ML20054F752

Final Deficiency Rept Re Preheat Requirements for Deletion of post-weld Heat Treating (Item M-43),per 1971 Edition of ASME Code,Section Iii,Paragraph NB-4620.Deficiency Determined Not Reportable

ML20054F752
Person / Time
Site:	Zimmer
Issue date:	06/08/1982
From:	Borgmann E CINCINNATI GAS & ELECTRIC CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, QA-1804, NUDOCS 8206170286
Download: ML20054F752 (2)

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i w _,p TIIII CINCINNATI GAS & ELECTRIC COMPANY ag M CINCINNATI. OHIO 452ol June 8, 1982 QA-1804 E. A. BORGMAN N schoon vict PRE $1D(NT i

l U. S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attention: Mr. J. G. Keppler Regional Administrator RE: WM. H. ZIMMER NUCLEAR POWER STATION UNIT 1 10CFR50.55(e) - ITEM M PREHEAT REQUIRE-MENTS FOR DELETION OF POST W .D HEAT TREATING DOCKET NO. 50-358, CONSTRUC110N PERMIT NO.

CPPR W.O. #57300 JOB E-5590 FILE NO.

NRC-8 M-34 Centlemen:

This letter constitutes a final report to the subject condition reported as a potentially reportable deficiency under 10CFR50.55(e) .

On May 13, 1982, a potentially reportable deficiency was noted in the area of preheat for welding. It was identified that a 200'F preheat was required for welds on piping over 3/4 inches thick and less than 1 inchea thick with a carbon content less than 3.30%. This is a requirement per the 1971 edition of the ASME Code,Section III, paragraph NB-4620. This preheat deletes the requirement of post weld heat treating. Contrary to this requirement welds in this category at the Wm. H. Zimmer Site were preheated to 150' for the first 3/16" of deposited weld metal and 300*F for the remainder of the weld. Preheat was done in accordance with qualified welding procedures.

Upon further investigation, it was found that the Winter 1973 Addenda to the 1971 edition of the ASME Code,Section III, clarified the requirements for preheat. This addenda requires no minimum pre-heat for welds in this category. The applicability of this addenda J

has been confirmed with Sargent & Lundy Engineers, our Architect Engineer. Based on this finding, we have determined the subject de-ficiency to be not reportable.

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Mr. J. G. Keppler U. S. Nuc1 car Regulatory Commission Region III June 8, 1982 - QA-1804 Page 2 We trust that the above will be found acceptable as a final report under the requirements of 10CFR50.55(e) .

Very truly yours, Tile CINCINNATI GAS & ELECTRIC COMP /dY

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By -

E. A. BORGMANN SENIOR VICE PRESIDENT KRS:plc cc: NRC Office of Inspection & Enforcement Washington, D. C. 20555 NRC Senior Resident Inspector Attn: W. F. Christianson k