Sustainable Nuclear Energy What are the scientific and technological challenges of safe, clean and abundant nuclear energy?
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1 Sustainable Nuclear Energy What are the scientific and technological challenges of safe, clean and abundant nuclear energy? Tim van der Hagen vision from 1939 NNV Section Subatomic Physics; November 5, 2010; Lunteren 1
2 # NPPs within 500 km NNV Section Subatomic Physics; November 5, 2010; Lunteren 2
3 IEA Energy Perspectives 2008 June 6, 2008 NNV Section Subatomic Physics; November 5, 2010; Lunteren 3
4 IEA Energy Perspectives 2008 June 6, 2008 NNV Section Subatomic Physics; November 5, 2010; Lunteren 4
5 History 1932: Discovery of the neutron (Chadwick) 1939: Demonstration of nuclear fission (Meitner, Hahn, Strassman) 1942 (Dec. 2): First controlled chain reaction in CP1 (Enrico Fermi) 1951 (Dec. 20): First nuclear electricity, EBR-1, Idaho 1955 (Jan. 17): First nuclear submarine at sea, Nautilus 1954 (June 26): First NPP, Obninsk, USSR (5 MWe) 1956: (Aug. 27): First NPP, Calder Hall, UK (50 MWe) 1957 (Dec. 2): First PWR, Shipping Port, USA (60 MWe) NNV Section Subatomic Physics; November 5, 2010; Lunteren 5
6 1954: Launching of Nautilus NNV Section Subatomic Physics; November 5, 2010; Lunteren 6
7 Nautilus passes the pole NNV Section Subatomic Physics; November 5, 2010; Lunteren 7
8 Nuclear fission no CO 2 radioactive Fissioning of 1 gram uranium yields as much energy as burning 2500 liters petrol or 3000 kilograms coal NNV Section Subatomic Physics; November 5, 2010; Lunteren 8
9 Small volumes of material needed strategic stock possible low amounts of waste all electricity in the Netherlands nuclear: 0.4 gram uranium fissioned (=waste) per family per year in a human life: a volume of 1 billiard ball Borssele produces 1.3 m 3 highly radioactive waste per year, but prevents the emission of 2 billion kilograms CO 2 per year a radioactive material emits radiation it clears itself (the more radioactive, the quicker) NNV Section Subatomic Physics; November 5, 2010; Lunteren 9
10 # neutrons released per absorption of 1 neutron Neutrons available for scientific research () production of medical isotopes (Petten) breeding of fuel # neutrons 239 Pu 1 neutron extra! chain reaction possible neutron energy / ev NNV Section Subatomic Physics; November 5, 2010; Lunteren 10
11 Cross sections (interaction probability) 235 U 238 U total total capture fission capture fission Neutron energy / ev Neutron energy / ev Neutrons have to be slowed down (moderated) to keep the chain reaction going (moderator: water, graphite) NNV Section Subatomic Physics; November 5, 2010; Lunteren 11
12 fissile fissionable fertile Fissile isotopes (can be fissioned by neutron absorption): 233 U, 235 U, 239 Pu, 241 Pu (rare) Fissionable isotopes (threshold in neutron energy): 232 Th, 233 Th, 234 U, 236 U, 238 U, 239 U, 240 Pu, 242 Pu Fertile isotopes (can be turned into a fissile isotope): 232 Th, 238 U NNV Section Subatomic Physics; November 5, 2010; Lunteren 12
13 Production of fissile isotopes (conversion) + n β 239 β min 23. d 94 U U Np Pu extra neutron needed + n β 233 β min 27 d 92 Th Th Pa U NNV Section Subatomic Physics; November 5, 2010; Lunteren 13
14 If more fissile isotopes are produced from fertile isotopes than were destroyed in the chain reaction: breeding NNV Section Subatomic Physics; November 5, 2010; Lunteren 14
15 neutron U-235 Moderator U-238 U-235 U-239 Moderator Np-239 U-238 Pu-239 Pu-239 NNV Section Subatomic Physics; November 5, 2010; Lunteren 15
16 Fuel tablets Composition of: 5% 235 U 95% 238 U (0.7% 235 U in natural ore) NNV Section Subatomic Physics; November 5, 2010; Lunteren 16
17 Fuel assembly of a PWR NNV Section Subatomic Physics; November 5, 2010; Lunteren 17
18 NNV Section Subatomic Physics; November 5, 2010; Lunteren 18
19 Energy balance ( (Life Cycle Analysis) (1000 MWe PWR, 80% availability, 40 years of operation) waste storage & transport 6 7 decommis -sioning energy input (centrifuge) mining & input / output = 1,7 % milling 1 conversion 2 enrichment with centrifuges: input / output = 1.7 % 5 construction & operation enrichment fuel fabrication 4 3 NNV Section Subatomic Physics; November 5, 2010; Lunteren 19
20 Element abundance in earth's crust C Si O Fe Co Ni Cu Ag PtAu Sn Pb Th U NNV Section Subatomic Physics; November 5, 2010; Lunteren 20
