| 摘要 |
PROBLEM TO BE SOLVED: To reduce the corrosion of material of a reactor pressure vessel or the like in a supercritical pressure nuclear reactor, resulting from fast neutron irradiation. SOLUTION: In this supercritical pressure nuclear reactor, subcritical water is introduced into the reactor pressure vessel 101 as a coolant and a moderator, and heated in a core 102 to produce supercritical water, and the supercritical water is supplied to the outside, In the reactor, a circular downward flow part 115 where the subcritical water introduced into the reactor pressure vessel flows is installed in the reactor pressure vessel, along a part near the core on the wall of the reactor pressure vessel. In addition thereto, or as a substitute therefor, a stay part 105 where the subcritical water stays is installed on the periphery of the core.
|
