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Fast Shutdown System tests in the Georgia Tech Research Reactor (open access)

Fast Shutdown System tests in the Georgia Tech Research Reactor

The Fast Shutdown System (FSS) is a new safety system design concept being considered for in installation in the Savannah River (SRS) production reactors. This system is expected to mitigate the consequences of a Design Basis Loss of Coolant Accident, and therefore allow higher operational power levels. A test of this system in the Georgia Tech Research Reactor is proposed to demonstrate the efficacy of this concept. Three tests will be conducted at full power (5MW) and one at low power (100kw). Two full power tests will be conducted with the FSS rod backfilled with one (1) atmosphere of He-4, and one with the rod evacuated. The low power conducted with the FSS rod evacuated. Neutron flux and pressure data will be collected with an independent data acquisition system (DAS). Safety issues associated with the performance of the Fast Shutdown System experiments are addressed in this report. The credible accident scenarios were analyzed using worst case scenarios to demonstrate that no significant nuclear or personnel safety hazards would result from the performance of the proposed experiments.
Date: March 16, 1990
Creator: Wallace, J.M.
Object Type: Report
System: The UNT Digital Library
The structure and properties of grain boundaries in B2 ordered alloys (open access)

The structure and properties of grain boundaries in B2 ordered alloys

This report covers the period from April 1, 1989 to March 30, 1990. During this period further extrusions of fine-grained alloys of FeAl and NiAl with different aluminum contents were produced. Thus far, researchers have (1) completed room temperature mechanical testing which shows that the yield strength, {sigma}{sub y}, of FeAl shows a minimum near Fe-45Al while that for NiAl increases with increasing (nickel-rich) deviation from stoichiometry; (2) showed that the grain boundary strengthening parameter, k, in the Hall-Petch relationship, {sigma}{sub y} = {sigma}{sub 0} + k d{sup {minus}{1/2}} (where {sigma}{sub 0} is the lattice resistance and d the grain size), in FeAl shows a minimum at Fe-45Al whilst in NiAl it decreases with increasing deviation from stoichiometry; (3) studied grain boundary chemistry in near-stoichiometric NiAl and FeAl using scanning Auger electron spectroscopy at Oak Ridge National Laboratory, with the aid of Mr. R.A. Padgett, Jr.; studied grain boundary chemistry using EDS and Z-contrast imaging on field emission gun high resolution scanning transmission electron microscopes; (5) continued in-situ straining experiments in the transmission electron microscope to examine dislocation/grain boundary interactions; (6) examined dislocation structures in lightly-deformed NiAl and FeAl and, based on observations in the latter, proposed a mechanism for โ€ฆ
Date: April 16, 1990
Creator: Baker, I.
Object Type: Report
System: The UNT Digital Library
The spatial evaluation of neighborhood clusters of birth defects (open access)

The spatial evaluation of neighborhood clusters of birth defects

Spatial statistics have recently been applied in epidemiology to evaluate clusters of cancer and birth defects. Their use requires a comparison population, drawn from the population at risk for disease, that may not always be readily available. In this dissertation the plausibility of using data on all birth defects, available from birth defects registries, as a surrogate for the spatial distribution of all live births in the analysis of clusters is assessed. Three spatial statistics that have been applied in epidemiologic investigations of clusters, nearest neighbor distance, average interpoint distance, and average distance to a fixed point, were evaluated by computer simulation for their properties in a unit square, and in a zip code region. Comparison of spatial distributions of live births and birth defects was performed by drawing samples of live births and birth defects from Santa Clara County, determining the street address at birth, geocoding this address and evaluating the resultant maps using various statistical techniques. The proposed method was then demonstrated on a previously confirmed cluster of oral cleft cases. All live births for the neighborhood were geocoded, as were all birth defects. Evaluation of this cluster using the nearest neighbor and average interpoint distance statistics was โ€ฆ
Date: April 16, 1990
Creator: Frisch, J. D.
Object Type: Report
System: The UNT Digital Library
The alias method: A fast, efficient Monte Carlo sampling technique (open access)

