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hexafluoride separating unit Hi-pot

hexafluoride separating unit Hi-pot

The invention discloses a detection device for detecting sulfur hexafluoride electrical equipment fault gas. The detection device provided by the invention comprises a thermal conductivity detector, a separator and a pulsed discharge helium ion detector, wherein the separator contains a helium gas intake, a first separation unit, a second separation unit and a third separation unit, the helium ...

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  • Hexafluoride - Wikipedia

    A hexafluoride is a chemical compound with the general formula QX n F 6, QX n F 6 m−, or QX n F 6 m+.Many molecules fit this formula. An important hexafluoride is hexafluorosilicic acid (H 2 SiF 6), which is a byproduct of the mining of phosphate rock.

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  • CN102353737A - Detection device for detecting sulfur

    The invention discloses a detection device for detecting sulfur hexafluoride electrical equipment fault gas. The detection device provided by the invention comprises a thermal conductivity detector, a separator and a pulsed discharge helium ion detector, wherein the separator contains a helium gas intake, a first separation unit, a second separation unit and a third separation unit, the helium

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  • Federation of American Scientists :: Separation Theory

    The cut of the separating element is defined by the ratio between the product and feed flow: Since no material is lost in the separation process, the amount of U-235 coming into the separating unit as feed should equal the amount of U-235 coming out as product and waste.

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  • Uranium hexafluoride | UF6 - PubChem

    Fluorides (eg, uranium hexafluoride) in air are photometrically detected with an apparatus with a vertical air passage duct equipped with a flow regulator, a flow meter, a unit containing a transparent bedding material (eg, silicon dioxide), an air pump, in sequence.

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  • Gas centrifuge - Wikipedia

    Separating uranium-235 from uranium-238. The separation of uranium requires the material in a gaseous form; uranium hexafluoride (UF 6) is used for uranium enrichment. Upon entering the centrifuge cylinder, the UF 6 gas is rotated at a high speed. The rotation creates a strong centrifugal force that draws more of the heavier gas molecules

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  • Porous Organic Cages for Sulfur Hexafluoride Separation

    A series of porous organic cages is examined for the selective adsorption of sulfur hexafluoride (SF6) over nitrogen. Despite lacking any metal sites, a porous cage, CC3, shows the highest SF6/N2 selectivity reported for any material at ambient temperature and pressure, which translates to real separations in a gas breakthrough column. The SF6 uptake of these materials is considerably higher

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  • SF6 Circuit Breaker Types, Working Principles Maintenance.

    Feb 20, 2021 · The interrupter of the Sulfur hexafluoride circuit breaker comprises a fixed and movable contact shield in a chamber called the arc interruption chamber. The chamber is then connected to the gas reservoir of the circuit breaker. When the breaker senses fault, it releases the high-pressure gas from the reservoir to cool and extinguish the arc.

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  • Sulfur hexafluoride Uses, Side Effects Warnings - Drugs.com

    Jan 03, 2020 · Sulfur hexafluoride is a contrast agent that is used to improve the quality of an ultrasound. Sulfur hexafluoride is used to allow certain segments of the heart, liver, or urinary tract to be seen more clearly on an ultrasound examination. Sulfur hexafluoride may also be used for purposes not listed in this medication guide.

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  • Radioactivity : Gaseous Diffusion

    The drawback of gaseous diffusion is to consume a lot of energy. Gaseous diffusion requires 2500 kWh per "separation work unit (SWU +)" against 50 kWh for the ultracentrifugation process. The Georges Besse plant requires 3 to 4 units of the Tricastin nuclear plant to operate at maximum of its production capacities.

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  • Circuit Breaker Types Understanding the Circuit Breaker

    Sulfur Hexafluoride Circuit Breakers In this circuit breaker, Sulfur Hexafluoride (SF6) gas is used to extinguish the arc. This gas has a great extinguishing property. Many manufacturers prefer sulfur hexafluoride gas over oil and air. Sulfur hexafluoride has high electronegativity, perfect for insulation.

