Permeability of stemming materials for prompt gas sampling
The permeability and porosity of a suite of man-made granular aggregates and stemming materials currently in use at NTS was measured in 1-D loading as a function of stress. In all cases, the gas permeability was measured at 22 MPa after cycling up and down from 100 to 1200 MPa. Depending on stress and material, permeability decreased up to three orders of magnitude, porosity up to 63% and the sample compacted by as much as 35%. Steel ball bearings were found to retain the highest permeability of all the materials tested. The enhancement of prompt gas sampling through alternate stemming material in the column above the nuclear device is discussed.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5217353
- Report Number(s):
- UCRL-53257; ON: DE82012491; TRN: 82-016398
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
STEMMING MATERIALS
PERMEABILITY
POROSITY
BENCH-SCALE EXPERIMENTS
MECHANICAL TESTS
NEVADA TEST SITE
NUCLEAR EXPLOSIONS
STRESSES
EXPLOSIONS
MATERIALS
MATERIALS TESTING
NATIONAL ORGANIZATIONS
TESTING
US DOE
US ORGANIZATIONS
450200* - Military Technology
Weaponry
& National Defense- Nuclear Explosions & Explosives
STEMMING MATERIALS
PERMEABILITY
POROSITY
BENCH-SCALE EXPERIMENTS
MECHANICAL TESTS
NEVADA TEST SITE
NUCLEAR EXPLOSIONS
STRESSES
EXPLOSIONS
MATERIALS
MATERIALS TESTING
NATIONAL ORGANIZATIONS
TESTING
US DOE
US ORGANIZATIONS
450200* - Military Technology
Weaponry
& National Defense- Nuclear Explosions & Explosives