| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compact nuclear reactor capable of performing reactivity control and an emergency shutdown of a reactor core, with the use of only a reflection material.SOLUTION: A nuclear reactor comprises: a reactor core 1 disposed in a pressure vessel 5 and composed of a plurality of fuel assemblies or fuel rods; a coolant for cooling the reactor core; a reflector area 2 disposed in the reactor core; and a liquid reflection material 8 filled in the reflector area 2. The reactivity of the reactor core 1 is controlled by adjusting a liquid level of the reflection material 8 in the reflector area 2.</p> |
