Abrégé

A management equipment transfer apparatus which transfers management equipment, which tests and maintains an inside of a nuclear reactor vessel, inside the nuclear reactor vessel while being locked to the management equipment and the nuclear reactor vessel, includes: a cross beam configured to be lengthily disposed inside the nuclear reactor vessel in a transverse direction; a rod configured to be connected to a cross beam lengthily disposed inside the nuclear reactor vessel in a longitudinal direction; a bracket configured to be mounted in the rod to fix the management equipment; an arm configured to extend toward an inner peripheral surface of the nuclear reactor vessel and be connected to the cross beam; and rolling parts configured to be disposed at ends of the arm and the cross beam, contact the inner peripheral surface of the nuclear reactor vessel, and rotatably support the cross beam and the arm.

Classes IPC  ?

• G21C 17/013 - Véhicules d'inspection
• G21C 19/20 - Dispositions pour introduire des objets à l'intérieur de l'enceinte sous pressionDispositions pour manipuler des objets à l'intérieur de l'enceinte sous pressionDispositions pour extraire des objets de l'enceinte sous pression
• G21C 19/02 - Détails des dispositions pour la manipulation
• G21C 17/01 - Inspection des surfaces internes des enceintes
• G21C 17/00 - SurveillanceTests

Abrégé

Provided herein is a remote inspection apparatus for a heating tube of a steam generator, the apparatus including a fixing unit installed in a flange surface of a hand hole of the steam generator in a fixed manner, and having one or more rail guiders for guiding a guide rail into the steam generator; the guide rail configured to be guided by the rail guider to enter between the heating tube and a divider plate inside the steam generator; a rail driving unit fitted at one end of the guide rail and arranged outside the steam generator, and having a bobbin around which a steel belt is wound; and a probe feeding unit configured to receive a driving force from the rail driving unit through the steel belt to be moved along the guide rail, and having a band shaped probe extending in a length direction and an inspection camera fitted at one end of the probe.

Classes IPC  ?

• H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé
• H04N 5/225 - Caméras de télévision
• F22B 37/00 - Détails ou parties constitutives des chaudières à vapeur
• G01N 21/954 - Inspection de la surface intérieure de corps creux, p. ex. d'alésages
• F27D 21/02 - Dispositifs d'observation ou d'éclairage

Abrégé

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.

Classes IPC  ?

• G21C 17/013 - Véhicules d'inspection
• G21C 17/017 - Inspection ou maintenance de tuyaux ou de tubes dans des installations nucléaires
• G21C 17/00 - SurveillanceTests
• G21C 17/007 - Inspection des surfaces externes des enceintes
• G21C 13/036 - Raccords entre le tube et la paroi d'une enceinte, p. ex. tenant compte des contraintes thermiques le tube traversant la paroi, c.-à-d. s'étendant de chaque côté

Abrégé

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.

Classes IPC  ?

• B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage
• B23K 31/00 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux
• B23P 23/00 - Machines ou agencements de machines réalisant des combinaisons déterminées de différentes opérations d'usinage, non couverts par une seule autre sous-classe
• G21C 17/017 - Inspection ou maintenance de tuyaux ou de tubes dans des installations nucléaires
• G21C 19/20 - Dispositions pour introduire des objets à l'intérieur de l'enceinte sous pressionDispositions pour manipuler des objets à l'intérieur de l'enceinte sous pressionDispositions pour extraire des objets de l'enceinte sous pression
• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• G21C 19/14 - Dispositions pour le traitement, pour la manipulation, ou pour faciliter la manipulation, du combustible ou d'autres matériaux utilisés à l'intérieur du réacteur, p. ex. à l'intérieur de l'enceinte sous pression caractérisés par leur adaptation pour emploi avec des canaux horizontaux dans le cœur du réacteur
• B23K 37/02 - Chariots pour supporter l'outillage pour souder ou découper
• F16L 55/18 - Accessoires de réparation des tuyaux

