Filters
Results 1 - 10 of 3827
Results 1 - 10 of 3827.
Search took: 0.028 seconds
Sort by: date | relevance |
AbstractAbstract
[en] Since the end of the Cold War, a number of non-nuclear weapon states have pursued enrichment of uranium by gas centrifuges. At the moment, the most challenging case is that of Iran, who has continued to build their gas centrifuge plant. Iran contends they only want to make enriched fuel for nuclear reactors, but the line between civil and military enrichment activities is very thin. The IAEA and Western countries are trying to find ways to assure that Iran does not produce uranium enriched to weapons grade levels. In this talk, I describe gas centrifuges and cascades of gas centrifuges, and I discuss the challenges of safeguarding enrichment plants. I also discuss possibilities for thickening the thin line. These efforts are of utmost importance, not only for Iran, but for other nations that may want to pursue the nuclear fuel cycle in the future
Primary Subject
Source
73. Annual meeting with ordinary general meeting of the DPG and 2009 Spring meeting of the Section AMOP of the professional associations atomic physics, mass spectrometry, molecule physics, quantum optics and photonics combined with professional associations environmental physics as soon as the working groups equal opportunities, energy, information, young DPG, physics and disarmament; 73. Jahrestagung mit Ordentlicher Mitgliederversammlung der DPG und Fruehjahrstagung 2009 der Sektion AMOP bestehend aus den Fachverbaenden Atomphysik, Massenspektronomie, Molekuelphysik, Quantenoptik und Photonik zusammen mit dem Fachverband Umweltphysik sowie den Arbeitskreisen und Arbeitsgruppen Chancengleichheit, Energie, Information, Junge DPG, Physik und Abruestung; Hamburg (Germany); 2-6 Mar 2009; Available from http://www.dpg-verhandlungen.de; Session: AGA 4.4 Do 16:30; No further information available; Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 44(1)
Record Type
Journal Article
Literature Type
Conference
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; (Hamburg 2009 issue); [1 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] The technical information presented herein emphasizes the uniqueness of the centrifugal separations methodology and pertinent theory for various kinds of centrifugation. The topics are arranged according to gas, liquid, and solid phases, in the order of increasing densities. Much space is devoted to liquid centrifugation because of the importance of this technique in chemical and biological laboratories. Many separational and characterizational examples are illustrated in detail. The material has been divided into 7 chapters entitled: 1) Introduction, 2) Basic Theory of Centrifugation, 3) Gas Centrifuges, 4) Preparative Liquid Centrifuges, 5) Analytical Liquid Centrifuges, 6) Liquid Centrifuges in Practice, and 7) Mechanical Separations by Centrifuges. Separate abstracts have been prepared for each chapter except the introduction
Primary Subject
Secondary Subject
Source
Techniques of chemistry, Volume XVI; 1981; 484 p; John Wiley and Sons, Inc; New York, NY; ISBN 0-471-05564-6; 

Record Type
Book
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A machine connecting in the same enclosure several centrifuges in parallel is claimed. Application is made to isotope separation from fluids
[fr]
L'invention se rapporte a une machine permettant de grouper dans une meme enceinte plusieurs centrifugeuses montees en paralleleOriginal Title
Multi machine de centrifugation
Primary Subject
Secondary Subject
Source
2 Jun 1989; 16 Jan 1973; 9 p; FR PATENT DOCUMENT 2623729/A/; FR PATENT APPLICATION 7301466; Available from Institut National de la Propriete Industrielle, Paris (FR); Application date: 16 Jan 1973
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The United States government has announced that the next plant to be built in this country for the enrichment of U-235 will be a gas centrifuge plant rather than a gaseous diffusion plant. The important aspects of the theory of isotope separation for these two processes are reviewed, and the differences between them are delineated. The advantages and disadvantage of the centrifuge process are enumerated. 3 refs
Primary Subject
Record Type
Journal Article
Journal
AIChE Symposium Series; ISSN 0065-8812;
; v. 76 p. 82-88

