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Calculations supporting evaluation of potential environmental standards for Yucca Mountain

Description: The Energy Policy Act of 1992, Section 801 (US Congress, 1992) provides for the US Environmental Protection Agency (EPA) to contract the National Academy of Sciences (NAS) to conduct a study and provide findings and recommendations on reasonable standards for the disposal of high-level wastes at the Yucca Mountain site. The NAS study is to provide findings and recommendations which include, among other things, whether a health-based standard based on dose to individual members of the public fro… more
Date: April 1, 1994
Creator: Duguid, J. O.; Andrews, R. W.; Brandstetter, E.; Dale, T. F. & Reeves, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NNWSI [Nevada Nuclear Waste Storage Investigations] waste form testing at Argonne National Laboratory; Semiannual report, January--June 1988

Description: The Chemical Technology Division of Argonne National Laboratory is performing experiments in support of the waste package development of the Yucca Mountain Project (formerly the Nevada Nuclear Waste Storage Investigations Project). Experiments in progress include (1) the development and performance of a durability test in unsaturated conditions, (2) studies of waste form behavior in an irradiated atmosphere, (3) studies of behavior in water vapor, and (4) studies of naturally occurring glasses … more
Date: April 1990
Creator: Bates, J. K.; Gerding, T. J.; Ebert, W. L.; Mazer, J. J. & Biwer, B. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gaseous release of carbon-14: Why the high level waste regulations should be changed

Description: The high-level nuclear waste regulations pertaining to gaseous release of carbon-14 from a repository should be changed to allow greater release, for several reasons. Some of them are as follows. First, the total amount of carbon-14 that would be placed in a repository is small compared to that produced naturally in the atmosphere by cosmic rays. Second, the dose that would result to an individual from total release of repository carbon-14 would be very small compared to that from natural radia… more
Date: April 1, 1991
Creator: Van Konynenburg, R.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Constraining local 3-D models of the saturated-zone, Yucca Mountain, Nevada

Description: A qualitative three-dimensional analysis of the saturated zone flow system was performed for a 8 km {times} 8 km region including the potential Yucca Mountain repository site. Certain recognized geologic features of unknown hydraulic properties were introduced to assess the general response of the flow field to these features. Two of these features, the Solitario Canyon fault and the proposed fault in Drill Hole Wash, appear to constrain flow and allow calibration.
Date: April 1, 1994
Creator: Barr, G.E. & Shannon, S.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effects of heterogeneity on actinide diffusion rates in tuffaceous rock

Description: The pore structure and mineralogy of Topopah Spring Tuff are heterogeneous on scales less than one cm. This heterogeneity creates spatial variation in transport rates for aqueous actinide species both on the scale of tenths of microns and the scale of mm. The volumetric distribution of fluid paths having very different tortuosity, and potentially differing surface mineralogy and sorptive properties, must be considered in order to provide realistic predictions of transport rates. In addition, si… more
Date: April 1, 1991
Creator: Buchholtz ten Brink, M.; Phinney, D. L. & Smith, D. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MISTY ECHO tunnel dynamics experiment data report; Volume 2, Appendices: Yucca Mountain Site Characterization Project

Description: Tunnel damage resulting from seismic loading is an important issue for the Yucca Mountain nuclear waste repository. The tunnel dynamics experiment was designed to obtain and document ground motions, permanent displacements, observable changes in fracture patterns, and visible damage at ground motion levels of interest to the Yucca Mountain Project. Even though the maximum free-field loading on this tunnel was 28 g, the damage observed was minor. Fielding details, data obtained, and supporting d… more
Date: April 1, 1992
Creator: Phillips, J. S.; Luke, B. A.; Long, J. W. & Lee, J. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

AREST: The next generation

Description: Simple mass transport models using constant boundary conditions at the waste form surface and at the host rock boundary do not always result in realistic predictions of the performance of an underground repository for the disposal of high-level radioactive waste. What is needed is a model that couples the important processes that can not be modeled independently, including (1) thermal modeling, (2) geochemical modeling, (3) containment degradation, (4) waste form dissolution, and (5) radionucli… more
Date: April 1, 1993
Creator: Engel, D. W.; McGrail, B. P.; Eslinger, P. W. & Altenhofen, M. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Requirements for controlling a repository`s releases of carbon-14 dioxide; the high costs and negligible benefits

Description: A repository excavated within the unsaturated zone may release carbon (C)-14 dioxide in amounts that exceed limits imposed by the Environmental Protection Agency (EPA) and the Nuclear Regulatory Commission (NRC). The release would not threaten the general population, but may expose some hypothetical maximally exposed individual to 0.0005 millirems/year. Yet a repository`s releases of C-14 dioxide are strictly regulated, perhaps unintentionally. The EPA and NRC regulations could force the Depart… more
Date: April 1, 1990
Creator: Park, U Sun & Pflum, C.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Paleoclimate validation of a numerical climate model

