The service conditions of ductile iron nuclear spent fuel container are harsh, the performance requirements are strict, especially the low temperature performance. In addition, it also requires excellent shielding of radioactivity and prevention of unexpected accidents (such as earthquake, volcano, being hit by missiles in transportation, etc.), so the International Atomic Energy Agency (IAEA) has formulated the “safety regulations for transportation of radioactive materials”. On this basis, several major countries in the world have formulated corresponding performance and organization requirements.
The performance and organization of the ductile iron nuclear spent fuel container produced by Xinbei company of Germany are specified. During the development of spent fuel container made of nodular iron by Nippon Steel and Nippon Steel, the microstructure, properties and impact initial properties of the simulation block are analyzed and summarized. Meanwhile, the ferrite content in the matrix should not be less than 90%.
Considering the possible accidents during the storage and transportation of spent nuclear fuel, simbei company of Germany has made the following regulations for its production of ductile iron spent nuclear fuel container: burning at 800 ° C for 30 minutes, 9-meter landing test, 0.5T projectile shooting at the container at sound speed. According to the International Atomic Energy Agency (IAEA) safety code for transport of radioactive materials, China has formulated the standard gb11806, which stipulates that the ductile iron nuclear spent fuel container can only be used for storage and transportation of Nuclear Spent Fuel after 9-meter drop test, 1-meter penetration test, 30 minute fire at 800 ° C and 15 meter water immersion test.
In the 1990s, China had the experience and ability to produce 20 ton ductile iron nuclear spent fuel container. Ding Linpu, Ren Shanzhi and others developed and produced 20 ton ductile iron nuclear spent fuel container. According to the actual requirements of nuclear power plant, the performance and organization of 100 ton ductile iron nuclear spent fuel container are specified.