R&D and Innovation Needs for Decommissioning of Nuclear
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Breeder Reactors: a Renewable Energy Source Bernard L
Am. J. Phys. 51(1), Jan. 1983 Breeder reactors: A renewable energy source Bernard L. Cohen Department of Physics. University of Pittsburgh, Pittsburgh, Pennsylvania 15260 Since energy sources derived from the sun are called “renew- giving an equilibrium Q = S/8. Assuming that equilibrium has been able,” that adjective apparently means that they will be available in reached, 8–1 = Q/S = (4.6×109 tonne)/ (3.2×104 tonne/yr) = 140 000 undiminished quantity at present costs for as long as the current yr. Since this is such a short time geologically, it is reasonable to relationship between the sun and Earth persists, about 5 billion assume that equilibrium has been reached, and that the value of Q years. It is the purpose of this note to show that breeder reactors at t = 0 is immaterial to the discussion. Moreover, the fact that 8–1 using nuclear fission fulfill this definition of a renewable energy is so much longer than the time for dilution of material through the source, and in fact can supply all the world’s energy needs at world’s oceans, less than 1000 yr,5 means that nonuniformity of present costs for that time period. uranium concentration is not a long-term problem. The world’s uranium resources are sufficient to fuel light-water If we were to withdraw uranium at a rate R, the differential reactors for only a few tens of years, and since uranium is used equation for Q would become about 100 times more efficiently as an energy source in breeder dQ/dt = S – R – 8Q, 8 reactors than in light-water reactors, it is frequently said that the leading to an equilibrium Q = (S – R)/ = Q00(1 – R/S), where Q is amount of uranium available can support the world’s energy needs the present value of Q. -
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. -
Institute for Clinical and Economic Review
INSTITUTE FOR CLINICAL AND ECONOMIC REVIEW FINAL APPRAISAL DOCUMENT BRACHYTHERAPY & PROTON BEAM THERAPY FOR TREATMENT OF CLINICALLY-LOCALIZED, LOW-RISK PROSTATE CANCER December 22, 2008 Senior Staff Daniel A. Ollendorf, MPH, ARM Chief Review Officer Julia Hayes, MD Lead Decision Scientist Pamela McMahon, PhD Sr. Decision Scientist Steven D. Pearson, MD, MSc President, ICER Associate Staff Michelle Kuba, MPH Sr. Technology Analyst Angela Tramontano, MPH Research Assistant © ICER, 2008 1 CONTENTS About ICER .................................................................................................................................. 3 Acknowledgments ...................................................................................................................... 4 Executive Summary .................................................................................................................... 5 Evidence Review Group Deliberation.................................................................................. 15 ICER Integrated Evidence Rating.......................................................................................... 21 Evidence Review Group Members........................................................................................ 24 Appraisal Overview.................................................................................................................. 28 Background ............................................................................................................................... -
FT/P3-20 Physics and Engineering Basis of Multi-Functional Compact Tokamak Reactor Concept R.M.O
FT/P3-20 Physics and Engineering Basis of Multi-functional Compact Tokamak Reactor Concept R.M.O. Galvão1, G.O. Ludwig2, E. Del Bosco2, M.C.R. Andrade2, Jiangang Li3, Yuanxi Wan3 Yican Wu3, B. McNamara4, P. Edmonds, M. Gryaznevich5, R. Khairutdinov6, V. Lukash6, A. Danilov7, A. Dnestrovskij7 1CBPF/IFUSP, Rio de Janeiro, Brazil, 2Associated Plasma Laboratory, National Space Research Institute, São José dos Campos, SP, Brazil, 3Institute of Plasma Physics, CAS, Hefei, 230031, P.R. China, 4Leabrook Computing, Bournemouth, UK, 5EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon, UK, 6TRINITI, Troitsk, RF, 7RRC “Kurchatov Institute”, Moscow, RF [email protected] Abstract An important milestone on the Fast Track path to Fusion Power is to