ML20093N893

Informs That Structural Mechanics Assoc Seismic Margin Review Studies Indicate Soil Layering Profiles & Soil Properties Differ from Properties Previously Addressed

ML20093N893
Person / Time
Site:	Midland
Issue date:	05/11/1982
From:	Kane J Office of Nuclear Reactor Regulation
To:	Lear G Office of Nuclear Reactor Regulation
Shared Package
ML19258A087	List: IR 05000329/1978020 IR 05000329/1981012 IR 05000329/1982007 IR 05000329/1982009 IR 05000329/1982014 ML19258A086 ML19351C947 ML20093B251 ML20093B495 ML20093B616 ML20093B708 ML20093B747 ML20093B900 ML20093B940 ML20093C001 ML20093C006 ML20093C017 ML20093C025 ML20093C030 ML20093C035 ML20093C068 ML20093C073 ML20093C079 ML20093C082 ML20093C101 ML20093C104 ML20093C108 ML20093C116 ML20093C174 ML20093C189 ML20093C196 ML20093C226 ML20093C231 ML20093C262 ML20093C318 ML20093C324 ML20093C347 ML20093C354 ML20093C374 ML20093C377 ML20093C390 ML20093C394 ML20093C398 ML20093C405 ML20093C440 ML20093C444 ML20093C649 ML20093M884 ML20093M994 ML20093N005 ... further results
References
CON-BX17-044, CON-BX17-44, FOIA-84-96 NUDOCS 8408020193
Download: ML20093N893 (2)

Text

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UNITED STATES

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NUCLEAR REGULATORY COMMISSION g-t WASHINGTON, D. C. 20555 l

w MEMORANDUM FOR:

George Lear, Chief Structural and Geotechnical Engineering Division of Engineering

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Lyman Heller, Leader Geotechnical Engineering Section k/

Structural and Geotechnical Engineering Branch v

Division of Engineering FROM:

Joseph Kane, Senior Geotechnical Engineer Geotechnical Engineering Section Structural and Geotechnical Engineering Branch Division of Engineering

SUBJECT:

REVIEW EFFORTS REQUIRED OF GE0 TECHNICAL ENGINEERING SECTION IN MIDLAND'S SEISMIC MARGIN REVIEW STUDIES

References:

1.

April 18, 1984 letter from H. Levin, TERA to J. Cook, CPC, J. Keppler, Region III and D. Eisenhut, NRR, on

" Independent Design and Construction Verification (IDCV) Program Meeting Summary" 2.

April 20, 1984 letter from J. Cook, CPC to J. Keppler, Region III, on " Final Report on Potentially Reportable Conditions, Seismic and Structural Design Concerns" Until recently my perception of Geotechnical Engineering Section involvemant in the Seismic Margin Review (SMR) studies was that we would not be involsed because our past safety review efforts had addressed the foundation soil input required in these studies.

Our conclusions on the appropriateness and accept-ability of engineering soil design values had been provided in SSER No. 2 (October 1982) and in testimony for previous ASLB hearing sessions.

Information provided in the above references indicates my perception may not have been correct.

The work by SMA in SMR studies indicates soil layering profiles and soil properties different from what we had previously addressed.

Discrepancies identified in Reference 2 for Safety Concerns and Reportability Evaluations (SCRE) Nos. 9 and 15, now raise concerns on what dynamic soil properties are actually being used in the seismic analysis of Category I structures.

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PDR hE04-96

o G. Lear Based on the information provided in References 1 and 2, I feel it is necessary that GES now become involved in the review of SMR studies and be given the opportunitytoattendmeetingsonSMRtopicssuchastheoneheldonApril17, 1984 for the benefit of TERA s review.

By providing a copy of this memorandum to D. Hood, I am notifying Division of Licensing of the need for GES review of the SMR reports and am requesting that copies of SMR Volumes I, III, VII, VIII, and IX be provided to GES for our review.

I would estimate, based on my pre-sent work schedule, that GES review of the ten SMR documents would oe completed by mid-July 1984.

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Josep Kane, Senior Geotechnical Engineer Geotechnical Engineering Section Structural and Geotechnical Engineering Branch Division of Engineering cc:

J. Knight G. Lear E. Adensam L. Heller P. Kuo D. Hood F. Rinaldi l

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