Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Ji Sup Yoon

Hyo Jik Lee

Won Kyung Lee

Eun Pyo Lee

Gil Sung You

Il Je Cho

Won Myung Choung

Jeong Hoe Ku

Kie Chan Kwon

Dong Hak Kook

Jong Kwang Lee

Byung Suk Park

Dong Hee Hong

Tae Hoon Lee

Young-Hwan Kim

Sung-Hyun Kim

Ki Ho Kim

Ho Dong Kim

Myung Kook Moon

Byung-Suk Park

June Sik Joo

Jae-Hoo Jung

Kwang Jun Park

Chang Hwan Choi

Hee Sung Shin

Kwang Ho Yoon

Jung Hwan Jung

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.

Irradiation device for material test using gamma ray from spent nuclear fuel assembly

A joint tong apparatus for a radiation shielding facility. A spherical ball has a through-hole. An inner spherical socket and an outer spherical socket are installed in a hole formed in a partition between a radiation-shielded room and a control room so as to enclose the spherical ball on inner and outer sides. A bar is inserted and coupled into and to the through-hole of the spherical ball. An inner joint assembly has a first housing coupled to a shielded room-side end of the bar and a first pivot member pivotably mounted on a free end of the first housing. An outer joint assembly having a second housing coupled to a control room-side end of the bar and a second pivot member pivotably mounted on a free end of the second housing. The apparatus further includes a tong assembly, a handle assembly, a tong manipulation cable, and a pair of pivot manipulation cables.

Joint tong apparatus for radiation shielding facility

An apparatus and system for separating remaining powder of hulls includes a first remaining powder separating unit to be supplied with hulls of a spent nuclear fuel subjected to a high-temperature oxidation, and to include a first brush for separating remaining powder of the hulls; a hull alignment unit to be supplied with the hulls from the first remaining powder separating unit, and to align the hulls; a second remaining powder separating unit to be supplied with the aligned hulls from the hull alignment unit, and to include a second brush for separating remaining powder adhered on an inner peripheral surface of the hulls; and a third remaining powder separating unit to be supplied with the hulls from the second remaining powder separating unit, and to separate the remaining powder remaining on the inner/outer peripheral surface of the hulls by using air.

System and apparatus of separating remaining powder of hull

The present invention discloses a cable-driven manipulator comprising an operating unit having a drive motor, and a pulley rotated by the drive motor. An upper arm is coupled, through a joint, to one side of the operating unit. A forearm coupled, through a joint, to the other side of the upper arm by the cable. A gripper of an end effector operably coupled to the forearm, a cable compensation device is installed between the upper arm and the forearm so as to maintain constant the length of the cable that transmits the power of the operating unit to the end effector during the pivoting of the forearm. It is thus possible to prevent the variation of tensile force due to the variation of the length of the cable for operating the end effector during the pivoting of the forearm or the unintended malfunction of the end effector.

Cable-driven manipulator

A rear door system for transferring hot cell equipment into or out of a hot cell is disclosed. The rear door system of the present invention includes a rear door, which is provided to a rear wall of the hot cell so as to be movable to open or close the rear wall of the hot cell, and a vertical moving table, which is provided at a predetermined position on the lower portion of the front surface of the rear door so as to be movable upwards or downwards. The rear door system further includes a drive unit, which is provided at a predetermined position in the lower end of the rear door to move the rear door, and a stationary working table, which is disposed above the vertical moving table and is fixed in the hot cell in a horizontal orientation. The rear door system further includes a removable table, which is removably coupled at a predetermined position to the stationary working table, and a hot cell crane hook and a service area crane hook, which are respectively provided inside and outside the hot cell.

Rear door system for transferring hot cell equipment

A system applicable to a bridge transporter telescopic servomanipulator, is provided. The bridge transporter telescopic servomanipulator is used for performing operation and maintenance of process equipments in a working environment having a possibility of radiation exposure. The system can be coupled/decoupled by including a coupling device in a telescopic transfer device and a servomanipulator, and can manipulate an ascending/descending device of the servomanipulator in a remote area without direct access by a worker. The coupling/decoupling device includes a first coupling plate and a second coupling plate, the first coupling plate being provided on a lower portion of the telescopic transfer device, and the second coupling plate being provided on an upper portion of the servomanipulator. While coupling protrusions are inserted into coupling holes being formed on the first coupling plate, position and orientation between a master servomanipulator and a slave servomanipulator correspond to each other, and the servomanipulator can be coupled with the telescopic transfer device since the coupling protrusions are fixed by rotating a rotation plate being provided on the second coupling plate.

Telescopic servomanipulator coupling/decoupling apparatus

The present invention relates to a well type neutron counter containing a He-3 detector which includes at least one annular gas layer in a polyethylene moderator, which includes a body formed of a neutron moderator and having a sample cavity for inserting a sample of nuclear material therein; and an annular He-3 detector tube including at least one annular gas layer into which at least He-4 or He-3 gas or their mixture is injected and a plurality of anode rods stood in the annular gas layer with an equal spaces, wherein the He-3 detector tube is formed in an inside of the body so as to surround the sample cavity. The neutron counter has a largely reduced size, simplified structure and resultant decreased failure rate as compared to a conventional counter with a large volume.

Well type neutron counter containing an annular He-3 detector tube

Growing community of inventors

Daejeon, South Korea

Ji Sup Yoon