Multibarrier waste forms. Part III: Process considerations.

Technical Report · Mon Oct 01 04:00:00 EDT 1979

DOI:https://doi.org/10.2172/5767715· OSTI ID:5767715

Lokken, R O

The multibarrier concept for the solidification and storage of radioactive waste utilizes up to three barriers to isolate radionuclides from the environment: a solidified waste inner core, an impervious coating, and a metal matrix. The coating and metal matrix give the composite waste form enhanced inertness with improvements in thermal stability, mechanical strength, and leach resistance. Preliminary process flow rates and material costs were evaluated for four multibarrier waste forms with the process complexity increasing thusly: glass marbles, uncoated supercalcine, glass-coated supercalcine, and PyC/Al/sub 2/O/sub 3/-coated supercalcine. This report discusses the process variables and their effect on optimization of product quality, processing simplicity, and material cost. 11 figures, 2 tables. (DLC)

• Research Organization: Battelle Pacific Northwest Labs., Richland, WA (USA)
• DOE Contract Number: EY-76-C-06-1830
• OSTI ID: 5767715
• Report Number(s): PNL-2668-3
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON
CERAMICS
CHALCOGENIDES
COATINGS
COMPOSITE MATERIALS
DIAGRAMS
ELEMENTS
FLOWSHEETS
GLASS
MANAGEMENT
MATRIX MATERIALS
NONMETALS
OPTIMIZATION
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PROCESSING
PYROLYTIC CARBON
RADIOACTIVE WASTE PROCESSING
REACTOR MATERIALS
SOLIDIFICATION
WASTE MANAGEMENT
WASTE PROCESSING