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A comment on Finland's plan to bury spent nuclear fuel for 100k years. Parent comment

Re:Finland's plan to bury spent nuclear fuel for 100k years by acidburnNSA on Friday June 16, 2023 @11:13AM (#36357958)
Countries that reprocess nuclear waste still need a deep geologic repository for the fission products and minor actinides due to process losses. Reprocessing reduces the number of repositories you need for a given fleet size, but you still need a repository.
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Re:Finland's plan to bury spent nuclear fuel for 100k years by pdonis on Friday June 16, 2023 @11:23AM (#36358160)
> Countries that reprocess nuclear waste still need a deep geologic repository

That's possible, but even if it's done, it's only necessary for hundreds of years (because the radioactive isotopes left over have much shorter half-lives), not 100,000 years. Big difference.

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Re:Finland's plan to bury spent nuclear fuel for 100k years by acidburnNSA on Friday June 16, 2023 @12:37PM (#36359541)
Radiotoxicity does indeed drop to ore levels in 300-500 years but even then there are a few problem actors. Partitioning and transmutation can help with these, probably.

https://en.wikipedia.org/wiki/Long-lived_fission_product

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Re:Finland's plan to bury spent nuclear fuel for 100k years by pfdietz on Friday June 16, 2023 @04:11PM (#36363143)
I consider the elements containing those isotopes to be prime candidates for space disposal, not burial.
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