ML19282C167
| ML19282C167 | |
| Person / Time | |
|---|---|
| Site: | Catawba, Perkins, Cherokee  |
| Issue date: | 03/12/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Dail L DUKE POWER CO. |
| References | |
| NUDOCS 7903210127 | |
| Download: ML19282C167 (1) | |
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UNITED STATES p as%q#o, NUCLEAR REGULATORY COMMISSION
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REQlON 11 0
101 MARIETTA STREET, N.W.
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ATLANTA, oEoRGIA 30303
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MAR 121979 In Reply Refer To:
RII:JPO 50-413, 50-414 50-488, 50-489 50-490, 50-491 50-492, 50-493 Duke Power Company Attn:
Mr. L. C. Dail Vice President Design Engineering P. O. Box 33189 Charlotte, North Carolina 28242 Gentlemen:
Enclosed is IE Bulletin No. 79-03, which requires action by you with regard to your power reactor facility (ies) with an operating license or a construction permit.
Should you have any questions regarding this Bulletin or the actions required by you, please contact this of fice.
Sincerely, m
g James P. O'Reilly Director
Enclosures:
1.
List of IE Bulletins Issued in Last Twelve Months 7903210127
MRR 121979 Duke Power Company,
cc w/ encl:
D. G. Beam, Project Manager Catawba Nuclear Station P. O. Box 223 Clover, South Carolina 27910 J. T. Moore, Project Manager Cherokee Nuclear Station P. O. Box 422 Gaffney, South Carolina 29340 1
UNITED STATES NUCLEAR REGULATORY C0?C4ISSION OFFICE OF INSPECTION MiD ENFORCEMENT WASHINGTON, D.C.
20555 March 12, 1979 IE Bulletin No. 79-03 LONGITUDINAL WELD DEFECTS IN ASME SA-312 TYPE 30h STAINLESS STEEL PIPE SPOOLS MANUFACTUF.ED BY YOUNGSTOWN WELDING AND ENGINEERING COMPANY Description of Circumstances:
27, 1978, the Arizona Public Service Company reported that On September defects had been discovered in longitudinal velds in ASME Section III class 2 pipe supplied for the Palo Verde Nuclear Generating Station (PVNGS). On November 17, 1978, the Southern California Edison Company reported similar defects in pipe supplied for the San Onofre Nuclear Generating Station, Units 2 and 3 Pullman Power Products of Los Angeles, California supplies safety-related fabricated piping spools of various diameters for the PVNGS.
The defects were discovered by Pullman in ASME SA-312 type 30h stainless steel pipe supplied to Pullman by Youngstown Welding and Engineering Company of Youngstown, Ohio. The pipe is manufactured by rolling plate into cylinders and then fusion velding the longitudinal seam without filler =etal.
Pullman discovered defects in the longitudinal velds while radiographing their circumferential shop velds. Further radiographic examination of the longitudinal velds revealed rejectable porosity and lack of fusion.
Pullman then performed ultrasonic examination of the full length of the longitudinal velds and discovered indications exceeding the acceptance criteria of ASME Section III. Further ultrasonic examination revealed indications in other piping subasse=blies where pipe was supplied by Two indications verified by radiography were identified as Youngstown.
porosity and measured 0.350 inch by 0.125 inch in one case and 0.300 inch by 0.125 inch in another case in pipe with a nominal vall thickness of 0.375 inch.
The additional examinations revealed that of 103 spools and four pipe supports shipped to PVNGS, kh spools and one pipe support were found to contain ultrasonic indications exceeding those permitted by the ASME Of 65 partially fabricated piping spools, 30 were found to be Code.
similarly defective. The acceptance criteria for the pipe supplied by Youngstown includes 100 percent ultrasonic examination of the longitudinal 1 of 3 DU Pd 7903160138