(Radioactive waste immobilization)

Technical Report · Wed Oct 07 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/6775640· OSTI ID:6775640

Sams, T L

The traveler participated in a collaborative study of waste immobilization technology with scientists at the Centre d'Etudes Nucleaires de Saclay (CEN-S) in France. Efforts were focused on utilization of cements and technology currently used by CEN-S scientists to immobilize two low-level radioactive waste streams identified by scientists at Oak Ridge National Laboratory (ORNL). One waste stream contains typical decontamination waste (phosphate waste), and the other represents typical wastes currently found in the Melton Valley storage tanks at ORNL (nitrate waste). Formulation criteria for fluidity, structural durability, and retention of radionuclides were imposed on the immobilization study. Three types of French cement were evaluated for the nitrate waste, and four types of French cement were evaluated for the phosphate waste. Samples were prepared for durability and leachability testing for each of the waste streams. At the Centre d'Etudes Nucleaires de Fontenay-aux-Roses, the traveler discussed modeling long-term behavior of cement-based waste forms, chemistry of the waste form, and studies on radionuclide transport from waste forms.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6775640
• Report Number(s): ORNL/FTR-2708; ON: DE90012318
• 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
BUILDING MATERIALS
CEMENTS
CLEANING
CONTAINERS
DECONTAMINATION
DISSOLUTION
ENVIRONMENTAL TRANSPORT
EUROPE
FRANCE
LEACHING
LIQUID WASTES
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MASS TRANSFER
MATERIALS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTE STORAGE
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
SEPARATION PROCESSES
SLUDGES
SOLIDIFICATION
STORAGE
TANKS
TESTING
TRAVEL
WASTE FORMS
WASTE MANAGEMENT
WASTE STORAGE
WASTES
WESTERN EUROPE