| 摘要 |
PURPOSE:To provide a small fast breeder reactor that reduces the amount of heat dissipated outside the reactor and the amount of irradiation of neutrons, can be accommodated by a simple, inexpensive shield structure and a cooling facility, and has high heat utilization efficiency and a long life. CONSTITUTION:A reactor core 2 is provided and a core barrel 3 is provided around the outer periphery of the reactor core 2 and a reflector 4 is provided around the outer periphery of the core barrel 3. The core barrel 3 is supported to the outer periphery of the reflector 4 by means of a support member and a bulkhead 6 constituting the inside wall of a coolant passage 5 for primary coolant is provided and a neutron shield 8 is provided within the coolant passage 5. A reactor vessel 7 constituting the outside wall of the coolant passage 5 is provided around the outer periphery of the neutron shield 8 and a guard vessel 9 is provided around the outer periphery of the reactor vessel 7. |
