DISPOSITIF DE POSE ET D'EXTRACTION COMMANDE A DISTANCE D'UN BOUCHON D'OBTURATION D'UN TUBE DE GENERATEUR DE VAPEUR

    公开(公告)号:FR2621998A1

    公开(公告)日:1989-04-21

    申请号:FR8714326

    申请日:1987-10-16

    Abstract: Le dispositif comporte un moyen de manutention 21 connu en lui-même disposé à l'intérieur de la boîte à eau du générateur de vapeur et permettant de placer l'ensemble de pose et d'extraction de bouchon 22 dans l'alignement des tubes du faisceau du générateur de vapeur. Le dispositif comporte de plus un moyen de déplacement 35 dans la direction axiale des tubes fixé sur le moyen de manutention 21, un support 44 fixé sur le moyen de déplacement 35, mobile dans la direction axiale, un organe de liaison 51 porté par le support 44 ayant des moyens de fixation amovible au corps du bouchon, et une tige coulissante 55 actionnée par un vérin solidaire du support 44. Le dispositif comporte également un moyen 40 d'amenée et d'évacuation des bouchons. La tige 55 actionnée par le vérin permet en particulier d'exercer une poussée sur le bouchon maintenu par l'organe de liaison 51, pour réaliser son extension et faciliter son extraction.

    Method and device for dismantling an irradiated component of nuclear reactor by cutting its wall

    公开(公告)号:FR2668848A2

    公开(公告)日:1992-05-07

    申请号:FR9013816

    申请日:1990-11-07

    Applicant: FRAMATOME SA

    Abstract: The component (1) is moved in successive steps in the vertical direction, to allow cutting of an upper part (16) of the component (1), inside the cavity (pool) (4) of the reactor. First initial raising of the component (1) is carried out by exerting a thrust on the lower part (1a) of the component (1). A first modular support element (33) is introduced between the lower part of the component (1) and a fixed support (27). The component (1) is rested on the first modular support element (33). For each of the subsequent successive steps of moving the component (1), unitary lifting of the component (1) is carried out over a defined vertical distance, using second lifting means (32) bearing on the support (27). A modular support element (33, 33', 33'') is introduced between the modular element (32) by which the lifting is carried out and the fixed support (27). The component (1) is made to bear on the fixed support (27) by means of the superimposed modular elements (33, 33').

    6.
    发明专利
    未知

    公开(公告)号:FR2673033A1

    公开(公告)日:1992-08-21

    申请号:FR9101957

    申请日:1991-02-19

    Applicant: FRAMATOME SA

    Abstract: The disassembly and/or the cutting up of each of the components (6) of the internal equipment fastened in the vessel (4) is carried out under water, inside the reactor vessel (4). Metal components (12) separated from the vessel (4) are obtained and are withdrawn successively from the vessel and then compacted under water in a compacting press. The metal components (36) obtained after compacting are deposited under water in a storage and transport container (37). The dismantling device comprises in particular a handling and cutting unit (11) which makes it possible to perform the cutting up of cylindrical sections of the reactor core enclosure (6) and the transporting of the sections (12) into the compacting press (34).

    DEVICE FOR FITTING AN EXTRACTION SLEEVE INTO A STEAM GENERATOR TUBE AND CORRESPONDING PROCESS FOR THE EXTRACTION OF A TUBE PORTION

    公开(公告)号:ZA897812B

    公开(公告)日:1991-05-29

    申请号:ZA897812

    申请日:1989-10-16

    Applicant: FRAMATOME SA

    Abstract: The insertion device comprises a guide collar (75) provided at one of its ends with means (77) for connection to corresponding means (87) arranged at a first end of an extraction sleeve tube (85), a retention collar (100) provided at one of its ends with detachable means for connection to corresponding means arranged at the second end of the extraction sleeve tube (85) and means for fastening the retention collar (100) to the entrance face (3a) of the tubular plate (3). The device also comprises means for positioning the extraction sleeve tube (85) and for positioning and controlling and extracting a syringe for injecting glue comprising an operating member (17) and an elongated transmission element (18) connected at one of its ends to the injection syringe and at its other end to the operating member (17). The extraction sleeve tube (85) can be connected to the guide collar (75) and to the retention collar (100) in order to be positioned inside the tube (5) which is being extracted. The syringe for injecting glue is arranged inside the sleeve tube (85) and controlled manually via the operating member (17) and the flexible transmission element (18). The invention also relates to a method for extracting a portion of a generator tube at a distance from the ends of the tube. … …

    Method and device for dismantling an irradiated component of a nuclear reactor by cutting up its wall

    公开(公告)号:FR2664083A1

    公开(公告)日:1992-01-03

    申请号:FR9008117

    申请日:1990-06-27

    Applicant: FRAMATOME SA

    Inventor: PAUL JACQUIER

    Abstract: The irradiated component (1) includes at least one wall of tubular shape arranged with its axis in the vertical direction and fastened inside a pit (2) made in a concrete structure (3). The linkage elements between the concrete structure (3) and the component (1) are removed, the component (1) is moved in successive stages in the vertical direction along its axis, inside the pit (2), the wall of the component is cut up so as to obtain blocks (26) of irradiated material from the wall of the component (1), at the upper level of the pit (2) of the concrete structure (3), after each movement of the component (1). The cut-up blocks (26) are taken away in order to be disposed of or stored.

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