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US 6,647,083 B1Granted
Method and apparatus for stiffening a riser brace in nuclear reactor
AssigneeGeneral Electric Company
InventorGrant C. Jensen
Life of this patent
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AssigneeGeneral Electric Company
InventorGrant C. Jensen
Estimating the term…
A vibration mitigation clamp apparatus is provided, which is designed to stiffen a riser brace assembly in a nuclear reactor so as to increase the natural vibration frequency of the riser brace assembly. In an embodiment, the vibration mitigation clamp apparatus may include a first plate, a second plate and a wedge assembly. The vibration mitigation clamp apparatus is attached to upper and lower riser brace leaves of the riser brace assembly, at a location near a weld that attaches the leaves to a riser brace block of the riser brace assembly that is affixed to an RPV sidewall. The wedge assembly is expandable to apply forces on inside surfaces of the riser brace leaves, countering clamping forces applied to the first and second plate to fixedly secure the vibration mitigation clamp apparatus on the riser brace assembly.
A clamp apparatus stiffening a riser brace assembly fixedly attached between a riser pipe in a nuclear reactor and a wall of the reactor for stabilizing the riser pipe, the riser brace assembly composed of a riser brace block attached to the wall, an upper riser brace leaf and a lower riser brace leaf, the upper and lower riser brace leaves in spaced vertical relation from each other and attached between the riser brace block and to the riser pipe via a riser brace, the clamp apparatus comprising:
A clamp apparatus supporting a riser brace assembly fixedly attached between a riser pipe in a nuclear reactor and a wall of the reactor for stabilizing the riser pipe, the riser brace assembly having a riser brace block attached to the wall, an upper riser brace leaf and a lower riser brace leaf, the upper and lower riser brace leaves in spaced vertical relation from each other and attached between the riser brace block and to the riser pipe via a riser brace, the clamp apparatus comprising:
Dependencies are inferred from the claim text.