CONTAINER FOR TRANSPORTATION AND/OR STORAGE OF SPENT NUCLEAR FUEL Russian patent published in 2012 - IPC G21F5/08 

FIELD: physics.

SUBSTANCE: container has a housing. The housing has inner and outer cups with bottoms, placed with a radial spacing. The annular space between the cups with filled with filling composition. High-thermal conductivity elements are passed through the filling composition. The inner cup and its bottom are made as a single unit from spheroidal graphite ductile cast iron. The container has an air-tight cover for the inner cavity of the container, which is in form of at least two covers placed one on top of the other on the cap of the inner cup. The cap of the inner cup and the outer cup are fastened by threaded joints. The value of the radial spacing and the thickness of the circular neutron shield layer, the thickness of the wall of the inner and outer cups and physical characteristics of the materials used are linked by the following relationships: 0.4≤A/B≤1; 2300 (kg/m²)≤ρ_ci(A+B)+ρ_fC≤2700 (kg/m²), where A is the thickness of the all of the outer cup, m; B is the thickness of the wall of the inner cup, m; C is the thickness of the circular neutron shield layer, required for shielding neutron radiation of the spent nuclear fuel loaded into the container, m; ρ_ci is the density of spheroidal graphite ductile cast iron, kg/m³ ; ρ_f is the density of the material of the filling composition, kg/m³.

EFFECT: invention enables to make a high technology container for transporting and storing spent nuclear fuel.

8 cl, 2 dwg