ML20037B373
| ML20037B373 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities, Zion  |
| Issue date: | 05/15/1974 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Brian Lee COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009240802 | |
| Download: ML20037B373 (1) | |
Text
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g UNITED STATES h,
ATOMIC ENERGY COMMISSION j1.
gg DIRECTORATE OF REGULKs ORY OPERATIONS N/
y RFGION 1.i t
4Ms o' 799 ROOSEVELT ROAD GLEN ELLYN, ILLINotS 60137 (312) 856-2s60 j
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M AY 1 5 1974 i
i Co - Ith w aan Company Docket No.
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ATTE: Mr. Byrca Lee, Jr.
W 137 Vice President 50-249 F. O. Boa 767 50-254 Chicago, T114aais 60690 50-265 50-295 j
50-304 OGRtlanEn!
i The anelaaed supplement to DRO Bulletin No. 3 "Failt:rs of Structural l
or Salsaic Support Bolts on Class I Components" is baia8 seat to ptwida you with additional information relative to the estission of cartain stiffanars and Sunsets in addition to defective welding l
reported at other f=414_ ties.
l This information may have appliaability at your facilities. Action requested on your part is identified in Saetion 5 of the ancloaad l
supplement.
j Sinoaraly, i
James G. Espplar Engianal Director i
Entlamura:
l Supplement to DRO Bullatin No. 74-3 i
bec: RO Files i
nn conern1 v41ae PDR l
Local PDR l
OGC, Beth, P-506A l
R. Renfrow, GC (2)
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May 15, 1974 Regulatory Operations Bulletin No. 74-3A i
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i SUFPLD(ENTAL INFORMATION RELATING TO RO BULLETIN No. 74-3 i
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Information was recently received that defective welding had been identified on steam generator support structures supplied to VEPCO,
. the North Anna project, by Sun Shipyard Corporation of Chester, Pennsylvania. The Sun Shipyard Corporstion also supplied similar items for the Public Service Electric & Gas Company, Salem 1 and 2,
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as well as the Consolidated Edison Company, Indian Point 3, projects.
A.
Description of Circumstances A special inspection of these items at the Salem site revealed not only areas of defective welding, but also omission of certain stiffeners and gussets shown on design drawings. The Consolidated Edison Company also noted similar type problems.
The Sun Shipyard Corporation indicates that r.o similar components were provided other nuclear facilities.
E B.
Action Requested in view of these particular type problems with seismic category 1 components as defined in Regulatory Guide 1.29, it is requested that:
i The inspection program requested by Regulatory Operations Bulletin 74-3 " Failure of Structural or Seismic Support Bolts.
on Class I Components" include provisions that could detect
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problems of the type outlined above regardless of your supplier.
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As stated in Regulatory Operations Bulletin 74-3, RO inspectors will review your detailed written programs and procedures.
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