Inspection tool

A reciprocation apparatus that is structured to be mounted to a tool which is receivable into an interior region of a core shroud of a boiling water reactor, the reciprocation apparatus further being structured to carry a device thereon into the interior region, the reciprocation apparatus comprising:

• a platform that is structured to be situated on the tool and that has a first side and a second side opposite one another;
• a support that is elongated and that is situated on the platform, the support having a first end and a second end opposite one another, the support being movable along its direction of elongation with respect to the platform in a first direction wherein the first end moves relatively farther away from the first side, the support further being movable in a second direction opposite the first direction wherein the second end moves relatively farther away from the second side;
• a belt that is elongated and flexible, the belt being affixed at one or more locations along its length to the platform to form a closed loop that extends about at least a portion of the support and that permits relative movement between the belt and the at least portion of the support when the support moves in the first and second directions;
• a mount that is situated on the belt and that is structured to carry the device;
• a drive mechanism operationally extending between the support and one of the platform
• and the belt, the drive mechanism being operable to move the reciprocation apparatus between a first state of the reciprocation apparatus and a second state of the reciprocation apparatus;
• in the first state, a relatively greater portion of the support extends from the first side than extends from the second side, and the mount is situated relatively closer to the first end than the second end;
• and
• in the second state, a relatively greater portion of the support extends from the second side than extends from the first side, and the mount is situated relatively closer to the second end than the first end.