The Nuclear Fuel Report: Expanded Summary
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Table 2.Iii.1. Fissionable Isotopes1
FISSIONABLE ISOTOPES Charles P. Blair Last revised: 2012 “While several isotopes are theoretically fissionable, RANNSAD defines fissionable isotopes as either uranium-233 or 235; plutonium 238, 239, 240, 241, or 242, or Americium-241. See, Ackerman, Asal, Bale, Blair and Rethemeyer, Anatomizing Radiological and Nuclear Non-State Adversaries: Identifying the Adversary, p. 99-101, footnote #10, TABLE 2.III.1. FISSIONABLE ISOTOPES1 Isotope Availability Possible Fission Bare Critical Weapon-types mass2 Uranium-233 MEDIUM: DOE reportedly stores Gun-type or implosion-type 15 kg more than one metric ton of U- 233.3 Uranium-235 HIGH: As of 2007, 1700 metric Gun-type or implosion-type 50 kg tons of HEU existed globally, in both civilian and military stocks.4 Plutonium- HIGH: A separated global stock of Implosion 10 kg 238 plutonium, both civilian and military, of over 500 tons.5 Implosion 10 kg Plutonium- Produced in military and civilian 239 reactor fuels. Typically, reactor Plutonium- grade plutonium (RGP) consists Implosion 40 kg 240 of roughly 60 percent plutonium- Plutonium- 239, 25 percent plutonium-240, Implosion 10-13 kg nine percent plutonium-241, five 241 percent plutonium-242 and one Plutonium- percent plutonium-2386 (these Implosion 89 -100 kg 242 percentages are influenced by how long the fuel is irradiated in the reactor).7 1 This table is drawn, in part, from Charles P. Blair, “Jihadists and Nuclear Weapons,” in Gary A. Ackerman and Jeremy Tamsett, ed., Jihadists and Weapons of Mass Destruction: A Growing Threat (New York: Taylor and Francis, 2009), pp. 196-197. See also, David Albright N 2 “Bare critical mass” refers to the absence of an initiator or a reflector. -
+ 2020 Annual Information Form
Denison Mines Corp. 2020 Annual Information Form March 26, 2021 ABOUT THIS ANNUAL INFORMATION FORM This annual information form (“AIF”) is dated March 26, Table of Contents 2021. Unless stated otherwise, all of the information in this AIF is stated as at December 31, 2020. About this AIF .................................... 1 About Denison ................................... 6 This AIF has been prepared in accordance with Canadian Developments over the Last Three securities laws and contains information regarding Years ................................................. 8 Denison’s history, business, mineral reserves and The Uranium Industry ........................ 17 resources, the regulatory environment in which Denison Mineral Resources and Reserves 24 does business, the risks that Denison faces and other Mineral Properties ............................. 27 important information for Shareholders. Athabasca Exploration: Sampling, Analysis and Data Verification ........... 102 This AIF incorporates by reference: Denison Operations ........................... 107 Manager of UPC ................................ 111 Denison’s management discussion and analysis (“MD&A”) for the year ended December 31, 2020, Denison Closed Mines Group ........... 112 Environmental, Health, Safety and Denison’s audited consolidated financial Sustainability Matters ........................ 112 statements for the year ended December 31, 2020, Government Regulation .................... 114 Risk Factors ...................................... 120 both of which -
小型飛翔体/海外 [Format 2] Technical Catalog Category
小型飛翔体/海外 [Format 2] Technical Catalog Category Airborne contamination sensor Title Depth Evaluation of Entrained Products (DEEP) Proposed by Create Technologies Ltd & Costain Group PLC 1.DEEP is a sensor analysis software for analysing contamination. DEEP can distinguish between surface contamination and internal / absorbed contamination. The software measures contamination depth by analysing distortions in the gamma spectrum. The method can be applied to data gathered using any spectrometer. Because DEEP provides a means of discriminating surface contamination from other radiation sources, DEEP can be used to provide an estimate of surface contamination without physical sampling. DEEP is a real-time method which enables the user to generate a large number of rapid contamination assessments- this data is complementary to physical samples, providing a sound basis for extrapolation from point samples. It also helps identify anomalies enabling targeted sampling startegies. DEEP is compatible with small airborne spectrometer/ processor combinations, such as that proposed by the ARM-U project – please refer to the ARM-U proposal for more details of the air vehicle. Figure 1: DEEP system core components are small, light, low power and can be integrated via USB, serial or Ethernet interfaces. 小型飛翔体/海外 Figure 2: DEEP prototype software 2.Past experience (plants in Japan, overseas plant, applications in other industries, etc) Create technologies is a specialist R&D firm with a focus on imaging and sensing in the nuclear industry. Createc has developed and delivered several novel nuclear technologies, including the N-Visage gamma camera system. Costainis a leading UK construction and civil engineering firm with almost 150 years of history. -
Per-10 Basic Information Relating to Uranium
PER-10 1 BASIC INFORMATION RELATING TO URANIUM-ENRICHMENT CALCULATIONS AND FUEL REQUIREMENTS FOR NUCLEAR POWER REACTORS by K.T. Brown m 3 ATOMIC ENERGY BOARD Pelindaba PRETORIA Republic of South Africa February 1977 :::: : =:::""""""::::::;::: i:::""""""" :::::::::i:::::::::::::::H:::""»"""::::::::::::::::: BASIC INFORMATION RELATING TO URANIUM-ENRICHMENT CALCULATIONS AND FUEL REQUIREMENTS FOR NUCLEAR POWER REACTORS hy K.T. Brown POSTAL ADDRESS: Atomic Energy Board Private Bag X256 PRETORIA 0001 PELINDABA Fi-ln liai v 1977 ISBN U 86Ü6U 654 9 Pago Page SAMEVATTING 2 ABSTRACT 2 3. REACTOR FUEL REQUIREMENTS 5 1. INTRODUCTION 3 3.1 Reactor Types 5 2. URANIUM ENRICHMENT 3 3.1.1 Pressurised-water roactor 5 2.1 Definitions 3 3.1.2 Boiling-water reactor 5 2.1.1 Natural uranium 3 3.1.3 CANDU-PHW 6 2.1.2 Fissile 3 3.1.4 High-temperature gas-cooled reactor 6 2.1.3 Fertile 3 2.1.5 Liquid-metal-cooled fast breeder reactor ... .6 2.1.4 Enrichment 3 3.2 Nuclear Fuel Cycles 6 2.1.5 Product 3 3.3 Typical Fuel Requirements 6 2.1.6 Feed 3 3.3.1 Pressurised-wator reactor 7 2.1.7 Tails, or waste 3 3.3.2 Boiling-water reactor 8 2.1.8 Cascade 3 3.3.3 CANDU-PHW 9 2.1.9 Separative work 4 3.3.4 High-temperature gas-cooled reactor 9 2.1.10 Separative-work unit 4 3.3.5 Liquid-metal-cooled fast breeder reactor ... 10 2.2 Enrichment Parameters 4 3.3.6 Comparative data 10 2.3 Optimum Tails Assay 5 4. -
1 Potential Influences on the Prospect of Renewable Energy Development in OPEC Members Hanan Alsadi1 1. Introduction the Global
1 Potential Influences on the Prospect of Renewable Energy Development in OPEC Members Hanan Alsadi1 1. Introduction The global energy transitioning trend escalates due to the continuous growth of energy consumption and advancing climate change. While the total fossil fuel consumption is increasing twice as fast as the average rate over the last decade, making 70% of the global energy demand, the reckless use of fossil fuel is causing substantial damage to the environment (International Energy Agency, 2018; Šolc, 2013). An effective fix to the problem while dubious is to replace the energy source by alternatives. The renewable energy (RE) offers the most definite prospect for producing clean, sustainable power in substantial quantities, which arouses interest around the world. According to Gielen and Colleagues (2019), the RE’s share of global consumption energy would rise from 15% in 2015 to 63% in 2050. However, if this increasing trend in renewable energies would also prevail among Organization of Petroleum Exporting Countries (OPEC), is subject to debate. They all have abundant potential to invest in renewable energy sources. Yet, some of the Middle Eastern and Arab Gulf OPEC members do not have or have a small amount of renewable energy sources. In contrast, other members have significant renewable energy sources. Researchers have studied some aspects of renewable energy and its relationship to the OPEC countries. For example, Wittmann (2013) looked at the potential for transitioning from petroleum exportation to renewable energy exportation among the OPEC countries. Still, Wittmann does not explain any specific transition strategies or plans for the Middle Eastern OPEC countries. -
2003/09/17-LES Hearing
-O - ENERGY "RAS 'V87 RESOURCES 3L INTERNATIONAL, INC. , : _ _ ERI-21 29-0301 Market for Uranium Enrichment Services 0 2003 Energy Resources International, Inc. All Rights Reserved. II II Prepared For: I Cz) C-oC Louisiana Energy Services, L.P. * - C- C-, Ir' Cf. -v" I. Ln U) September 17, 2003 5s 0CRIM by: Appflcantkonqit~- NRC SWaf Oler______ IDnesslnaae4!501 WA A~mbkat FECTED VW1D0M1111 (j 6o 1015 18t Street, NW, Suite 650 Washington, DC 20036 , , _ . USA Telephone: (202) 785-8833 FacsImile: (202) 785-8834 LES-04940 iemP/a7Le-- Sl cy- 16g2 Se Cvo,-e - NOTICE ERI believes the information in this report to be accurate. However, ERI does not make any w arranty, e xpress or i mplied, n or a ssume any l egal I iability o r r esponsibility for t he accuracy, completeness, or usefulness of any informay ntained herein, nor for any consequent loss or damage of jrWit clf this information. * , w * n - LES-04941 ERI-129030203 /Setemer ii nerg Reourcs IteratioalInc ERI-2129-0301/September 2003 .. Energy Resources Internatignal, Inc. TABLE OF CONTENTS 1. Introduction 1 2. Forecast of Installed Nuclear Power Generating Capacity 2 3. Uranium Enrichment Requirements Forecast 7 4. Current and Potential Future Sources of Uranium Enrichment Services 11 5. Market Analysis of Supply #nd Requirements 21 5.1. Scenario A - LES and USEC Centrifuge Plants Are Built in the U.S. 21 5.2. Scenario B - No LES; USEC Deploys Centrifuge Plant and Continues to Operate Paducah GDP 24 5.3. Scenario C - No LES; USEC Deploys Centrifuge Plant and Increases Centrifuge Plant Capability 25 5.4. -
Commercialization and Deployment at NREL: Advancing Renewable
Commercialization and Deployment at NREL Advancing Renewable Energy and Energy Efficiency at Speed and Scale Prepared for the State Energy Advisory Board NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Management Report NREL/MP-6A42-51947 May 2011 Contract No. DE-AC36-08GO28308 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Available electronically at http://www.osti.gov/bridge Available for a processing fee to U.S. Department of Energy and its contractors, in paper, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone: 865.576.8401 fax: 865.576.5728 email: mailto:[email protected] Available for sale to the public, in paper, from: U.S. -
Mining Company of Akouta (COMINAK), Akouta, Agadez II 111 I II III 111 Lllllll Mining Society of Air (SOMAIR), Arlit, Agadez XA0055932 Niger
IAEA-SM-362/37 WASTE MANAGEMENT IN URANIUM COMPANIES OF NIGER Mining Company of Akouta (COMINAK), Akouta, Agadez II 111 I II III 111 lllllll Mining Society of Air (SOMAIR), Arlit, Agadez XA0055932 Niger Two companies produce uranium (yellow cake) in Niger: the "Societe des Mines de l'Ai'r (SOMAIR)" and the "Compagnie Miniere d'Akouta (COMINAK)". SOMAIR exploits uranium an open pit mining whereas COMINAK exploits an underground mining. The uranium ores with a grade of 0.25%U to 0.5%U [1] are treated by SOMAIR and COMINAK mills since 1971 and 1978 respectively. During the uranium recovery processing the principal following inputs are used: uranium ores, sulphuric acid (75 kg/t to 80 kg/5), nitric acid (10 kg/t recycled), sodium oxidant (2.5 kg/t) and water (150 l/t) [2]. The main chain of mining and milling is the following: Mining • Crushing • Leaching —• Solid-Liquid separation —*• Solvent extraction —• Uranium recovery —• Tailings management. The wastes produced (from mining and milling) can be classified as liquid wastes and solid wastes. The first one (liquid wastes) is of two kinds: wastewater and other liquid effluents. The wastewater is decanted for reuse in mills (COMINAK uses 16 basins with 4m of depth on an area of 44 ha to treat 3.4 millions mVyear [3]). Other liquid effluents are stored in basins of evaporation (COMINAK which has produced a volume of 2.18 millions m3 used 11 basins with 4 m of depth on an area of 65 ha against 10 ha for SOMAIR [3])- The solid wastes are barren overburden, low grade uranium ore and tailings mill. -
Atlantic Offshore Wind Energy Development: Values and Implications for Recreation and Tourism
OCS Study BOEM 2018-013 Atlantic Offshore Wind Energy Development: Values and Implications for Recreation and Tourism US Department of the Interior Bu reau of Ocean Energy Management Office of Renewable Energy Programs OCS Study BOEM 2018-013 Atlantic Offshore Wind Energy Development: Values and Implications for Recreation and Tourism March 2018 Authors: George Parsons Jeremy Firestone Prepared under M12AC00017 By University of Delaware 210 Hullihen Hall, Newark, DE 19716-0099 US Department of the Interior Bu reau of Ocean Energy Management Office of Renewable Energy Programs DISCLAIMER Study collaboration and funding were provided by the US Department of the Interior, Bureau of Ocean Energy Management (BOEM), Environmental Studies Program, Washington, DC, under Agreement Number M12AC00017. This report has been technically reviewed by BOEM, and it has been approved for publication. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the US Government, nor does mention of trade names or commercial products constitute endorsement or recommendation for use. REPORT AVAILABILITY To download a PDF file of this report, go to the US Department of the Interior, Bureau of Ocean Energy Management Data and Information Systems webpage (http://www.boem.gov/Environmental-Studies- EnvData/), click on the link for the Environmental Studies Program Information System (ESPIS), and search on 2018-013. The report is also available at the National Technical Reports Library at https://ntrl.ntis.gov/NTRL/. CITATION Parsons, G. Firestone, J. 2018. Atlantic Offshore Wind Energy Development: Values and Implications for Recreation and Tourism. -
Re-Examining the Role of Nuclear Fusion in a Renewables-Based Energy Mix
