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State-of-the-art for evaluating the potential impact of tectonism and volcanism on a radioactive waste repository
Most estimates of the time required for safe isolation of radioactive wastes from the biosphere range from 100,000 to 1,000,000 years. For such long time spans, it is necessary to assess the potential effects of geologic processes such as volcanism and tectonic activity on the integrity of geologic repositories. Predictions of geologic phenomena can be based on probabilistic models, which assume a random distribution of events. The necessary historic and geologic records are rarely available to provide an adequate data base for such predictions. The observed distribution of volcanic and tectonic activity is not random, and appears to be controlled by extremely complex deterministic processes. The advent of global plate tectonic theory in the past two decades has been a giant step toward understanding these processes. At each potential repository site, volcanic and tectonic processes should be evaluated to provide the most thorough possible understanding of those deterministic processes. Based on this knowledge, judgements will have to be made as to whether or not the volcanic and tectonic processes pose unacceptable risk to the integrity of the repository. This report describes the potential hazards associated with volcanism and tectonism, and the means for evaluating these processes.
Date:
July 16, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
State-of-the-art for evaluating the potential impact of flooding on a radioactive waste repository
This report is a review of the state-of-the-art for evaluating the potential impact of flooding on a deep radioactive-waste repository, namely, for predicting the future occurrence of catastrophic flooding and for estimating the effect of such flooding on waste containment characteristics. Several detrimental effects are identified: flooding can increase groundwater seepage velocities through a repository within the framework of the existing hydrologic system and thus increase the rate of radioactive-waste leakage to the biosphere; flooding may alter repository hydrology by reversing flow gradients, relocating sources of groundwater recharge and discharge, or shortening seepage paths, thereby producing unpredictable leakage; saturation of a vadose-zone repository during flooding can increase groundwater seepage velocities by several orders of magnitude; and flooding can damage repository-media containment properties by inducing seismic or chemical instability or increasing fracture permeability in relatively shallow repository rock as a result of redistributing in-situ stresses. Short-term flooding frequency and magnitude can be predicted statistically by analyzing historical records of flooding. However, long-term flooding events that could damage a permanent repository cannot be predicted with confidence because the geologic record is neither unique nor sufficienly complete for statistical analysis. It is more important to identify parameters characterizing containment properties (such as permeability, …
Date:
July 16, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
State-of-the-art for evaluating the potential effects of erosion and deposition on a radioactive waste repository. Final report
The potential impact of future geologic processes on the integrity of a deep, high-level radioactive-waste repository is evaluated. The following study identifies the potential consequences of surface erosion and deposition on sub-surface repository containment characteristics and assesses the ability to measure and predict quantitatively the rates and corresponding extent of these processes in the long term. Numerous studies of the magnitudes and rates of surficial erosion and deposition that have been used to determine the minimum allowable depth for a geologic repository (300 m - NRC Code of Federal Regulations, Part 60.122, Draft 10) are cited in this report. Measurement and interpretation of potential rates and extent of surficial processes in these studies involved considerable uncertainty, and the implications of this uncertainty on presently proposed repository siting criteria are addressed herein. Important concepts that should be considered when developing siting criteria to protect against deleterious effects arising from future erosion or deposition are highlighted. Erosion agents that could affect deep repositories are distinguished in this report so that their individual and combined impacts may be examined. This approach is recommended when evaluating potential repository sites in diverse environments that are susceptible to different agents of erosion. In contrast, agents of …
Date:
July 16, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
RODCON: a finite difference heat conduction computer code in cylindrical coordinates
RODCON, a finite difference computer code, was developed to calculate the internal temperature distribution of the fuel rod simulator (FRS) for the Core Flow Test Loop (CFTL). RODCON solves the implicit, time-dependent forward-differencing heat transfer equation in 2-dimensional (Rtheta) cylindrical coordinates at an axial plane with user specified radial material zones and surface conditions at the FRS periphery. Symmetry of the boundary conditions of coolant bulk temperatures and film coefficients at the FRS periphery is not necessary.
Date:
September 16, 1980
Creator:
Conklin, J. C.
