Westinghouse Electric Company LLC

Stephen J Kaylor

Rodney Lum

James M DuBay

Michael Allen Flanigan

Thanh Tu

Stephen K Parker

Jeffrey A Smouse

Daniel W Golden

Alex Nisenbaum

Wendell Blane Wilton

Gerry L Hodson

A method of repairing a slip joint on a jet pump assembly between an inlet mixer and a diffuser, with the diffuser having an opening that receives the inlet mixer with a given spacing between an outside diameter of the inlet mixer and an inside diameter of the opening in the diffuser forming an annulus whose spacing is a product of manufacture and vibration wear. The method comprises the steps of remotely accessing the annulus and narrowing a radial dimension of the annulus.

Jet pump diffuser stack repair

An improved retention apparatus includes a wedge element that is disposed between a brace element and a flow element of a nuclear reactor system. The retention apparatus further includes an engagement assembly that is engaged with the wedge element and that is structured to engage at least one of the brace element and the flow element. The engagement assembly includes a deflectable element such as a spring that is structured to apply a retention force in an engagement direction of the wedge element to resist movement of the flow element during operation of the nuclear reactor system, such as movement due to vibration.

Retention apparatus employing wedge element and engagement assembly for use in a nuclear application

An auxiliary wedge positioning apparatus/assemblyfor use in a nuclear reactor pressure vesselhaving riser pipingandand a jet pump assemblyand, the apparatushaving a combination slide wedgeand springmounted on a restraint bracket bodyhaving a transverse railwith end gull-wing hooked protrusionswith sectionsand wing stability attachment, the slide wedge used for placement between the riser pipingandand jet pump assemblyandto control vibrations during operation of the reactor vessel

Wedge positioning apparatus for jet pump assemblies in nuclear reactors

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Los Gatos, CA, United States of America

Stephen J Kaylor