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Nuclear waste storage plans aren’t as safe as we thought, experts warn via The Independent

Anthony Cuthbertson @ADCuthbertson

Current methods for storing high-level nuclear waste are “severely” unsafe, scientists have warned.

Researchers at Ohio State University discovered that long-term plans to store radioactive waste from nuclear arms production are unsustainable and would result in radioactive materials being released into the environment.

The materials used to store the hazardous waste corrode far more quickly than previously thought, researchers write in a study published in scientific journal Nature Materials detailing their findings.

“This indicates that the current models may not be sufficient to keep this waste safely stored,” said Xiaolei Guo, a deputy director at Ohio State


Finland has begun work on a long-term repository, while the US is also considering a permanent site in Nevada for its waste.

The storage solution involves mixing the waste with other products to form glass or ceramics, before encasing them inside metallic canisters and burying them deep underground.

Due to changes in the chemistry of the nuclear waste over time, the glass and ceramic materials end up causing “severe” corrosion of the metal canisters.

“In the real-life scenario, the glass or ceramic waste forms would be in close contact with stainless steel canisters,” Mr Guo said.

“Under specific conditions, the corrosion of stainless steel will go crazy. It creates a super-aggressive environment that can corrode surrounding materials.”


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