demonstrate reliable commercial application of Fusion as soon as possible. Many applications of fusion, other than electricity production, have already been studied in some depth for ITER class facilities. We show that these applications might be usefully realized on a small scale, in a Multi-Functional Compact Tokamak Reactor based on a Spherical Tokamak with similar size, but higher fields and currents than the present experiments NSTX and MAST, where performance has already exceeded expectations. The small power outputs, 20-40MW, permit existing materials and technologies to be used. The analysis of the performance of the compact reactor is based on the solution of the global power balance using empirical scaling laws considering requirements for the minimum necessary fusion power (which is determined by the optimized efficiency of the blanket design), positive power gain and constraints on the wall load. In addition, ASTRA and DINA simulations have been performed for the range of the design parameters. -
CHAPTER 13 Reactor Safety Design and Safety Analysis Prepared by Dr
1 CHAPTER 13 Reactor Safety Design and Safety Analysis prepared by Dr. Victor G. Snell Summary: The chapter covers safety design and safety analysis of nuclear reactors. Topics include concepts of risk, probability tools and techniques, safety criteria, design basis accidents, risk assessment, safety analysis, safety-system design, general safety policy and principles, and future trends. It makes heavy use of case studies of actual accidents both in the text and in the exercises. Table of Contents 1 Introduction ............................................................................................................................ 6 1.1 Overview ............................................................................................................................. 6 1.2 Learning Outcomes............................................................................................................. 8 1.3 Risk ...................................................................................................................................... 8 1.4 Hazards from a Nuclear Power Plant ................................................................................ 10 1.5 Types of Radiation in a Nuclear Power Plant.................................................................... 12 1.6 Effects of Radiation ........................................................................................................... 12 1.7 Sources of Radiation ........................................................................................................ -
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. -
Security of Supply of Medical Radioisotopes - a Clinical View Dr Beverley Ellis Consultant Radiopharmacist
Security of Supply of Medical Radioisotopes - a clinical view Dr Beverley Ellis Consultant Radiopharmacist Nuclear Medicine Centre Manchester University NHS Foundation Trust Nuclear Medicine § Approx 35 million clinical radionuclide imaging procedures worldwide § Globally 2nd most common imaging technique after CT (higher than MR) 20 million in USA 9 million in Europe 3 million in Japan 3 million in rest of the world Approx 700, 000 nuclear medicine procedures per year in UK Myocardial Perfusion - Ischaemia Stress Stress SA Rest Stress VLA Rest Stress HLA Rest Rest Tc-99m Bone Scans Normal Metastases Mo-99/Tc-99m Generator Supply Tc-99m Radiopharmaceutical Production Mo-99 Shortages Design of Clinical Services to Reduce Tc-99m Use § Optimisation of generator management – Efficiency savings – Delivery and extraction schedules – Patient scheduling § Improved communication – Customers – Suppliers § Improved software – gamma cameras – Produce comparable quality images using less radioactivity Global Situation § OECD/Nuclear Energy Agency (NEA) – Set up High Level Group (HLG-MR) in 2009 – Security of supply of Mo-99 and Tc-99m – Established 6 principles e.g. full cost recovery and outage reserve capacity – Issued a series of publications Global Situation § AIPES (Association of Imaging Producers & Equipment supplies) (Now called Nuclear Medicine Europe) – Support coordination of research reactor schedules Global Situation § Increased Mo-99 Production Capacity – Mo-99 suppliers – acquire additional capacity to cover shortfalls (Outage -
Basics of Radiation Radiation Safety Orientation Open Source Booklet 1 (June 1, 2018)
Basics of Radiation Radiation Safety Orientation Open Source Booklet 1 (June 1, 2018) Before working with radioactive material, it is helpful to recall… Radiation is energy released from a source. • Light is a familiar example of energy traveling some distance from its source. We understand that a light bulb can remain in one place and the light can move toward us to be detected by our eyes. • The Electromagnetic Spectrum is the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and includes visible light. Radioactive materials release energy with enough power to cause ionizations and are on the high end of the electromagnetic spectrum. • Although our bodies cannot sense ionizing radiation, it is helpful to think ionizing radiation behaves similarly to light. o Travels in straight lines with decreasing intensity farther away from the source o May be reflected off certain surfaces (but not all) o Absorbed when interacting with materials You will be using radioactive material that releases energy in the form of ionizing radiation. Knowing about the basics of radiation will help you understand how to work safely with radioactive material. What is “ionizing radiation”? • Ionizing radiation is energy with enough power to remove tightly bound electrons from the orbit of an atom, causing the atom to become charged or ionized. • The charged atoms can damage the internal structures of living cells. The material near the charged atom absorbs the energy causing chemical bonds to break. Are all radioactive materials the same? No, not all radioactive materials are the same. -
Autonomous Intelligent Robotic Manipulator for On-Orbit Servicing
AUTONOMOUS INTELLIGENT ROBOTIC MANIPULATOR FOR ON-ORBIT SERVICING BENOIT P. LAROUCHE A DISSERTATION SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTORATE OF PHILOSOPHY GRADUATE PROGRAM IN EARTH AND SPACE SCIENCE YORK UNIVERSITY TORONTO, ONTARIO AUGUST 2012 Library and Archives Bibliotheque et Canada Archives Canada Published Heritage Direction du 1+1 Branch Patrimoine de I'edition 395 Wellington Street 395, rue Wellington Ottawa ON K1A0N4 Ottawa ON K1A 0N4 Canada Canada Your file Votre reference ISBN: 978-0-494-92801-1 Our file Notre reference ISBN: 978-0-494-92801-1 NOTICE: AVIS: The author has granted a non L'auteur a accorde une licence non exclusive exclusive license allowing Library and permettant a la Bibliotheque et Archives Archives Canada to reproduce, Canada de reproduire, publier, archiver, publish, archive, preserve, conserve, sauvegarder, conserver, transmettre au public communicate to the public by par telecommunication ou par I'lnternet, preter, telecommunication or on the Internet, distribuer et vendre des theses partout dans le loan, distrbute and sell theses monde, a des fins commerciales ou autres, sur worldwide, for commercial or non support microforme, papier, electronique et/ou commercial purposes, in microform, autres formats. paper, electronic and/or any other formats. The author retains copyright L'auteur conserve la propriete du droit d'auteur ownership and moral rights in this et des droits moraux qui protege cette these. Ni thesis. Neither the thesis nor la these ni des extraits substantiels de celle-ci substantial extracts from it may be ne doivent etre imprimes ou autrement printed or otherwise reproduced reproduits sans son autorisation. -
NATO and NATO-Russia Nuclear Terms and Definitions
NATO/RUSSIA UNCLASSIFIED PART 1 PART 1 Nuclear Terms and Definitions in English APPENDIX 1 NATO and NATO-Russia Nuclear Terms and Definitions APPENDIX 2 Non-NATO Nuclear Terms and Definitions APPENDIX 3 Definitions of Nuclear Forces NATO/RUSSIA UNCLASSIFIED 1-1 2007 NATO/RUSSIA UNCLASSIFIED PART 1 NATO and NATO-Russia Nuclear Terms and Definitions APPENDIX 1 Source References: AAP-6 : NATO Glossary of Terms and Definitions AAP-21 : NATO Glossary of NBC Terms and Definitions CP&MT : NATO-Russia Glossary of Contemporary Political and Military Terms A active decontamination alpha particle A nuclear particle emitted by heavy radionuclides in the process of The employment of chemical, biological or mechanical processes decay. Alpha particles have a range of a few centimetres in air and to remove or neutralise chemical, biological or radioactive will not penetrate clothing or the unbroken skin but inhalation or materials. (AAP-21). ingestion will result in an enduring hazard to health (AAP-21). décontamination active активное обеззараживание particule alpha альфа-частицы active material antimissile system Material, such as plutonium and certain isotopes of uranium, The basic armament of missile defence systems, designed to which is capable of supporting a fission chain reaction (AAP-6). destroy ballistic and cruise missiles and their warheads. It includes See also fissile material. antimissile missiles, launchers, automated detection and matière fissile радиоактивное вещество identification, antimissile missile tracking and guidance, and main command posts with a range of computer and communications acute radiation dose equipment. They can be subdivided into short, medium and long- The total ionising radiation dose received at one time and over a range missile defence systems (CP&MT). -
G20070354/G20070331 Fact Sheet, Biological Effects of Radiation
Fact Sheet 11 Ofice of Public Affairs Telephone: 301/415-8200 E-mail : opa @nrc.g ov I Biological Effects of Radiation Background Radiation is all around us. It is naturally present in our environment and has been since the birth of this planet. Consequently, life has evolved in an environment which has significant levels of ionizing radiation. It comes from outer space (cosmic), the ground (terrestrial), and even from within our own bodies. It is present in the air we breathe, the food we eat, the water we drink, and in the construction materials used to build our homes. Certain foods such as bananas and brazil nuts naturally contain higher levels of radiation than other foods. Brick and stone homes have higher natural radiation levels than homes made of other building materials such as wood. Our nation's Capitol, which is largely constructed of granite, contains higher levels of natural radiation than most homes. Levels of natural or background radiation can vary greatly from one location to the next. For example, people residing in Colorado are exposed to more natural radiation than residents of the east or west coast because Colorado has more cosmic radiation at a higher altitude and more terrestrial radiation from soils enriched in naturally occurring uranium. Furthermore, a lot of our natural exposure is due to radon, a gas from the earth's crust that is present in the air we breathe. The average annual radiation exposure from natural sources to an individual in the United States is about 300 millirem (3 millisieverts)*. Radon gas accounts for two-thirds of this exposure, while cosmic, terrestrial, and internal radiation account for the remainder. -
Hot Particles at Dounreay
SEPTEMBER 20, 2007 | No. 660 HOT PARTICLES AT DOUNREAY The Dounreay nuclear complex, situated on a remote part of the north coast of Scotland, was once home to a variety of experimental nuclear facilities including two prototype fast breeder reactors, a reprocessing plant and a materials test reactor. Nearly all of these are now closed, but the legacy of their waste, pollution and accidents HOT PARTICLES AT DOUNREAY 1 lives on. One of the main areas of concern is the radioactive particles ILLEGAL TRAFFICKING: INCREASE found near the complex. The latest radioactive fragment found on INCIDENTS INVOLVING THEFT OR LOSS 2 Sandside beach is one of the hottest yet detected. SLEBOS CASE REVEALS FAILURE OF DUTCH AND EU NUCLEAR NON- (660.5826) WISE Amsterdam - The They entered the drains, which should PROLIFERATION POLICIES 4 particle of cesium-137 picked up during have carried only low-active waste a sweep of the beach on September 7 waster, either from the reprocessing RECORD URANIUM PRICE - WHAT was the third recovered since monitoring plant or from a controversial waste shaft. IS BEHIND AND WHAT ARE THE resumed on August 5 after a lengthy The highly radioactive particles were CONSEQUENCES 5 gap. This brings the legacy of pollution known as 'swarf' -the outside cladding from the nearby Dounreay plant to 97 from spent fuel assemblies which are cut HEAVY SUBSIDIES IN HEAVY used reactor fuel particles and an off at the very start of the reprocessing WATER: ECONOMICS OF NUCLEAR unidentified radioactive object. procedure to expose the fuel rods. These POWER IN INDIA 6 are some of the most highly radioactive After being taken back to a lab at the wastes from spent fuel reprocessing.