ML19343D253

Forwards Ma Cassaro Response to NRC 810320 Ltr Re Engineering Confidence Criteria.Explanations Insufficient to Conclude That Criteria Have Been Met by S&L/Portland Cement Association Test

ML19343D253
Person / Time
Site:	Marble Hill
Issue date:	03/26/1981
From:	Dattilo T DATTILO, T.M.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19343D254	List: ML19343D253 ML19343D259
References
NUDOCS 8105040046
Download: ML19343D253 (1)

Text

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n IL THOMAS M. DATTILO ,\'o[ Ch

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March 26, 1981 \\ '-

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CT United States Nuclear Regulatory Commission -

Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 ATTN: Mr. James G. Keppler, Director

-Re: STN 50-546 STN 50-547

Dear Mr. Keppler:

Thank you for your response to Dr. Cassaro dated March 20, 1981. Find enclosed as Exhibit "A" herein Dr. Cassaro's specific response to yours.

This writer in conjunction with the enclosed Exhibit "A" categorically states that the NRC has no c responded to the March 4, 1981 letter of Dr. Cassaro and the specific statistical and quality control engineering comments therein. It is our position that your alleged explanations are simply insufficient to manifest to the NRC that its own criteria'of 95% reliability with 95% confidence has been met and/or exceeded by the test program devised by Sgt. & Lundy and conducted by Portland Cement Association.

In addition, it was our specific understanding that no NRC responses would be made until there was time to review what the independent engineers stated in a final written report subject to the additional input of Dr. Cassaro.

From all indications, it is not necessarily correct that the NRC has approved the testing standards and criteria specifically set out by the NRC in its prior orders herein. For that reason, we await 1.he final written repor*s of the independent engineers and the specific reports of the NBC.

Very truly yours, N-Thomas M. Dattilo TMD/mjb Er. losure b 810so4oo%l0 MAR 3 01981 l t  ;