Korea Hydro Nuclear Power Co., Ltd.

Hee Geun Kim

Tae Young Kong

Seok Tae Kim

Woo Tae Jeong

A radiation measuring system includes a whole-body counter having upper and lower radiation detectors that are located in front of a measurement space, which has an inlet passage and is located in a housing, and that detects respective internal radiations of a measurement target and first and second internal radiations of a body region corresponding to one of a thyroid gland, a lung, a whole body, or a hypogastrium, and a processor controlling determination of an internal radioactive contamination location of the measurement target, based on a ratio of the first and second internal radiations, applying the optimal measurement mode corresponding to the ratio of the first and second internal radiations, and detecting the first and second internal radiations of a body region corresponding to the internal radioactive contamination location.

Radiation measuring system based on optimal measurement geometry and radiation measuring method using the same

Disclosed herein is a segmental ultrasonic cleaning apparatus configured to remove scales and/or sludge deposited on a tube sheet. The segmental ultrasonic cleaning apparatus includes a plurality of segment groups arranged in a ring shape on a top surface of a tube sheet along an inner wall of the steam generator, in which each of the segment groups includes an ultrasonic element segment and a guide rail support segment loosely connected to each other by metal wires through hand holes located at a lower portion of the steam generator, such that ultrasound waves radiated from an ultrasonic transducer in each of the ultrasonic element segments travels along the surface of the tube sheet, with the segment groups tightly connected in the ring shape by tightening the metal wires via wire pulleys of flange units.

Segmental ultrasonic cleaning apparatus for removing scales and sludge on top of tube sheet in heat exchanger

A method and apparatus for detecting radioactivity of a whole body is disclosed. The apparatus for detecting radioactivity of a whole body is divided into upper and lower parts, the upper and lower parts are divided into front, rear, left and right portions, respectively, a radioactivity detection unit is installed at each of the front, rear, left and right portions, radioactivity values detected by each of the radioactivity detection units are compared and analyzed such that radioactivity values detected by the radioactivity detection units positioned at upper front and rear parts are compared, radioactivity values detected by the radioactivity detection units positioned at upper left and right parts are compared, and also radioactivity values detected by the lower radioactivity detection units are compared in the same manner, thus determining whether or not the internal parts or external parts of the body of a detection target have been contaminated by radioactivity.

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Daejeon, South Korea

Hee Geun Kim