Nuclear Reprocessing-Presentation

Nuclear Reprocessing-Presentation - Nuclear Fuel...

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Nuclear Fuel Reprocessing By Daniel Bolgren Jeff Menees
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Goals of the Project 1. Develop a reprocessing technique that can: 1. Reprocess used nuclear fuel. 2. Reduce proliferation concerns. 2. Optimize a reprocessing location using: 1. Current storage location. 2. Transportation feasibility.
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Overview ± Briefly explain of Nuclear Fission ± Background of Nuclear Fuel Reprocessing ± Nuclear Fuel Cycle ± Alternative Reprocessing Technique ± Crown Ether Extraction Process ± Proposed Reprocessing Facility ± Location optimization ± Transportation feasibility ± Long Term Storage ± Yucca Mountain
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Nuclear Energy
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Nuclear Fuel Bundle
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Nuclear Chain Reaction?
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Fission Products
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Fission Efficiency Neutron
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Reprocessing-Re-using Nuclear Fuel
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Background of Reprocessing ± Began in 1940’s ± Fission Byproduct ± Plutonium ± Nuclear Weapons ± Nuclear Proliferation ± 1977 ± Presidential Directive ± Interest in next generation reactors ± Reprocessed Uranium
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Enrico Fermi
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NUCLEAR FUEL CYCLE
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Nuclear Fuel Cycle ± Uranium Ore ± Starting raw material for nuclear fuel ± Typically contains .05 to .3 wt% U 3 O 8 ± Available isotopes U 238 and U 235 ± Approximately 99.28% U 238 and .71% U 235
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Nuclear Fuel Cycle ± Mined uranium ore is milled to isolate the U 3 O 8 ± Milling is typically accomplished through chemical leaching ± Produces Solid U 3 O 8 commonly referred to as “Yellow Cake”
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Nuclear Fuel Cycle ± Uranium Conversion ± Required by enrichment facilities ± Uranium hexafluoride ± UF 6 ± Typically enrichment from .71 to 3.5% U 235 depending on reactor specifications. ± Alternative Uranium Conversion ± Ceramic Grade Uranium dioxide UO 2 ± CANDU-Reactors
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Nuclear Fuel Cycle ± Enrichment ± Fabrication ± Enriched Uranium Pellets ± Generally placed in fuel rods to meet specific core specifications ± Fuel rod casing ± Stainless Steel ± Zirconium ± Fuel Rod Bundles
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Nuclear Fuel Cycle ± PWR/BWR most common fuel rod configuration ± Typically put into bundles of 6 to 8 individual fuel rod assemblies ± Depending on Energy Production requirements ± 2 to 6 year life span ± Fuel rod adjustments ± Often require adjusting during operation
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Recycle Nuclear Fuel
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Options for “Spent Fuel” ± Storage ± Short Term storage ± Spent Fuel Pool ± Dry Cask ± Long Term Storage ± Yucca Mountain ± Environmental Concerns ± Transportation ± Reprocessing ± Environmental Concerns ± Economical-Political ± Includes Long Term Storage
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Nuclear Fuel Cycle ± Spent Fuel Storage ± Continues to generate heat after removal from reactor ± Spent fuel pool ± Storage time ranges from 1-5 years depending on initial reactor operating conditions
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Nuclear Fuel Cycle ± Dry Cask Storage ± Required after spent fuel pool ±
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This note was uploaded on 08/31/2011 for the course CHE 4273 taught by Professor Staff during the Spring '10 term at Oklahoma State.

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Nuclear Reprocessing-Presentation - Nuclear Fuel...

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