ML19273C034

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Responds to IE Bulletin 79-03 Re Longitudinal Weld Defects in ASME SA-312 Type 304 Satinless Steel Pipe Spools.Spools Not in Use or Planned for Use
ML19273C034
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 05/10/1979
From: Reed C
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 7906180784
Download: ML19273C034 (2)


Text

Commonwealth Edison One First National Piara Chicago Ilknors p Adoress Repty to Post Office Box 767

, Chicago. Ilhnois 60690 s

May 10, 1979 Mr. James G. Keppler, Director Directorate of Inspection and Enforcement - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Subject:

LaSalle County Station Units 1 and 2 Response to IE Bulletin No. 79-03

" Longitudinal Weld Defects in ASME SA-312 Type 304 Stainless Steel Pipe Spools Manufactured by Youngstown Welding and Engineering Company" NRC Docket Nos. 50-373 and 50-374 Reference (a): J. G. Koppler letter to B. Lee, Jr.

dated March 12, 1979

Dear Mr. Keppler:

Reference (a) transmitted IE Bulletin 79-03 regarding welding defects in certain longitudinally welded pipe spools.

In accordance with that bulletin, we have reviewed the LaSalle County 51ation piping specifications and supplied material and determined the following:

1. Only seamless ASME SA-312 or electric-fusion welded ASME SA-358 is permitted to be used in safety-related systems.

2 Piping supplied for the NSSS does not contain SA-312 material.

3. Piping supplied for balance of plant aafety-related systems does not contain questionable SA-312 material from Youngstown Welding and Engineering Co.

2353 143 7906W0

Commonwealth Edison NRC Docket Nos. 50-373/374 r Mr. James G. Keppler: -

2- May 10, 1979 Based on this review, we conclude that ASME SA-312 stainless steel pipe welded without filler metal manufactured by Youngstown Welding and Engineering Company is not in use or planned for use in safety-related systems at LaSalle County Station Units 1 and 2.

Please address any questions you may have concerning this matter to this office.

Very truly yours, Cordell Reed Assistant Vice-President cc: Director, Division of Reactor Construction Inspection 2353 144 m