Glossary of Nuclear Terms
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Glossary Physics (I-Introduction)
1 Glossary Physics (I-introduction) - Efficiency: The percent of the work put into a machine that is converted into useful work output; = work done / energy used [-]. = eta In machines: The work output of any machine cannot exceed the work input (<=100%); in an ideal machine, where no energy is transformed into heat: work(input) = work(output), =100%. Energy: The property of a system that enables it to do work. Conservation o. E.: Energy cannot be created or destroyed; it may be transformed from one form into another, but the total amount of energy never changes. Equilibrium: The state of an object when not acted upon by a net force or net torque; an object in equilibrium may be at rest or moving at uniform velocity - not accelerating. Mechanical E.: The state of an object or system of objects for which any impressed forces cancels to zero and no acceleration occurs. Dynamic E.: Object is moving without experiencing acceleration. Static E.: Object is at rest.F Force: The influence that can cause an object to be accelerated or retarded; is always in the direction of the net force, hence a vector quantity; the four elementary forces are: Electromagnetic F.: Is an attraction or repulsion G, gravit. const.6.672E-11[Nm2/kg2] between electric charges: d, distance [m] 2 2 2 2 F = 1/(40) (q1q2/d ) [(CC/m )(Nm /C )] = [N] m,M, mass [kg] Gravitational F.: Is a mutual attraction between all masses: q, charge [As] [C] 2 2 2 2 F = GmM/d [Nm /kg kg 1/m ] = [N] 0, dielectric constant Strong F.: (nuclear force) Acts within the nuclei of atoms: 8.854E-12 [C2/Nm2] [F/m] 2 2 2 2 2 F = 1/(40) (e /d ) [(CC/m )(Nm /C )] = [N] , 3.14 [-] Weak F.: Manifests itself in special reactions among elementary e, 1.60210 E-19 [As] [C] particles, such as the reaction that occur in radioactive decay. -
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Cover image: Courtesey of EDF Energy — www.edfenergy.com/energy CONTENTS... 1 AT A GLANCE... 2 A BRIEF HISTORY OF NUCLEAR ENERGY... 4 BENEFITS OF NUCLEAR ENERGY... 5 WHAT THE PUBLIC THINK... 6 HOW NUCLEAR CREATES ENERGY... 7 HOW A REACTOR WORKS... 8 THE NUCLEAR FUEL CYCLE... 9 MANAGING WASTE... 10 RADIATION EXPLAINED... 12 NUCLEAR AROUND THE WORLD... 14 UK NUCLEAR SITES... 16 NUCLEAR NEW BUILD... 17 NEW BUILD IN NUMBERS... 18 LOOKING TO THE FUTURE... 19 DECOMMISSIONING... 20 CAREERS IN NUCLEAR... 21 FUTHER INFORMATION... AT A GLANCE... Nuclear is a major part of our energy mix. Today it accounts for 21% of electricity generated in the UK and has been providing secure low carbon electricity for over 60 years. Low carbon energy, including There are 15 nuclear power and renewables, nuclear power account for almost 51% of the reactors operating UK’s generation electricity mix across eight sites in the UK In 2016 nuclear energy avoided 22.7 million metric tonnes of CO2 emissions in the UK BEIS,Digest of UK Energy Statistics 2018 That’s equivalent to taking around a third of all cars in the UK off the road Civil nuclear contributes over £6 billion to the jobs in the UK civil nuclear sector UK economy as much as aerospace manufacturing 12,159 Women in civil nuclear 1,981 People on apprenticeships Three quarters of the public 914 believe nuclear should be part People on graduate schemes of the clean energy mix Jobs Map figures generated from participating NIA members 1 This simple timeline charts some of the key people, events and legislation A BRIEF HISTORY OF NUCLEAR ENERGY.. -
Neutron Stars
Chandra X-Ray Observatory X-Ray Astronomy Field Guide Neutron Stars Ordinary matter, or the stuff we and everything around us is made of, consists largely of empty space. Even a rock is mostly empty space. This is because matter is made of atoms. An atom is a cloud of electrons orbiting around a nucleus composed of protons and neutrons. The nucleus contains more than 99.9 percent of the mass of an atom, yet it has a diameter of only 1/100,000 that of the electron cloud. The electrons themselves take up little space, but the pattern of their orbit defines the size of the atom, which is therefore 99.9999999999999% Chandra Image of Vela Pulsar open space! (NASA/PSU/G.Pavlov et al. What we perceive as