Description: An analysis planned to validate regional climate model results for a past climate state at Yucca Mountain, Nevada, against paleoclimate evidence for the period is described. This analysis, which will use the GENESIS model of global climate nested with the RegCM2 regional climate model, is part of a larger study for DOE`s Yucca Mountain Site Characterization Project that is evaluating the impacts of long term future climate change on performance of the potential high level nuclear waste reposito… more
Date: April 1, 1994
Creator: Schelling, F. J.; Church, H. W.; Zak, B. D. & Thompson, S. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A strategy to seal exploratory boreholes in unsaturated tuff; Yucca Mountain Site Characterization Project

Description: This report presents a strategy for sealing exploratory boreholes associated with the Yucca Mountain Site Characterization Project. Over 500 existing and proposed boreholes have been considered in the development of this strategy, ranging from shallow (penetrating into alluvium only) to deep (penetrating into the groundwater table). Among the comprehensive list of recommendations are the following: Those boreholes within the potential repository boundary and penetrating through the potential re… more
Date: April 1, 1994
Creator: Fernandez, J. A.; Case, J. B.; Givens, C. A. & Carney, B. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Quality Council in the scientific arena

Description: Communication between 12 separate Los Alamos National Laboratory (Los Alamos) research-and-development organizations (9 located in Los Alamos, NM, and 3 located in different areas of the United States) performing work on Los Alamos Yucca Mountain Site Characterization Project (YW or the Project) have improved significantly since the Los Alamos YNT Quality. Council was tonned in 1991. The Quality Council has also been instrumental in improving communications between Los Alamos scientists and the… more
Date: April 1, 1994
Creator: Day, J. L.; Gillespie, P. F. & Bolivar, S. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The International Stripa Project: Technology transfer from cooperation in scientific and technological research on nuclear waste disposal

Description: The Nuclear Energy Agency of the organization for Economic Cooperation and Development (OECD/NEA) sponsors the International Stripa Project. The objectives of the Stripa Project are to develop techniques for characterizing sites located deep in rock formations that are potentially suitable for the geologic disposal of high-level radioactive wastes and to evaluate particular engineering design considerations that could enhance the long-term safety of a high-level radioactive waste repository in … more
Date: April 1, 1990
Creator: Levich, R. A.; Patera, E. S.; Ferrigan, P. M. & Wilkey, P. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Code requirements for concrete repository and processing facilities

Description: The design and construction of facilities and structures for the processing and safe long-term storage of low- and high-level radioactive wastes will likely employ structural concrete. This concrete will be used for many purposes including structural support, shielding, and environmental protection. At the present time, there are no design costs, standards or guidelines for repositories, waste containers, or processing facilities. Recently, the design and construction guidelines contained in Am… more
Date: April 1, 1993
Creator: Hookham, C. J. & Palaniswamy, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

MISTY ECHO Tunnel Dynamics Experiment--Data report: Volume 1; Yucca Mountain Site Characterization Project

Description: Tunnel damage resulting from seismic loading is an important issue for the Yucca Mountain nuclear waste repository. The tunnel dynamics experiment was designed to obtain and document ground motions, permanent displacements, observable changes in fracture patterns, and visible damage at ground motion levels of interest to the Yucca Mountain Project. Even though the maximum free-field loading on this tunnel was 28 g, the damage observed was minor. Fielding details, data obtained, and supporting d… more
Date: April 1, 1992
Creator: Phillips, J. S.; Luke, B. A.; Long, J. W. & Lee, J. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary near-field environment report; Volume 1, Technical bases for EBS design

Description: The United States Department of Energy (DOE) is investigating the suitability of Yucca Mountain as a potential site for the nation`s first high-level nuclear waste repository. The site is located about 120 km northwest of Las Vegas, Nevada, in an area of uninhabited desert (Fig. 1). Lawrence Livermore National Laboratory (LLNL) is a Yucca Mountain Site Characterization Project (YMP) participant and is responsible for the development of waste package (WP) and engineered barrier system (EBS) desi… more
Date: April 1, 1993
Creator: Wilder, D. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Approach to developing a ground-motion design basis for facilities important to safety at Yucca Mountain

Description: The Department of Energy has proposed a methodology for developing a ground-motion design basis for prospective facilities at Yucca Mountain that are important to safety. The methodology utilizes a quasi-deterministic construct that is designed to provide a conservative, robust, and reproducible estimate of ground motion that has a one-in-ten chance of occurring during the preclosure period. This estimate is intended to define a ground-motion level for which the seismic design would ensure mini… more
Date: April 1, 1990
Creator: King, J. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Public involvement in radioactive waste management decisions