21 Uranium resources: The earth s crust contains 40 x as much uranium as silver; as much uranium as tin Cheap uranium (up to 130$ per kg): 5.5 million tons; enough for 80 years (0.1 ct/kwh) For the double price: 10 times as much; enough for 800 years using fast reactors: 80,000 years Uranium as byproduct from phosphate deposits (22 Mt recoverable) Uranium from seawater (450$ per kg): 4 billion tons; enough for 6,000,000 years Source: OECD NEA & IAEA, Uranium 2007: Resources, Production and Demand ("Red Book"). NNV Section Subatomic Physics; November 5, 2010; Lunteren 21
22 CO 2 production CO 2 (g/kwh e ) kolen olie gas zon PV water bio wind nucleair fusie coal oil gas solar PV hydro bio wind nuclear fusion Source: IAEA (2000) NNV Section Subatomic Physics; November 5, 2010; Lunteren 22
23 Costs of electricity production assumptions: 5% discount rate CO 2 price: 30 USD/tonne (plant level, without transport and storage) Source: OECD, Projected Costs of Generating Electricity, 2010 NNV Section Subatomic Physics; November 5, 2010; Lunteren 23
24 Breakdown of costs of nuclear electricity production 0,1 ct/kwh e 0,1 ct/kwh e NNV Section Subatomic Physics; November 5, 2010; Lunteren 24
25 Nuclear Power Plants in operation in total 441 NPPs 375 GWe Netherlands NNV Section Subatomic Physics; November 5, 2010; Lunteren 25
26 Nuclear Power Plants NNV Section Subatomic Physics; November 5, 2010; Lunteren 26
27 Status nuclear power plans January planned (316) construction (34) now 61 (60 GWe) in operation (439) gepland (316) in aanbouw (34) in bedrijf (439) Asia Western Eastern N.- and S.- Europe Europe America Africa NNV Section Subatomic Physics; November 5, 2010; Lunteren 27
28 Safety issue: decay heat per MW nominal power Decay power / MW Decay energy / MWd Time / day Core cooling is always needed, also after shutdown! NNV Section Subatomic Physics; November 5, 2010; Lunteren 28
29 Safety of nuclear power plants multiple barriers to keep radioactive nuclides inside Fuel (pellet and cladding) Primary system (steel) Containments (2x concrete + steel) NNV Section Subatomic Physics; November 5, 2010; Lunteren 29
30 Spent fuel: only 4% is waste spent fuel 1% plutonium 95% uranium 4% fission products NNV Section Subatomic Physics; November 5, 2010; Lunteren 30
31 Two sorts of radioactive products actinides (Pu, Am) (140 kg) Actinides Fiss Prods Ore Radiotoxicity (Sv) / Sv erts ore 250 years fission products (450 kg) 220,000 years Time Storage / time years (a) numbers: yearly production Borssele NNV Section Subatomic Physics; November 5, 2010; Lunteren 31
32 fission probability α (σ fis /σ cap ) Fast reactors can fission actinides, like plutonium Pu-239 Pu-240 Pu-241 Pu Energy (ev) neutron energy /ev NNV Section Subatomic Physics; November 5, 2010; Lunteren 32
33 Radioactive waste plutonium 130 kg other actinides 6 kg uranium kg fission products 450 kg Two routes possible: 1) Without reprocessing: lifetime rest products 220,000 year 2) With reprocessing + fast reactors: lifetime waste 500-5,000 years volume reduced to 4% up to 100x better use of base material numbers: yearly production Borssele NNV Section Subatomic Physics; November 5, 2010; Lunteren 33
34 Generations of nuclear reactors Generation I Early Prototype Reactors - Shippingport - Dresden, Fermi I - Magnox Generation II - LWR-PWR, BWR - CANDU - VVER/RBMK Generation III Advanced LWRs - ABWR - System AP600 - EPR Evolutionary Designs Offering Improved Economics Generation IV - Highly Economical - Enhanced Safety - Minimal Waste - Proliferation Resistant Gen I Gen II Gen III Gen IV NNV Section Subatomic Physics; November 5, 2010; Lunteren 34
35 Advanced reactors, Generation III reliable and safe due to: redundancy separation diversification less and shorter pipelines large water volumes ABWR (in operation since 1995), EPR, ACR1000, System-80 +,BWR-90 +, KNGR, VVER-91,... NNV Section Subatomic Physics; November 5, 2010; Lunteren 35
36 European Pressurized Water Reactor European Pressurized Water Reactor 4500 MWth reactor building turbine building reactor vessel 4 safety buildings 4 x 100% NNV Section Subatomic Physics; November 5, 2010; Lunteren 36
37 Double containment Concrete Steel Concrete Resistant against the impact of a large airplane NNV Section Subatomic Physics; November 5, 2010; Lunteren 37
38 Passively cooled Core Catcher cooling water NNV Section Subatomic Physics; November 5, 2010; Lunteren 38
39 Advanced, evolutionary designs (Generation III + ) with passive components: natural circulation core cooling convection cooling of the containment heat removal by radiation AP1000, ESBWR, SWR-1000, PBMR, HTRM, GT-MHR, APWR, EP-1000, AC-600, MS-600, V-407, V-392, JSBWR, JSPWR, HSBWR, CANDU-6, CANDU-9, AHWR,... NNV Section Subatomic Physics; November 5, 2010; Lunteren 39
