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Startup and Initial Testing of SM-1 Core II With Special Components

Description: The loading operation for SM-1 Core II is described. Results of startup physics measurements (Test A-300 (Series) and fission product iodine monitoring in the primary coolant are given. The SM-1 Core II initial loading progressed satisfactorily, fulfilling the predictions of the zero power experiment performed at the Alco Criticality Facility. The initial cold clean five rod bank position was 6.53 in.; the initial hot, no xenon, five rod bank position was 9.62 in.; the initial hot, equilibrium xenon, five rod bank position was 11.41 in.; and the initial hot, peak xenon, five rod bank position was 12.14 in. Rods A and B were 19.00 in. in all four measurements. Stuck rod measurements indicated that an adequate shutdown margin was available with 20% of the rods fully withdrawn. All rod calibrations indicated a distinct shift and broadening of the peaks when compared with similar Core I calibrations. The temperature coefficient for Core II was 3.5 cents/ deg F at 440 deg F. Equilibrium xenon was worth approximately - 00 while peak xenon was worth - 43, both relative to the hot, no xenon core condition. During the period June 2, 1961 through September 30, 1961, the reactor operated at a total of 935.68 deg Fdays which is equivalent to 1.34 MWYR of energy release and represents an average load factor of 44% typical of training periods. The estimated reactivity in the core at startup is .00. A core life of 12.2 MWYR is predicted for the original configuration of Core II. The results of gross fission product iodine monitoring showed that those levels were about one-third to one-half of those found at the end of Core I Operation. (auth)
Date: February 28, 1962
Creator: Moote, F. G. & Schrader, E. W.
Partner: UNT Libraries Government Documents Department
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Office of Waste Isolation progress report, January 1978

Description: This document, prepared to report progress on the National Waste Terminal Storage (NWTS) program, consists of project reports on work performed by organizations under subcontract to OWI, by DOE contractors, by OWI consultants, and by other federal agencies participating in the NWTS program. The project reports are made under the headings technical projects, facility projects, planning and analysis, and regulatory affairs. (DLC)
Date: February 28, 1978
Creator: Zerby, C.D.
Partner: UNT Libraries Government Documents Department
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[Letter from Cassandra Broadus to Linda Medearis, February 28, 1991]

Description: Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Linda Medearis, Principal at Pilot Point Elementary. In regards to requesting the chairpersons of kindergarten, second and third grade to identify themes for the upcoming 1991 NTIEVA summer institute. Broadus writes that the themes themes will be taught throughout the year to the children and she's looking forward to their contribution.
Date: February 28, 1991
Creator: Broadus, Cassandra
Partner: UNT Libraries Special Collections
open access

[Letter from Bill McCarter and Jack Davis to Dr. Albert Thomas, February 28, 1996]

Description: Photocopy of a letter from Bill McCarter and Jack Davis, co-directors of North Texas Institute for Educators on the Visual Arts, to Dr. Albert Thomas, Superintendent of Denton ISD. Discussing how the Summer of 1995 marked the sixth summer institute in discipline-based art education, DBAE, offered by the NTIEVA, and how they are pleased to announce that the Getty Center has continued matching the grants for the next five years. Allowing the institute to continue maintenance and support during the school year. Included within the letter are details highlighting the Elementary Summer Institute, Leadership Seminar and Secondary Institute. Copied on the letter is Anita Stipnek.
Date: February 28, 1996
Creator: McCarter, William & Davis, Donald Jack
Partner: UNT Libraries Special Collections
open access

High resolution positron Q-value measurements and nuclear structure studies far from the stability line. Progress report

Description: Research progress in briefly described, and details are presented in the attached preprints and reprints: (1) precision mass differences in light rubidium and krypton isotopes utilizing beta endpoint measurements; (2) precision mass measurements utilizing beta endpoints; (3) Monte Carlo calculations predicting the response of intrinsic GE detectors to electrons and positrons; and (4) reactor antineutrino spectra and nuclear spectroscopy of isotopes far from beta stability. (WHK)
Date: February 28, 1982
Creator: Avignone, F. T. III
Partner: UNT Libraries Government Documents Department
open access

Tertiary Blast Effects: The Effects of Impact on Mice, Rats, Guinea Pigs and Rabbits. Technical Progress Report