The alias method: A fast, efficient Monte Carlo sampling technique

The alias method is a Monte Carlo sampling technique that offers significant advantages over more traditional methods. It equals the accuracy of table lookup and the speed of equal probable bins. The original formulation of this method sampled from discrete distributions and was easily extended to histogram distributions. We have extended the method further to applications more germane to Monte Carlo particle transport codes: continuous distributions. This paper presents the alias method as originally derived and our extensions to simple continuous distributions represented by piecewise linear functions. We also present a method to interpolate accurately between distributions tabulated at points other than the point of interest. We present timing studies that demonstrate the method's increased efficiency over table lookup and show further speedup achieved through vectorization. 6 refs., 2 figs., 1 tab.
Date: November 16, 1990
Creator: Rathkopf, James A.; Edwards, Arthur L. & Smidt, Rorbert K.
Object Type: Article
System: The UNT Digital Library
Radiation Laboratory, University of Notre Dame (open access)

Radiation Laboratory, University of Notre Dame

The Notre Dame Radiation Laboratory is a facility of the Department of Energy operated for DOE by the University of Notre Dame. The majority of the programs within the Laboratory are supported by the Office of Basic Energy Sciences of DOE and, unless otherwise noted in the following, support can be attributed to the Office of Basic Energy Sciences. Certain additional programs, so indicated, are supported by the Office of Standard Reference Data of the National Institute of Standards and Technology. Research programs conducted at the laboratory are briefly described.
Date: October 16, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Solving the Fokker-Planck equation on a massively parallel computer (open access)

Solving the Fokker-Planck equation on a massively parallel computer

The Fokker-Planck package FPPAC had been converted to the Connection Machine 2 (CM2). For fine mesh cases the CM2 outperforms the Cray-2 when it comes to time-integrating the difference equations. For long Legendre expansions the CM2 is also faster at computing the Fokker-Planck coefficients. 3 refs.
Date: October 16, 1990
Creator: Mirin, A. A.
Object Type: Article
System: The UNT Digital Library
(Boiling water reactor (BWR) CORA experiments) (open access)

(Boiling water reactor (BWR) CORA experiments)

To participate in the 1990 CORA Workshop at Kernforschungszentrum Karlsruhe (KfK) GmbH, Karlsruhe, FRG, on October 1--4, and to participate in detailed discussions on October 5 with the KfK CORA Boiling Water Reactor (BWR) experiments. The traveler attended the 1990 CORA Workshop at KfK, FRG. Participation included the presentation of a paper on work performed by the Boiling Water Reactor Core Melt Progression Phenomena Program at Oak Ridge National Laboratory (ORNL) on posttest analyses of CORA BWR experiments. The Statement of Work (November 1989) for the BWR Core Melt Progression Phenomena Program provides for pretest and posttest analyses of the BWR CORA experiments performed at KfK. Additionally, it is intended that ORNL personnel participate in the planning process for future CORA BWR experiments. For these purposes, meetings were held with KfK staff to discuss such topics as (1) experimental test schedule, (2) BWR test conduct, (3) perceived BWR experimental needs, and (4) KfK operational staff needs with respect to ORNL support. 19 refs.
Date: October 16, 1990
Creator: Ott, L.J.
Object Type: Report
System: The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 142, No. 28, Ed. 1 Thursday, August 16, 1990 (open access)

Cherokeean/Herald (Rusk, Tex.), Vol. 142, No. 28, Ed. 1 Thursday, August 16, 1990

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: August 16, 1990
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Texas Register, Volume 15, Number 79, Pages 6045-6088, October 16, 1990 (open access)

Texas Register, Volume 15, Number 79, Pages 6045-6088, October 16, 1990

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: October 16, 1990
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 15, Number 86, Pages 6541-6629, November 16, 1990 (open access)

Texas Register, Volume 15, Number 86, Pages 6541-6629, November 16, 1990

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: November 16, 1990
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 15, Number 21, Pages 1427-1548, March 16, 1990 (open access)

Texas Register, Volume 15, Number 21, Pages 1427-1548, March 16, 1990

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: March 16, 1990
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 15, Number 13, Pages 789-904, February 16, 1990 (open access)

Texas Register, Volume 15, Number 13, Pages 789-904, February 16, 1990

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: February 16, 1990
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 15, Number 5, Pages 241-290, January 16, 1990 (open access)

Texas Register, Volume 15, Number 5, Pages 241-290, January 16, 1990

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: January 16, 1990
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Attorney General Opinion: JM-1156 (open access)

Texas Attorney General Opinion: JM-1156

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Child care facilities in building owned or leased by the State of Texas (RQ-1905)
Date: April 16, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-1208 (open access)