40 Advanced Passive PWR 1117 MWe (Westinghouse VS) NNV Section Subatomic Physics; November 5, 2010; Lunteren 40
41 Passive emergency cooling of the containment NNV Section Subatomic Physics; November 5, 2010; Lunteren 41
42 Passive safety due to fewer components and less piping NNV Section Subatomic Physics; November 5, 2010; Lunteren 42
43 High Temperature Reactor generation III generation III + AVR (Germany, ) HTTR (Japan, 1999) HTR10 (China, 2000) helium as coolant gas turbine process heat: hydrogen production water desalination... inherently safe NNV Section Subatomic Physics; November 5, 2010; Lunteren 43
44 VHTR: : nuclear e-e plus hydrogen production e Idaho 2015? VHTR H 2 Hydrogen Nuclear Heat Oxygen 1 H 2 O O C 900 C 1 H O 2 Rejected H 2 SO 2HI 4 + I 2 Heat C SO 2 +H 2 O H 2 O in, O 2 and H 2 out I 2 I (Iodine) Circulation 2H I + I 2 + H 2 O + H 2 O Water H 2 SO 4 SO 2 +H 2 O S (Sulfur) Circulation SO 2 + H 2 O NNV Section Subatomic Physics; November 5, 2010; Lunteren 44
45 Generations of nuclear reactors Generation I Early Prototype Reactors - Shippingport - Dresden, Fermi I - Magnox Generation II Commercial Power Reactors - LWR-PWR, BWR - CANDU - VVER/RBMK Generation III Advanced LWRs - ABWR - System AP600 - EPR Evolutionary Designs Offering Improved Economics Generation IV - Highly Economical - Enhanced Safety - Minimal Waste - Proliferation Resistant Gen I Gen II Gen III Gen IV NNV Section Subatomic Physics; November 5, 2010; Lunteren 45
46 Gen-IV Roadmap (2002, 97 pages) NNV Section Subatomic Physics; November 5, 2010; Lunteren 46
47 Sustainable Nuclear Energy Platform Strategic Research Agenda (2009, 87 pages) NNV Section Subatomic Physics; November 5, 2010; Lunteren 47
48 The Generation-IV Initiative: sustainable nuclear energy Argentine, Brazil, Canada, France, Japan, South Africa, South Korea, Switzerland, United Kingdom, United States and the European Union The 6 selected reactor concepts Hydrogen production: Very High Temperature Gas Cooled Reactor Evolution of Light Water Reactors: Supercritical Water Cooled Reactor (thermal/fast) Waste reduction and high efficiency: Gas Cooled Fast Reactor Sodium Cooled Fast Reactor Lead Cooled Fast Reactor closed fuel cycle Very innovative: Molten Salt Reactor (epithermal) NNV Section Subatomic Physics; November 5, 2010; Lunteren 48
49 U.S. DOE initiatives Source: US DOE Nuclear Power 2010 Explore new sites Develop business case Develop Generation III+ technologies Demonstrate new licensing process Advanced Fuel Cycle Initiative Recovery of energy value from SNF Reduce the inventory of civilian Pu Reduce the toxicity & heat of waste More effective use of the repository Nuclear Hydrogen Initiative Develop technologies for economic, commercial-scale generation of hydrogen Generation IV Better, safer, more economic nuclear power plants with improvements in safety & reliability proliferation resistance & physical protection economic competitiveness sustainability NNV Section Subatomic Physics; November 5, 2010; Lunteren 49
50 AFCI Approach to Spent Fuel Management Advanced Recycling Closed Fuel Cycle Direct Disposal Conventional Reprocessing Spent Fuel From Commercial Plants Advanced Separations Technologies LWR/ALWR/HTGR Spent Fuel PUREX Pu Uranium MO X Gen IV Fuel Fabrication Gen IV Fast Reactors + ADS Transmuter? Repository LWRs/ALWRs U and Pu Actinides Fission Products Interim Storage less U and Pu Actinides Fission Products Repository Trace U and Pu Trace Actinides! less Fission Products Once Through Fuel Cycle Source: US DOE Current European/Japanese Fuel Cycle Advanced Recycling Closed Fuel Cycle NNV Section Subatomic Physics; November 5, 2010; Lunteren 50
51 Research themes Gen-IV fuel (fast reactors, transmutation, high burn-up, thorium cycle ) materials (corrosion, embrittlement, radiation damage, high temperatures) heat transport multiphase flows neutron data (cross sections of materials) chemical treatment of spent fuel core design system design (safety, efficiency, flexibility, ) safety (decay heat removal) coupling nuclear heat process heat (hydrogen production) gas turbines NNV Section Subatomic Physics; November 5, 2010; Lunteren 51
52 Resumé nuclear energy large scale no CO 2, no air pollution security of supply Positive economical competitive Negative radioactive waste acceptance (safety) large investment proliferation savings, clean fossil and nuclear energy are now necessary to give renewables a chance NNV Section Subatomic Physics; November 5, 2010; Lunteren 52
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