painfully solid when we bump against a rock is really a hurly-burly of electrons moving through empty space so fast that we can't see—or feel—the emptiness. What would matter look like if it weren't empty, if we could crush the electron cloud down to the size of the nucleus? Suppose we could generate a force strong enough to crush all the emptiness out of a rock roughly the size of a football stadium. The rock would be squeezed down to the size of a grain of sand and would still weigh 4 million tons! Such extreme forces occur in nature when the central part of a massive star collapses to form a neutron star. The atoms are crushed completely, and the electrons are jammed inside the protons to form a star composed almost entirely of neutrons. -
Nuclear Industry Council Proposals to Government for a Sector Deal
The Nuclear Sector Deal Nuclear Industry Council Proposals to Government for a Sector Deal l Foreword The UK’s civil nuclear sector is amongst the most advanced in the world. Our global leadership status has been earnt through a record across the entire nuclear lifecycle – from enrichment, through fuel production, generation, operation, new build, research and decommissioning – and increasingly enhanced by our world class regulatory system as the country’s new build programme takes shape. Our sector is an economic powerhouse – currently equivalent in scale to aerospace manufacturing – providing tens of thousands of highly skilled jobs, driving growth in diverse regions across the UK. Our world leading research and development puts us at the forefront of waste and decommissioning, with UK companies well placed to benefit from opportunities in a global market worth £100bn. The existing fleet of nuclear power stations provides more than 20% of the UK’s electricity supply, and its low carbon, reliable baseload characteristics complement a changing energy system with a greater penetration of intermittent and variable renewable sources of generation. The combination of low carbon power sources has helped the UK reduce its carbon emissions, and will be vitally important to maintain that progress as both transport and heat become less carbon intensive, and more reliant on clean electricity in the future. The potential to build on that record is real, and the Nuclear Industry Council has worked under my leadership to present the opportunities for where greater collaboration by industry, with the right levels of facilitation from the government, can maximise that potential, and make a significant contribution to meeting the objectives set by the government in its Industrial Strategy white paper. -
Free Radical Reactions (Read Chapter 4) A
Chemistry 5.12 Spri ng 2003, Week 3 / Day 2 Handout #7: Lecture 11 Outline IX. Free Radical Reactions (Read Chapter 4) A. Chlorination of Methane (4-2) 1. Mechanism (4-3) B. Review of Thermodynamics (4-4,5) C. Review of Kinetics (4-8,9) D. Reaction-Energy Diagrams (4-10) 1. Thermodynamic Control 2. Kinetic Control 3. Hammond Postulate (4-14) 4. Multi-Step Reactions (4-11) 5. Chlorination of Methane (4-7) Suggested Problems: 4-35–37,40,43 IX. A. Radical Chlorination of Methane H heat (D) or H H C H Cl Cl H C Cl H Cl H light (hv) H H Cl Cl D or hv D or hv etc. H C Cl H C Cl H Cl Cl C Cl H Cl Cl Cl Cl Cl H H H • Why is light or heat necessary? • How fast does it go? • Does it give off or consume heat? • How fast are each of the successive reactions? • Can you control the product ratio? To answer these questions, we need to: 1. Understand the mechanism of the reaction (arrow-pushing!). 2. Use thermodynamics and kinetics to analyze the reaction. 1 1. Mechanism of Radical Chlorination of Methane (Free-Radical Chain Reaction) Free-radical chain reactions have three distinct mechanistic steps: • initiation step: generates reactive intermediate • propagation steps: reactive intermediates react with stable molecules to generate other reactive intermediates (allows chain to continue) • termination step: side-reactions that slow the reaction; usually combination of two reactive intermediates into one stable molecule Initiation Step: Cl2 absorbs energy and the bond is homolytically cleaved. -
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. -
NEWSLETTER Issue No. 7 September 2017
