Reactor core of high flux thermal neutron reactor for transmutation

Abstract

The invention discloses a reactor core of a high flux thermal neutron reactor for transmutation and belongs to the nuclear engineering technology field. The reactor core of the thermal neutron reactor is cylindrical and is formed by building a plurality of layers of fuel; each layer of fuel is shaped like a cylinder; a moderator is arranged between two adjacent layers of fuel; the reactor core comprises an internal layer and an external layer; and an internal layer thickness of the moderator is larger than an external layer thickness of the moderator so that neutrons can be better moderated. A quantity of layers of fuel in the external layer is greater than that of layers of fuel in the internal layer, and the thickness of layers of fuel in the external layer is larger than that of layers of fuel in the internal layer, so that sufficient neutron sources are provided to the internal layer to guarantee to obtain quite high thermal neutron flux in the internal layer. The high flux thermal neutron reactor uses the mature thermal reactor technology and the transmuting efficiency is high, so that much significance is provided to the steady development of the nuclear energy industry and the realization of the advanced nuclear fuel recycle system in our country.

Description

technical field [0001] The invention belongs to the technical field of nuclear engineering and relates to a high flux thermal neutron reactor core for transmutation. Background technique [0002] The large-scale development of nuclear power has provided mankind with a large amount of clean energy, meeting the needs of society and residents' lives, but the development has also brought corresponding social and environmental problems. One of the issues that the public is most concerned about is how to dispose of a large amount of high-level radioactive nuclear waste in the spent fuel of nuclear power plants, especially long-lived high-level radioactive waste. Long-lived high-level radioactive waste in spent fuel includes 237 Np, 241 Am, 242 mAm, 243 Am, 243 Cm, 244 Cm and 245 Cm and other minor actinides (Minor Actinides, referred to as MA) and 99 Tc, 129 I and other long-lived fission products (LLFP), which constitute the main long-term radiological hazards to the liv...

AI Technical Summary

Problems solved by technology

The "reprocessing nuclear fuel cycle" can recover part of the uranium, plutonium and other nuclides for recycling. Compared with the "one-time pass" processing method, the utilization rate of uranium, plutonium and other resources has been improved to a certain extent, but its impact on The disposal method of high-level radioactive waste still adopts the disposal method of geological burial, so there are still long-term potential radioactive hazards

Images