skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermal Testing of Waste Packages for a Storage Environment.

Abstract

Abstract not provided.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1395428
Report Number(s):
SAND2016-9379C
647566
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the PATRAM 2016 held September 18-23, 2016 in Kobe, Japan.
Country of Publication:
United States
Language:
English

Citation Formats

Lopez, Carlos, Figueroa, Victor G., Gill, Walter, Ammerman, Douglas J., Nelson, Robert, and O'Neil, James E.. Thermal Testing of Waste Packages for a Storage Environment.. United States: N. p., 2016. Web.
Lopez, Carlos, Figueroa, Victor G., Gill, Walter, Ammerman, Douglas J., Nelson, Robert, & O'Neil, James E.. Thermal Testing of Waste Packages for a Storage Environment.. United States.
Lopez, Carlos, Figueroa, Victor G., Gill, Walter, Ammerman, Douglas J., Nelson, Robert, and O'Neil, James E.. 2016. "Thermal Testing of Waste Packages for a Storage Environment.". United States. doi:. https://www.osti.gov/servlets/purl/1395428.
@article{osti_1395428,
title = {Thermal Testing of Waste Packages for a Storage Environment.},
author = {Lopez, Carlos and Figueroa, Victor G. and Gill, Walter and Ammerman, Douglas J. and Nelson, Robert and O'Neil, James E.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 9
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Abstract not provided.
  • Evaluation of the post-emplacement environment around high level radioactive waste containers is required by federal regulations. The information derived from this evaluation will be used to determine the service performance of the waste containers, the chemical and hydrological conditions that may influence radionuclide release and transport if containers are breached, and retrievability of the waste containers prior to closure of the repository. Laboratory studies, numerical simulations, and field experiments and tests are used to provide data necessary for this evaluation. Results obtained to date demonstrate that the post-emplacement environment in the welded tuff at Yucca Mountain, Nevada maintains relatively benignmore » chemical features (i.e., near neutral pH, low concentrations of dissolved species) for most scenarios. The hydrological environment appears to be one of low flow volume and rates for the expected condition of an unsaturated medium. Emplacement borehole stability will be a function of fracture density and orientation, which may be influenced by microcrack development. Field studies and numerical simulations are in progress that will extend the results of laboratory studies to long time periods. The extent to which chemical, hydrological and mechanical processes can be adequately coupled through numerical simulations remains a matter of concern. 18 refs., 4 figs., 1 tab.« less
  • Evaluation of the post-emplacement environment around high-level radioactive waste containers is required by federal regulations. The information derived from this evaluation will be used to determine the service performance of the waste containers, the chemical and hydrological conditions that may influence radionuclide release and transport if containers are breached, and retrievability of the waste containers prior to closure of the repository. Laboratory studies, numerical simulations, and field experiments and tests are used to provide data necessary for this evaluation. Results obtained to date demonstrate that the post-emplacement environment in the welded tuff at Yucca Mountain, Nevada maintains relatively benign chemicalmore » features (i.e., near neutral pH, low concentrations of dissolved species) for most scenarios. The hydrological environment appears to be one of low flow volume and rates for the expected condition of an unsaturated medium. Emplacement borehole stability will be a function of fracture density and orientation, which may be influenced by microcrack development. Field studies and numerical simulations are in progress that will extend the results of laboratory studies to long time periods. The extent to which chemical, hydrological and mechanical processes can be adequately coupled through numerical simulations remains a matter of concern.« less
  • This paper discusses results of recent efforts to define the very near-field (within approximately 2 m) environmental conditions to which waste packages will be exposed in a salt repository. These conditions must be considered in the experimental design for waste package materials testing, which includes corrosion of barrier materials and leaching of waste forms. Site-specific brine compositions have been determined, and standard brine compositions have been selected for testing purposes. Actual brine compositions will vary depending on origin, temperature, irradiation history, and contact with irradiated rock salt. Results of irradiating rock salt, synthetic brines, rock salt/brine mixtures, and reactions ofmore » irradiated rock salt with brine solutions are reported. 38 references, 3 figures, 2 tables.« less