ML20030D749

Forwards Clarification of 810805 Request for Addl Geologic Info

ML20030D749
Person / Time
Site:	Perry
Issue date:	09/04/1981
From:	Houston M Office of Nuclear Reactor Regulation
To:	Davidson D CLEVELAND ELECTRIC ILLUMINATING CO.
References
NUDOCS 8109160047
Download: ML20030D749 (3)

Text

v SEP 0 41981 Docket Nos. 50-440 50-441

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.N W. Da1wyn R. Davidson SEP 10198 P. O. Box 5000

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Vice President-Engineering Q

Cleveland Electric 111tsninating Company "855 ca cleveland, Ohio 44101

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Subject:

Clarification of Pequests for Additional Information-neologic Data On Auoust 5.1081 we transmitted a request for additional information including RFAI 231.3 and 231.4. To enable you to more directly respond, we are providing the enclosed clarification of these two RFAIs.

Please contact me at (301) 402-8593 if you have further questions on this matter.

Sincerely, M. D. Houston, Project Manager Licensing Branch No. 2 DL Division of Licensing

Enclosure:

As stated above cc w/enclns_re:

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L Mr..Dalwyn R. Davidson Vice President, Engineering _

l The Cleveland Electric Illuminating Company l

P. O. Box 5000 Cleveland, Ohio

'44101'

-cc: Gerald Charnoff, Esq.

l Shaw, Pittnan, Potts & Trowbridge t

_1800 M Street, N. u.

Washington, D. C.

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-Donald H. Hauser, Esq.

Cleveland Electric Illuminating Company P.-0. Box 5000 l

- Cleveland, Ohio 44101 U.- S. Nuclear Regulatory Commission l

Resident Inspector's Office i

Parmly at Center Road Perry, Ohio 44081 Donald T. Ezzone, Esq.

Assistant Prosecuting Attor.iey i-l 105 Main Street Lake County Administration Center l

Painesville, Ohio '44077 l

i Tod J. Kenney 228 South College Apt. A Bcaling Green, Ohio 43402 Daniel D. Wilt Wegman, Hesiler & Vanderberg 7301 Chippewa Road, Suite 102 Brecksville, Ohio 44141 Jeff Alexander i

920 Wilimington Ave.

Dayton, Ohio 45420 Terry Lodge, Esq.

W 915 Spitzer Building Toledo, Ohio 43604 I

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GLARIFICATION OF REQUESTS FOR ADDITIONAL GE0 LOGIC INFORMATION 231.3 and 2'. 4 PERRY NUCLEAR POWER PLANTS, UNITS 1 & 2 THE CLEVELAND ELECTRIC ILLUMINATING COMPANY DOCKET NOS. 50-440 & 50-441 The U. S. Geologice.1 Survey has reviewed the geologic data for the Perry Nuclear Power Plant Units 1 and 2 Final Safety Analysis Report, Section 2.5 (Und.ited).

The age and origin of the tunnel faults are indeterminate based on interpretation of the data in the FSMt.

In the section " Tunnel Deformation Origir," (FSAR p. 2.5-75 to 77; equivalent to " Conclusions", GAI Report

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2063, p. 41 to 43) the Applicant seems to '(1) stress the importance and implications of the microcrack study; it implies older noncapable faulting, (2) downgrade the implications of the gouge consolidation study, it implies younr r, capable faulting, and (3) speculate about glacially-induced fault movements; they imply nontectonic, hence, noncapable. faulting. This

.latter point.is the important one and needs to be amplified-;-the glacially-related phenomena seem to be the youngest tangibic sources of stress that could have caused the last tunnel fault movement and that are now apparently nonexistent.

In order to ' clarify and strengthen that argument, the Applicant should. consolidate applicable data scattered through the FSAR and expand on important ideas by responding to Requests for Additional Information 231.3 and 231.4

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