Kepco Engineering & Construction Company, Inc.

Knu-industry Cooperation Foundation

Yong Tae Jang

Jin Seok Park

Myoung Goo Lee

Dae Hee Lee

Sang Gyoon Chang

Yeon Ho Cho

Won Lee

In Bae Chang

Cheol Soo Maeng

Chang Kyu Chung

Sang Gyoon Jang

Provided is an installation structure for installing control rod drive mechanisms and cable sealing units in a nuclear reactor pressure vessel. The installation structure includes: a sealing flange having a ring shape and being hermetically coupled to an upper pressure vessel and a lower pressure vessel of the nuclear reactor pressure vessel; a cylindrical tube extending downward vertically from an internal edge of the sealing flange; and a support plate provided horizontally to block a lower end portion of the cylindrical tube. A plurality of mounting holes that penetrate through the sealing flange horizontally are arranged in the sealing flange with a predetermined interval therebetween along a circumferential direction, the cable sealing units are inserted and mounted in the plurality of mounting holes, and the control rod drive mechanisms are installed on the support plate to be supported.

Installation structure for installing control rod drive mechanism and cable sealing unit in nuclear reactor pressure vessel

An apparatus for detecting a position of a control rod includes a control rod driving shaft having an outer circumferential surface on which position information is marked, a mirror configured to reflect the position information, and a detector configured to detect a position of the control rod driving shaft from the position information reflected from the mirror, when the control rod driving shaft moves vertically.

Apparatus for detecting position of control rod

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 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

Yong Tae Jang