Title:
中性子ラジオグラフィの実現のための方法及び装置
Document Type and Number:
Japanese Patent JP6943944
Kind Code:
B2
Abstract:
The invention relates to neutron radiography and can be used for the examination of elongate radioactive items, primarily nuclear fuel elements, and also for the non-destructive testing of irradiated and non-irradiated objects in order to determine the internal structure and material composition thereof. The present method consists in placing an object under examination into a protective container (3); placing the container on a bed (4) via a mounting seat (5) and rigidly securing the object therein; mounting, in a groove (8) in a limb (7), a first detector (11); setting an angle (+α) between the direction of radiation and the detector; supplying a neutron beam (1); mounting a second detector (12) in said groove; setting an angle (-α) between the direction of radiation and the detector; carrying out irradiation; and processing exposed films to obtain images at an angle of ±α. An apparatus for the implementation of a method for testing items, which comprises a source of neutrons, a protective container (3) and a detection system, additionally comprises a bed (4), having disposed thereon a detection system in the form of a rotatable limb (7) with a mounting seat (5) for securing neutron detectors (11, 12) in the form of a diametric groove (8), said limb being mounted such as to be rotatable by a set angle about an axis parallel to the axis of the object under examination, and having a semi-circular recess (13) therein for the passage of an elongate object as the limb rotates by an angle ±αrelative to the direction of a neutron beam (1).
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Inventors:
Istov, Alexei Leonidovich
Croshkin, Nikolai Ivanovich
Nevelov, Vitaly Alexandrovich
Croshkin, Nikolai Ivanovich
Nevelov, Vitaly Alexandrovich
Application Number:
JP2019503277A
Publication Date:
October 06, 2021
Filing Date:
July 18, 2017
Export Citation:
Assignee:
State Atomic Energy Corporation Los Atom on Behalf of the Russian Federation
International Classes:
G01N23/05; G01N23/044; G01T3/00; G21C17/10
Domestic Patent References:
| JP2009168496A | ||||
| JP56042187A | ||||
| JP50118778A | ||||
| JP3277996A |
Foreign References:
| US20120019510 |
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Shigeru Iino
Sanae Kaneko
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Shigeru Iino
Sanae Kaneko