69,708 Matching Results

Search Results

0. 20-m (8-in.) Primary Burner Development Report

Description: High-Temperature Gas-Cooled Reactors (HTGRs) utilize graphite-base fuels. Fluidized-bed burners are being employed successfully in the experimental reprocessing of these fuels. The primary fluidized-bed burner is a unit operation in the reprocessing flowsheet in which the graphite moderator is removed. A detailed description of the development status of the 0.20-m (8-in.) diameter primary fluidized-bed burner as of July 1, 1977 is presented. Experimental work to date performed in 0.10; 0.20; and 0.40-m (4, 8, and 16 in.) diameter primary burners has demonstrated the feasibility of the primary burning process and, at the same time, has defined more clearly the areas in which additional experimental work is required. The design and recent operating history of the 0.20-m-diameter burner are discussed, with emphasis placed upon the evolution of the current design and operating philosophy.
Date: December 1977
Creator: Stula, R. T.; Young, D. T. & Rode, J. S.
Partner: UNT Libraries Government Documents Department

1.1-meter bore, 8-Tesla test facility

Description: The design and fabrication of a 1.1-m bore superconducting coil for an 8- T facility at Lawrence Livermore Laboratory are discussed. This facility will provide the backing field required for testing large multifilamentary Nb$sub 3$Sn coils as part of the superconductor development program at Livermore. The magnet measures 1.85 m o.d., is 1.5 m in length, and is solenoid wound in four separate modules. Total cold weight of the assembly is 18,000 Kg. A NbTi superconductor is used throughout with a gradation of current density within the magnet to provide complete cryostatic stability. The preliminary design of a large 3500-A multifilamentary Nb$sub 3$Sn insert magnet is also included. Together, the backing coil and insert magnets are designed to produce a 12-T central field in a 0.4m bore. The ''equal area'' theory of cryostatic stability is applied in the design of both magnet systems and is discussed in detail. A large open-mouth cryostat is used and measures 2 m in diameter and 3.7 m in length. Details of Dewar design and the refrigeration requirements are included. (auth)
Date: November 19, 1975
Creator: Nelson, R.; Cornish, D.; Zbasnik, J.; Sackett, S. & Taylor, C.
Partner: UNT Libraries Government Documents Department

1/2/sup +/. -->. 1/2/sup -/ beta decay of /sup 19/Ne and the parity nonconserving NN force

Description: A branching ratio of (1.20 +- 0.20) x 10/sup -4/ is obtained for the ..beta../sup +/ decay of /sup 19/Ne to the 110 keV 1/2/sup -/ level of /sup 19/F. This transition (presumably dominated by the ..delta..J/sup ..pi../ = 0/sup -/ axial charge operator) provides a crucial test of wavefunctions used in interpreting the parity mixing of the ground and 110 keV levels of /sup 19/F. These wavefunctions, which yield a parity mixing larger than that observed experimentally, also predict too large a ..beta../sup +/ decay rate.
Date: January 1, 1978
Creator: Adelberger, E.G.; Hindi, M.M.; Hoyle, C.D.; Swanson, H.E. & Von Lintig, R.D.
Partner: UNT Libraries Government Documents Department

1,3,5-trichlorobenzene progress report, July--September 1976

Description: Research progress is reported on the following topics: (1) conversion of 2, 4, 6-trichloroaniline to 2, 4, 6-trichloronitrobenzene; (2) nitration of 1, 2, 4-trichlorobenzene; (3) exploration of the route to 1, 3, 5-trichlorobenzene via aniline; and (4) direct nitration of trichloroaniline. (TFD)
Date: September 1, 1976
Creator: Estes, Z. L.
Partner: UNT Libraries Government Documents Department

1. 5 GeV/c multiturn shaving extraction and its transport line for the Brookhaven AGS

Description: A system for fast shaving extraction at 1.5 GeV/c is implemented to extract the circulating beam in five turns. A numerical simulation is first carried out to determine the emittance and the rf structure of the extracted beam. This is followed by several machine study sessions which establish the optimal extraction configuration, confirm the emittance, and modify the transport line for low energy beam. Finally, a one-week run for the Neutrino Oscillation experiment demonstrates that the system is very stable and capable of delivering 7.5 x 10/sup 12/ p/sec with 70% extraction efficiency and 95% transport efficiency.
Date: January 1, 1979
Creator: Weng, W.T.; Blumberg, L.N.; Gill, E.; Soukas, A.; Witkover, R.L.; Egleman, E. et al.
Partner: UNT Libraries Government Documents Department

