ML20058E819
| ML20058E819 | |
| Person / Time | |
|---|---|
| Site: | Marble Hill |
| Issue date: | 07/23/1982 |
| 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, S82-08, S82-8, SVP-0014-82, SVP-14-82, NUDOCS 8207300211 | |
| Download: ML20058E819 (2) | |
Text
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r PUBLIC SERVICE
- NDIANA July 23, 1982 S82-08 S. W. Shields SVP-0014-82 Senior Vice President -
Nuclear Division 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 April 23, 1982, 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). This item pertained to the discovery of spalling at one location on the underside of the 401 ft. elevation floor slab in the Unit 2 Auxiliary Building.
Examination of the affected surface indicated the spalling was due to aggregate shear failure and not unsound concrete.
The probable cause of the concrete spalling was the movement of a 4100 Manitowoc crane over the affected area. Calculations and observations by PSI's architect-engineer, Sargent & Lundy indicate that while the force exerted by the crane was great enough to spall the concrete, stress in the reinforcing steel was not sufficient to damage the steel. Consequently the steel and its attendant slab would have been able to perform their
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intended safety functions, and as such no reportable occurance exists under 10 CFR 50.55(e). If you have any questions on this matter, please feel free to contact me.
Sincerely, S. W. Shields SWS/SJB/bak F2073OO211 820723 PDR ADOCK 05000546 S
PDR gg Q P. O. Box 190, New Washington, Indiana 47162 812. 289.3000 gig
V SERVICE 8* * ' Letter:
J. G. Keppler July 23, 1982
-S82-08 SVP-0014-82 cc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Conunission Washington, D. C.
20555 J. E. Konklin J. J. Harrison
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