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Title: Drilling-induced borehole-wall damage at spent fuel test-climax

Technical Report ·
DOI:https://doi.org/10.2172/59268· OSTI ID:59268

Microcracks in a sample of quartz monzonite from the Spent Fuel Test-Climax were measured by means of a scanning electron microscope in order to estimate the background level of damage near the borehole-wall. It appears that the hammer-drilling operation used to create the borehole has caused some microfracturing in a region 10 to 30 mm wide around the borehole. Beyond 30 mm, the level of microfracturing cannot be distinguished from background.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
59268
Report Number(s):
UCID-19672; ON: DE83006417
Resource Relation:
Other Information: PBD: Dec 1982
Country of Publication:
United States
Language:
English