NEWSLETTER September 2017 Issue no. 7 Nuclear Industry Group Newsletter September 2017 Contents Notes from the Chair ................................................................................... 3 IOP Group Officers Forum .......................................................................... 4 NIG Committee Elections ............................................................................ 6 Nuclear Industry Group Career Contribution Prize 2017 .......................... 7 Event – Gen IV Reactors by Richard Stainsby (NNL) ................................ 8 Event – Nuclear Security by Robert Rodger (NNL) and Graham Urwin (RWM) ......................................................................................................... 12 Event – The UK’s Nuclear Future by Dame Sue Ion ................................ 13 Event – Regulatory Challenges for Nuclear New Build by Mike Finnerty. .................................................................................................................... 15 Event – European Nuclear Young Generation Forum ............................. 18 Event – Nuclear Fusion, 60 Years on from ZETA by Chris Warrick (UKAEA), Kate Lancaster (York Plasma Institute), David Kingham (Tokamak Energy) and Ian Chapman (UKAEA) ....................................... 19 IOP Materials and Characterisation Group Meetings .............................. 25 “Brexatom” – the implications of the withdrawal for the UK from the Euratom Treaty. ........................................................................................ -
TEK 8.5C: Periodic Table
Name: Teacher: Pd. Date: TEK 8.5C: Periodic Table TEK 8.5C: Interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements. Elements and the Periodic Table An element is a substance that cannot be separated into simpler substances by physical or chemical means. An element is already in its simplest form. The smallest piece of an element that still has the properties of that element is called an atom. An element is a pure substance, containing only one kind of atom. The Periodic Table of Elements is a list of all the elements that have been discovered and named, with each element listed in its own element square. Elements are represented on the Periodic Table by a one or two letter symbol, and its name, atomic number and atomic mass. The Periodic Table & Atomic Structure The elements are listed on the Periodic Table in atomic number order, starting at the upper left corner and then moving from the left to right and top to bottom, just as the words of a paragraph are read. The element’s atomic number is based on the number of protons in each atom of that element. In electrically neutral atoms, the atomic number also represents the number of electrons in each atom of that element. For example, the atomic number for neon (Ne) is 10, which means that each atom of neon has 10 protons and 10 electrons. Magnesium (Mg) has an atomic number of 12, which means it has 12 protons and 12 electrons. -
Supplier Performance and the Smicop Domestic Monitoring and Compliance Survey Report: Results for Smart Meter Installations Occu
Supplier Performance and the SMICoP Domestic Monitoring and Compliance Survey Report: Results for Smart Meter Installations occurring from October to December 2019 Published 30 June 2020 Page 1 of 26 30 Jun 2020 Summary The Smart Meter Installation Code of Practice (SMICoP) is a set of rules that energy suppliers must follow when installing smart meters in homes and smaller businesses. To make sure these standards have been met by the energy suppliers, a sample of customers are asked about their experiences when their smart meter was installed. These surveys are carried out by independent survey organisations on behalf of energy suppliers. More information regarding the methodology can be found within the Annex A of this report. The Monitoring and Compliance Customer Survey (MCCS) report was established to show if energy suppliers have met their obligations and responsibilities set out in the SMICoP rules. This report provides a summary of the answer’s customers gave about what happened when a smart meter was installed in their home. Some of the questions within the report show how your energy supplier is performing when installing smart meters in homes compared to other suppliers. Some of the questions within the report do not demonstrate the performance of an energy supplier if looked at on their own. For the questions that don’t indicate a better or worse performance, that are intended to help qualify1 a subsequent question, the information is presented listed by supplier in alphabetical order in black shaded tables and figures. Where suppliers’ performance is ranked highest to lowest, these are shown in blue shaded tables and figures. -