1.5 megawatt dc chopper power supplies for plasma shape control on Doublet III

Description: The Doublet III device is designed to study noncircular plasmas, including doublet and dee-shaped cross-sections. The plasma shape is determined by a system of 24 field-shaping coils which surround the vacuum vessel. Control of the magnetic flux linking these coils allows the plasma shape to be varied and controlled. This paper describes the high-speed dc chopper which is a major component of the field-shaping coil power system. The high-speed dc choppers, with a frequency response of up to 5 kHz and a switching power capability of 1.5 megawatts are used for fine tuning and feedback control of the plasma position and shape. The design and operation of two 1.5 megawatt, 3 kHz choppers used on closed loop plasma control experiments will be presented.
Date: November 1979
Creator: Rock, P. J. & Wesley, J. C.
Partner: UNT Libraries Government Documents Department

1/5-scale experiment of a Mark I boiling-water reactor pressure-suppression system under hypothetical LOCA conditions

Description: Experimental results show the sensitivity of hydrodynamically generated vertical loads to changes in the drywell pressurization rate, downcomer submergence, and vent-line loss coefficient. Insignificant effects on peak vertical loads were observed when the vent-line loss was varied. Peak vertical loads can be reduced by adding initial drywell overpressure so that the downcomers are partly cleared of water. Spatial variation of pressure at about the time of vent clearing is seen in comparisons of data from locations along the axis of the toroidal wetwell.
Date: July 8, 1977
Creator: Pitts, J. H. & McCauley, E. W.
Partner: UNT Libraries Government Documents Department

1.06 μm 150 psec laser damage study of diamond turned, diamond turned/ polished and polished metal mirrors

Description: Using a well characterized 1.06 μm 150 ps glass laser pulse the damage characteristics for diamond turned, diamond turned/ polished, and polished copper and silver mirrors less than 5 cm diameter were studied. Although most samples were tested with a normal angle of incidence, some were tested at 45$sup 0$ with different linear polarization showing an increase in damage threshold for S polarization. Different damage mechanisms observed will be discussed. Laser damage is related to residual surface influences of the fabrication process. First attempts to polish diamond turned surfaces resulted in a significant decrease in laser damage threshold. The importance of including the heat of fusion in the one dimensional heat analysis of the theoretical damage threshold and how close the samples came to the theoretical damage threshold is discussed. (auth)
Date: July 24, 1975
Creator: Saito, T. T.; Milam, D.; Baker, P. & Murphy, G.
Partner: UNT Libraries Government Documents Department

[The 1,000th Ph.D. Recipient, #1]

Description: Photograph of the 1,000th person to graduate from North Texas State University with a Ph.D. degree; he is wearing a dark colored robe and holding a paper on top of his mortarboard. An unidentified professor next to him (right) is pointing to something on the paper. They are standing in front of wood-paneled walls with a floor-to-ceiling curtain as well as a statue in the right side of the image and artwork partially visible on the left.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

[The 1,000th Ph.D. Recipient, #2]

Description: Photograph of the 1,000th student to graduate from North Texas State University with a Ph.D. degree. He is wearing dark-colored robes and a mortarboard, standing in the corner of a wood-paneled room. An unidentified faculty member is standing in front of him and shaking his hand.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

[The 1,000th Ph.D. Recipient, #3]

Description: Photograph of a student wearing commencement robes and a mortarboard, shaking hands with an unidentified faculty member (left). The student is the 1,000 person to graduate from North Texas State University with a Ph.D. degree. They are standing in the corner of a wood-paneled room and several framed certificates and plaques are on the wall in the right side of the image.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

[The 1,000th Ph.D. Recipient, #4]

Description: Photograph an unidentified faculty member shaking hands with the 1,000th person to graduate from North Texas State University with a Ph.D. degree. The student is wearing dark-colored robes with a mortarboard. They are standing in the corner of a wood-paneled room with floor-to-ceiling curtains to the left.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

[The 1,000th Ph.D. Recipient, #5]

Description: Photograph of an unidentified faculty member with the 1,000th recipient of a North Texas State University Ph.D. degree; they are shaking hands, but turned so that both of them can look at the camera. The student is wearing dark-colored graduation robes and a mortarboard. They are standing in the corner of a wood-paneled room.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

[The 1,000th Ph.D. Recipient, #6]

Description: Photograph of the 1,000th graduate to receive a Ph.D. from North Texas State University, shaking hands with an unidentified professor, turned so that they can both face the camera. The student is wearing dark-colored graduation robes and a mortarboard; the tassel is partially obscuring his face. They are standing in the corner of a wood-paneled room.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

