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Results 1 - 10 of 1891.
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AbstractAbstract
[en] This invention concerns the plant and chemical processes and in particular a plant and processes where the atmosphere is contained and continually placed in close circuit flow. Such a plant can be used for processes where the atmosphere of the plant must be prevented from going outside, such as in the case of a plant processing nuclear fuel, like a plant in which irradiated nuclear fuels are reprocessed or in which fuels containing plutonium are made
[fr]
La presente invention concerne l'usine et des procedes de chimie et, en particulier, une usine et des procedes ou l'atmosphere est confinee et continuellement mise en circulation en circuit ferme. Une telle usine peut servir pour des procedes ou il faut eviter la sortie de l'atmosphere de l'usine, comme dans le cas d'une usine ou l'on traite du combustible nucleaire, comme une usine dans laquelle on retraite des combustibles nucleaires irradies ou dans laquelle on faconne des combustibles contenant du plutoniumOriginal Title
Procede de maintien en circulation d'une atmosphere en circuit ferme, et son application a une usine de retraitement de combustible nucleaire
Primary Subject
Source
6 Apr 1978; 9 p; FR PATENT DOCUMENT 2386702/A/; Available from Institut National de la Propriete Industrielle, Paris (France); Priority claim: 7 Apr 1977, UK.
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Patent
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Meeks, R.F.
General Electric Co., St. Petersburg, FL (USA). Neutron Devices Dept1979
General Electric Co., St. Petersburg, FL (USA). Neutron Devices Dept1979
AbstractAbstract
[en] Several types of clean rooms are commonly in use. They include the conventional clean room, the horizontal laminar flow clean room, the vertical laminar flow clean room and a fourth type that incorporates ideas from the previous types and is known as a clean air bench or hood. These clean rooms are briefly described. The origin of contamination and methods for controlling the contamination are discussed
Primary Subject
Source
1979; 12 p; 19. annual meeting of the institute of environmental sciences; Seattle, WA, USA; 29 Apr - 2 May 1979; CONF-790445--5; Available from NTIS., PC A02/MF A01
Record Type
Report
Literature Type
Conference
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Benedix, C.P.
California Univ., Livermore (USA). Lawrence Livermore Lab1980
California Univ., Livermore (USA). Lawrence Livermore Lab1980
AbstractAbstract
[en] This paper describes the process of defining technical requirements for a major Department of Energy Research and Development Facility and subsequent development of construction specifications for the clean spaces in that facility. The organizational interactions between technical client, Engineering and Construction elements are described. The importance of an interdisciplinary team approach is stressed. A brief description of the SHIVA Laser and NOVA Laser Clean Spaces is included to indicate the scope of the facility undertaking. A number of potential pitfalls are discussed that may be helpful to designers of new facilities
Primary Subject
Source
Feb 1980; 21 p; 26. annual technical meeting of the Institute for Environmental Sciences; Philadelphia, PA, USA; 11 - 14 May 1980; CONF-800517--3; Available from NTIS., PC A02/MF A01
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Report
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Conference
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AbstractAbstract
[en] The specification relates to the general design and installation of electrical services required in unshielded glove boxes in which atmospheres of air, argon or nitrogen etc. may exist either temporarily or permanently. The specification does not apply to electrical services for glove boxes with flammable explosive atmospheres. (author)
Primary Subject
Source
Feb 1978; 13 p; Provisional specification.
Record Type
Report
Literature Type
Standard
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Cadrot, J.
Etablissement Jacomex, 93 - Livry-Gargan (France)1990
Etablissement Jacomex, 93 - Livry-Gargan (France)1990
AbstractAbstract
[en] In the gas main are placed 2 series of specific gas purifiers in parallel. Pressure is controlled with a buffer tank two three way solenoid value upstream and down stream a compressor and a supercharger. A checking board allows continuous monitoring of circuit tightness
[fr]
Dans une canalisation principale sont placees en parallele deux series d'epurateurs specifiques. La pression est regulee au moyen d'un reservoir tampon, d'electrovannes trois voies placees en amont et en aval d'un compresseur et d'un surpresseur. Une centrale de controle permet de surveiller en continu l'etat d'etancheite du circuitOriginal Title
Circuit ferme purificateur et regulateur de pression pour boite a gants sous atmosphere de gaz neutre
Primary Subject
Source
27 Apr 1990; 26 Oct 1988; 16 p; FR PATENT DOCUMENT 2638276/A/; FR PATENT APPLICATION 8813966; Available from Institut National de la Propriete Industrielle, Paris (France); Application date: 26 Oct 1988
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Patent
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Schluckner, C.; Gaber, C.; Demuth, M.; Forstinger, S.; Prieler, R.; Hochenauer, C., E-mail: christoph.schluckner@tugraz.at2018
AbstractAbstract
[en] Highlights: • Flexible, experimentally validated scale formation model for two different steels. • Scale formation kinetics for air-fuel, oxygen enriched and oxy-fuel combustion. • Prediction of local and temporal scale formation rates during steel reheating. • Local oxidizing species at steel surface determine the scale formation kinetics. • Oxy-fuel combustion decreased reheating time and lowered scale losses. This work presents a geometry-flexible, spatially resolved scale formation model for a mild and a tempering steel in high temperature reheating furnaces. Corresponding oxidation kinetics in air-fuel, oxygen enriched and oxy-fuel combustion atmospheres were developed to predict scale layer formation rates with high resolution in time and space. The results demonstrate the influence of different combustion atmospheres on the scale formation behaviour and highlight the local effects of oxidizing species. Finally, it was shown that oxygen enhanced and oxy-fuel combustion can be effectively used in reheating furnaces to minimize material losses, increase both productivity and efficiency and simultaneously reduce costs.
