldside 2-817 thru 2 832 Cr 4 3
4tside 3-81 thru 3 816 CS 5 3
Coldside 3 817 thru 3-832 CP 6
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