Interaction of waste package materials with simulated salt repository environments: Annual report, October 1986-September 1987
This progress report summarizes work on the interaction of waste package materials with simulated salt repository environments. Research focused on the mechanistic understanding of corrosion processes involving carbon steels in acid chloride solutions, a literature review of the solubility of selected compounds of several elements in simulated salt repository brines, and the development of a plan to investigate the mechanisms for mobilization and movement of water and pathways for the flow of brine in a bedded salt formation. A detailed literature search was performed to compile relevant corrosion data for carbon steels in anoxic acid chloride solutions and simulated salt repository brines at temperatures between /approximately/20 and 400/degree/C. An analytical model for general corrosion was developed to calculate the amount of penetration (i.e., thinning) as a function of time, temperature, and the pressure of corrosion product hydrogen that can build up during long-term exposure. The model was used to calculate the amount of corrosive penetration of a carbon steel container for three waste package configurations for emplacement time periods up to 1000 years. A literature review of solublity data and other related thermodynamic information was conducted for compounds of Sn, Pb, Sr, and Se from a list of 17 elements that form an important component of the waste. A methodology for investigating the principal transport processes and pathways for water movement in a bedded salt formation was developed, and laboratory studies to obtain more quantitative estimates of water movement in the repository were planned. 85 refs., 27 figs., 18 tabs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5208864
- Report Number(s):
- ANL-IWPM-4/87; ON: DE88008743
- Country of Publication:
- United States
- Language:
- English
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053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALLOYS
ANOXIA
BRINES
CARBON STEELS
CONTAINERS
CORROSIVE EFFECTS
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
FLOW RATE
GEOLOGIC DEPOSITS
GROUND WATER
HIGH-LEVEL RADIOACTIVE WASTES
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MANAGEMENT
MASS TRANSFER
MASS TRANSIT SYSTEMS
MATERIALS
MATHEMATICAL MODELS
OXYGEN COMPOUNDS
PROGRESS REPORT
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
REVIEWS
SALT DEPOSITS
SIMULATION
SOLUBILITY
STEELS
TIME DEPENDENCE
TRANSPORTATION SYSTEMS
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER