The storage method used for radioactive wastes generated from fission nuclear reactors must be designed to last for how long?

The storage method used for radioactive wastes generated from fission nuclear reactors usually designed to last about 30 years or more depending on what waste it is. Radioactive waste is composing of layers of isotopes.  The radioactive isotopes will eventually decay, some just in an hour or minutes, others very slowly. Strontium-90 for example usually has a life of about 30 years. Plutonium-239 on the other side lasts 24,000 years.

Explanation:

Nuclear power generates energy on a very high scale. The by product of the nuclear generation is the radioactive waste.

The radioactive waste contains the radioactive material. To store the radioactive wastes which is generated from the fission nuclear reactor, it is designed to last for years.

The time taken for the storage of the radioactive waste depends on the type of waste. The radioactive wastes are of two level: Low level waste and high level waste.

Low level waste contains the short lived radioactivity. High level radioactive waste is highly radioactive material. It occurs inside the nuclear reactions.

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