Scientists have long known the existence of natural nuclear reactors. It is found in 1956 that when the uranium on the earth is washed, deposited and dehydrated by water to form high-grade uranium-rich uranium deposits, when the uranium concentration is high enough, these deposits can be transformed into a natural self-sustaining reactor.
Running time is too long, which is beyond human's ability. These reactors began to react 2 billion years ago and have been running intermittently for hundreds of thousands of years, which is a very terrible long time for the current reactor life. At present, the operating life of nuclear power plants in the world is generally 30 to 60 years, and the reactors that have been in operation for 60 years have generally experienced life extension and have been greatly repaired. Every year, commercial units will also carry out routine maintenance, which is equivalent to "physical examination plus nursing". Find problems and eliminate defects in time. Regular overhaul usually lasts about 30 days. Without this process, the reactor is likely.
What exactly is a nuclear reactor? A nuclear reactor is a reactor that can spontaneously carry out nuclear reactions for a period of time. The so-called nuclear reaction means that the nucleus is stimulated to decay and can maintain itself under the right conditions. This self-maintenance is called chain reaction until the raw materials are exhausted or the conditions of stimulated decay are no longer met. Of course, chain reactions or nuclear reactors or even atomic eggs are all based on spontaneous and stimulated decay of nuclear nuclei.