ML19249A276
| ML19249A276 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 07/26/1979 |
| From: | Greeves J Office of Nuclear Reactor Regulation |
| To: | Rolonda Jackson Office of Nuclear Reactor Regulation |
| References | |
| TASK-02-04, TASK-2-4, TASK-RR NUDOCS 7908210543 | |
| Download: ML19249A276 (4) | |
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WASHING TON, D. C. 20555 JJL 2 C G79 MEMORANDUM FOR:
Robert E. Jackson, Chief Geosciences Branch, DSS THRU:
Lyman W. Heller, Leader 9
Geotechnic.<1 Engineering Sectio Geosciences Branch, DSS FROM:
John T. Greeves, Geotechnical Engineer Geotechnical Engineering Section Geosciences Branch, DSS
SUBJECT:
SUMMARY
OF SITE VISIT AND LABORATORY INSPECTION FOR LACROSSE SEP REVIEW On July 9, 1979, Dr. W. Marcuson, WES, and I met with representatives of Dairyland Power Cooperative in Chicago to discuss the progress of the current soils testing program.
On the next day July 10, we visited the Lacrosse site and inspected the location of the recent borings and general site conditions.
The following is a summary of these activities and attached is a list of attendees.
Dr. Marshall Silve conducted a tour of the University of Illinois laboratory, explained the details and procedures being used in the current testing program and. illustrated initial results.
The following comments summarize our observations during our visit.
a) A minimum of nine stress - controlled cyclic triaxial tests on undisturbed samples are planned for three zones below the foundation level of the reactor foundation, b) Based on observation of sample specimens and laboratory handling procedures, the quality of the samples obtained from the field I
investigation and prepared for testing is expected to be very good, c) At the time of our visit three stress-controlled cyclic triaxial tests had been completed and data were available for inspection.
For these three tests the results show that the sand responds to cyclic loading similar to a medium dense sand with a gradual increase in strain level and pore pressure with increasing numbers of cycles.
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d) At the conclusion m the visit Dr. Marcuson and I suggested that l'
consideration be given to (1) adding a fourth zone of tests to represent the hydraulic fill material, (2) adding maximum and I
minimum density testing for comparison with materials documented in the technical journais and (3) obtain cyclic strength data for the full range of cycles (3 to 20) considered significant for this site.
On Tuesday July 10, Dr. Mysore Nataraja, project engineer for Dames and Moore, conducted a tour of the Lacrosse site.
The following comments summarize the observations made during this site visit.
a) An extra boring (DM-11) was added during the recent field investigation to provide representative data near the intake water crib house. We observed the location of all new borings the service water intake and discharge lines and the perimeter af safety related structures.
b) Copies of drawings and reports on foundation details maintained at the site were inspected and discussed.
No settlement re:ords for structures wgre available, but our inspection of the structures at the site and our discussions with site personnel did not reveal any indication of settlement problems.
c) At the conclusion of the site visit we met with Dames & Mccre.and Dairyland Power representatives to revic.. the results of our visit to the laboratory on July 9, to request that the safety classification of the service water line be clarified, noted that information on the natural slope conditions east of the site should be obtained, and l
also noted that the foundation. details for the diesel generator building are needed for our review.
In summary, the two day visit satisfied our need for an on site assessment of site conditions and an inspection of the quality of the samples and laboratcry testing procedures.
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John T. Greeves, Geotechnical Engineer Geotechnical Engineering Section Geosciences Branch Division of Systems Safety
Enclosure:
As stated cc: See next page h
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f R. E. Janson JUL 2 61979 cc:
w/ enclosure D. Eisenhut D. Crutchfield J. Knight R. Deni:;e J. Wetmore L. Heller L. Reiter J. Shea C. Hofmayer H. Levin J. Greeves W. liarcuson, WES E. Gallagher, Region III PDR L
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List of Attendees University of Ill. Laboratory Chicago, July 9, 1979 N. S. Nataraja Dames and Moore M. Silver Dames and Moore (Consultant)
W. Marcuson WES J. Greeves NRC E. Gallagher NRC - Region III La irosse Site July 10, 1979 N. S. Nataraja Dames and Moore R. Shimshak DPC J. Parkyn DPC W. Marcuson WES J. Greeves NRC m wS