Neural Network Based Microgrid Voltage Control Chun-Ju Huang University of Wisconsin-Milwaukee
University of Wisconsin Milwaukee UWM Digital Commons Theses and Dissertations May 2013 Neural Network Based Microgrid Voltage Control Chun-Ju Huang University of Wisconsin-Milwaukee Follow this and additional works at: https://dc.uwm.edu/etd Part of the Electrical and Electronics Commons Recommended Citation Huang, Chun-Ju, "Neural Network Based Microgrid Voltage Control" (2013). Theses and Dissertations. 118. https://dc.uwm.edu/etd/118 This Thesis is brought to you for free and open access by UWM Digital Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UWM Digital Commons. For more information, please contact [email protected]. NEURAL NETWORK BASED MICROGRID VOLTAGE CONTROL by Chun-Ju Huang A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Engineering at The University of Wisconsin-Milwaukee May 2013 ABSTRACT NEURAL NETWORK BASED MICROGRID VOLTAGE CONTROL by Chun-Ju Huang The University of Wisconsin-Milwaukee, 2013 Under the Supervision of Professor David Yu The primary purpose of this study is to improve the voltage profile of Microgrid using the neural network algorithm. Neural networks have been successfully used for character recognition, image compression, and stock market prediction, but there is no directly application related to controlling distributed generations of Microgrid. For this reason the author decided to investigate further applications, with the aim of controlling diesel generator outputs. Firstly, this thesis examines the neural network algorithm that can be utilized for alleviating voltage issues of Microgrid and presents the results. MATLAT and PSCAD are used for training neural network and simulating the Microgrid model respectively. -
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). -
NNB Genco Organisational Capability Arrangements – Workstreams 12 to 15
NOT PROTECTIVELY MARKED Office for Nuclear Regulation An agency of HSE Civil Nuclear Reactor Programme NNB GenCo Organisational Capability Arrangements – Workstreams 12 to 15 Assessment Report: ONR-CNRP-AR-12-100 Revision 0 20 November 2012 NOT PROTECTIVELY MARKED NOT PROTECTIVELY MARKED Office for Nuclear Regulation An agency of HSE ASSESSMENT REPORT Site: Hinkley Point C Granting of a Nuclear Site Licence to NNB Generation Company Ltd to install Project: and operate two EPR units at Hinkley Point C Title: NNB GenCo Organisational Capability Arrangements – Workstreams 12 to 15 Licence Number: 97 Licence Condition(s): N/A IIS Rating: 3 COIN Service Order: N/A Document Identifier Identifier Revision TRIM Reference(s) ONR-CNRP-AR-12-100 0 2012/389494 Step-based Document Review Step Description Role Name Date TRIM Revision* 1 Initial draft, including identification and Author 26/09/12 mark-up of SNI/CCI 2 Main editorial review Author 28/09/12 3 Peer Review in accordance with AST/005 Peer Reviewer 14/11/12 Issue 1 4 Assessor update / sentencing of comments Author 19/11/12 and return to Peer Reviewer 5 Final editorial / clean draft review Author 19/11/12 6 Acceptance review in accordance with AUH 20/11/12 AST/003 Issue 4 7 Report Sign-off Author / Peer 26/11/12 Reviewer / AUH Document Acceptance Role Name Position Signature Date Author HM Inspector 28/09/12 † Peer Review HM Principal Inspector 19/11/12 * TRIM revision to be identified upon completion of activity and incorporation of any changes to document. NOT PROTECTIVELY MARKED NOT PROTECTIVELY MARKED Office for Nuclear Regulation An agency of HSE ASSESSMENT REPORT Document Acceptance Role Name Position Signature Date ‡ Acceptance HM Superintending Inspector 26/11/12 Revision History Revision Date Author(s) Reviewed By Accepted By Description Of Change 0 First formal issue.