Thermal stress modeling of in situ vitrified barriers for hazardous waste containment

Conference · Sun Sep 01 00:00:00 EDT 1991

OSTI ID:6217853

Garnich, M R

Development of In Situ Vitrification technology has included the concept of subsurface barriers. Structural integrity of vitrified soil bodies is important to barrier performance. Analytical methods are under development for predicting thermal-structural performance during melt cooldown. A thermal modeling capability has been developed for predicting the cooling transient of subsurface molten masses using the finite element method. A computationally efficient instant freezing model'' was demonstrated to give qualitative agreement for predicted stresses with a more sophisticated creep model. A method for predicting stress relief due to cracking, as a preliminary step to predicting crack densities, has been demonstrated. 8 refs., 10 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6217853
• Report Number(s): PNL-SA-19347; CONF-910945-3; ON: DE92002984
• Resource Relation: Conference: Focus '91: nuclear waste packaging, Las Vegas, NV (United States), 29 Sep - 4 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
HAZARDOUS MATERIALS
CONTAINMENT
COOLING
CREEP
FINITE ELEMENT METHOD
IN-SITU PROCESSING
MATHEMATICAL MODELS
SOILS
THERMAL STRESSES
VITRIFICATION
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL SOLUTION
PROCESSING
STRESSES
052000* - Nuclear Fuels- Waste Management