Abstract: A nuclear reactor pressure vessel assembly includes a part in a reactor housing structure. The part includes a body a vibration absorber. The body includes an internal surface. The internal surface of the body defines at least one cavity that is not exposed to an environment external to the body. The vibration absorber includes at least one of a harmonic oscillator connected to the internal surface of the body or an external surface of the body, a shear multiplier in the at least one cavity, a hybrid mass-viscoelastic structure in the at least one cavity and not secured to the internal surface of the body, and a distributed damping structure incorporated into the body.

Abstract: A method and apparatus for applying a lateral restraining force to a diffuser or an inlet mixer of a Boiling Water Reactor (BWR) jet pump restrainer assembly, to pull the diffuser or inlet mixer toward a centerline of a riser pipe. The lateral restraining force may be applied to just a diffuser, or just an inlet mixer, or both. Clamps are attached to the diffuser or inlet mixer, and alternatively to the riser pipe, and draw bolts are connected to the clamps to provide the necessary restraining force. The lateral restraining force either mitigates damage and repair to a conventional jet pump restrainer assembly, or alternatively is used in lieu of a jet pump restrainer assembly.

Abstract: Example embodiment damping devices may include a housing capturing a piston. The housing may be filled and/or able to be filled with a damping fluid compatible with the nuclear reactor coolant, so that a leak from the housing or coolant passing into the housing does not damage the reactor or example embodiment devices. Example embodiments may further include one or more springs that provide an elastic force opposing movement between the piston and housing. A shaft of the piston and an end of the housing may be connected to two nuclear reactor components with relative motion or vibration to be damped. Example methods may use example embodiment damping devices to reduce and/or prevent relative motion and vibration among components of a nuclear reactor.

Abstract: A vane configuration for a steam dryer according to an example embodiment of the invention may include a plurality of primary vanes arranged in a radial pattern around (and spaced apart from) a center line. Each of the plurality of primary vanes may be a primary corrugated sheet having alternating primary ridges and primary furrows. As a result, adjacent primary vanes may define a winding flow path, the flow path having an entrance and an exit relative to the center line. The cross-sectional area of the flow path may decrease, increase, or remain constant from the entrance to the exit.

Abstract: A vane configuration for a steam dryer according to an example embodiment of the invention may include a plurality of primary vanes arranged in a radial pattern around (and spaced apart from) a center line. Each of the plurality of primary vanes may be a primary corrugated sheet having alternating primary ridges and primary furrows. As a result, adjacent primary vanes may define a winding flow path, the flow path having an entrance and an exit relative to the center line. The cross-sectional area of the flow path may decrease, increase, or remain constant from the entrance to the exit.

Abstract: An embodiment of the present invention provides an apparatus for reducing the magnitude or frequency of flow-induced vibrations. An embodiment of the present invention may be integrated with at least one structure of a reactor pressure vessel of a nuclear reactor. Other embodiments of the present invention may be integrated with other systems that require a dampening of and/or frequency change in the flow-induced vibrations. For example, but not limiting of, the other pressure vessels including: a steam generator, a heat exchanger, a condenser, a boiler, or the like.

Abstract: Systems and methods for demonstrating displays and image capture devices are presented. Such systems and methods are typically provided in a retail environment. Customers may efficiently and easily compare disparate displays and image capture devices at a single location using the systems and methods disclosed herein.

Abstract: Example embodiment damping devices may include a housing capturing a piston. The housing may be filled and/or able to be filled with a damping fluid compatible with the nuclear reactor coolant, so that a leak from the housing or coolant passing into the housing does not damage the reactor or example embodiment devices. Example embodiments may further include one or more springs that provide an elastic force opposing movement between the piston and housing. A shaft of the piston and an end of the housing may be connected to two nuclear reactor components with relative motion or vibration to be damped. Example methods may use example embodiment damping devices to reduce and/or prevent relative motion and vibration among components of a nuclear reactor.

Abstract: Systems and methods for demonstrating displays and image capture devices are presented. Such systems and methods are typically provided in a retail environment. Customers may efficiently and easily compare disparate displays and image capture devices at a single location using the systems and methods disclosed herein.