Description: A total of 455 mlce, rats, gulnea plgs, and rabbits was subjected to lmpact at velocitles ranglng between 25 ft/sec and 51 ft/sec. The deslred velocities were generated by allowlng the anlmals to free-fall from various helghts to a flat concrete pad. The ventral surface of each anlmal was the area of impact. Problt analyses of the 24-hr mortallty data ylelded LD/sub 50/ lmpact veloclties with 95% confldence limits as follows: mouse, 39.4 (37.4 to 42.0) ft/ sec; rat, ft/sec; and rabbit, 31.7 (30.2 to 33.3) ft/sec. The LD/sub 50/ figures for the mouse and rat were slgnificantly higher, statlstically, than those for the gulnea plg and rabblt. The small spread ln the LD/sub 50/ values suggested little variation ln the tolerance of blologlcal systems to impact. Further, the steepness of the mortallty curves lndicated a narrow survlval range to lmpact. Extrapolatlon of the experimental data to the 70 kg anlmal yielded a predicted LD/ sub 50/ impact velocity of 26 ft/sec (18 mph). Literature relevant to the human case was revlewed and the tentative appllcabllity of the predlcted flgures to adult man ls discussed. (auth)
Date: February 28, 1961
Creator: Richmond, D. R.; Bowen, I. G. & White, C. S.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Gaseous Waste Handling Systems for PL-3

Description: Gaseous waste handling systems are compared for direct and indirect boiling water and pressurized water reactors for PL-3 application. Areas that are common to the various concepts are not discussed since they do not enter into a comparison study. The major differences present are in the handling of active gases released to or held in the primary system coolant. These gases which could be present, their possibIe release from the system, and the necessary processing requirements are discussed in detail. Sufficient information is presented to enable one to analyze the methcds required to remove gaseous activity present in other size and type pressurized and boiIing water reactors. (auth)
Date: February 28, 1962
Creator: Noble, J. H. & Duke, E. E.
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Brady law]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1994, 10:00 p.m.
Duration: 1 minute 50 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Background]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1994, 5:00 p.m.
Duration: 1 minute 39 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

Management options for implementing a basic and applied research program responsive to CS technology base needs. Task VIII. Review existing CS materials R and D programs

Description: Possibilities for setting up a basic and applied research program that would be responsive to the Conservation and Solar energy base needs are considered with emphasis on the area of materials research. Several organizational arrangements for the implementation of this basic and applied research program are described and analyzed. The key functions of the system such as resources allocation, and program coordination and management follow from two fundamental characteristics: assignment of lead responsibility (CS and the Office of Energy Research, ER); and nature of the organizational chain-of-command. Three options are categorized in terms of these two characteristics and discussed in detail. The first option retains lead responsibility in ER, with CS personnel exercising sign-off authority and filling the coordination role. Option 2 places lead responsibility with CS program office management, and utilizes the existing chain-of-command, but adds a Basic and Applied Research Division to each program office. Option 3 also places lead responsibility with CS, but within a new Office of Basic and Applied Research, which would include a Research Coordinator to manage interactions with ER, and Research Managers for each CS program area. (MCW)
Date: February 28, 1980
Partner: UNT Libraries Government Documents Department
open access

Fundamentals of interruption in vacuum. Eleventh progress report

Description: During the past three months effort has concentrated on formulating a method to predict the enhancement of electrode surface field and power input occasioned by the presence of a projection on the electrode surface, during the ion sheath development period which attends the scavenging a contact gap following current interruption in vacuum. In addition, experimental evidence has been obtained to support the theory, postulated earlier, of a turn-around interval for electrons left in the gap, which preceeds the rise of the transient recovery voltage.
Date: February 28, 1981
Creator: Greenwood, A. N. & Sullivan, J. S.
Partner: UNT Libraries Government Documents Department
open access

Periods found in heat measurements obtained by calorimetry

Description: During a span of 640 days, a periodicity of 1.5158 +- 0.0008 days was discovered in successive heater equilibria on Calorimeter No. 127. Measurements were taken at 12-h intervals, with occasional changes of exactly 3 or 6 h in the schedule of measurements. This schedule eliminated all other possible periods except a period of 0.150156 days. Periods of 1.519125 and 1.511283 days were discovered in data on the excess length of day as obtained by the US Naval Observatory over a period of 24 y. These two periods could equally well represent periods of 0.150189 and 0.150112 days, since measurements were obtained only once every 24 h. It is suggested that periods observed in sensitive calorimeters and in length of day data may be related. 1 reference, 6 figures, 5 tables.
Date: February 28, 1984
Creator: Jordan, K. C.
Partner: UNT Libraries Government Documents Department
open access

