公开(公告)号：US20180261341A1

公开(公告)日：2018-09-13

申请号：US15974888

申请日：2018-05-09

Applicant: BWXT mPower, Inc.

Inventor： Lewis A. Walton ,  George S. Pabis ,  Julius M. Ullmann ,  Jean H. Raas ,  Martha A. Gilliam ,  Anne R. Austin ,  Eric A. Barringer

IPC: G21C13/024 ,  G21C13/02 ,  G21C7/08 ,  G21C1/32 ,  G21C3/33

CPC classification number: G21C13/024 ,  G21C1/32 ,  G21C3/33 ,  G21C7/08 ,  G21C13/02 ,  Y02E30/32 ,  Y02E30/39

Abstract: A pressurized water reactor (PWR) comprises a pressure vessel containing primary coolant water. A nuclear reactor core is disposed in the pressure vessel and includes a plurality of fuel assemblies. Each fuel assembly includes a plurality of fuel rods containing a fissile material. A control system includes a plurality of control rod assemblies (CRA's). Each CRA is guided by a corresponding CRA guide structure. A support element is disposed above the CRA guide structures and supports the CRA guide structures. The pressure vessel may be cylindrical, and the support element may comprise a support plate having a circular periphery supported by the cylindrical pressure vessel. The CRA guide structures suitably hang downward from the support plate. The lower end of each CRA guide structure may include alignment features that engage corresponding alignment features of the upper end of the corresponding fuel assembly.

公开(公告)号：US11120919B2

公开(公告)日：2021-09-14

申请号：US15974888

申请日：2018-05-09

Applicant: BWXT mPower, Inc.

Inventor： Lewis A. Walton ,  George S. Pabis ,  Julius M. Ullmann ,  Jean H. Raas ,  Martha A. Gilliam ,  Anne R. Austin ,  Eric A. Barringer

IPC: G21C1/32 ,  G21C3/33 ,  G21C7/08 ,  G21C13/02 ,  G21C13/024

Abstract: A pressurized water reactor (PWR) comprises a pressure vessel containing primary coolant water. A nuclear reactor core is disposed in the pressure vessel and includes a plurality of fuel assemblies. Each fuel assembly includes a plurality of fuel rods containing a fissile material. A control system includes a plurality of control rod assemblies (CRA's). Each CRA is guided by a corresponding CRA guide structure. A support element is disposed above the CRA guide structures and supports the CRA guide structures. The pressure vessel may be cylindrical, and the support element may comprise a support plate having a circular periphery supported by the cylindrical pressure vessel. The CRA guide structures suitably hang downward from the support plate. The lower end of each CRA guide structure may include alignment features that engage corresponding alignment features of the upper end of the corresponding fuel assembly.