The invention relates to a device for sealed transfer between two enclosed volumes, comprising a first flange and a second flange (10) which define a passage opening into the enclosed volumes and can be secured to each other by a first bayonet connection, a first door and a second door (11) which close off the passage openings and can be secured to each other by a second bayonet connection, the first door (11) being hingedly mounted on the first flange (10) by means of a hinge (4) comprising a hinge pin, characterized in that the device comprises an external manual control lever (9) which is secured to a rotary pin penetrating the first flange (10) and which is coupled to the hinge pin in such a way that the actuation of the control lever (9) drives the hinge pin, thus opening or closing the first door (11).

A radiation shielding structure or vault includes an outer wall and an inner wall. The outer wall includes at least one outer wall panel formed into a cylinder shape having an outer wall opening. The inner wall includes at least one inner wall panel formed into a cylinder shape having an inner wall opening aligned with the outer wall opening. Tie rods secure the inner wall to the outer wall to support and hold the spacing between the walls. A tunnel structure is inside the inner wall opening and the outer wall opening. A radiation shielding door is coupled to the tunnel structure. A radiation shielding filler material is disposed in between the outer wall and the inner wall.

A radiation shielding structure or vault includes an outer wall and an inner wall. The outer wall includes at least one outer wall panel formed into a cylinder shape having an outer wall opening. The inner wall includes at least one inner wall panel formed into a cylinder shape having an inner wall opening aligned with the outer wall opening. Tie rods secure the inner wall to the outer wall to support and hold the spacing between the walls. A tunnel structure is inside the inner wall opening and the outer wall opening. A radiation shielding door is coupled to the tunnel structure. A radiation shielding filler material is disposed in between the outer wall and the inner wall.

There is disclosed a containment system for a nuclear plant, the containment system comprising a pressure vessel defining a containment space for containing nuclear plant structures, a working floor extending from within the containment space to outside the pressure vessel, an access opening in the pressure vessel for providing access from the working floor outside the pressure vessel to the working floor in the containment space, and an access door provided within the pressure vessel. The access door is configured to slidably move downwardly with respect to the pressure vessel from a closed position in which it closes the access opening to seal the pressure vessel, and an open position in which it reveals the access opening and is received in a door space in the working floor. The access door comprises a first integral floor plug which is configured to plug the door space in the working floor when the access door is in the open position, to provide a substantially continuous working floor surface from outside the pressure vessel to within the containment space.

There is disclosed a containment system for a nuclear plant, the containment system comprising a pressure vessel defining a containment space for containing nuclear plant structures, a working floor extending from within the containment space to outside the pressure vessel, an access opening in the pressure vessel for providing access from the working floor outside the pressure vessel to the working floor in the containment space, and an access door provided within the pressure vessel. The access door is configured to slidably move downwardly with respect to the pressure vessel from a closed position in which it closes the access opening to seal the pressure vessel, and an open position in which it reveals the access opening and is received in a door space in the working floor. The access door comprises a first integral floor plug which is configured to plug the door space in the working floor when the access door is in the open position, to provide a substantially continuous working floor surface from outside the pressure vessel to within the containment space.

The invention relates to a sealed container (1) comprising a flexible film (2) which is arranged to define an internal space (3) and a through-opening, and a sealed connection device (4) which is arranged to allow the flexible film (2) to be connected to a complementary connection device of a sterile enclosure, while ensuring sterile communication between the internal space (3) of the container (1) and that of the enclosure, the connection device (4) comprising a flange to which the flexible film (2) is attached, the flange delimiting the through-opening of the flexible film (2), characterized in that the flange is constituted by two different pieces distinct from each other, respectively forming an external sleeve (5) and an internal sleeve (6) the flexible film (2) being kept gripped between the external sleeve (5) and the internal sleeve (6).

The invention relates to a device for a sealed connection between two doors (2, 5) which are each provided with a coaxial complementary flange (3, 7), one of the doors (5) and the flange (3) of the other door (2) being provided with at least one peripheral seal (1, 4), wherein each of the peripheral seals (1, 4) comprises an annular seal body extended in the outer peripheral portion thereof by an annular bead (11, 41), and wherein the door and the flange having the seals comprise a tubular bearing surface (34, 54) that is complementary to the outer peripheral face (11, 44) of the seal body on the one hand and a circular groove for engagement with the bead on the other hand.

The invention relates to a sealed transfer device between two enclosed volumes, comprising two flanges (10, 20) that can be secured to each other by a first bayonet connection, two doors (11, 21) which close off the passage openings defined by the flanges and can be secured to each other by a second bayonet connection, and a control mechanism comprising a control member (3) that is movably mounted on the first flange (10) between a closed position and an open position of the doors (11, 21), characterized in that the control mechanism comprises a member (7) for locking the second door (21) to the first door (11), ensuring that the doors are locked together when the control member (3) switches into the open position of the first and second doors, said locking member (7) being integrated into the first door (11).

The invention relates to a sealed container (1) comprising a container body (2) having a through-hole (8) that is delimited by a flange and is closed by a removable door (7) mounted on the flange, an annular seal (13) located between the flange and the door (7), the flange, the door (7) and the seal forming a sealed connection device that can be connected to a complementary connection device on a sterile enclosure by means of bayonet connection means in order to allow sterile communication between the sealed container and the sterile enclosure, characterized in that the seal (13) comprises, on its inner peripheral circumference, an annular attachment bead (130) for attaching the door (7) to the flange inserted into a notch (70) on the door (7).

According to one embodiment, a particle beam therapy system comprising: a circular accelerator configured to accelerate charged particles; a beam transportation line configured to lead the charged particles accelerated by the circular accelerator to an irradiation room; a shielding wall that is disposed around a radiation controlled area and shields radiation to be generated from the circular accelerator and the beam transportation line, the radiation controlled area being an area where the circular accelerator and the beam transportation line are disposed; a specific portion that is provided at a position that separates the radiation controlled area from outside of the shielding wall and can form an additional opening portion of the irradiation room; and a blocking portion configured to close the specific portion and shield radiation passing through the specific portion.