ML20155A679

Further Comments on Board 851111 Statistical Inference Memorandum.Joint Affidavit of D Lurie & E Marinos Addressing Board Concerns on Statistical Inferences from Comanche Peak Review Team Sampling Encl

ML20155A679
Person / Time
Site:	Comanche Peak
Issue date:	04/04/1986
From:	Mizuno G NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD)
To:
Shared Package
ML20155A683	List: ML20155A679 ML20155A685
References
CON-#286-667 OL, NUDOCS 8604090218
Download: ML20155A679 (2)

Text

b. .

1 UNITED STATES OF AMERICA 000KETED NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD 86 APR -7 P3 :55 In the Matter of ) 0FFICE U / t. .

) 00CKEilhda 5LF'N TEXAS UTILITIES ELECTRIC ) Docket Nos. 50-445 Q COMPANY, et M. ) 50-446

)

(Comanche Peak Steam Electric )

Station, Units 1 and 2) )

NRC STAFF'S FURTHER COMMENTS ON THE STATISTICAL INFERENCE MEMORANDUM I. INTRODUCTION On November 11, 1985, the Licensing Boards 1# issued their

" Memorandum (Statistical Inferences from CPRT Sampling)" (" Memo-rand um") . Therein , the Board expressed certain propositions and con-cerns about the statistical sampling process developed and being used by the CPRT. The Board acknowledged that the CPRT Program Plan and results are not yet in evidence, but raised its concerns now to avoid delay at a later state in this proceeding. Memorandum at 1. The Board invited the comments of the parties on the points made in the Memo-randum. Memorandum at 4-5.

The Staff submitted its comments on the Board's concern regarding the potential need for an exemption from Appendix B (see Memorandum at

4) on January 30, 1986. "NRC Staff Comments on Statistical Inference

-1/ On December 24, 1985, the two dockets in this proceeding were unified into one docket before the initial Licensing Board.

• There-fore, all further reference will be to the " Board."

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Memorandum" (" Staff Comments"). The Staff there indicated that the Board chairman consented to the Staff's proposal that it be permitted to respond to the Board's technical questions on statistics in a Supplemental Safety Evaluation Report ("SSER") evaluating the CPRT Program Plan,

, then expected to be issued at the end of February 1986. The Staff also indicated that it was the Board chairman's desire that if the issuance of the SSER was delayed, the Staff would endeavor to address the matters raised in the Memorandum in a separate filing. Staff Comments, pp.2-3 and n.5.

By letter of February 28, 1986, the Staff informed the Board that issuance of the SSER would be delayed beyond the end of February, and that the Staff would respond to the Board's Memorandum in a separate filing to be submitted by March 14, 1986. Subsequently, the Staff informed the Board that this filing would be submitted by April 4,1986.

Attached please find the " Joint Affidavit of Dan Lurie and Evangelos Marinos Addressing the Board Concerns on Statistical Inferences

! From CPRT Sampling", which responds to the technical concerns in the Board's Memorandum.

Respectfully submitted, G .ry . :izuno Counsel or NRC Staff Dated at Bethesda, Maryland this p4 day of / , 1986

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