[The 1,000th Ph.D. Recipient, #7]

Description: Photograph of a student wearing graduation robes and a mortarboard, standing between two unidentified faculty members, who are facing him. The student is the 1,000 person to graduate from North Texas State University with a Ph.D. degree. They are standing in the corner of a wood-paneled room, in front of a statue on a pedestal that is partially visible in the center of the image.
Date: December 22, 1975
Partner: UNT Libraries Special Collections

1 - FFTF-LMFBR seal test program, July-Septeember 1974

Description: The objectives of the general seal test program are to: (1) conduct static and dynamic tests to demonstrate or determine the mechanical performance of full-size (cross-section) FFTF fuel transfer machine and reactor vessel head seals intended for use in a sodium vapor - inert gas environment, (2) demonstrate that these FFTF seals or new seal configurations provide acceptable fission product and cover gas retention capabilities at Clinch River Breeder Reactor Plant (CRBRP) operating environmental conditions other than radiation, (3) develop improved seals and seal technology for the CRBRP to support the national objective to reduce all atmospheric contaminations to low levels, and (4) publish a Design Guide for reactor seals along with Ordering Data. Test results for the quarter are presented.
Date: January 1, 1974
Creator: Kurzeka, W. & Oliva, R.
Partner: UNT Libraries Government Documents Department

1-GWh diurnal load-leveling Superconducting Magnetic Energy Storage system reference design

Description: A point reference design has been completed for a 1-GWh Superconducting Magnetic Energy Storage system. The system is for electric utility diurnal load-leveling but can also function to meet much faster power demands including dynamic stabilization. This study explores several concepts of design not previously considered in the same detail as treated here. Because the study is for a point design, optimization in all respects is not complete. This report examines aspects of the coil, the superconductor supported off of the dewar shell, the dewar shell, and its configuration and stresses, the underground excavation and construction for holding the superconducting coil and its dewar, the helium refrigeration system, the electrical converter system, the vacuum system, the guard coil, and the costs. This report is divided into two major portions. The first is a general treatment of the work and the second is seven detailed technical appendices issued as separate reports. The information presented on the aluminum stabilizer for the conductor, on the excavation, and on the converter is based upon industrial studies contracted for this work.
Date: September 1, 1979
Creator: Rogers, J.D.; Hassenzahl, W.V. & Schermer, R.I. (comps.)
Partner: UNT Libraries Government Documents Department

1-GWh diurnal load-leveling superconducting magnetic energy storage system reference design. Appendix A: energy storage coil and superconductor

Description: The technical aspects of a 1-GWh Superconducting Magnetic Energy Storage (SMES) coil for use as a diurnal load-leveling device in an electric utility system are presented. The superconductor for the coil is analyzed, and costs for the entire coil are developed.
Date: September 1, 1979
Creator: Schermer, R.I.
Partner: UNT Libraries Government Documents Department

1-GWh diurnal load-leveling superconducting magnetic energy storage system reference design. Appendix B: cost study, high-purity aluminum production

Description: Cost information is supplied for aluminum with purities of 200, 2000, and 5000 residual resistivity ratio. Two production situations were used for each purity: (1) 1 x 10/sup 6/ kg/yr production rate with a 30-yr sustaining market and (2) 1 x 10/sup 6/ kg/yr production rate for 2 yrs only. These productions and purities are of interest for manufacturing devices for Superconducting Magnetic Energy Storage. The cost study results are presented as a range and include (1) the selling price of the aluminum for each case, (2) the cost of facilities including construction, engineering, and related costs, (3) the cost of money and depreciation (interest/amortization), and (4) the energy costs - the total of power and fuel. The range is affected by possible production variations and other uncertainties. Information is also given on plant location options and the preferred feed to the purification facility (with ore source effects).
Date: September 1, 1979
Creator: Cochran, C.N.; Dawless, R.K. & Whitchurch, J.B.
Partner: UNT Libraries Government Documents Department

1-GWh diurnal load-leveling superconducting magnetic energy storage system reference design. Appendix C: dewar and structural support

Description: The mechanical aspects of the dewar to contain a 1-GWh superconducting coil in a 1.8 K helium bath and the means for supporting the coil and dewar against the rock of an underground excavation created for just that purpose are presented.
Date: September 1, 1979
Creator: Bennett, J.G. & Ju, F.D.
Partner: UNT Libraries Government Documents Department