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D-Zero Cryostat Supplemental Rupture Disc

Description: The common relief and rupture disc vent line requires a double disc assembly with vented interspace for accurate disc burst pressures. The first disc must take pump and purge vacuum loading, but be set to operate at 110% of the MAWP, 18.3 psig (ASME code). The available solution is 18.3 psig with a burst tolerance of +/- psig. The interspace should be locally vented by a flow limiting vent valve to decouple the vent line backpressure from the vessel rupture disc. The second disc must take the worst case vent line backpressure, the steady state value found in D-Zero engineering note 3740.000-EN-63 with all three cryostats simultaneously venting at the fire condition into the 4-inch x 6-inch and 6-inch x 8-inch sections. This value is less than 2 psid. The maximum rupture value for the second disc must be less than the minimum rupture value for the first disc less 2 psid i.e. < 16.3.
Date: August 3, 1987
Creator: Mulholland, G. T.
Partner: UNT Libraries Government Documents Department

Testing geopressured geothermal reservoirs in existing wells: Detailed completions prognosis for geopressured-geothermal well of opportunity, prospect #1

Description: This prospective well of opportunity was originally drilled and completed as a gas producer by Wrightsman Investment Company in early 1973. The original and present producing interval was from 15,216 to 15,238 feet. IMC Exploration Company, Inc. acquired the property from Wrightsman and is the present owner operator. The well is presently shut in s a non-economic producer and IMC proposed to perform plug and abandonment operations in April, 1980. This well has a good geopressured-geothermal water sand behind the 5-1/2 inch casing that has 94 feet of net sand thickness. Pursuant to DOE/NVO authorization of March 11,1980, Eaton negotiated an option agreement with IMC whereby IMC would delay their abandonment operations for a period of 90 days to permit DOE to evaluate the well for geopressure-geothermal testing. The IMC-Eaton option agreements provide that IMG will delay plugging the well until June 15, 1980. If Eaton exercises its option to acquire the well, IMC will sell the well bore, and an adjacent salt water disposal well, to Eaton for the sole consideration of Eaton assuming the obligation to plug and abandon the wells in accordance with lease and regulatory requirements. If Eaton does not exercise its option, then Eaton will pay IMC $95,000 cash and IMC will proceed with plugging and abandonment at the termination of the option period.
Date: April 3, 1980
Creator: Kennedy, Clovis A.
Partner: UNT Libraries Government Documents Department

Compendium of Precedents Involving Evidentiary Rulings and Applications of Evidentiary Principles from Selected Impeachment Trials

Description: At the present time, there are no binding rules of evidence or set of evidentiary principles to be applied in Senate impeachment trials. Rather, recourse is taken to the evidentiary rules and principles applicable in contemporaneous court proceedings and to precedents from past impeachment trial to provide guidance for Senate Impeachment Trial Committees or for the full Senate on evidentiary questions which arise in the impeachment context. This report compiles evidentiary precedents from the Senate impeachment trials of Judges Harry E. Claiborne, Halsted Ritter, Harold Louderback, and Charles Swayne. The evidentiary rulings and principles gleaned from this examination are arranged in subject matter categories, and within those categories, in reverse chronological order by trial.
Date: July 3, 1989
Creator: Bazan, Elizabeth B.; Shampansky, Jay R.; Crump, Karen & Nicholson, Maribel
Partner: UNT Libraries Government Documents Department

China-U.S.-Soviet Relations

Description: In 1979, a time of clear downturn in U.S.-Soviet relations over such sensitive issues as SALT, Soviet troops in Cuba, and the Soviet invasion of Afghanistan, the Carter Administration moved ahead with a series of measures designed to improve relations with Moscow's major adversary in Asia, the Peoples Republic of China (P.R.C.). The purpose of this report is to provide background for and summarize current developments in U.S. - People’s Republic of China (PRC) relations, including current and pending congressional actions involving the PRC.
Date: December 3, 1981
Creator: Sutter, Robert G.
Partner: UNT Libraries Government Documents Department

