Title:
液中の放射性微粒子除去システムおよび液中の放射性微粒子除去方法
Document Type and Number:
Japanese Patent JP6815923
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize a system and a method for removing radioactive particles in fluid capable of: securing safety by measuring radiation; and collecting particles from treat water containing those which have been unable to be separated through filtering.SOLUTION: In a method for removing radioactive particles in fluid, radioactive particles 5 which pass through a metal mesh 10 used as a filter is collected in a manner that agglomerates the same with an agglomerating agent 4 and settles agglomerated particles on a bottom section of an agglomeration water separation device 3. When radiation detected through a neutron measuring device 1 and a gamma-ray camera 2 exceeds a predetermined level, water circulation in a pressure vessel 8 is stopped and, then, residual water in the agglomeration water separation device 3 is returned to the pressure vessel 8. By reducing an amount of the residual water in the agglomeration water separation device 3, the method facilitates a treatment of the radioactive particles 5 stored in the agglomeration water separation device 3.SELECTED DRAWING: Figure 1
Inventors:
Yasuo Yoshii
Kani Yuko
Takashi Asano
Kani Yuko
Takashi Asano
Application Number:
JP2017081574A
Publication Date:
January 20, 2021
Filing Date:
April 17, 2017
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
G21F9/10; G01T1/167; G01T3/00; G21F9/06; G21F9/30
Domestic Patent References:
| JP55151283A | ||||
| JP58144791A | ||||
| JP62215894A | ||||
| JP1100500A | ||||
| JP7043497A | ||||
| JP8105995A | ||||
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| JP2016077972A | ||||
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Foreign References:
| US4842812 |
Attorney, Agent or Firm:
Kaichi International Patent Office