Abrégé

Provided is a plug dismounting apparatus for a heavy water reactor fuel system. The plug dismounting apparatus for dismounting a plug (10) that is mounted on a fuel element in a heavy water reactor fuel system, and includes a locking rim (11) formed along an inner circumference thereof and a push pipe (12), includes: a clamp housing (100) made up of an outer housing (110) having a plurality of ball holes (111) formed in a radial direction and inserted into an inner diametrical region of the plug (10) and an inner housing (120) having a stem bush (121); locking balls (200) coupled to the ball holes (111) of the outer housing (110), and locked on the locking rim (11) so as to fix the clamp housing (100) to the plug (10); a guide liner (300) having a release groove (310) formed so as to guide release of the locking balls (200), and coupled so as to guide sliding of the inner and outer housings (120 and 110); elastic members (400) interposed between the guide liner (300) and the clamp housing (100), and restoring the released locking balls (200) so as to be elastically locked; a latch ram (500) coupled so as to slide into an inner diametrical region of the inner housing (120), and pressurizing an inner surface of the plug (10); a hollow main stem (600) screwed to the stem bush (121) of the inner housing (120) so as to slide the latch ram (500); and a sub-stem (700) coupled to an inner diametrical region of the main stem (600) and pressurizing the push pipe (12) so as to dismount the plug (10).

Classes IPC  ?

• G21C 13/06 - Bouchons scellés
• G21C 19/115 - Dispositifs de relèvement ou d'enlèvement adaptés pour coopérer avec les éléments combustibles ou avec l'élément de commande à dispositifs de verrouillage et couplages à billes

Abrégé

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.

Classes IPC  ?

• A61B 1/00 - Instruments pour procéder à l'examen médical de l'intérieur des cavités ou des conduits du corps par inspection visuelle ou photographique, p. ex. endoscopesDispositions pour l'éclairage dans ces instruments

Abrégé

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.

Classes IPC  ?

• G01N 29/24 - Sondes
• G01N 29/265 - Dispositions pour l'orientation ou le balayage en déplaçant le capteur par rapport à un matériau fixe

Abrégé

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.

Classes IPC  ?

• F28G 15/00 - NETTOYAGE DES SURFACES INTERNES OU EXTERNES DES CONDUITS DES ÉCHANGEURS DE CHALEUR OU DE TRANSFERT DE CHALEUR, p. ex. TUBES D'EAU DE CHAUDIÈRES Parties constitutives
• F28G 15/02 - Supports pour accessoires de nettoyage, p. ex. les châssis
• F28G 15/04 - Dispositions pour l'alimentation ou l'entraînement, p. ex. par force motrice
• F22B 37/00 - Détails ou parties constitutives des chaudières à vapeur

Abrégé

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.

Classes IPC  ?

• G01N 3/32 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts répétés ou pulsatoires

Abrégé

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. The non-destructive test apparatus further includes a defect detecting unit which measures a strength of vacuum in the vacuum box to determine whether the target structure is defective, and a control unit which controls the elements.

Classes IPC  ?

• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

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.

Classes IPC  ?

• A61B 1/04 - Instruments pour procéder à l'examen médical de l'intérieur des cavités ou des conduits du corps par inspection visuelle ou photographique, p. ex. endoscopesDispositions pour l'éclairage dans ces instruments combinés avec des dispositifs photographiques ou de télévision

Abrégé

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.

Classes IPC  ?

• F22B 37/48 - Dispositifs ou agencements pour enlever l'eau, les minéraux ou les boues des chaudières
• B08B 7/00 - Nettoyage par des procédés non prévus dans une seule autre sous-classe ou un seul groupe de la présente sous-classe

Abrégé

An upper bundle cleaning system of steam generator is disclosed which can clean heat transfer tubes and a plurality of tube support plates that support the heat transfer tubes and have slots, using a cleaning device transferred along a guide rail installed to an upper hand hole of the steam generator. The cleaning device is installed to an ascending/descending mechanism which is vertically transferable. The cleaning device includes a frame, at least one or more guide component, a spray component, and a hinge unit, such that the cleaning device is ascended and descended by the ascending/descending mechanism to clean the heat transfer tubes and the tube support plates.

Classes IPC  ?

• F28G 1/00 - Accessoires non rotatifs, p. ex. alternatifs
• F28G 15/00 - NETTOYAGE DES SURFACES INTERNES OU EXTERNES DES CONDUITS DES ÉCHANGEURS DE CHALEUR OU DE TRANSFERT DE CHALEUR, p. ex. TUBES D'EAU DE CHAUDIÈRES Parties constitutives

Abrégé

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.

Classes IPC  ?

• A47L 5/38 - Installations de nettoyage par aspiration incorporées, c.-à-d. système à tube fixe auquel un tuyau souple peut être raccordé en différents points
• A47L 5/00 - Caractéristiques de structures des aspirateurs