Modular Isotopic Thermoelectric Generator

Description: Advanced RTG concepts utilizing improved thermoelectric materials and converter concepts are under study at Fairchild for DOE. The design described here is based on DOE's newly developed radioisotope heat source, and on an improved silicon-germanium material and a multicouple converter module under development at Syncal. Fairchild's assignment was to combine the above into an attractive power system for use in space, and to assess the specific power and other attributes of that design. The resultant design is highly modular, consisting of standard RTG slices, each producing ~24 watts at the desired output voltage of 28 volt. Thus, the design could be adapted to various space missions over a wide range of power levels, with little or no redesign. Each RTG slice consists of a 250-watt heat source module, eight multicouple thermoelectric modules, and standard sections of insulator, housing, radiator fins, and electrical circuit. The design makes it possible to check each thermoelectric module for electrical performance, thermal contact, leaktightness, and performance stability, after the generator is fully assembled; and to replace any deficient modules without disassembling the generator or perturbing the others. The RTG end sections provide the spring-loaded supports required to hold the free-standing heat source stack together during launch vibration. Details analysis indicates that the design offers a substantial improvement in specific power over the present generator of RTGs, using the same heat source modules. There are three copies in the file.
Date: April 3, 1981
Creator: Schock, Alfred
Partner: UNT Libraries Government Documents Department

A VERY Informal Note on Cooling Pbars from the Main Injector

Description: For the Accelerator Upgrade (Phase I), we have chosen to upgrade the cooling in the following ways: (A) Increasing the existing 800 W system to 1600 W. (B) Adding momentum cooling (2x reduction in {Delta}p). (C) Increasing the electrode gap by {radical}(30/20). The electrode gap increase makes the yield greater at the price of reducing the cooling efficiency. The performance of the cooling system has been calculated in the approximation that the cooling process can be described by a Fokker-Planck equation. It appears that the existing anti-proton source can do fairly well with the anti-proton flux which is expected from the main injector. The Debuncher cooling will be noticeably inefficient, but probably acceptable. Improvements can be made by changing the Debuncher bandwidth to 4-8 GHz (perhaps several M$) or by increasing the accumulator aperture (15{pi} would be ambitious, but maybe not crazy). The existing 1-2 GHz stack tail system performs surprisingly well on paper - capable of fluxes up to 1.4 x 10{sup 11} per hour. However, it is not clear that our 'as built' stack tail system is really that good - having achieved a maximum of 0.6 x 10{sup 11} to date. Futhermore, there are noticeable problems with stability and roll-off of the stacking rate at high intensities (beyond 200 mA!). In order to increase the stacking rate beyond 1.4 x 10{sup 11} per hour, one must consider a higher bandwidth system. The simplest way to implement the system would be to change {gamma}t such that =.01 (half its current value of 0.02). Clearly changing {gamma}t and upgrading the cooling system would also run in the multi-M$ range.
Date: July 3, 1989
Creator: Marriner, J.
Partner: UNT Libraries Government Documents Department

EC Tube Fits

Description: In the design of the EC, the beam tube, through which the beam line travels, can be found in the IH tube which is centrally located in the IH module. However, also between the beam tube and the IH tube lie both the vacuum and inner tubes of the vacuum and inner vessels. It is the vacuum between these vessels which provides insulation between the ambient beam tube and liquid argon in the cryostat. while the vacuum tube is supported along its length with the inner tube as best as possible, the inner tube will only be supported at the ends. The beam tube will also be end-supported, but it will be allowed to rest directly on the inner surface of the vacuum tube. It is required that the beam tube be able to slide in and out of the vacuum tube with relative ease in order that the EC's can be moved away from the CC when necessary (repair work, etc.). Although the frequency of such a move is not known, it is hoped to be low, and it would therefore be desirable, for cost reasons, to be able to use stock tubing for the vacuum and beam tubes instead of using specially machined tubing.
Date: March 3, 1987
Creator: Kurita, C. H.
Partner: UNT Libraries Government Documents Department

Local Ganging in the Central Calorimeter and Major Portions of the Endcap Calorimeters

Description: This is the minority report on the decision to use local ganging in the central calorimeter and major portions of the end cap calorimeters. The method not chosen for the readout is distant ganging. This method requires that the signal from each pad be carried to the outer radial edge of the board. There the signals from successive boards are connected together in parallel(ganged). From there the signal is carried to the cryostat port. All of the procedures needed to effect this design are known at this time. The line connecting each pad to the outer edge of its board can be produced by routing the line onto the readout board when the pads are routed. The lines are designed to be .007 inches wide with .008 inch spacings between lines. Lines of these dimension have been produced at Fermi Lab with very little difficulty. Three lines each 50 feet long were cut with out a break or short on the first attempt using the Fermi Gerber router. The connection from the lead to ganging cable is made with lands at the outer edge of the board. The ganging cable is created by layering copper and mylar. The first surface is copper with spaces etched on it to create leads with the same spacing as the lands on the boards. the second layer is mylar. The third layer is a solid copper sheath. The fourth layer is mylar. This cable is held in contact with the lands by spring clips. This system was used to connect over 300 lines in series. The test piece was cold shocked in LN{sub 2} ten times without a failure in any connection. The ganging cable is then connected to a twisted pair cable. Several connectors are commercially available for this transition. All are extremely ...
Date: February 3, 1986
Creator: Pitas, A.
Partner: UNT Libraries Government Documents Department