Texas Attorney General Opinion: JM-1208

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Potential conflict in two amendments adopted at the same legislative session regarding requirements of notice for spelling realty located in a special district (RQ-1960)
Date: August 16, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-1234 (open access)

Texas Attorney General Opinion: JM-1234

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Authority of a county clerk to collect a fee upon filing of an application for emergency detention or court-ordered services in cases involving mental competency or chemical dependency, andrelated questions (RQ-2004)
Date: October 16, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History

[Photograph 2012.201.B0967.0661]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Lambrecht Construction is move toward an April completion of a $2 million project at William E. Davis & Sons Inc."
Date: February 16, 1990
Creator: Argo, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0966.0410]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Rebel Oil Co. has acquired the Business Benefits Building at 900 NW 60."
Date: April 16, 1990
Creator: Southerland, Paul B.
Object Type: Photograph
System: The Gateway to Oklahoma History
Fast Shutdown System tests in the Georgia Tech Research Reactor (open access)

Fast Shutdown System tests in the Georgia Tech Research Reactor

The Fast Shutdown System (FSS) is a new safety system design concept being considered for in installation in the Savannah River (SRS) production reactors. This system is expected to mitigate the consequences of a Design Basis Loss of Coolant Accident, and therefore allow higher operational power levels. A test of this system in the Georgia Tech Research Reactor is proposed to demonstrate the efficacy of this concept. Three tests will be conducted at full power (5MW) and one at low power (100kw). Two full power tests will be conducted with the FSS rod backfilled with one (1) atmosphere of He-4, and one with the rod evacuated. The low power conducted with the FSS rod evacuated. Neutron flux and pressure data will be collected with an independent data acquisition system (DAS). Safety issues associated with the performance of the Fast Shutdown System experiments are addressed in this report. The credible accident scenarios were analyzed using worst case scenarios to demonstrate that no significant nuclear or personnel safety hazards would result from the performance of the proposed experiments.
Date: March 16, 1990
Creator: Wallace, J. M.
Object Type: Report
System: The UNT Digital Library
Enhancing the use of coals by gas reburning-sorbent injection. Quarterly report No. 10, January 19--March 31, 1990 (open access)

Enhancing the use of coals by gas reburning-sorbent injection. Quarterly report No. 10, January 19--March 31, 1990

The objective of this project is to evaluate and demonstrate a cost effective emission control technology for acid rain precursors, oxides of nitrogen (NO{sub x}) and sulfur (SO{sub x}), on two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. A third unit, wall fired, is ``on hold`` because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and 50 percent in SO{sub x} emissions, by a combination of two developed technologies, gas reburning (GR) and sorbent injection (SI). With GR, about 80--85 percent of the coal fuel is fired in the primary combustion zone. The balance of this fuel is added downstream as natural gas to create a slightly fuel rich environment in which NO{sub x} is converted to N{sub 2}. The combustion process is completed by overfire air addition. SO{sub x} emissions are reduced by injecting dry sorbents (usually calcium based) into the upper furnace. The sorbents trap SO{sub x} as solid sulfates that are collected in the particulate control device.
Date: April 16, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: LO90-3 (open access)

Texas Attorney General Opinion: LO90-3

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification.
Date: January 16, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: LO90-25 (open access)

Texas Attorney General Opinion: LO90-25

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether the Web County Bail Board may charge a $15 fee on each bail bond that is executed by a licensed bondsman.
Date: May 16, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: LO90-26 (open access)

Texas Attorney General Opinion: LO90-26

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Effect of article 8407a, V.T.C.S., as amended by House Bill 1558, Acts 1989, 71st Leg., ch. 1159, ยง 8, eff. Sept. 1, 1989, Letter of Opinion 88-96 (1988).
Date: May 16, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
[Media Release & Legal Resolution: LGBT Veterans] (open access)

[Media Release & Legal Resolution: LGBT Veterans]

A media release followed by an approved resolution. The media release from National Coming Out Day announced that the rainbow flag would fly at every state capitol from Santa Fe to Sacramento. The resolution was from National Security and Foreign Affairs that approves state departments denying homosexuals the right to serve in the military.
Date: October 16, 1990
Creator: National Coming Out Day
Object Type: Text
System: The UNT Digital Library