ML19207C448
| ML19207C448 | |
| Person / Time | |
|---|---|
| Site: | Marble Hill |
| Issue date: | 09/05/1979 |
| 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 | |
| NUDOCS 7909110634 | |
| Download: ML19207C448 (2) | |
Text
0905790085
~
PUBLIC SERVICE INDIANA September 5, 1979 1 W. Shields N ice Presx2ent Electnc Svstem Mr. James G. Keppler, Director U.S. Nuclear Regulatory Ccemission Docket Nos.: STN 50-546 STN 50-547 Region III 799 Roosevelt Road Construction Per=it Nos.:
Glen Ellyn, Illinois 60137 CPPR-170 CPPR-171 Marble Hill Nuclear Generating Station Units 1 & 2
Dear Mr. Keppler:
On August 6, 1979, Mr. J. U. Bott of Public Service Company of Indiana, Inc.
(PSI) telephoned your office to notify you of a potentially reportable in-cident as required by 10CFR50.55(e). In November 1978 Co==onwealth-Lord J.V. installed temporary lighting in the Auxiliary Building by utilizing approxi=ately 220 "Hilti" type shot-on studs. These studs were installed into e= bedded safety-related grade A-36 steel plates without an approved procedure or an evaluation as to the potantial effects on the embedded plates.
In most cases, these shot-on studs were placed en the edge or in a corner of the embedded plates so as not to interfere with any per=anent fixtures to be welded to the plate. These subject studs are shot onto the embedded plate using a.22 caliber or a.45 caliber shell which forces the approximately 1/8" dia=eter stud shaft into the plate.
PSI was unable to determine that this incident was not significant and there-fore elected to report it as potentially significant under 10CFR50.55(e).
The following corrective actions have been taken to insure proper installa-tion of such studs in the future by Ccenonwealth-Lord:
1.
No attach =ents are to be made to safety category I structures until written authorization is available.
2.
All attachments to safety category I structures are to be installed in accordance with approved procedures.
b I
I'
\\ {
7 9091104T9
- CCO East Main Street s'ainfiec, incrana 26168 317 339 9611