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Reclamation of Contaminated Diffusion Pump Oil and Removal of Tuballoy Therefrom

Description: Abstract: The possibilities for the removal of tuballoy from diffusion pump oil and reclamation of the oils for reuse are discussed. The report includes specifications of practical equipment, operating instructions, photographs and diagrams of the necessary construction details.
Date: December 6, 1945
Creator: Lee, J. E. Jr. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recovery of Uranium From Oil Distillation Residue

Description: Abstract: The complete development of an effective process for recovery of the uranium in the residues from distillation of used Kinney and diffusion pump oils or similar oils is described. After considerable study and experimentation with several methods, a successful procedure has been developed. The recommended procedure embodies solution of the residues in trichlorethylene followed by extraction with nitric acid. Recovery of uranium is better than 99 percent effective and the method may be … more
Date: February 24, 1947
Creator: Lee, J. E.; Aikin, L. M. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reclamation of Contaminated Kinney and Diffusion Pump Oils and Removal of Uranium Therefrom

Description: Abstract: Test distillations were made with Kinney and diffusion pump oils under vacuum in order to determine accurately the temperature range over which satisfactory distillate may be collected. Also recommendations are made as to the most advisable type of heating equipment necessary to produce the required heat and maintain the desired temperature. In addition, several important refinements in the distillation equipment were checked for operational characteristics and for their efficiency in… more
Date: March 10, 1947
Creator: Lee, J. E. Jr.; Aikin, L. M. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recovery of Uranium From Contaminated Precipitron Oil

Description: Abstract: The distillation and residue extraction recovery procedures developed for the recovery of uranium from Kinney and diffusion pump oil, were applied to contaminated precipitron oil. The effectiveness and advisability of using the method, in whole or in part, is discussed, and various recommendations for processing this particular type of oil are presented. Additional contaminating substances present in this type of oil added to the complexity of the problem but a satisfactory recovery p… more
Date: April 17, 1947
Creator: Lee, J. E.; Aikin, L. M. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

P-10 stack monitoring

Description: On June 14, 1950, an aluminum Kanne Chamber on the 108-B vacuum discharge line was placed in operation. The vacuum pump discharge line chamber has a very poor reputation for two reasons: 1. An apparent hysteresis effect which shows as a high reading after a slug of gas has passed through it, and 2. Failure to return to background current. Cause of the hysteresis effect may be the distribution of tritium in the vacuum pump discharge gas. The rate of gas flow through the Kanne chamber is approxim… more
Date: June 26, 1950
Creator: Eisenacher, P. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sparking and X-Rays in a Mercury Pumped Vacuum System (Excerpt From Quarterly Report for March, April, May, 1952 - Linac Group - UCRL-1903)

Description: Sparking: The most obvious conclusion about 200 m.c. sparking is that it follows strictly surface gradient and does not depend upon total voltage. In order to arrive at this conclusion, a quantitative means for measuring the probability of sparking had to be constructed, since it was clearly evident that the d.c. notion of sparking was inadequate.
Date: August 1952
Creator: Kilpatrick, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Technology of Large Mercury-Pumped Vacuum Systems

Description: From Abstract: "This paper deals with the vacuum design considerations of large systems involving the application of 8-inch through 32-inch mercury diffusion pumps. The selection, rating, and optimization of pumps are discussed along with the closely allied problem of baffling the pumps. The materials of construction and methods of fabrication to avoid subsequent system contamination are dealt with in detail. System interlocking and its associated instrumentation are illustrated by referral to … more
Date: November 9, 1955
Creator: Smith, Hugh R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Use of an Electronic High Vacuum Pump on Various Types of Mass Spectrometers

Description: A commercially available electronic high vacuum pump has bee tested on various types of mass spectrometers used at the Oak Ridge Gaseous Diffusion Plant. Considerable savings in operating and maintenance costs can be realized from the use of this pump. the greatest savings result from the elimination of the cold trap required for the diffusion pump whether it is cooled by liquid nitrogen or by mechanical refrigeration. additional savings results from the fact that the pump currently is usually … more
Date: October 9, 1959
Creator: High, R. D. & Schede, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of Molecular Flow Conductance

Description: Abstract. A method is described for measuring the molecular flow conductance of scale models of complete diffusion pump systems. Results are given in terms of Clausing's factor P, defined by P= F/F(0), where F is the net volume flow rate through a geometry and F(0) is the volume flow rate of gas striking the orifice of the geometry. Use of the factor P allows prediction of the conductance of the full-scale system represented by the model. Experimental and theoretical data are presented for stra… more
Date: August 1960
Creator: Levenson, L. L. (Leonard Lionel); Milleron, Norman. & Davis, Donald H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pumping behavior of sputter ion pumps

Description: The ultrahigh vacuum requirements of ISABELLE is obtained by distributed pumping stations. Each pumping station consists of 1000 l/s titanium sublimation pump for active gases (N/sub 2/, H/sub 2/, O/sub 2/, CO, etc.), and a 20 l/s sputter ion pump for inert gases (methane, noble gases like He, etc.). The combination of the alarming production rate of methane from titanium sublimation pumps (TSP) and the decreasing pumping speed of sputter ion pumps (SIP) in the ultrahigh vacuum region (UHV) lea… more
Date: unknown
Creator: Chou, T S & McCafferty, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TFTR vacuum system considerations

Description: The Tokamak Fusion Test Reactor (TFTR) vacuum system has been designed using conventional ultrahigh vacuum (UHV) components and technology. This report describes the rationale and motivation that went into its design. Mercury diffusion pumps were selected over other existing high vacuum pumps. A system of four pumps is designed to provide a base pressure of less than or equal to 8 x 10/sup -6/ Pa and a low impurity level within the torus. These features will be accomplished without in situ bake… more
Date: November 1, 1975
Creator: Lange, W. J.; Gorman, J. G.; Green, D. & Sink, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental studies of zirconium/aluminum getter pumps

Description: Getters of the type to be utilized as tritium pumps in the foreline of the TFTR torus vacuum system, and presumably in those of the neutral beam injector arms, were evaluated using hydrogen and deuterium. The capacity and speed as rated by the manufacturer (SAES) are found to be conservative. In addition, the getters are shown to continue to pump hydrogen even in the presence of chemically active, impurity gases, provided the getter temperature is maintained at >300/sup 0/C. Since hydrogen pump… more
Date: December 1, 1975
Creator: Lange, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transfer operations with tritium -- A review

Description: Controlled thermonuclear reactors will involve pumping operations with tritium that may involve pressures ranging from submillipascals to megapascals. A variety of pumps is available that can cover portions of this range, and these can be staged to cove the entire pressure range. Some of these pumps can be adapted to virtually any size requirement currently anticipated. Special attention must be paid to operating features and construction materials.
Date: December 31, 1975
Creator: Folkers, C. L. & Gede, V. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Behavior of titanium sublimation and sputter ion pumps in the 10/sup -11/ torr range

Description: In the proposed Intersecting Storage Accelerator, ISABELLE, 1200 pumping stations will be used to keep two 3 km long rings at a pressure of 1 x 10/sup -11/ torr. It is clear that in such a large system, price and simplicity are very important. A study was made on a well instrumented room temperature vacuum system with a surface area of 6000 cm/sup 2/ and a volume of 17 l, pumped by a Ti-ball and an ion pump. Total pressure and residual gas composition were measured by a Helmer gauge and a quadr… more
Date: January 1, 1976
Creator: Halama, H. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cryosorption vacuum pumping of deuterium, helium and hydrogen at 4. 2/sup 0/K for CTR applications

Description: The Excalibar CVR 1106 vacuum pump which is prototypical of the type of pump normally proposed for plasma recovery systems is described. The pump contains a 320 cm/sup 2/ cryosorption panel which is cooled by intimate contact with liquid helium. Pumping speeds were measured for deuterium, helium, and hydrogen at maximum operating pressures. The results of the deuterium and hydrogen studies are presented. (MOW)
Date: January 1, 1976
Creator: Fisher, P. W. & Watson, J. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Current CTR-related tritium handling studies at ORNL

Description: The Oak Ridge National Laboratory has a comprehensive program concerned with plasma fuel recycle, tritium recovery from blankets, and tritium containment in fusion reactors. Two studies of most current interest are investigations of cryosorption pumping of hydrogen isotopes and measurements of tritium permeation rates through steam generator materials. Cryosorption pumping speeds have been measured for hydrogen, deuterium, and helium at pressures from 10/sup -8/ torr to 3 x 10/sup -3/ torr. Per… more
Date: January 1, 1976
Creator: Watson, J. S.; Bell, J. T.; Clinton, S. D.; Fisher, P. W.; Redman, J. D.; Smith, F. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electrical, cryogenic and systems design of a dc superconducting power transmission line

Description: The electrical, cryogenic, and systems design concepts for a dc superconducting power transmission line are discussed. The line consists of a hollow-core flexible coaxial cable, using multifilamentary or tape Nb/sub 3/Sn superconductor and wrapped tape dielectric, within a rigid cryogenic envelope. Cryogen flows through the core, is expanded in a turbine and returns over the outer cable surface. The concept is applied to power levels of 1 to 10 GW and for a range of line voltages and maximum di… more
Date: January 1, 1976
Creator: Laquer, H. L.; Dean, J. W. & Chowdhuri, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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