ML19331C592

Final Deficiency Rept Re Concrete Pour of Slab at Elevation 383 Ft in Auxiliary Bldg Using 3,500 Psi Concrete Instead of 5,500 Psi Concrete.Contractor QA Personnel Must Now Be Immediately Notified of Change Request Initiation

ML19331C592
Person / Time
Site:	Marble Hill
Issue date:	07/25/1980
From:	Shields S PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA
To:
Shared Package
ML19331C589	List: ML19331C592
References
NUDOCS 8008190083
Download: ML19331C592 (2)

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PUBLIC SERVICE INDIANA S. W. Shields Senior Vice Presdent -

Nuclear Dwaion July 25,1980 Mr. James C. Keppler, Director Docket Nos.: STN 50-546 U. S. Nuclear Regulatory Commission Regior. III STN 50-547 799 Roosevelt Road Construction Permit Nos.:

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

Dear Mr. Keppler:

On July 24, 1979, Mr. C. E. Chmielewski of Public Service Company of Indiana, Inc. , (PSI) telephoned your office to notify you of a potentially reportable incident as required by 10 CFR 50.55(e).

This incident was the failure of Newberg-Marble Hill (N-MH) to incorporate Contractor Change Request (CCR) 200 into its concrete pour located at the 383' elevation in the Auxiliary Building. The pour was made on March 29,1979, using 3500 psi concrete instead of the 5500 psi concrete requir&d by CCR 200.

l As discussed in the interim report of August 23, 1979, Sargent

& Lundy Engineers performed an evaluation of the pour area and I

found that, based on the 91-day compression data, the concrete strength was adequate to meet design requirements. Also as discussed in the interim report, PSI investigated the potential breakdown of

! the N-MH Quality Assurance Program. It was determined that the delayed l

reporting of the incident by N-MH QA personnel was an isolated occurence, however some deficiencies did exist in the N-MH QA Program. N-MH personnel could previously initiate Contractor Change Requests without notifying their QA personnel and hang hold tags on pours without logging or notifying QA personnel until after the Contractor Change Request was approved. These deficiencies have been corrected and N-MH QA personnel must now be immediately notified of Contractor Change Request initiation and hold tags will be hung by N-MH QA personnel.

N-MH has also conducted training for timely reporting of deficiencies.

As no construction deficiencies resulted which would have adversely affected the safety of operations of the plant, this incident is JUL 311sso P.O. Box 190, New Washington, Indiana 47162 812. 293.4441 8 0 0 819

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1 PUBLK SERVICE INIMANA Letter: Mr. James G. Keppler July 25,1980 not reportable under 10 CFR 50.55(e).

If you have any questions, please feel free to contact me.

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

J. J. Harrison

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