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  • Uranium Hexafluoride - an overview | ScienceDirect Topics

    The hexafluoride complexes of uranium, neptunium, and plutonium are well known, and have been studied extensively in the development of volatility processes for isotope separation. Uranium hexafluoride is a colorless, readily sublimable solid with a high vapor pressure (120 torr) at room temperature.

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  • Uranium enrichment - Energy Education

    The separation process here relies on the mass difference of the molecules (see gaseous diffusion above). Here, uranium hexafluoride is fed into an evacuated cylinder containing a rotor . When these rotors are spun at a high speed , the heavier 238 UF 6 collects near the walls of the cylinder while the slightly lighter 235 UF 6 collects near

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  • Gaseous Diffusion - an overview | ScienceDirect Topics

    The separation factor is small, and in the range of 1.015–1.030, between that of gaseous diffusion and gas centrifuge processes. 9.3.1.7 Chemical exchange process. Uranium isotope separation using chemical exchange processes relies on segregation of uranium compounds in separate, immiscible streams that are intimately contacted.

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  • Preparation of Plutonium Hexafluoride. Recovery of Plutonium

    Abstract. The influence of various physical factors on the rate of fluorination of solid plutonium tetrafluoride by fluorine was studied. In a horizontal oven with a circulation for pure fluorine at atmospheric pressure and 520#DEC, at a fluorine rate of 9 liters/hour, it is possible to transform 3 gm of tetrafluoride to hexafluoride with about 100% transformation and a recovery yield of over

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  • Separation Theory – Federation Of American Scientists

    The cut of the separating element is defined by the ratio between the product and feed flow: Since no material is lost in the separation process, the amount of U-235 coming into the separating unit as feed should equal the amount of U-235 coming out as product and waste.

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  • Handling and Use of Sulfur Hexafluoride Gas

    Handling and Use of Sulfur Hexafluoride Gas Page 6 of 8 b) Record date, location, and equipment nomenclature on cylinder log. 9. Return all empty cylinders and appropriate logs to the central facility. D. Removal of Sulfur Hexafluoride Gas from In-Service Equipment . 1. Prior to removal of gas, check the gas compartment and associated devices for

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  • Hexafluoride | Definition of Hexafluoride by Merriam-Webster

    Hexafluoride definition is - a fluoride containing six atoms of fluorine in the molecule.

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  • Reduction of uranium hexafluoride adsorbed on sodium fluoride

    Nov 25, 2010 · The problem of the formation of uranium residue in spent sodium fluoride sorbent is studied. The mechanisms of the formation of un-desorbed uranium residue with thermal desorption of uranium hexafluoride from the surface sodium fluoride are examined. It is proved that hydrolysis of sorbed and gaseous uranium hexafluoride under the conditions of sublimate-separation production is impossible

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  • THE TRANSFER OF PLUTONIUM HEXAFLUORIDE IN THE VAPOR PHASE

    Experiments were carried out to determine the extent and rate of separation of mixtures of uranium hexafluoride and plutonium hexafluoride by selective thermal decomposition. Gaseous mixtures of uranium hexafluoride, plutonium hexafluoride, and helium were circulated for varying lengths of time through nickel vessels packed with nickel wool at

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  • Solvay Special Chemicals

    sulphur hexafluoride Electrical engineering The use of sulphur hexafluoride in place of solid and liquid insulators offers a number of important advantages: High dielectric strength at lower cost When pressurized, sulphur hexafluoride can exhibit the same dielectric strength as liquid insulators. However, the per-unit-

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  • UX-30 PERFORMANCE TESTING

    Five separate Drop Tests (two Puncture and three Free Drop Tests) were performed. Each test used a full-scale production unit UX-30 overpack along with a full size ANSI compliant Model 30B cylinder (the same overpack and cylinder were used for two or more tests) as the Test Unit.