Liquid Phase Methanol LaPorte Process Development Unit: Modification, Operation, and Support Studies

Description: The LPMEOH process was conceived and patented by Chem Systems Inc. in 1975. Initial research and studies on the process focused on two distinct modes of operation. The first was a liquid fluidized mode with relatively large catalyst pellets suspended in a fluidizing liquid, and the second was an entrained (slurry) mode with fine catalyst particles slurried in an inert liquid. The development of both operating modes progressed in parallel from bench scale reactors, through an intermediate scale lab PDU, and then to the LaPorte PDU in 1984. The slurry mode of operation was ultimately chosen as the operating mode of choice due to its superior performance.
Date: February 28, 1991
Partner: UNT Libraries Government Documents Department
open access

Heat exchanger restart evaluation

Description: On December 24, 1991, the K-Reactor was in the shutdown mode with full AC process water flow and full cooling water flow. Safety rod testing was being performed as part of the power ascension testing program. The results of cooling water samples indicated tritium concentrations higher than allowable. Further sampling and testing confirmed a Process Water System to Cooling Water System leak in heat exchanger 4A (HX 4A). The heat exchanger was isolated and the plant shutdown. Heat exchanger 4kA was removed from the plant and moved to C-Area prior to performing examinations and diagnostic testing. This included locating and identifying the leaking tube or tubes, eddy current examination of the leaking tube and a number of adjacent tubes, visually inspecting the leaking tube from both the inside as well as the area surrounding the failure mechanism. In addition ten other tubes that either exhibited eddy current indications or would represent a baseline condition were removed from heat exchanger 4A for metallurgical examination. Additional analysis and review of heat exchanger leakage history was performed to determine if there are any patterns which can be used for predictive purposes. Compensatory actions have been taken to improve the sensitivity and response time to any future events of this type. The results of these actions are summarized herein.
Date: February 28, 1992
Creator: Morrison, J. M.; Hirst, C. W. & Lentz, T. F.
Partner: UNT Libraries Government Documents Department
open access

DEVELOPMENT OF FREEZE VALVE FOR USE IN THE MSRE

Description: Three types of frozen-seal valves'' were tested for possible use in the MSRE. The seal was melted by direct resistance heat, by induction heat, and by clamp-on Calrod heat. The frozen seal was made in a preformed restriction section of a standard piece of pipe by a cooling-gas jet stream directed at the restriction. All three valves performed satisfactorily through 100 test cycles. The Calrodheated valve was selected for MSRE use on the basis of simplicity of design and of operation. Two of the valves are successfully undergoing further tests on the MSRE Engineering Test Loop. (auth)
Date: February 28, 1962
Creator: Richardson, M.
Partner: UNT Libraries Government Documents Department
open access

Prevalence of Mental Illness in the United States: Data Sources and Estimates

Description: This report briefly describes the methodology and results of three large surveys (funded in whole or in part by the U.S. Department of Health and Human Services) that provide national prevalence estimates of diagnosable mental illness: the National Comorbidity Survey Replication (NCS-R), the National Comorbidity Survey Replication Adolescent Supplement (NCS-A), and the National Survey on Drug Use and Health (NSDUH). The report then presents prevalence estimates of any mental illness and serious mental illness based on each survey and ends with a brief discussion of how these prevalence estimates might inform policy discussions
Date: February 28, 2014
Creator: Bagalman, Erin & Napili, Angela
Partner: UNT Libraries Government Documents Department
open access

The Army's Ground Combat Vehicle (GCV) Program: Background and Issues for Congress

Description: This report looks at the history and current need for a Ground Combat Vehicle (GCV) program. Potential issues for Congress include the role of the GCV and the need for the program in a downsized Army that will likely have fewer heavy brigade combat teams (HBCTs).
Date: February 28, 2014
Creator: Feickert, Andrew
Partner: UNT Libraries Government Documents Department

Extended Date/Time Format (EDTF) Dates Research Datasets

Description: Two datasets, each with 390,751 date samples from the UNT Libraries' digital collections. These samples were compiled for research regarding the Extended Date/Time Format (EDTF) standard. The first dataset contains a concatenated list of date values from the metadata records in The Portal to Texas History, the UNT Digital Library, and The Gateway to Oklahoma History. The "classified" dataset includes labels expressing whether each date is EDTF-valid and the level of conformance.
Date: February 28, 2013
Creator: Phillips, Mark Edward
Partner: UNT Libraries
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