Dragon Boat - CNSC spent fuel transport containers with boron carbide aluminum neutron absorber plate and container prototype
Dragon Boat - CNSC spent fuel transport container prototype prototype acceptance meeting
Neutron absorbing material, also known as neutron poisonous material, absorbs thermal neutrons by its large neutron absorbing cross-section material (such as boron, cadmium, gadolinium, etc.) to inhibit nuclear fission chain reaction, and is mainly used for nuclear fuel and lack of Fuel storage and transportation, so as to ensure the sub-critical safety of storage and transportation.Cobium Boron Reinforced Aluminum (B4C / Al) neutron absorbing material is a new type of aluminum matrix composites formed by adding B4C particles into aluminum matrix, High content, low density and high thermal conductivity, etc. In recent years, neutron absorbing materials such as boron stainless steel have been widely replaced in foreign countries for the high density storage and transportation of nuclear fuel / spent fuel.China's commercialization of nuclear power, neutron The research and development of absorbent materials lagged far behind. B4C / Al neutron absorbing materials have been relying on imports for a long time, seriously restricting the development strategy of China's nuclear power independence and going global.
In recent years, the research group headed by Ma Zongyi, a researcher at the Institute of Metal Research of the Chinese Academy of Sciences, has conducted research in cooperation with China Nuclear Power Engineering Co., Ltd. on the preparation of B4C / Al neutron absorbing materials, performance evaluation of simulated environmental service, and full-size engineering parts The problem of interface control during the preparation of large size billet was overcome and the bottleneck of high efficiency and high yield rolling of high content B4C / Al sheet was broken through, and the welding tools and welding technology suitable for composite material welding were developed. Materials developed to the device forming the whole chain of technical approach for the engineering application of the material laid a solid foundation has been developed B4C content of 15 to 35wt% of neutron absorption plate series, and completed the accelerated corrosion, high temperature aging, Accelerated irradiation and boron uniformity test (neutron absorption method) and other experimental assessment, the material fully meet or (such as corrosion resistance, etc.) was significantly better than similar foreign products.
Since 2014, the Metallurgical Institute has provided prototypes for two major projects, namely, Design and Manufacturing Technology Project of Nuclear Fuel Component Transport Container and Nuclear Fuel Component Transport, Storage Container Design and Manufacturing Technology and Transportation Process Technology Project of Nuclear Fuel Component A number of batches of B4C / Al sheet, the first to achieve the domestic supplier of B4C / Al neutron absorber material supply. In May 2014 supply of neutron absorber plate for the national science and technology major projects and nuclear group science and technology special 'dragon boat - Recently, the prototype passed the acceptance test at Xi'an Nuclear Equipment Co., Ltd. This indicates that China has independently developed a large-scale spent fuel transport container to fill the gaps in the domestic market, which is of great significance to the transportation of spent fuel in China Milestone.As a key part of the localization of key materials for spent fuel transport container, B4C / Al neutron absorbing material developed by the metal has provided important support for the full localization of the container and laid a foundation for the wider application of the material.
At the same time, the metal for the first global high temperature gas-cooled reactor for new fuel components transportation, storage containers for neutron absorber material cylindrical structure needs of the first time in the country neutron absorption material of the coil plate operation and friction stir welding achieved Sub-absorbent material from the plate structure to the cylindrical structure of the breakthrough.Currently Huaneng Shandong Shidao Bay Nuclear Power Station HTR nuclear power plant demonstration project of new fuel components transportation, storage container has formally entered the mass production stage, the metal to undertake the container Neutron absorber plate supply mission.
At present, the research group is devoted to developing a high-temperature structure-functional integrated B4C / Al neutron absorber for the next generation of spent fuel dry storage containers. The research has obtained NSFC-Liaoning Province Joint Fund, Surface Fund, Chinese Academy of Sciences Youth Innovation Promotional projects such as support.
