Kepco Engineering & Construction Company, Inc.

Sang Gyoon Chang

Dae Hee Lee

Myoung Goo Lee

Jin Seok Park

Yong Tae Jang

Hyun Woo Park

Min Gyu Kim

Yeon Ho Cho

Won Lee

Ho Jung Lee

Kwang Jeok Ko

Sung Jun Kim

Tae Kyo Kang

Young Ju Kwon

Il Seon Hwang

Jong Sang Won

A magnetic jack type in-vessel control element drive mechanism includes: an upper coil assembly which includes a first sleeve configured to coaxially wrap a control element drive shaft, a first coil, and a first coil housing which is externally coupled to the first sleeve; a lower coil assembly which includes a second sleeve configured to coaxially wrap the control element drive shaft, a second coil, and a second coil housing which is externally coupled to the second sleeve, wherein the lower coil assembly is located under the upper coil assembly, a connecting member which connects the upper coil assembly and the lower coil assembly; a support tube which extends downward from the lower coil assembly; a motor assembly which is located between the control element drive shaft, and the first and second sleeves; and an anti-separation cap which prevents separation of the motor assembly.

Magnetic jack type in-vessel control element drive mechanism

A sealing mechanism for a reactor vessel (RV) cable penetration tube improves the functional and structural integrity of a cable inserted in an RV through a penetration tube due to use of a precise thimble. The sealing mechanism includes a penetration tube configured to penetrate an RV from an outside to an inside thereof and having a penetration hole for communication with the inside of the RV, a cable configured to be inserted in the RV through the penetration hole of the penetration tube, and a thimble placed between the cable and the penetration tube, wherein a dimple groove portion is provided on the thimble in a direction from an outer surface of the penetration hole toward the cable.

Sealing mechanism for a nuclear reactor vessel cable penetration tube

Provided is a device for transferring spent fuel between spent fuel storage pools. The device includes a transfer container extending in a direction, disposed in a vertical direction, and containing spent fuel therein; a guide frame configured to guide the transfer container while maintaining a vertical orientation of the transfer container; and a transfer unit configured to transfer the transfer container along the guide frame.

Spent fuel transfer device for transferring spent fuel between storage pools

An anti-seismic apparatus for control element drive mechanisms of a nuclear reactor includes: an anti-seismic support plate including a plurality of insertion holes in which the control element drive mechanisms are respectively inserted; and bushings inserted between outer surfaces of the control element drive mechanisms and inner surfaces of the insertion holes. The support plate includes an upper support plate comprising a plurality of first insertion holes, a lower support plate comprising a plurality of second insertion holes at positions corresponding to the first insertion holes, and a connection part connecting the upper support plate and the lower support plate. The connection part includes a support beam vertically extending from an end portion of the lower support plate, an inner flange extending inward from an upper end portion of the support beam, and an outer flange extending outward from the upper end portion of the support beam.

Anti-seismic apparatus for control element drive mechanisms

A magnetic jack type control element drive mechanism for precision position control of a control element assembly, satisfies the following conditions:1=2=5;3=&#xd7;2;4=3&#xd7;(&#x2212;&#xbd;), (is an arbitrary natural number),

Magnetic jack type control element drive mechanism for precision position control of control element assembly

Growing community of inventors

Daejeon, South Korea

Sang Gyoon Chang