ML20076C184

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Interim Deficiency Rept Re Cracks in Welds at Stiffeners to Box Beams in Containment Bldg.Initially Reported on 830715.Cause Under Investigation.Next Rept Will Be Submitted by 831007
ML20076C184
Person / Time
Site: Marble Hill
Issue date: 08/15/1983
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, S83-34, SVP-0116-83, SVP-116-83, NUDOCS 8308220260
Download: ML20076C184 (2)


Text

N PUBLIC SERVICE INDIANA S. W. Shields August 15, 1983 Senior Vice President -

S83-34 Nuclear Division SVP-0116-83 Mr. James G. Keppler, Docket Nos.: STN 50-546 Regional Administrator STN 50-547 U. S. Nuclear Regulatory Commission Construction Permit Nos.:

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

Dear Mr. Keppler:

On July 15, 1983, Mr. S. J. Brewer of Public Service Company of Indiana, Inc. (PSI) notified your office of a potentially reportable item as required by 10 CFR 50.55(e). Cracks in welds at stiffeners to box beams in the Unit 2 containment building were discovered af ter reinspection of the welds. Required visual inspection found the welds acceptable while supplemental magnetic particle examinations detected the cracks.

Since the magnetic particle examinations are not required and are not always performed, it is possible that the cracked welds could have gone undetected. Had this condition gone uncorrected, it could have affected adversely the safety of operations of the plant during a seismic event.

PSI is currently working to determine the cause for the cracks and implement corrective action to prevent recurrence. PSI is also determining and implementing repairs to the cracked weld areas.

This letter is intended to fulfill the thirty (30) day reporting requirements of 10 CFR 50.55(e) and is considered an interim report.

A further report will be filed on or before October 7,1983. If you have any questions regarding this matter, please contact me at your convenience.

8308220260 830815 '

PDR ADOCK 05000547 g S PDR S. W. Shields a

SWS/LGY/bak 1 lAug171993 '

P. O. Box 190, New Washington, Indiana 47162 812. 289.3000

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""~ Letter: J. C. Keppler August 15, 1983 S83-24 SVP-0116-83 cc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 J. E. Konklin J. F. Schapker

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