ML19331D827

Interim Deficiency Rept Re Lack of Full Penetration Welds for Attachments to Class I Pipe.Attachment Welds Will Be Reworked Providing Full Penetration.Class II & III Attachments Will Be Evaluated & Rept Furnished

ML19331D827
Person / Time
Site:	Summer
Issue date:	08/28/1980
From:	Nichols T SOUTH CAROLINA ELECTRIC & GAS CO.
To:
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8009030621
Download: ML19331D827 (2)

Text

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SOUTH CAROLINA ELECTRIC a gas COMPANY m.v onics .on s..

• COLUMalA. SOUTH CAROUNA 292t8 T.C. NicMcLs,Ja.

v.ce s.c .... . o c, cm., August 28, 1980 (Nuclear Operations)

Mr. James P. O'Reilly, 71 rector U. S. Nuclear Regulatory Commission Region II, Suite 3100 101 Marietta Street, N. W.

Atlanta, Gecrgia 30305

Subject:

Virgil C. Summer Nuclear Station Docket No. 50/395 Potential Significant Deficiency Full Penetration Attachment Welds on Class I Piping Nuclear Engineering File 3.1051

Dear Mr. O'Reilly:

On July 30, 1980, Mr. Bob McFarland of NRC-0IE Region II was notified of a potential significant deficiency under the provisions of 10CFR50.55(e) regarding lack of full penetration welds for attach-ments to Class I pipe. This is a violation of design requirements.

These welds were made by ASME qualified welders using approved procedures. The welds were examined by magnetic particle or liquid penetrant methods in accordance with approved procedures; however, the lack of full penetration was uncovered only after these welds were radiographed. The film revealed incomplete penetratica and/or incomplete fusion.

This finding has been documented on site (NCN-2137) and will be dispositioned by reworking the Class I attachment welds to provide full penetration as required. Inspection will be verified by RT or UT that full penetration welds have been achieved.

In addition to_the above corrections for the Class I lines, Class II and Class III full penetration pipe attachments will be inspected and evaluated, including both field and shop welds. The evaluation will consist of measuring the actual fillet reinforcement of welds to determine whether sufficient weld metal is available to carry-the design loads.

30/7 5

/ C) .

e 8009080 621

Mr. James P. O'Reilly August 28, 1980

? age Two This is an interim report on this matter. Further information will be furnished after completion of the above evaluation. If there are any questions, please contact us.

Very truly yours, T. C. Nichols, Jr.

HR:TCN:rh cc: V. C. Summer - -

G. H. Fischer B. A. Bursey-W. A. Williams, Jr.

T. C. Nichols, Jr.

E. H. Crews, Jr.

H. T. Babb D. A.,Nauman

. O. S. Bradham O. W. Dixon, Jr.

T. B. Conner R. B. Clary Inspection & Enforcement (Washington)

Mument Management Branch (Washington)

NPCF/Whitaker File e

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