Re-examining the Role of Nuclear Fusion in a Renewables-Based Energy Mix T. E. G. Nicholasa,∗, T. P. Davisb, F. Federicia, J. E. Lelandc, B. S. Patela, C. Vincentd, S. H. Warda a York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD, UK b Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH c Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, L69 3GJ, UK d Centre for Advanced Instrumentation, Department of Physics, Durham University, Durham DH1 3LS, UK Abstract Fusion energy is often regarded as a long-term solution to the world's energy needs. However, even after solving the critical research challenges, engineer- ing and materials science will still impose significant constraints on the char- acteristics of a fusion power plant. Meanwhile, the global energy grid must transition to low-carbon sources by 2050 to prevent the worst effects of climate change. We review three factors affecting fusion's future trajectory: (1) the sig- nificant drop in the price of renewable energy, (2) the intermittency of renewable sources and implications for future energy grids, and (3) the recent proposition of intermediate-level nuclear waste as a product of fusion. Within the scenario assumed by our premises, we find that while there remains a clear motivation to develop fusion power plants, this motivation is likely weakened by the time they become available. We also conclude that most current fusion reactor designs do not take these factors into account and, to increase market penetration, fu- sion research should consider relaxed nuclear waste design criteria, raw material availability constraints and load-following designs with pulsed operation. -
China's Energy Situation and Its Future and the New Energy Security Concept
ThirdThird OPECOPEC InternationalInternational SeminarSeminar ChinaChina’’ss EnergyEnergy SituationSituation andand itsits FutureFuture aandnd thethe NewNew EnergyEnergy SecuritySecurity ConceptConcept Ambassador TANG Guoqiang Permanent Mission of the People’s Republic of China to the United Nations and other International Organizations in Vienna Vienna September 12th, 2006 OutlinesOutlines I.I. TheThe CurrentCurrent EnergyEnergy SituationSituation inin ChinaChina II.II. ChinaChina’’ss FutureFuture EnergyEnergy PolicyPolicy III.III. ChinaChina’’ss NewNew EnergyEnergy SecuritySecurity ConceptConcept I.I. CurrentCurrent EnergyEnergy SituationSituation inin ChinaChina China has become one of the world largest energy producers and consumers and in 2005 Primary energy production: equivalent to 2.06 billion tons of standard coal, increased 9.5% over the previous year Coal production: 38 % of the world the 1st largest producer Crude oil production: 180 million tons ranking the 6th in the world Hydro-electricity: 401 billion kw hours ranking 1st in the world 93% Consumption: equivalent to 2.22 billion tons of standard coal Energy self-sufficiency rate: 93 % Energy self-sufficiency rate: 93 % Energy Self-sufficiency Rate HugeHuge exploitativeexploitative potentialpotential inin ChinaChina By the end of 2005 Total conventional energy recourses: 823 billion standard tons of coal Proven recoverable deposits : 139.2 billion standard tons of coal 10.1 % of the world Proven coal deposit: 12 % of the world No. 1 rank the 3rd of the world No. -
Uranium Fact Sheet
Fact Sheet Adopted: December 2018 Health Physics Society Specialists in Radiation Safety 1 Uranium What is uranium? Uranium is a naturally occurring metallic element that has been present in the Earth’s crust since formation of the planet. Like many other minerals, uranium was deposited on land by volcanic action, dissolved by rainfall, and in some places, carried into underground formations. In some cases, geochemical conditions resulted in its concentration into “ore bodies.” Uranium is a common element in Earth’s crust (soil, rock) and in seawater and groundwater. Uranium has 92 protons in its nucleus. The isotope2 238U has 146 neutrons, for a total atomic weight of approximately 238, making it the highest atomic weight of any naturally occurring element. It is not the most dense of elements, but its density is almost twice that of lead. Uranium is radioactive and in nature has three primary isotopes with different numbers of neutrons. Natural uranium, 238U, constitutes over 99% of the total mass or weight, with 0.72% 235U, and a very small amount of 234U. An unstable nucleus that emits some form of radiation is defined as radioactive. The emitted radiation is called radioactivity, which in this case is ionizing radiation—meaning it can interact with other atoms to create charged atoms known as ions. Uranium emits alpha particles, which are ejected from the nucleus of the unstable uranium atom. When an atom emits radiation such as alpha or beta particles or photons such as x rays or gamma rays, the material is said to be undergoing radioactive decay (also called radioactive transformation).