ML19343D392

Interim Deficiency Rept Re Inadequate Penetration for Lugs Welded on Dravo Supplied Pipe Spools,Initially Reported 810324.Problem Noted at Nine Lug Locations.Failure Would Damage safety-related Sys.Addl Rept by 810821

ML19343D392
Person / Time
Site:	Fermi
Issue date:	04/23/1981
From:	Wells D DETROIT EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, EF2-49-964, NUDOCS 8105040402
Download: ML19343D392 (2)

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April 23, 1981 EF2-49,964 Mr. James G. Keppler, Director Regicn III U.S. Nuclear Regulatory Ccnn'.ission 799 Rcesevelt Road Glen Ellyn, Illinois 60137

Subject:

Interim Report of 10CFR50.55(e) Item cn Inadegaate Penetration for Dravo Lugs (#41) .

Dear Mr. Keppler:

On March 24, 1981, Detroit Ediscn's Mr. H.A. Walker, Supervisor - Cen-struction Ocality Assurance, telephoned Mr. J.E. Konklin of MRC Regica III, to report en a preb1cm with inadequate penetration for lugs welded cn Dravo supplied pipe spels at the Fec.i 2 Site.

It had been noted en a rcutine inspection of a pipe support that a lug which had been welded to the pipe in the shcp by Dravo did rot appear to have adequate penetraticn. This lug as well as other Dravo lugs were to have been full penetratien aelded to large bore pipe at specific loca-tions. Subsequent inspecticn of other Dravo installed lugs indicated that the prchlem existed at a nu:-ber of other 1ccaticns. At the present time, the prcblem has been noted a*. nine (9) lug 1ccations throughcut several systers at the Fen-12 Plant. A turved lug indicates that there is a lack of penetration in the entire length of the lug en the centerline. It is felt that a failure of these lugs would darage safety related systers at the Fer::12 Plant.

Another report en this item, either interin or final, is scheduled to te sent to ycu en er before August 21, 1981. If you have questions ccncern-ing this ratter, please catact Mr. H.A. Walker, Supervisor - Ccnstructicn Quality Assurance.

Very ' y veurs t 9 4 Donald A. Wells, Manager Quality Assurance DTM/EIM/pn

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Mr. James G. Keppler, Director April 23, 1981 Page Two- EF2-49,964 cc: Mr. Victor Stello, Jr., Director Office of Inspecticn and Enforce:nent Divisica of React 0r Inspecticn Programs U.S. Nuclear Regul. tory Caviission Washington, D.C. 20555 Mr. Bruce Little, Resident Inspector U.S. Nuclear Regulatory Ccmnission Resident Inspectors Office 6450 North Dixie Highway Newport, Michigan ' 48166 O

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