Abstract: A system for the remote visual inspection of a structure including two vessels, one disposed within the otherand defining an annulus therebetween. A guide member is provided circumferentially about an upper periphery of the two vessels. Mounted on the guide member are two motor-driven, diametrically opposed trolleys which support a flexible track member which extends downwardly through the annulus from one of the trolleys and back up the other side of the annulus to the other trolley. At least one motor-driven carrige is mounted on the track member and carries a camera and light source. By appropriate positioning of the trolleys and the carriage, all the surfaces of the vessels defining the annulus are accessible for visual inspection by the camera. In accordance with a particular preferred embodiment, markers are placed at preselected points in the annulus on one of the vessels to permit verification of the location of the camera and carriage.

Abstract: A cable handling system for use in an installation such as a nuclear reactor is disclosed herein along with relevant portions of the reactor which, in a preferred embodiment, is a liquid metal fast breeder reactor. The cable handling system provides a specific way of interconnecting certain internal reactor components with certain external components, through an assembly of rotatable plugs. Moreover, this is done without having to disconnect these components from one another during rotation of the plugs and yet without interfering with other reactor components in the vicinity of the rotating plugs and cable handling system.