ML20002B644

Final Deficiency Rept Re Potential Failure of Auxiliary Steel at Facility,Initially Reported on 800813.Corrective Actions:All Affected Pieces Will Be Reworked Per Approved Procedures & Receipt Insp Program Strengthened

ML20002B644
Person / Time
Site:	Marble Hill
Issue date:	12/15/1980
From:	Shields S PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8012220323
Download: ML20002B644 (2)

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PUBLIC  ;

SERVICE .;

INDIANA S. W. Shields Sernor Vice President - .

Nuclear Orvis;on Decembelr 15, 1980 R 3 .

.1 Mr. James G. Keppler, Director Docket Nos.: STN 50-546 U. S. Nuclear Regulatory Commission STN 50-547 Region III Construction Permit Nos.:

799 Roosevelt Road CPPR - 170 Glen Ellyn, Illinois 60137 CPPR - 171 Marble Hill Nuclear Generating Station - Units 1 and 2

Dear Mr. Keppler:

On August 13, 1980, Mr. T. D. Geib of Public Service Company of Indiana Inc. (PSI) notified your office of a potentially reportable item as required by 10 CFR 50.55(e). During a receipt inspection reverification of auxiliary steel performed by the Cherne Contracting Corporation (CCC) several deficiencies were identified. A number of pieces of auxiliary steel, steel used to support pipe hangers, had undercut welds, undersi o fillet welds and incorrect weld contour, pinholes or drawing non-compliances.

While this steel is conservatively designed, failure of some pieces might result if subjected to the extreme loadings which might occur during certain design basis events.

As a result of the deficiencies discovered during reverification inspection, CCC undertook a 100% reinspection of their auxiliary steel. The reinspection revealed additional deficiencies. PSI has examined some of these deficiencies and determined that the structural integrity of the support steel was not l

impaired for those pieces examined. However, due to the number of' deficiencies j generated during the 100% reinspection of auxiliary steel, it would require.

an extensive evaluation to determine if all pieces of auxiliary steel were l adequate to perform their intended function. Therefore all affected pieces of auxiliary steel will be reworked as necessary in accordance with approved procedures.

I As part of the effort to address the Order Confirming Suspension of l

Construction CCC has strengthened the inspection practices used in their receipt inspection program. It is anticipated that this strengthening of CCC's program will prevent problems similar to this'one from occurring in the future.

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b 8 P.OJ Box 190. New Washington, Indiana 47162 812. 293.4441 L

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L r' PUBUC SERVICE leg > LANA Letter: Mr. Keppler December 15, 1980 g This letter is intended to fulfill the requirements of a final report i as defined in 10 CFR 50.55 (e) . If you have any questions about this report, please feel free to contact me.

Sincerely, W

S. W. Shicids TDG/cg cc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 E. R. Schweibinc, P. E.

J. J. Harrison l

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