Korea Hydro Nuclear Power Co., Ltd.

Korea Electric Power Corporation

Hee Jong Lee

Byung Sik Yoon

Yong Sik Kim

Min Nam

Se Kyoung Kim

Sung Nam Choi

Seung Han Yang

The present disclosure relates to an automatic inspection apparatus for generator turbines and a system using the same. The automatic inspection apparatus adjusts the height of an arm via a lifter, adjusts a rotating angle relative to an inspection object via a rotator, and adjusts forward or backward movement of a probe relative to the inspection object via an expansion/contraction unit while moving the arm having the probe on a rail in accordance with positions of a turbine to be inspected. Furthermore, a compression unit may be used to control contact pressure of the probe to the inspection object at a desired level to allow the probe to closely contact the inspection object, thereby preventing disturbance due to vibration of the probe. In addition, the automatic inspection apparatus has a simple and lightweight configuration so as to be easily installed or removed in a work site.

Automatic inspection apparatus for generator turbine and system using the same

Disclosed is an underwater CCD camera for visual testing of a reactor cooling system. The underwater CCD camera includes a CCD camera, a casing having a supporter supporting the CCD camera and a cooling pin on a top surface thereof, a Pb-glass window on a front side of the easing to shield the CCD camera from radiation and to reduce a temperature difference between the interior and exterior of the casing, a sealing O-ring preventing a coolant from being introduced into a gap between the Pb-glass window and the casing, a sealing nut providing a fastening force to bring the Pb-glass window into close contact with the sealing O-ring, a rear cap, a silicon O-ring preventing the coolant from being introduced into a gap between the rear cap and the casing, and a fastening nut providing a fastening force to prevent leakage between a camera cable and the casing.

Underwater CCD camera for visual testing of reactor cooling system

In a nondestructive testing apparatus for testing normality of a blade root in a steam turbine installed in a nuclear plant or a thermal plant, an ultrasonic probe and an encoder can be mounted at the outside by only removing a casing of the steam turbine, without the necessity of withdrawing a turbine rotor, so that an automatic testing can be performed by rotating the steam turbine. Since the testing result can be digitally stored, reliability of the testing is improved. Furthermore, size of the testing apparatus is highly reduced for a tester to conveniently carry and install the testing apparatus alone. As a result, installation time and the whole testing time can be minimized.

Nondestructive testing apparatus for blade root of steam turbine of power plant

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Daejeon, South Korea

Hee Jong Lee