Description: Current repository siting efforts focus on Yucca Mountain, Nevada, where DOE`s Office of Civilian Radioactive Waste Management (OCRWM) is conducting exploratory studies to determine if the site is suitable. The state of Nevada has resisted these efforts: it has denied permits, brought suit against DOE, and publicly denounced the federal government`s decision to study Yucca Mountain. The state`s opposition reflects public opinion in Nevada, and has considerably slowed DOE`s progress in studying … more
Date: April 1, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A waste package strategy for regulatory compliance

Description: This paper summarizes the strategy given in the Site Characterization Plan for demonstrating compliance with the post closure performance objectives for the waste package and the Engineered Barrier System contained in the Code of Federal Regulations. The strategy consists of the development of a conservative waste package design that will meet the regulatory requirements with sufficient margin for uncertainty using a multi-barrier approach that takes advantage of the unsaturated nature of the Y… more
Date: April 1, 1990
Creator: Stahl, D. & Cloninger, M.O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Selenite transport in unsaturated tuff from Yucca Mountain

Description: Direct measurements of unsaturated selenite retardation coefficients and unsaturated hydraulic conductivity were obtained on two tuff samples from Yucca Mountain using the UFA{trademark} technology. The retardation factor for the selenite species was only 2.5 in both Yucca Mountain vitric member at 62.6% saturation and zeolitized nonwelded tuff from G-tunnel at 52.8% saturation with respect to J-13 well water from the Nevada Test Site contaminated with selenium at 1.31 mg/l (ppm). In batch test… more
Date: April 1, 1994
Creator: Conca, J.L. & Triay, I.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Spent fuel waste form characteristics: Grain and fragment size statistical dependence for dissolution response

Description: The Yucca Mountain Project of the US Department of Energy is investigating the suitability of the unsaturated zone at Yucca Mountain, NV, for a high-level nuclear waste repository. All of the nuclear waste will be enclosed in a container package. Most of the nuclear waste will be in the form of fractured UO{sub 2} spent fuel pellets in Zircaloy-clad rods from electric power reactors. If failure of both the container and its enclosed clad rods occurs, then the fragments of the fractured UO{sub 2… more
Date: April 1, 1991
Creator: Stout, R. B.; Leider, H.; Weed, H.; Nguyen, S.; McKenzie, W.; Prussin, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The effect of rock fragments on the hydraulic properties of soils

Description: Many soils contain rock fragments the sizes of which are much larger than the average pore size of the sieved soil. Due to the fact that these fragments are often fairly large in relation to the soil testing apparatus, it is common to remove them before performing hydrologic tests on the soil. The question then arises as to whether or not there is a simple way to correct the laboratory-measured values to account for the fragments, so as to arrive at property values that can apply to the soil in… more
Date: April 1, 1995
Creator: Zimmerman, R.W. & Bodvarsson, G.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Total-system performance assessment for Yucca Mountain - SNL second iteration (TSPA-1993); Volume 1

Description: Sandia National Laboratories has completed the second iteration of the periodic total-system performance assessments (TSPA-93) for the Yucca Mountain Site Characterization Project (YMP). These analyses estimate the future behavior of a potential repository for high-level nuclear waste at the Yucca Mountain, Nevada, site under consideration by the Department of Energy. TSPA-93 builds upon previous efforts by emphasizing YMP concerns relating to site characterization, design, and regulatory compl… more
Date: April 1, 1994
Creator: Wilson, M. L.; Gauthier, J. H.; Barnard, R. W.; Barr, G. E.; Dockery, H. A.; Dunn, E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fabrication and closure development of nuclear waste containers for storage at the Yucca Mountain, Nevada repository

Description: US Congress and the President have determined that the Yucca Mountain site in Nevada is to be characterized to determine its suitability for construction of the first US high-level nuclear waste repository. Work in connection with this site is carried out within the Yucca Mountain Project (YMP). Lawrence Livermore National Laboratory (LLNL) has the responsibility for designing, developing, and projecting the performance of the waste package for the permanent storage of high-level nuclear waste.… more
Date: April 1, 1989
Creator: Russell, E. W.; Nelson, T. A.; Domian, H. A.; LaCount, D. F.; Robitz, E. S. & Stein, K. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Actinide transport in Topopah Spring Tuff: Pore size, particle size, and diffusion

Description: Diffusive transport rates for aqueous species in a porous medium are a function of sorption, molecular diffusion, and sample tortuosity. With heterogeneous natural samples, an understanding of the effect of multiple transport paths and sorption mechanisms is particularly important since a small amount of radioisotope traveling via a faster-than-anticipated transport path may invalidate the predictions of transport codes which assume average behavior. Static-diffusion experiments using aqueous {… more
Date: April 1, 1991
Creator: Buchholtz ten Brink, M.; Phinney, D. L. & Smith, D. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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