Long-term performance of materials used for high-level waste packaging. Annual report, year three, April 1984-April 1985. Volume 4

Technical Report · Mon Jul 01 04:00:00 EDT 1985

OSTI ID:5386743

Stahl, D; Miller, N E ^[1]

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1. comps.

As part of the Nuclear Regulatory Commission's requirement to assess the Department of Energy's application to construct geologic repositories for high-level radioactive waste, Battelle's Columbus Laboratories is investigating the long-term performance of materials used for high-level waste packages. Waste form experimentation has focused on borosilicate glass, using the reference composition MCC 76-68. An experiment investigated the influence of continuous contact between the glass specimen and the leachate on the results of corrosion studies. It was found that precipitates formed during cooling can affect the results. Other experiments evaluated the influence of crystallization on glass waste-form performance and the influence of organic acid on the waste-form and radionuclide mobility in groundwater. Models were used to analyze glass dissolution, including the reprecipitation of dissolved glass species. The effect of groundwater species on the electrochemistry of steels is being analyzed to evaluate susceptibility to pitting and stress-corrosion cracking. Species identified as potential cracking agents are being investigated by slow strain rate experiments. Hydrogen embrittlement studies of steel showed annealed cast steel to be more sensitive to embrittlement. Realistic general and pitting corrosion models are being developed, based on known principles of mass transport and radiolytic production. Mechanical and water-chemistry-related stresses which influence mechanical degradation were evaluated. Groundwater-radiolysis and water-chemistry studies are continuing as part of the integrated system performance task. 78 refs., 83 figs., 41 tabs.

• Research Organization: Battelle Columbus Labs., OH (USA)
• OSTI ID: 5386743
• Report Number(s): NUREG/CR-3900-Vol.4; BMI-2127-Vol.4; ON: TI85902045
• Country of Publication: United States
• Language: English

Related Subjects

052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
360604 -- Materials-- Corrosion
Erosion
& Degradation
ALLOYS
BASALT
BOROSILICATE GLASS
CARBON STEELS
CHEMICAL COMPOSITION
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CORROSION
CORROSIVE EFFECTS
CRYSTALLIZATION
DATA
DECOMPOSITION
DISPERSIONS
DISSOLUTION
ELECTROCHEMISTRY
ELECTRON MICROSCOPY
ELEMENTS
EMBRITTLEMENT
ENVIRONMENTAL TRANSPORT
EXPERIMENTAL DATA
GLASS
GROUND WATER
HALIDES
HALOGEN COMPOUNDS
HIGH-LEVEL RADIOACTIVE WASTES
HYDROGEN COMPOUNDS
HYDROGEN EMBRITTLEMENT
IGNEOUS ROCKS
INFORMATION
IRON
IRON ALLOYS
IRON BASE ALLOYS
IRON CHLORIDES
IRON COMPOUNDS
LEACHATES
LEACHING
MANAGEMENT
MASS TRANSFER
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS
MICROSCOPY
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PACKAGING
PHASE TRANSFORMATIONS
PITTING CORROSION
QUALITY ASSURANCE
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIOLYSIS
RADIONUCLIDE MIGRATION
RESEARCH PROGRAMS
ROCKS
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SOLUTIONS
STEELS
STRESS CORROSION
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VOLCANIC ROCKS
WASTE DISPOSAL
WASTE FORMS
WASTE MANAGEMENT
WASTES
WATER
WATER CHEMISTRY