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  • US5346684A - Recovery of anhydrous hydrogen fluoride from

    A method is provided for recovering an anhydrous hydrogen fluoride product from uranium hexafluoride gas by initially reacting the uranium hexafluoride in a primary reactor with steam to produce a uranyl fluoride intermediate and a gaseous mixture of hydrogen fluoride and water.

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  • Sulfur hexafluoride (SF6) Recycling Program for Out of

    SF6 Emissions Reduction Partnership • Exelon has participated in the SF6 emissions reduction partnership with U.S. EPA since 1998. – ComEd and PECO have approximately 200,000 lbs of SF6 in service within

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  • Uranium Enrichment | NRC.gov

    CompositionUsesSafetyManagementOperationIndustryResearchTechnologyWhen uranium is mined, it consists of approximately 99.3% uranium-238 (U238), 0.7% uranium-235 (U235), and < 0.01% uranium-234 (U234). These are the different uranium isotopes. Isotopes of uranium contain 92 protons in the atomcenter or nucleus. (The number of protons in the nucleus is what makes the atoms \\"uranium.\\") The U238 atoms contain 146 neutrons, the U235 atoms contain 143 neutrons, and the U234 atoms contain only 142 neutrons. The total number of protons plus neutrons gives the atomic mass of each isotope that is 238, 235, or 234, respectively. On an atomic level, the size and weight of these isotopes are slightly different. This implies that with the right equipment and under the right conditions, the isotopes can be separated.

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  • Production of uranium hexafluoride - Atomic Energy

    separating the uranium hexafluoride from unreacted fluorine gas and the diluent gas by crystallizing out the uranium hexafluoride from the remaining gases. 13. A process according to claim 12, wherein the crystallization is effected by passing the gaseous product from the reactor through at least one cold trap which is at a temperature below

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  • 8: Uranium Production - Chemistry LibreTexts

    This unit addresses the metallurgy of uranium, its conversion into gaseous uranium hexafluoride required for enrichment processes, and the fabrication of fuel rods from the enriched uranium hexafluoride. The enrichment processes are covered in a separate unit.

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  • What is High-Assay Low-Enriched Uranium (HALEU)? | Department

    Apr 07, 2020 · By definition, HALEU is enriched between 5% and 20% and is required for most U.S. advanced reactors to achieve smaller designs that get more power per unit of volume. HALEU will also allow developers to optimize their systems for longer life cores, increased efficiencies and better fuel utilization.

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  • Uranium Marketing Annual Report

    Uranium Purchases and PricesNew and Future Uranium ContractsUranium Feed, Enrichment Services, Uranium LoadedUranium Foreign Purchases/Sales and InventoriesOwners and operators of U.S. civilian nuclear power reactors (civilian owner/operators, or COOs) purchased a total of 40 million pounds U3O8e (equivalent) of deliveries from U.S. suppliers and foreign suppliers during 2018, at a weighted-average price of $38.81 per pound U3O8e. The 2018 total of 40 million pounds U3O8e was 6% lower than the 2017 total of 43 million pounds U3O8e. The 2018 weighted-average price of $38.81 per pound U3O8e was virtually the same as the 2017 weighted-average price of $38.80 per pound U3O8e (Table 1). Nearly 10% of the 40 million pounds U3O8e delivered in 2018 was U.S.-origin uranium at a weighted-average price of $45.26 per pound. Foreign-origin uranium accounted for the remaining 90% of deliveries at a weighted-average price of $38.11 per pound (Table 2). Canadian-origin uranium and Australian-originan uranium together accounted for 42% of total uranium purchased by U.S. COOs in 2018. Uranium originating in Kazakhstan, Russia, and Uzbekistan accounted f...

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  • SF6 Circuit Breakers - Construction, Types and Working

    In an SF6 Circuit breaker, sulphur hexafluoride gas is used as the arc quenching medium. The sulphur hexafluoride gas (SF6) is an electronegative gas and has a strong tendency to absorb free electrons. The contacts of the breaker are opened in a high-pressure flow sulphur hexafluoride (SF6) gas and an arc is struck between them.

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