# US 2010/0163746 A1 · Irradiation device for material test using gamma ray from spent nuclear fuel assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0163746 A1 - Document ID: US20100163746A1 - Status: Published application - Kind: A1 - Application number: 11/754,050 - Filed: 2007-05-25 - Published: 2010-07-01 - Earliest claimed: 2006-05-29 - Assignees: Korea Atomic Energy Research Institute; Korea Hydro & Nuclear Power Co., Ltd. - Inventors: Il Je CHO; Eun Pyo LEE; Dong Hak KOOK; Kie Chan KWON; Won Kyung LEE; Jeong Hoe KU; Won Myung CHOUNG; Gil Sung YOU; Ji Sup YOON - Web page: https://patentgrep.com/patent/US20100163746A1 ## CPC - G21K 1/025: {using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation} - G21G 4/06: characterised by constructional features - G21K 5/02: having no beam-forming means - G21K 5/10: with provision for relative movement of beam source and object to be irradiated - G21K: HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES - G21G: CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES (applications of radiation in general G21H5/00; handling particles, e.g. neutrons, or electromagnetic radiation not otherwise provided for G21K) ## Abstract The present invention relates to an irradiation device for material test using a gamma ray radiated from a spent nuclear fuel assembly and provides the irradiation device for material test using a gamma ray radiated from a spent nuclear fuel assembly wherein an irradiation device for material test to achieve a radiation effect evaluation is manufactured to be movable upward, downward and horizontally in order to study the hardening phenomenon of the frail materials to the radiation among the atomic power facilities using a gamma ray radiated from a spent nuclear fuel assembly, thereby it is possible to adjust a position of the spent nuclear fuel used for material test using a gamma ray radiated from a spent nuclear fuel and a test material, identify a distance between the spent nuclear fuel and the test material easily with a scale and evaluate the radiation effects on the materials used at facilities handling a spent nuclear fuel under the same situation as they are really exposed. Further the present invention comprises a support constructed vertically; a vertical moving table which is capable of moving upward and downward connected with a proper position of the support; a moving device for moving said vertical moving table upward and downward; a horizontal moving table which is capable of moving horizontally placed on the vertical moving table; a horizontal moving bar which is capable of moving horizontally placed on the vertical moving table; and a driving device for driving the horizontal moving table and the horizontal moving bar horizontally. ## Claims ### Claim 1 An irradiation device to test material using gamma rays radiated from a spent nuclear fuel assembly, the irradiation device comprising: a support constructed vertically; a vertical moving table movable upward and downward and connected with a position of the support; a moving device to move the vertical moving table upward and downward; a horizontal moving table movable horizontally and disposed on the vertical moving table; a horizontal moving bar movable horizontally and disposed on the vertical moving table; and a driving device to drive the horizontal moving table and the horizontal moving bar horizontally. ### Claim 2 (depends on 1) The irradiation device of claim 1, wherein the support comprises shaped steels, each having two wings and both wings spaced apart from each other by a fixed distance, a bottom plate disposed horizontally under the shaped steels, a flat plate having a plate body disposed in front of the shaped steels with a longitudinal direction, and a linear guide rail disposed on each of the right side and the left side of the front of the flat plate. ### Claim 3 (depends on 2) The irradiation device of claim 2, wherein a guide having a flat plate body is disposed on a front-top of the flat plate, the guide is connected with the flat plate by a plate body and a guide hole is pierced on the top of the guide through the flat plate body. ### Claim 4 (depends on 2) The irradiation device of claim 2, wherein a support plate having a plate body is constructed on the top of the back side of the flat plate. ### Claim 5 (depends on 1) The irradiation device of claim 1, wherein the vertical moving table comprises an upper plate comprising a plate body, a lower plate spaced apart from the upper plate by a fixed distance the lower plate substantially the same size and shape as the upper plate and a vertical flat plate disposed vertically on a one end of the upper plate and a corresponding one end of the lower plate. ### Claim 6 (depends on 5) The irradiation device of claim 5, wherein both sides of the one ends of the upper plate and the lower plate have L-shaped coupling parts respectively and a plurality of slider blocks are disposed in the vertical direction to each of the coupling parts. ### Claim 7 (depends on 5) The irradiation device of claim 5, wherein a scale comprising a fixed length is disposed on a position of the upper plate. ### Claim 8 (depends on 1) The irradiation device of claim 1, wherein the moving device comprises a moving handle to apply a turning force, a decelerator to reduce the turning force provided by the moving handle, a bevel gear to apply a torque increased according as the turning force is reduced by the decelerator, a ball screw comprising a round bar shape connected with the bevel gear and a ball screw nut placed on a position of the ball screw. ### Claim 9 (depends on 1) The irradiation device of claim 1, wherein the horizontal moving table comprises a moving plate formed to be a plate body, a ball screw having a ball screw nut connected to a lower side of the moving plate, a bevel gear connected to one of the ends of the ball screw and a hinge bracket connected to the bevel gear. ### Claim 10 (depends on 9) The irradiation device of claim 9, wherein a plurality of slider blocks are placed on both sides of the lower side of the moving plate and a linear guide rail for moving the moving plate is combined with the slide blocks. ### Claim 11 (depends on 9) The irradiation device of claim 9, wherein a fixed part of a pointer in a position on the moving plate in the shape of a wedge is exposed to the outside. ### Claim 12 (depends on 1) The irradiation device of claim 1, wherein the horizontal moving bar comprises a moving piece in the shape of square bar, a ball screw having a ball screw nut connected with one end of the moving piece, a bevel gear connected with one end of the ball screw and a hinge bracket connected with the bevel gear. ### Claim 13 (depends on 12) The irradiation device of claim 12, wherein a slider block is formed on the end of the moving piece, a slide bar is connected with the slider block by inserting therein and an end of the slide bar and the ball screw nut are connected by a damping spring. ### Claim 14 (depends on 12) The irradiation device of claim 12, wherein brackets comprising a guide roller for guiding a movement of the moving piece are disposed respectively on both sides of the moving piece. ### Claim 15 (depends on 12) The irradiation device of claim 12, wherein a scale is disposed on the upper side of the moving piece. ### Claim 16 (depends on 1) The irradiation device of claim 1, wherein the driving device comprises a long driving bar comprising a round bar shape and a driving handle disposed on the top end of the driving bar. ### Claim 17 (depends on 1) The irradiation device of claim 1, wherein a shield and a storage reservoir for holding an atomic power material is further included. ### Claim 18 (depends on 17) The irradiation device of claim 17, wherein the reservoir comprises the shape of a hexahedron with an open top which comprises a housing comprising an atomic power material and shielding body therein and a lid disposed on the open top of the housing. ### Claim 19 (depends on 18) The irradiation device of claim 18, further comprising a gasket interposed between the housing and the lid. ### Claim 20 (depends on 18) The irradiation device of claim 18, wherein the shielding body comprises an upper shielding body, a lower shielding body and a setting groove to insert and install the atomic power material into one side of the lower shielding body.