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Four years ago, Chinese scientists completely researched and debugged themselves. After 24 years of hard exploration, they mastered the nuclear reactor technology and became the 8th country in the world to realize the post-treatment of spent fuel.
The so-called spent fuel, here to explain: nuclear power generation is through the nuclear fuel in the nuclear reactor fission reaction to release energy, and the thermal power station to continue to add coal, when the nuclear fuel can not maintain a certain amount of power also need to be replaced, these replaced Nuclear fuel assemblies are called spent fuel.
The reason for the post-treatment of spent fuel is that uranium is limited and it is necessary to extract uranium and plutonium from waste. It is also important that a large number of highly toxic and long-term radiotoxic substances can be separated for safe disposal or Metamorphosis treatment.
According to the Science and Technology Daily, yesterday, the China National Institute of Atomic Energy (Atomic Energy Institute) nuclear fuel post-treatment radiochemical experimental facility (Pinghua Building) conducted the first thermal test.
This thermal test is China's first laboratory scale, full-process power reactor spent fuel post-treatment heat test, will test China's independent research and development of advanced salt-free two-cycle process. Compared to the traditional Purex process, this process simplifies the process, reduces waste and increases the separation factor of uranium and plutonium.
The thermal test is known as the "crown jewel in the crown" of spent fuel reprocessing technology. This time, the experimenter separated the manipulator in the thermal chamber with a huge mechanical arm through a 1.1-meter-thick wall, and the real power pile was lacking. The fuel element is cut into small pieces of 2-5 cm length.
The putting into use of the radiochemical building also indicates that China has taken an important step in independent research and development and mastering the post-processing core technology. The advanced post-processing technology research and development results have entered the critical verification stage before actual application.
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