1,000,000 years
yes, Nuclear fission as used in nuclear power plants produces radioactive waste with long half lives. However, this creates no problems. This wastes are either confined in the spent nuclear fuel (that is stored either in wet storage or in dry storage facilities) or stored as vitrified nuclear waste.
This is a trick question Nuclear waste should not be stored at all. But as we have some and need to store it, where is an important consideration. Transport is risky. Where you store it has to be able to handle it if it leaks for a million years or so, at least until its safe to handle. The US government has a facility that sounds good, A old salt mine that could hold the danger for a very long time. But is it really in a geologically stable place? Can it leak waste? Will there be an accident moving the waste? Should special storage be built where the waste is?
The radioactive fission products from a nuclear reactor are contained in the spent fuel and they stay there whilst the fuel is stored under water or eventually in concrete flasks. Waste will only be produced if and when the spent fuel is broken down and chemically treated, probably to separate out the U-238 and plutonium, which may be worth doing. The waste is then the proportion which is not useful and it will consist of the fission products, ie a range of different elements and their isotopes, many of which are highly radioactive. This material is highly dangerous to life and must be stored safely for a long time (centuries)
Spent fuel is stored under water because the residual radioactivity of the fission products is still appreciable and has a long half life. If there is any slight damage to the fuel cladding, probably due to corrosion, even a pinhole fault, the water can become contaminated, and it's difficult to clean up.
Nuclear wastes are sometimes said to be a problem too difficult to solve because the waste stays radioactive for so long. The only thing that gets rid of nuclear waste is time.
Nuclear waste is typically stored in secure facilities called nuclear waste repositories. These repositories are specially designed to safely contain and isolate the radioactive waste from the environment for long periods of time.
Thousands of years
Radioactive waves
yes, Nuclear fission as used in nuclear power plants produces radioactive waste with long half lives. However, this creates no problems. This wastes are either confined in the spent nuclear fuel (that is stored either in wet storage or in dry storage facilities) or stored as vitrified nuclear waste.
One potential negative effect of nuclear fusion is the production of radioactive waste. While fusion produces less long-lived radioactive waste compared to fission, the materials used in the reactor can become activated and need to be safely managed and stored.
Nuclear energy generates radioactive waste in the form of spent nuclear fuel, which contains radioactive isotopes. This waste must be stored and managed properly due to its long-term hazardous nature.
Uranium waste is typically stored in secure facilities called nuclear waste repositories. These facilities are designed to safely contain and isolate radioactive waste from the environment for long periods of time. Additionally, some waste may be reprocessed or recycled to extract useful materials and reduce the volume of waste.
There are arguments about where to store waste.
Nuclear wastes from nuclear power plants are typically stored in special containers made of materials like steel and concrete. These containers are designed to prevent leakage of radioactive material and are often stored in secured locations such as underground repositories or dry cask storage facilities. The goal is to safely isolate the waste from the environment for long periods until it reaches a level of radioactivity that is no longer harmful.
ocean
Nuclear waste products can leave isotopes that contaminate the environment and cause heath problems.
There are arguments about where to store waste.