Abstract:
PROBLEM TO BE SOLVED: To provide a radioactive product removal system and a method for removing a radioactive product.SOLUTION: A post-accident fission product removal system 100 may include an air mover 104, a filter assembly 106 and/or an ionization chamber 116. The air mover 104 may be configured so as to generate filtered air by passing contaminated air through the filter assembly 106. The ionization chamber 116 may be connected to the filter assembly. The ionization chamber 116 may include an anode and a cathode. The ionization chamber 116 may be configured to generate clean air by receiving the filtered air from the filter assembly, ionizing the filtered air and thereby capturing a radioactive isotope.
Abstract:
PROBLEM TO BE SOLVED: To provide a photochemical reactor capable of enhancing use efficiency of laser light in photochemical reaction, and to provide a method of enriching an isotope using the photochemical reactor.SOLUTION: The photochemical reactor includes: a vessel 21 for optical transmissive reaction for supplying a process gas and photochemically reacting the process gas by laser light; a metal mirror 19 arranged on the outside of the vessel 21 for the optical transmissive reaction so as to surround the vessel 21 for the optical transmissive reaction and reflecting the laser light; and a cryostat 11 composed to store the vessel 21 for the optical transmissive reaction, the metal mirror 19 and a cryogenic liquid 12 and for cryogenically holding the temperature of the metal mirror 19 with the cryogenic liquid 12.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for concentrating oxygen containing such heavy components of oxygen isotopes that no ozone is concentrated with high concentration, without degrading ozone concentration efficiency while unnecessarily filling dilution gas. SOLUTION: This invention relates to the method of concentrating oxygen containing heavy components of oxygen isotopes by selectively decomposing ozone containing heavy components of oxygen isotope into oxygen with irradiation with a laser beam of a specific wavelength, wherein dilution gas for preventing concentration of ozone is introduced into a distillation column and, and as warm fluid of a reboiler installed in the bottom of the distillation column, a fluid having the same components as the dilution gas is used, and when distillation operation stops, the liquefied warm fluid is supplied as the dilution liquid of ozone to the bottom of the distillation column. COPYRIGHT: (C)2011,JPO&INPIT