Object Type:
Article
System:
The UNT Digital Library
Recommended new criteria for the selection of nuclear waste repository sites in Columbia River basalt and US Gulf Coast domed salt
Screening criteria and specifications are recommended to aid in the evaluation of sites proposed for nuclear waste disposal in basalt and domed salt. The recommended new criteria proposed in this report are intended to supplement existing repository-related criteria for nuclear waste disposal. The existing criteria are contained in 10 CFR 60 sections which define siting criteria of the Nuclear Regulatory Commission (NRC), and ONWI 33(2) which defines siting criteria of the Office of Nuclear Waste Isolation (ONWI) for the Department of Energy. The specifications are conditions or parameter values that the authors recommend be applied in site acceptance evaluations. The siting concerns covered in this report include repository depth, host rock extent, seismic setting, structural and tectonic conditions, groundwater and rock geochemistry, volcanism, surface and subsurface hydrology, and socioeconomic issues, such as natural resources, land use, and population distribution.
Date:
June 16, 1980
Creator:
Steinborn, T.L.; Wagoner, J.L.; Qualheim, B.; Fitts, C.R.; Stetkar, R.E. & Turnbull, R.W.
Object Type:
Report
System:
The UNT Digital Library
New concept for a high-power beam dump
A new concept for a dump for the ion and neutral beams used in the controlled nuclear fusion program uses thin sheets of a refractory metal such as tungsten formed into troughs having semi-circular cross sections. High-velocity water flowing circumferentially removes heat by subcooled nucleate boiling. Possible advantages are modular construction, lower water-pumping power, and a lower pressure drop than in conventional beam dumps. An example design calculation is shown for a dump capable of absorbing an incident flux of 10 kW/cm/sup 2/.
Date:
April 16, 1980
Creator:
Moir, R.W. & Taylor, C.E.
Object Type:
Article
System:
The UNT Digital Library
Waste form dissolution in bedded salt
A model was devised for waste dissolution in bedded salt, a hydrologically tight medium. For a typical Spent UnReprocessed Fuel (SURF) emplacement, the dissolution rate wll be diffusion limited and will rise to a steady state value after t/sub eq/ approx. = 250 (1+(1-epsilon/sub 0/) K/sub D//epsilon/sub 0/) (years) epsilon/sub 0/ is the overpack porosity and K/sub d/ is the overpack sorption coefficient. The steady state dissolution rate itself is dominated by the solubility of UO/sub 2/. Steady state rates between 5 x 10/sup -5/ and .5 (g/year) are achievable by SURF emplacements in bedded salt without overpack, and rates between 5 x 10/sup -7/ and 5 x 10/sup -3/ (g/year) with an overpack having porosity of 10/sup -2/.
Date:
September 16, 1980
Creator:
Kaufman, A. M.
Object Type:
Report
System:
The UNT Digital Library
Radioiostope studies utilizing a low level whole body counter and clinical application of activation analysis. Progress report
The main emphasis of these studies is the development of methods (hardware and software) for the quantitation of body and specific organ burdens of radioactivity. Current work is directed toward the evaluation of radiation dose distributions in human beings from new radioactive tracers and new procedures used in nuclear medicine. Dosimetry and clinical studies will be carried out on patients using new radiopharmaceuticals where dosimetry data are lacking. Future efforts will be directed toward the development of systems that will facilitate the collection of dosimetry data using less specialized facilities. The availability of instrumentation and analytic techniques that provide clinical images as well as dosimetry data should enhance the rate of collection of data on human exposures in medicine and assist in the optimization of diagnostic strategies. In parallel with these efforts, we are developing a new computer assisted technique for diagnostic decision making. The basic aim is to utilize efficiently all the available data to maximize information gain while minimizing cost factors.
Date:
January 16, 1980
Creator:
Brill, A. B. & Price, R. R.
