What is Used Nuclear Fuel? Erik Kremer Senior Engineer, Used Fuel - PowerPoint PPT Presentation

Feb 01, 2024 •103 likes •249 views

What is Used Nuclear Fuel? Erik Kremer Senior Engineer, Used Fuel Safety Assessment What is Used Nuclear Fuel? Discussion Topics How is it made? What does it look like? What is it used for? Why is it hazardous? Where is it

What is Used Nuclear Fuel? Erik Kremer Senior Engineer, Used Fuel Safety Assessment
What is Used Nuclear Fuel? Discussion Topics • How is it made? • What does it look like? • What is it used for? • Why is it hazardous? • Where is it now? 2
Nuclear Fuel Cycle in Canada 3
CANDU Fuel 4
CANDU Reactor • About 5,000 fuel bundles per reactor • Each bundle stays in reactor for about 15 to 18 months 5
CANDU Fuel One fuel bundle . . . • Is about the size of a fireplace log • Can power 100 homes for a year • Contains about 20 kg uranium Used nuclear fuel is a potential health risk for a very long time. It must be safely contained and isolated from people and the environment, essentially indefinitely. 6
Used Nuclear Fuel is Radioactive 7
8
2.6 Million Fuel Bundles Safely Stored 9
Wet Storage • Used nuclear fuel initially very hot and highly radioactive • Stored in water pools for cooling and shielding • Pool water kept separate from other water • After 7 to 10 years, used fuel cool enough to move to dry storage 10
Dry Storage 11
Fuel Bundle • Used fuel pellets are held in sealed tubes • Zircaloy metal is extremely strong • Zircaloy metal is corrosion-resistant 12
Fuel Pellet • High density ceramic • Extremely durable • Does not readily dissolve 13
Thank you 15

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