ML19199A217
| ML19199A217 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/08/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Herbein J METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7904040363 | |
| Download: ML19199A217 (1) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Bulletin No. 79-03 Date: March 12, 1979 Page 1 of 3 LONGITUDINAL WELD DEFECTS IN ASME SA-312 TYPE 304 STAINLESS STEEL PIPE SP0OLS MANUFACTURED BY YOUNGSTOWN WELDING AND ENGINEERING COMPANY Description of Circumstances:
On September 27, 1978, the Arizona Public Service Company reported that defects had been discovered in longitudinal welds 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 104 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 welding the longitudinal seam without filler metal.
Pullman discovered defects in the longitudinal welds while radiographing their circumferential shop weids.
Further radiographic examination of the longitudinal welds revealed rejectable porosity and lack of fusion.
Pullman then performed ultrasonic examination of the full length of the longitudinal welds and discovered indications exceading the acceptance criteria of ASME Section III.
Further ultrasonic examination revealed indications in other piping subassemblies where pipe was supplied by Youngstown.
Two indications verified by radiography were identified a-porosity and measured 0.350 inch by 0.125 inch in one case and 0.300 inch by 0.125 int.h i : another case in pipe with a nominal wall thickness of 0.375 inch.
Tne additional examinations revealed that of 103 spools and four pipe supports shipped to PVNGS, 44 spools and one pipe support were found to contain ultrasonic indications exc- ___
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Of 65 partially fabricated similarly defective.
The acceptan DUPLICATE DOCUMENT Youngstown includes 100 percent ul Entire document previously entered into system under:
ll - Ill ANO 7463/6N32 7 g(
7903160138 No. of pages:
6
R E Got UNITED STATES
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631 PARK AVENUE KING OF PRUSSI A, PENNSYLVANI A 19406 March 8, 1979 Docket Nos. 50-289 50-320 MetroDolitan Edison Company ATTN:
Mr. J. G. Herbein Vice President - Generation P. O. Box 542 Reading, Pennsylvania 19640 Gentlemen:
The enclosed IE Bulletin No. 79-02 is forwarded to you for action.
A writter response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely, kl n
v_t-Boyce H. Grier Director
Enclosures:
1.
Listing of IE Bulletins Issued in Last Twelve Months cc w/encls:
E. G. Wallace, Licensing Manager J. J. Barton, Project Manager R. C. Arnold, Vice President - Generation L. L. Lawyer, Manager - Generation Operations - Nuclear G. P. Miller, Superintendent J. L. Seelinger, Unit 1 Superintendent J. B. Logan, Unit 2 Superintendent G. A. Kunder, Unit 2 Superintendent - Technical Support I. R. Finfrock, Jr.
Mr. R. Conrad G. F. Trowbridge, Esquire Miss Mary V. Southard, Chairman, Citizens for a Safe Environme.it 790404D967