Title:
放射線計測装置
Document Type and Number:
Japanese Patent JP6867884
Kind Code:
B2
Abstract:
To provide a compact radiation measurement device capable of correctly specifying a position of a measurement object.SOLUTION: A radiation measurement device 1 of the present invention is a radiation measurement device capable of measuring a position at which a measurement object b such as a spent nuclear fuel including a radioactive material exists, and includes: a gamma ray collimator 111 having a substantially cylindrical shaped cylindrical body 112 which reduces a gamma ray and permits incidence of neutrons; a radiation detector 210 connected to this gamma ray collimator 111 and having a neutron converter 212 sensitive to thermal neutrons and measuring an energy imparted by the gamma ray and the thermal neutrons; a gamma ray shield body 311 provided so as to cover a region other than the gamma ray collimator 111; a neutron absorbing element 312 provided so as to cover the region other than the gamma ray collimator 111; and a neutron moderator 411 filled inside the cylindrical body 112.SELECTED DRAWING: Figure 1
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Inventors:
Ueno Katsunori
Koichi Okada
Yuichiro Ueno
Takahiro Tadokoro
Yasushi Nagumo
Shuichi Hatakeyama
Tomohiko Motoki
Takashi Hayada
Koichi Okada
Yuichiro Ueno
Takahiro Tadokoro
Yasushi Nagumo
Shuichi Hatakeyama
Tomohiko Motoki
Takashi Hayada
Application Number:
JP2017109509A
Publication Date:
May 12, 2021
Filing Date:
June 01, 2017
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
G01T3/08; G01T1/167; G01T1/20; G01T3/06; G01T7/00
Domestic Patent References:
| JP2015187567A | ||||
| JP2010048799A | ||||
| JP2015121510A | ||||
| JP2017020820A | ||||
| JP2016121896A |
Attorney, Agent or Firm:
Wilfort International Patent Office