Primary Subject
Source
S1359431118323354; Available from http://dx.doi.org/10.1016/j.applthermaleng.2018.08.010; Copyright (c) 2018 Elsevier Ltd. All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Picard, Paul.
Compagnie pour l'Etude et la Realisation de Combustibles Atomiques (CERCA), 75 - Paris (France)1974
Compagnie pour l'Etude et la Realisation de Combustibles Atomiques (CERCA), 75 - Paris (France)1974
AbstractAbstract
[en] The process described is for the hot assembly of similar or dissimilar metallic, non-metallic or partially metallic components, without direct contact with a cleaning flux by means of a weld metal or alloy having a melting point lower than that of the most easily melted component. The components to be assembled as well as the weld metal or alloy are brought to a temperature equal at least to that causing the weld metal or alloy to melt, in an enclosure substantially empty of air and containing one or several free or combined halogens of which at least a proportion is in a gaseous state, or passes into it, during at least part of the heating time
[fr]
On presente un procede d'assemblage a chaud d'elements metalliques, non metalliques ou partiellement metalliques semblables ou differents, sans contact direct avec un flux decapant au moyen d'un metal ou alliage d'apport a point de fusion inferieur a celui de l'element le plus fusible. Les elements a assembler, ainsi que le metal ou alliage d'apport, sont portes a une temperature au moins egale a celle qui provoque la fusion du metal ou alliage d'apport, dans une enceinte substantiellement videe d'air, contenant un ou plusieurs halogenes a l'etat libre ou combine, dont une fraction au moins est a l'etat gazeux, ou passe a l'etat gazeux, pendant une partie au moins du temps de chauffageOriginal Title
Procede d'assemblage a chaud
Primary Subject
Source
13 Dec 1974; 13 p; FR PATENT DOCUMENT 2294014/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
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Poindexter, A.M.
Westinghouse Electric Corp., Pittsburgh, Pa. (USA)1977
Westinghouse Electric Corp., Pittsburgh, Pa. (USA)1977
AbstractAbstract
[en] The invention concerns the flushing gas supply equipment for a nuclear reactor, particularly the incoming pipework in the containment lid of the reactor vessel. Pipework connections across the plane of separation of the supporting ring construction and beyond the rotating sealing plates are avoided by using the plane of separation as connections. All constructional details are described extensively. (UWI)
[de]
Die Erfindung betrifft die Spuelgasversorgungseinrichtung fuer einen Kernreaktor, insbesondere die Zuleitungen im Behaelterdeckel des Reaktorbehaelters. Man vermeidet Leitungsverbindungen ueber die Trennfugen der Tragring-Konstruktionen und der drehbaren Verschlussplatten hinweg, indem die Trennfugen selbst als Leitungen benutzt werden. Ausfuehrlich sind alle konstruktiven Einzelheiten beschrieben. (UWI)Original Title
Kernreaktor
Primary Subject
Source
17 Nov 1977; 28 p; DE PATENT DOCUMENT 2718252/A/; Also available from Dt. Patentamt, Muenchen (FRG)
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Patent
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AbstractAbstract
[en] Uraninite is the most common uranium mineral, which, because of chemical and structural similarities to synthetic UO2, is a useful natural analogue for UO2 in spent fuel. Uraninite, however, contains 'impurities' such as Pb, Ca, Si, U6+, Th, Zr, and lanthanides. These affect the thermodynamic properties of uraninite, the rate of uraninite alteration, and the composition of the corrosion products. Uraninite can contain a significant amount of radiogenic Pb, and the Pb-uranyl oxide hydrates (Pb-UOH) are the most common corrosion products formed by the oxidative alteration of Pb-bearing uraninites. Incongruent alteration of the Pb-UOHs in natural waters produces increasingly Pb-enriched uranyl phases, effectively reducing the amount of U lost from the corrosion rind. This is not true of other uranyl oxide hydrates, such as schoepite, UO3 x 2H2O, or becquerelite, CaU6O19 x 11H2O, which can dissolve completely under similar geochemical conditions. The most common end product of Pb-UOH alteration is curite. Curite may provide surface nucleation sites for certain uranyl phosphates, thereby enhancing their formation. Uranyl phosphates are generally less soluble than other uranyl phases. In the absence of Pb, schoepite and becquerelite are the common initial corrosion products. The reaction path for the alteration of Pb-free uraninite results in the formation of uranyl silicates, which are generally more soluble than the uranyl phosphates. Thus, the long-term oxidation behavior for ancient, Pb-bearing uraninite is different from young, Pb-free uraninite. (orig./MM)
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Journal Article
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Gómez Pallarés, M.
Universidad de Valladolid, Palencia (Spain)1997
Universidad de Valladolid, Palencia (Spain)1997
AbstractAbstract
No abstract available
Original Title
Métodos de conservación para champiñones (''agaricus bisporus'') en fresco
Primary Subject
Source
FAO/AGRIS record; ARN: ES19970094562; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Alimentacion, Equipos y Tecnologia; ISSN 0212-1689;
; (1997 issue); p. 39-44

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