Country of publication
ACTINIDE NUCLEI, ALPHA DECAY RADIOISOTOPES, CENTRIFUGES, EVEN-ODD NUCLEI, HEAVY NUCLEI, INDUSTRIAL PLANTS, ISOMERIC TRANSITION ISOTOPES, ISOTOPE SEPARATION PLANTS, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEAR FACILITIES, NUCLEI, RADIOISOTOPES, SEPARATION PROCESSES, URANIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The gas centrifuge is not only considered more than a match for lasers for at least the rest of this century, but also the particular technical characteristics of the process make it especially suitable for re-enriching reprocessed uranium. (author)
Primary Subject
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A review is given of the three main areas where flexibility is needed in the design of centrifuge enrichment plants. These are: the need to cope with market requirements, the limitations imposed by currently available centrifuges and ever advancing centrifuge technology. Details of BNFL's experience with centrifuge enrichment at Capenhurst are presented. (U.K.)
Primary Subject
Record Type
Journal Article
Journal
Nucl. Energy; ISSN 0140-4067;
; v. 21(4); p. 215-221

Country of publication
ACTINIDE NUCLEI, ALPHA DECAY RADIOISOTOPES, CENTRIFUGATION, CENTRIFUGES, EVEN-ODD NUCLEI, HEAVY NUCLEI, INDUSTRIAL PLANTS, ISOMERIC TRANSITION ISOTOPES, ISOTOPE SEPARATION PLANTS, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEAR FACILITIES, NUCLEI, RADIOISOTOPES, SEPARATION PROCESSES, URANIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The unified expression of the separation power and the overall separation factor, the cut and the concentration of the feed were derived. The influence of the three factors to the separation was described also. The results showed that the separation power increase along with the overall separation factor increase, the separation power can acquire the maximum value when the cut is about 0.5, the separation power is lower in the high feed concentration and the low feed concentration, and the maximum when the feed concentration is about 0.5. (authors)
Primary Subject
Source
11 figs., 13 refs.
Record Type
Journal Article
Journal
Journal of Isotopes; ISSN 1000-7512;
; v. 21(3); p. 129-134

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] To ensure that the latest technical innovations can be rapidly incorporated, centrifuge development in the Urenco organization is carried out in different phases simultaneously on different generations of machines. This system has led to progressively increased outputs and reduced specific costs, and with the further known potential available, is expected to maintain Urenco's competitiveness throughout the 1990s. The process of separating isotopes by centrifuge is described. (author)
Primary Subject
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Fricke, K.E.; Jones, W.D.; Burdette, E.G.
Oak Ridge Gaseous Diffusion Plant, TN (USA); Tennessee Univ., Knoxville (USA). Dept. of Civil Engineering1984
Oak Ridge Gaseous Diffusion Plant, TN (USA); Tennessee Univ., Knoxville (USA). Dept. of Civil Engineering1984
AbstractAbstract
[en] A floor module used to support a centrifuge machine is a steel framework embedded in a 2-ft (610-mm) thick concrete slab. This steel framework is made up of four cylindrical hollow sockets tied together with four S-beams to form a square pattern. In the event of a centrifuge machine wreck, large forces are transmitted from the machine to the corner sockets (through connecting steel lugs) and to the concrete slab. The floor modules are loaded with a combination of torsion and shear forces in the plane of the floor slab. Precisely how these wreck loads are transmitted to, and reacted by, the floor modules and the surrounding concrete was the scope of a series of full-scale tests performed at the DOE Gas Centrifuge Enrichment Plant (GCEP) located near Piketon, Ohio. This report describes the tests and the results of the data reduction to date
Primary Subject
Secondary Subject
Source
1984; 8 p; 5. American Society of Civil Engineers/Engineering Mechanics specialty conference; Laramie, WY (USA); 1-3 Aug 1984; CONF-840833--7; Available from NTIS, PC A02/MF A01; 1 as DE84014875
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The description is given of a component for isotope separation by static centrifugation, the characteristic of which is that the gas, of single chemical composition, in other words without a diluting gas mixture, passes into a sonic collar then into a symmetrical supersonic diffuser where it acquires a uniform and rectilinear velocity above or very much above the speed of sound before going into its curved trajectory
[fr]
On decrit un element de separation isotopique par centrifugation statique caracterise en ce que le gaz, de composition chimique unique, c'est-a-dire sans melange de gaz diluant, passe dans un col sonique puis dans un diffuseur supersonique symetrique ou il prend une vitesse uniforme et rectiligne superieure ou tres superieure a la vitesse du son avant d'effectuer son trajet courbeOriginal Title
Procede et element de separation isotopique
Primary Subject
Source
19 Apr 1974; 5 p; FR PATENT DOCUMENT 2324349/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |