Abstract: An inspection apparatus for a penetration pipe of a nuclear reactor head comprising: a body; a probe module installed at the body and having a probe which is inserted in the penetration pipe to inspect damage of the penetration pipe; a fixing module installed along a longitudinal direction of the body and having an expanding cylinder which is inserted in the penetration pipe to support an inner diameter of the penetration pipe; and a rotating module installed in the longitudinal direction of the body and having an expanding cylinder which is inserted in the penetration pipe to support the inner diameter of the penetration pipe.

Abstract: The present invention relates to a machining, examination, and welding integral device for a nozzle, and more particularly, to a machining, examination, and welding integral device for a nozzle in which machining, examination, and welding can be made in the nozzle by one device. To this end, there is provided a machining, examination, and welding integral device for a nozzle including: a pair of caps provided to be separated from each other; a welding unit provided between the pair of caps to weld a junction part of the nozzle and a pipe; a examination unit coupled to one side of the welding unit to check whether the junction part is defective; and a machining unit coupled to the top of the welding unit to remove the surface of a welded portion of the junction part and/or process the welded portion of the junction part.

Abstract: Provided is an apparatus for inspecting a structure including a heating tube, a tube sheet supporting the heating tube, and a flow distribution baffle, which are installed in a steam generator of a nuclear power plant, and more particularly, an apparatus for visually inspecting and removing a foreign object in gaps of a bundle of heating tubes of an upper portion of a tube sheet of a secondary side of a steam generator, in which a detector is inserted into gaps of a bundle of heating tubes of an upper portion of a secondary side of a steam generator so as to inspect sludge or foreign objects, and a foreign object remover removes foreign objects when foreign objects are discovered in the gaps of the heating tubes.

Abstract: An inspecting device including a detachable probe has a link structure, and thus a subject having various diameters is tested. In addition, since various probes are changeably used in a scanner housing, ultrasonic wave testing and eddy current testing are simultaneously performed.

Abstract: An arc-shaped flexible printed circuit film-type endoscope using an imaging device with driving holes. The endoscope has an image photographing device and an object insertion device and further includes a plurality of driving holes which are formed at regular intervals in a longitudinal direction of the object insertion device, and a driving device which rotates while being sequentially inserted into the driving holes, thus moving the object insertion device. The endoscope controls movement into a small space, makes it easy to inspect a narrow heat transfer tube or gaps formed between heat transfer tubes, achieves high economic efficiency, increases the reliability of endoscopy, and increases life-span.

Abstract: An apparatus that visually inspects a state of sludge and foreign substances found between steam generator bundles positioned at an upper portion of a tube sheet of a steam generator of a nuclear power plant using a visual inspector mounted in a robot moving on an inner wall surface of the steam generator for removing the foreign substances.

Abstract: The present invention provides a non-destructive test apparatus which can be applied not only to a structure in dry conditions but also to a structure constructed under water or in a location to which it is difficult for a worker to gain access. The non-destructive test apparatus includes a support frame which is disposed adjacent to the target structure and has a vertical guide rail, and a vacuum box which moves upwards or downwards along the guide rail of the support frame. The vacuum box is attached to the target structure and creates a vacuum therein. The non-destructive test apparatus further includes a hoist which is provided on the upper end of the support frame to move the vacuum box upwards or downwards, a fastening unit which fastens the support frame and the vacuum box to the target structure, and a vacuum pump which creates a vacuum in the vacuum box.

Abstract: Disclosed herein is an arc-shaped flexible printed circuit film type endoscope using an imaging device. The endoscope includes an image photographing means and an object insertion means. The image photographing means includes a head housing to which an imaging device and an illumination means are mounted, and functions to photograph an image. The object insertion means includes an arc-shaped flexible thin foil, an insulating adhesive film, a circuit film and an insulating protective film which are layered and inserted into an interior of an object to be inspected. The object insertion means is connected at one end thereof to the image photographing means and connected at the other end to a transmission cable via a connector.

Abstract: Disclosed herein is a system for measuring the deflection of a rotating shaft in a wireless manner. The system includes a non-contact-type angle division device, a plurality of wireless contact-type displacement sensors, a plurality of wireless transmitters, a relay, and a data reader. The non-contact-type angle division device is placed on a vertical rotating shaft and measures and transmits the angle of rotation of the rotating shaft. The wireless contact-type displacement sensors are installed on the outer circumferential surface of the rotating shaft, and measure the strain of the rotating shaft. The wireless transmitters transmit data about the displacement of the rotating shaft measured by the wireless contact-type displacement sensor. The relay receives and relays transmission signals from the non-contact-type angle division device and the wireless transmitters. The data reader receives the transmission signals from the relay, and performs simulation reading.

Abstract: A system for cleaning and inspecting stud bolt holes, and managing damage histories of the stud bolt holes is disclosed. The system allows an operator to clean stud bolt holes to inspect the stud bolt holes with the naked eye, and manage damage histories of the stud bolt holes. The stud bolt holes fix a nuclear reactor, a nuclear reactor coolant pump head and a pressure vessel main body thereto.

Abstract: A plasma treatment apparatus for forming a thin film on a substrate in a vacuum vessel includes a magnetic field generator which can be positioned inside or outside the vacuum vessel, and a microwave source. The magnetic field strength is controllable such that an electron cyclotron resonance (ECR) area is defined near the substrate. The magnetic field generator can be arranged so that plasma and reactive gas introduction ports are on the microwave introduction side of the ECR area and the substrate is on the opposite side of the ECR area. Alternatively, a gas introduction port can be positioned such that reactive gas is introduced into the ECR area or onto the substrate.

Abstract: An industrial compact synchrotron radiation source includes, for the purpose of prolonging lifetime of a charged particle beam, beam absorbers made of a material having a low photodesorption yield and disposed inside a bending section/vacuum chamber at at least positions upon which the synchrotron radiation is irradiated, and electrically conductive beam stabilizers disposed at positions inside the bending section/vacuum chamber which are distant by a predetermined distance from an orbit of the charged particle beam toward the outer circumferential wall of the bending section/vacuum chamber.

Abstract: An industrial compact synchrotron radiation source includes, for the purpose of prolonging lifetime of a charged particle beam, beam absorbers made of a material having a low photodesorption yield and disposed inside a bending section/vacuum chamber at at least positions upon which the synchrotron radiation is irradiated, and electrically conductive beam stabilizers disposed at positions inside the bending section/vacuum chamber which are distant by a predetermined distance from an orbit of the charged particle beam toward the outer circumferential wall of the bending section/vacuum chamber.

Abstract: A plasma operation apparatus utilizes plasma generated by a microwave cooperative with a magnetic field as to perform a surface operation on a specimen such as semiconductor substrates, such as, for example, thin film deposition, etching, sputtering and plasma oxidation. The apparatus particularly takes advantage of electron cyclotron resonance and is suitable for performing highly efficient and high-quality plasma operations.

Abstract: A device for removing a cladding material from a bottom portion of a control rod guide tube of a nuclear reactor. A rotor tube is removably mounted in a housing of a control rod drive of the nuclear reactor and has at least its forward end portion hydraulically insertable into the bottom portion of the control rod guide tube through an opening located in a lower portion of the control rod guide tube for inserting the control rod drive. The rotor tube is provided at the forward end portion thereof with a foldable rotary brush and cleaning water supply nozzles. A rotary drive shaft is extending through the rotor tube for rotating the rotary brush. The cladding material deposited on the bottom portion of the control rod guide tube that has become radioactive can be readily and positively removed therefrom with a small volume of water while enabling the risk of exposure to radiation to be minimized at a time the operation of cleaning the bottom portion of the control rod guide tube is performed.

Abstract: A diagnostic apparatus for diagnosising of a valve device in a turbine system comprises at least one of a pressure sensor for sensing hydraulic pressure in a hydraulic cylinder for driving a valve body of the valve device and a position sensor for sensing the displacement of the valve body, and a processing device for processing the output signal from the above-mentioned at least one sensor. The processing device has an offset computing device which receives a signal representing the actual operating state of the valve device obtained on the basis of the output signal from the at least one sensor and a signal corresponding to a reference value obtained under the normal operating state of the valve device. The offset computing device is operable to compute the offset between the signals received thereto. A judging device is provided for judging as to whether or not there is a symptom of a sticking in the valve device, in accordance with the output signal from the offset computing device.

Abstract: For rotating the runner of a fluid machine in compressed air atmosphere in the runner chamber after shutting off working water and feeding compressed air to the runner chamber to move the liquid level therein downwardly below the runner while discharging water remaining in the outer peripheral portion of the runner through a leak-water exhaust pipe following starting of pump-operation, an inlet valve opening detector is mounted and operatively connected to a leak-water exhaust valve controller for controlling a leak-water exhaust valve. Stable operation of the fluid machine in spinning-in-air mode can be achieved by opening the leak-water exhaust valve by means of the leak-water exhaust valve controller following lapse of a given period of time after the inlet valve is fully closed, to permit the water remaining in the outer peripheral portion of the runner to be discharged through the leak-water exhaust pipe.