Abstract: A tool for inspecting a cell formed by grid beams of a top guide structure in a nuclear reactor is provided. The tool includes a camera; a support structure coupled to the camera for contacting at least one of the grid beams to support the camera within the cell; and at least one actuator moving the camera with respect to the support structure and along one of the grid beams, the at least one actuator coupling the camera to the support structure. A method for inspecting a cell formed by grid beams of a top guide structure in a nuclear reactor is also provided.

Abstract: A tool for inspecting a cell formed by grid beams of a top guide structure in a nuclear reactor is provided. The tool includes a camera; a support structure coupled to the camera for contacting at least one of the grid beams to support the camera within the cell; and at least one actuator moving the camera with respect to the support structure and along one of the grid beams, the at least one actuator coupling the camera to the support structure. A method for inspecting a cell formed by grid beams of a top guide structure in a nuclear reactor is also provided.

Abstract: A remotely installed, operated and removed manipulator for steam generator includes a mast, an articulating arm attached to the mast, capable of operating in the bottom or top head of a once through steam generator or the head of a recirculating steam generator. Each embodiment can be remotely installed and removed. The manipulator provides precise access to tubes and can sustain substantial loads, so the apparatus can perform much of the tube work that must be performed inside a steam generator.

Abstract: A lance assembly designed to clean sludge from the portion of the OTSG tube bundle which is inaccessible from the open tube lane. A track assembled between the OTSG outer shell and circular shroud around the tube bundle substantially opposite the open tube lane has a motorized carriage driven on the track which directs high pressure fluid through a plurality of nozzles toward the tube bundle through windows in the circular shroud. The nozzles are attached to a nozzle block which is capable of being moved vertically on the carriage to vary the flow impact area on the tube bundle.

Abstract: A sludge lance wand for cleaning once through steam generator tubes. A curved high pressure fluid feed tube has a plurality of feed tube extensions attached at one end and a first nozzle brace attached at the other end and in fluid communication with the feed tube. A second nozzle brace bolted to the first nozzle brace retains nozzle blocks in position between the two braces. The nozzle blocks are in fluid communication with the first nozzle brace and are provided with nozzle openings angled for cleaning the triangular-pitch positioned tubes in a once through steam generator. O-ring seals on each end of the nozzle blocks press fit against the braces to prevent leakage and insure that full fluid flow is directed through the nozzle openings.

Abstract: A metered film of a fluid coating composition (10) having solids suspended therein, such as a fluid composition containing rupturable microcapsules, is formed on a doctored gravure supply roll (12) and applied to a soft rubber applicator roll (20). The supply roll (12) transfers the metered coating composition (10) to an endless web (25) which is wrapped and tensioned therearound in substantially uncompressed contact, to transfer the metered coating composition uniformly and evenly to the web (25) without shearing the composition (10) when on the web (25) or mechanically pressing the solids therein into the web (25).

Abstract: A movable framework retains an edge guide apparatus preferably in the form of a slanted rotary member or members, for determining a reference position relative to the edge of a previous tier of roofing shingles. The framework has a chute attached thereto for directing shingles into position with a second guide edge attached to the framework to determine the correct stop position of the shingles relative to the rotary guide. A plurality of fastening devices are pivotally attached to the framework in correct spacing and an actuating handle arranged to pivot these fastening devices in tandem into their proper positions relative to a shingle contained within the chute. The basic framework can accommodate a storage rack for shingles to be used and can be wheel-mounted for ease of movement. Further, the apparatus can be easily arranged to be self-contained by including a storage tank for operating pneumatically actuated fastening devices.