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Assessment of public perception of radioactive waste management in Korea

Trone, Janis R.; Lee, Moo Y.

The essential characteristics of the issue of radioactive waste management can be conceptualized as complex, with a variety of facets and uncertainty. These characteristics tend to cause people to perceive the issue of radioactive waste management as a 'risk'. This study was initiated in response to a desire to understand the perceptions of risk that the Korean public holds towards radioactive waste and the relevant policies and policy-making processes. The study further attempts to identify the factors influencing risk perceptions and the relationships between risk perception and social acceptance.

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TYPE SAND Report YEAR 2011
OSTIDOI

Comparisons of release probabilities obtained in recent WIPP performance assessments

13th International High-Level Radioactive Waste Management Conference 2011, IHLRWMC 2011

Camphouse, Russell C.; Clayton, Daniel J.; Lee, Moo Y.

The U.S. Department of Energy has developed the Waste Isolation Pilot Plant in southeastern New Mexico for the geologic disposal of transuranic waste. Performance assessment is the analysis methodology used to demonstrate that WIPP radionuclide release probabilities fall below limits designated by the U.S. Environmental Protection Agency, ensuring the protection of the public and environment. The most recent WIPP PA demonstrates that cumulative releases continue to lie entirely below specified limits. Therefore, WIPP continues to be in compliance with containment requirements. Analysis of the results shows that total releases are dominated by radionuclide releases that could occur during an inadvertent penetration of the repository by a future drilling operation. The natural and engineered barrier systems of the WIPP provide robust and effective containment of transuranic waste even if the repository is penetrated by multiple borehole intrusions.

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TYPE Conference YEAR 2011
OSTIScopus

Crushed salt reconsolidation at elevated temperatures

44th US Rock Mechanics Symposium - 5th US/Canada Rock Mechanics Symposium

Clayton, Daniel J.; Lee, Moo Y.; Holcomb, David J.; Bronowski, David R.

There is a long history of testing crushed salt as backfill for the Waste Isolation Pilot Plant program, but testing was typically done at 100°C or less. Future applications may involve backfilling crushed salt around heat-generating waste packages, where near-field temperatures could reach 250°C or hotter. A series of experiments were conducted to investigate the effects of hydrostatic stress on run-of-mine salt at temperatures up to 250°C and pressures to 20 MPa. The results of these tests were compared with analogous modeling results. By comparing the modeling results at elevated temperatures to the experimental results, the adequacy of the current crushed salt reconsolidation model was evaluated. The model and experimental results both show an increase in the reconsolidation rate with temperature. The current crushed salt model predicts the experimental results well at a temperature of 100°C and matches the overall trends, but over-predicts the temperature dependence of the reconsolidation. Further development of the deformation mechanism activation energies would lead to a better prediction of the temperature dependence by the crushed salt reconsolidation model. Copyright 2010 ARMA, American Rock Mechanics Association.

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TYPE Conference YEAR 2010
OSTIOSTIScopusScopus

Crushed salt reconsolidation at elevated temperatures

Clayton, Daniel J.; Lee, Moo Y.; Holcomb, David J.; Bronowski, David R.

There is a long history of testing crushed salt as backfill for the Waste Isolation Pilot Plant program, but testing was typically done at 100 C or less. Future applications may involve backfilling crushed salt around heat-generating waste packages, where near-field temperatures could reach 250 C or hotter. A series of experiments were conducted to investigate the effects of hydrostatic stress on run-of-mine salt at temperatures up to 250 C and pressures to 20 MPa. The results of these tests were compared with analogous modeling results. By comparing the modeling results at elevated temperatures to the experimental results, the adequacy of the current crushed salt reconsolidation model was evaluated. The model and experimental results both show an increase in the reconsolidation rate with temperature. The current crushed salt model predicts the experimental results well at a temperature of 100 C and matches the overall trends, but over-predicts the temperature dependence of the reconsolidation. Further development of the deformation mechanism activation energies would lead to a better prediction of the temperature dependence by the crushed salt reconsolidation model.

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TYPE Conference YEAR 2010
OSTI
Results 51–75 of 100
Results 51–75 of 100