Object Type:
Report
System:
The UNT Digital Library
Management of solid waste
Compliance with the latest regulatory requirements addressing disposal of radioactive, hazardous, and sanitary solid waste requires the application of numerous qualitative and quantitative criteria in the selection, design, and operation of solid waste management facilities. Due to the state of flux of these regulatory requirements from EPA and NRC, several waste management options were identified as being applicable to the management of the various types of solid waste. This paper highlights the current regulatory constraints and the design and operational requirements for construction of both storage and disposal facilities for use in management of DOE-ORO solid waste. Capital and operational costs are included for both disposal and storage options.
Date:
April 16, 1980
Creator:
Thompson, W.T. & Stinton, L.H.
Object Type:
Article
System:
The UNT Digital Library
Brief description of research papers accepted for publication during 1979. Annual report
Brief descriptions of research papers in radiobiology, biochemistry, metabolism, and biophysics published during 1979 are presented. The research was conducted by investigators in the Dept. of Radiation Biology and Biophysics. (ACR)
Date:
June 16, 1980
Creator:
Nash, D.B
Object Type:
Report
System:
The UNT Digital Library
Progress report for 1979-1980. [Duke Univ. , 1979-1980]
This basically administrative report describes research in the following areas: ..pi..-neon interactions at 200 GeV; direct ..gamma.. and e/sup +/e/sup -/ pair production; studies of photon production in 16-GeV/c ..pi../sup +/-p interactions; ..gamma..-p interactions at 20 GeV; and computer and hardware development. References are given to published work. An expenditure statement is included. (RWR)
Date:
September 16, 1980
Creator:
Walker, W. D.
Object Type:
Report
System:
The UNT Digital Library
H-coal fluid dynamics. Final report, August 1, 1977-December 31, 1979
This report presents the results of work aimed at understanding the hydrodynamic behavior of the H-Coal reactor. A summary of the literature search related to the fluid dynamic behavior of gas/liquid/solid systems has been presented. Design details of a cold flow unit were discussed. The process design of this cold flow model followed practices established by HRI in their process development unit. The cold fow unit has been used to conduct experiments with nitrogen, kerosene, or kerosene/coal char slurries, and HDS catalyst, which at room temperature have properties similar to those existing in the H-Coal reactor. Mineral oil, a high-viscosity liquid, was also used. The volume fractions occupied by gas/liquid slurries and catalyst particles were determined by several experimental techniques. The use of a mini-computer for data collection and calculation has greatly accelerated the analysis and reporting of data. Data on nitrogen/kerosene/HDS catalyst and coal char fines are presented in this paper. Correlations identified in the literature search were utilized to analyze the data. From this analysis it became evident that the Richardson-Zaki correlation describes the effect of slurry flow rate on catalyst expansion. Three-phase fluidization data were analyzed with two models.
Date:
April 16, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0053.0591]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Three cars reportedly were involved in a pre-dawn traffic accident downtown in which this truck crashed into a car repair shop door."
Date:
October 16, 1980
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0114.0020]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Cathy Buckwald (language arts specialist)."
Date:
April 16, 1980
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0118.0178]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 16, 1980
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0074.0930]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "In the heat of action, Pirate player Matt McLean is pressed by two Knight roundballers."
Date:
January 16, 1980
Creator:
Tullous, Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0110.0203]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "David Brown, Harzfeld's Fashion Week guest, shows off one of his creations."
Date:
September 16, 1980
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0093]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
September 16, 1980
Creator:
Grier, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0084]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The victorious Democratic Senate nominee, Andy Coats, greets supporters."
Date:
September 16, 1980
Creator:
Grier, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0089]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
September 16, 1980
Creator:
Tullous, Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0181]
Photograph used for a story in the Oklahoma Times newspaper.
Date:
July 16, 1980
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0687]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sioux medicine man Leonard Crowdog presents his credentials to Oklahoma County Sheriff Gene Wells in Wells' office Wednesday prior to performing a religious ceremony in the jail."
Date:
January 16, 1980
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0685]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Native American Church spiritual leader, Leonard Crowdog, left, leaves sheriff's office with attorney John T. Hall and activist Frances Wise."
Date:
January 16, 1980
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0118]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "The picture at right shows how it looks now after its destruction last week."
Date:
December 16, 1980
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History