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Comparing Energy Sources (Nuclear vs Fossil)
Rizwan-uddinDepartmentofNuclear,PlasmaandRadiologicalEnggIns<tuteofSustainability,Energy,andEnvironmentDirector,MasterofEngineeringinEnergySystems
Paths to a Sustainable Future iSEE Congress University of Illinois September 12-14, 2016
Energy-2030
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A more appropriate title would be NEED FOR QUANTITATIVE
Comparison OF Energy Sources FOR THEIR LIFE CYCLE IMPACT
Paths to a Sustainable Future iSEE Congress University of Illinois September 12-14, 2016 Energy-2030
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Why?
• Competition for base load is still between fossil and nuclear
• It is not the end of fossils • It is not the end of nuclear • Impact on climate is serious (fossil effects) • Nuclear spent fuel issue is only partially
addressed • Probability of nuclear accidents is not zero
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Is it the end-of-the-road for fossils?
• Not quite! • Large scale energy storage still seems far
away
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Secretary Moniz’s
charge to the coal
council to explore
markets for CO2
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http://www.nationalcoalcouncil.org/Documents/CO2-Building-Blocks-2016.pdf
• Not quite! • Large scale energy storage still seems far
away • Competition for base load is still between
nuclear and fossils
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Fossil fuel will be around
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Nuclear has also shown its staying power, despite hiccups!
Nuclear’s fortunes show some wild swings, but after every hiccup, public acceptance of nuclear power has returned to old levels (in many countries)
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After laying low for at least two decades, had it not been for Fukushima and shale gas, nuclear had seemed poised for a major resurgence in the US
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Student Enrollment
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So, both are likely to be around for some time.
How do we make decisions?
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We are often told that we cannot compare
• But, what if we are forced to!!
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An Aside;
• There are plenty of “qualitative” comparisons of energy sources; including fossils, nuclear, renewables.
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http://cesa.org/assets/2011-Files/States-Advancing-Wind-2/CESA-Visual-Impacts-Methodology-May2011.pdf
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Put a $ amount on:
• 1 degree rise in temperature • 2 degree rise in temperature • Sea level rise of n inches
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Put a $ amount on:
• 1 degree rise in temperature • 2 degree rise in temperature • Sea level rise of n inches
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Put a $ amount on:
• 1 degree rise in temperature • 2 degree rise in temperature • Sea level rise of n inches
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Put a $ amount on:
• 1 degree rise in temperature • 2 degree rise in temperature • Sea level rise of n inches
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Put a $ amount on:
• 1 degree rise in temperature • 2 degree rise in temperature • Sea level rise of n inches
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But, what we need is a methodology for “quantitative”
comparison?
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CHALLENGES?
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Cost & Risk • Challenge:
Evaluation of cost and risks associated with different energy sources and associated technologies over large spatial scales and over large spans of time—spanning centuries—coupled with the science of relatively rare events. Should cost
be in $s or life
expectancy, or …
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Time Scale: Nuclear side
NPRE 201 Part 4: Nuclear
Most intense radioactivity in spent fuel. Most immediate hazards come from strontium-90 and cesium-137.
IAEA
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Time Scale: Fossil side
• We have some understanding of how long CO2 stays in the atmosphere
• But much less for how long the impact of a climate change that has taken place, will last
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Cost & Risk
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Cost & Risk
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Cost & Risk
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Cost & Risk
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Cost & Risk
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Cost & Risk
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Cost & Risk
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Cost & Risk
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International Union for Conservation of Nature (IUCN)
• hCps://www.theguardian.com/environment/2016/sep/05/soaring-ocean-temperature-is-greatest-hidden-challenge-of-our-genera<on
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Put a $ amount on:
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• LotsofCO2(usuallyintheatmosphere)vsveryhighlyconcentrated(butsmallinvolume)radioac<vewaste
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Put a $ amount on:
• Chernobyl accident • Fukushima nuclear accident • Fukushima tsunami • 1 degree rise in temperature • 2 degree rise in temperature • Sea level rise of n inches
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• Number of Severe Nuclear Accidents over the next 100 years? 1000 years?
• Cost associated with an accident at Yucca mountain fuel repository
• Real, long term cost of fracking
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What is needed?
• Risk analysis • Uncertainty quantification (UQ) • Economic analysis • Social science to associate “cost of
disruptions” in life, etc • Incorporate flexibility to include different
value systems in the model • Impact on current, near future, and
distant future; (different weights?)
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Thank you
Q and
Comments?
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Nuclear Waste Disposal, Radioactivity, and
Accidents • Units for measuring radioactivity – 1 curie = amount of material that produces 3.7 x 1010 nuclear decays per
second, equivalent to the activity of 1 gram of radium. – 1 becquerel = amount of material producing 1 nuclear decay per second
• Absorbed Dose of Radiation – 1 rad is defined as the absorbed radiation dose of 0.01 joules of energy
per kilogram of tissue. – 1 gray is defined as 1 joule of deposited energy per kilogram of tissue
• Biologically Effective Dose is the absorbed dose multiplied by the relative biological effectiveness of radiation to get the biological dose equivalent in rems or sieverts. – 1 rem is the radiation dose in rads multiplied by the relative biological
effectiveness – 1 sievert is equal to 100 rems (SI unit) – Light radiation sickness begins at about 50–100 rad
NPRE 201 Part 4: Nuclear
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• http://www.nationalcoalcouncil.org/Documents/CO2-Building-Blocks-2016.pdf