AFR spent-fuel-storage program. Technical progress report, April 1981-June 1981

Description: Work on this project is focused on developing design and licensing information for the model facility. Final deliverables were prepared this period to submit to DOE for the licensing and high-density rack sub-tasks. DOE revised and reduced the scope of the 1981 AFR contract in June of 1981. Work is progressing satisfactorily to close out the remaining tasks under the revised scope by September 30, 1981.
Date: August 3, 1981
Creator: none,
Partner: UNT Libraries Government Documents Department

Survey of toxicity and carcinogenity of mineral deposits

Description: The toxicities and biogeochemical cycles of arsenic, cadmium, chromium, lead and nickel are reviewed in some detail, and other trace elements briefly mentioned. These heavy metals are used as a framework within which the problem of low-level radioactive waste disposal can be compared. (ACR)
Date: November 3, 1981
Creator: Furst, A. & Harding-Barlow, I.
Partner: UNT Libraries Government Documents Department

Physical-chemical NO/sub x/ mechanisms in fluidized bed combustion

Description: Fluidized bed combustors operate in the large-particle (> 1 mm) high-velocity (> 1 m/s) fluidization regime which differs from most previous applications. These characteristics foster a distinctive volatiles evolution structure in the vicinity of the coal injectors of bottom-fed atmospheric fluidized beds (AFBC). The evolution of coal volatiles associated with bottom-fed AFBC was defined as the focal point. The major effort of the work was concerned with a group combustion model of dense gas/solids mixtures of devolatilizing coal being injected into the bottom of an AFBC. Critical development needs were defined in the area of solids circulation and injector design which impact both basic FBC design and NO/sub x/ emissions. Results of model calculations identified important new physical-chemical mechanisms influencing NO/sub x/ emissions.
Date: November 3, 1980
Creator: Bywater, R. J.
Partner: UNT Libraries Government Documents Department

Low-Cost Solar Array Project. Task I. Silicon material: investigation of the hydrogenation of SiCl/sub 4/. Fifth quarterly report

Description: Reaction kinetic measurements on the hydrochlorination of SiCl/sub 4/ and mg silicon metal in the presence of a copper catalyst were last reported as a function of reaction temperature, reactor pressure and H/sub 2//SiCl/sub 4/ ratio, 3 SiCl/sub 4/ + 2 H/sub 2/ + Si ..-->.. 4 SiHCl/sub 3/. The same reaction was repeated at a lower catalyst loading of 2 wt%. In the presence of 2 wt% cuprous chloride (based on silicon metal), the hydrochlorination reaction rate is doubled to give about the same performance as those obtained at a higher copper catalyst loading. The effect of particle size distribution of the mg silicon metal on the hydrochlorination reaction rate was studied. Reaction kinetic measurements were made on 150 x 400 mesh Si and on 32 x 65 mesh Si in addition to the standard 65 x 150 mesh Si used in previous studies. Results of these experiments show that the reaction rate is essentially independent of the silicon metal particle size. Thus, the reaction occuring on the Si metal surface is the rate-determining step. Mass transfer via diffusion of reactants and product is not rate-limiting. A plausible mechanism of the hydrochlorination reaction is discussed.
Date: July 3, 1980
Creator: Mui, J.Y.P.
Partner: UNT Libraries Government Documents Department

Balanced Budget and Spending Limitations: Proposed Constitutional Amendments in the 97th Congress

Description: Expenditures and revenue limitation proposals link Federal spending and taxation to some measure of economic performance, such as the rate of economic growth or percentage levels of GNP or national income. The report presents this issue brief reviews, the various approaches to balance the budget and to impose spending limitations offered as constitutional amendments’ in the 97 congress.
Date: April 3, 1981
Creator: Schick, Allen & Strickland, Daniel P.
Partner: UNT Libraries Government Documents Department

Job Training Programs: Reauthorization and Funding Issues

Description: This paper is divided into the following sections: (1) History of Federal Employment and Training Programs; (2) Reauthorization Issues; (3) Administration Legislative and Budget Proposals; and (4) Congressional Action.
Date: January 3, 1983
Creator: Spar, Karen
Partner: UNT Libraries Government Documents Department