公开(公告)号：US6026582A

公开(公告)日：2000-02-22

申请号：US842862

申请日：1997-04-17

Applicant: James C. Donohue ,  Benedict Kazirskis

Inventor： James C. Donohue ,  Benedict Kazirskis

IPC: G01B5/12 ,  G01B7/13 ,  E21B47/08 ,  G01B21/14

CPC classification number: G01B7/13 ,  G01B5/12

Abstract: Methods and apparatus for mapping pipe and valve bores in a reactor pressure vessel (RPV) of a nuclear reactor are described. In one embodiment of the apparatus, a main bar and an adjustable chuck facilitate positioning of a digital indicator inside a valve bore. In the one embodiment, the main bar is rotatably coupled to the chuck, and the chuck includes four movable jaws. A data acquisition element, which includes a digital indicator, is movably coupled to the main bar and configured to move substantially coaxially to the main bar. To map the circumference of the bore, the main bar and the chuck are inserted into the valve bore, and the chuck is used to center the main bar coaxially within the valve bore. The data acquisition element is positioned at a first location along the main bar, and the main bar is rotated so that the digital indicator maps the circumference of the bore. The data acquisition element is then moved to different locations along the main bar to map the circumference of the bore at different locations.

Abstract translation: 描述了用于在核反应堆的反应堆压力容器（RPV）中映射管和阀孔的方法和装置。 在装置的一个实施例中，主杆和可调节卡盘有助于将数字指示器定位在阀孔内。 在一个实施例中，主杆可旋转地联接到卡盘，并且卡盘包括四个可动爪。 包括数字指示器的数据采集元件可移动地联接到主杆并且构造成大致同轴地移动到主杆。 为了映射孔的周长，将主杆和卡盘插入阀孔中，并且卡盘用于将主杆同轴地定位在阀孔内。 数据采集​​元件位于沿着主杆的第一位置，并且主杆被旋转，使得数字指示器映射孔的圆周。 然后将数据采集元件沿主杆移动到不同的位置，以在不同位置映射孔的圆周。

公开(公告)号：US5515589A

公开(公告)日：1996-05-14

申请号：US364333

申请日：1994-12-27

Applicant: Benedict Kazirskis ,  James C. Donohue

Inventor： Benedict Kazirskis ,  James C. Donohue

IPC: B23K9/04 ,  G21C13/032 ,  B23K37/02

CPC classification number: B23K9/044 ,  G21C13/032 ,  B23K2201/06 ,  G21Y2002/104 ,  G21Y2004/50 ,  Y02E30/40 ,  Y10T29/49746

Abstract: A method for upgrading/repairing existing piping systems of a nuclear reactor without removal/replacement of the old piping. The process involves the steps of machining a counterbore of exposed corrosion-susceptible material and then depositing a corrosion-resistant weld material, thereby isolating the weld joint from corrosion susceptibility. A tool is inserted into the inside diameter of the piping system through an inspection port, valve body or segment removal. Then a tool mounting fixture equipped with axial and rotational capabilities is positioned in relation to the weld joint and locked in place. The tool mounting fixture remains locked in place throughout the entire repair process. A work surface mapping module is programmed to first gather relative reference points throughout the entire repair region. Upon data acquisition completion, the system creates a map of the existing inside diameter configuration. Then in successive stages, a machining head module and a welding head module are respectively manually installed and remotely operated by computer control. The machining and welding processes follow the existing configuration such that upon completion, the final repair blends with the piping inside diameter contour.

Abstract translation: 一种用于升级/修复现有的核反应堆管道系统的方法，无需拆除/更换旧管道。 该方法包括加工暴露的耐腐蚀材料的沉孔的步骤，然后沉积耐腐蚀的焊接材料，从而将焊接接头与腐蚀敏感性隔离。 工具通过检查口，阀体或管段拆除而插入管道系统的内径。 然后，具有轴向和旋转能力的工具安装夹具相对于焊接接头定位并锁定就位。 在整个维修过程中，工具安装夹具保持锁定到位。 工作表面映射模块被编程为首先在整个修复区域收集相对参考点。 数据采集​​完成后，系统创建现有内径配置的映射。 然后在连续阶段，分别手动安装加工头模块和焊接头模块，并通过计算机控制进行远程操作。 加工和焊接过程遵循现有的配置，使得在完成后，最终的修复与管道内径轮廓混合。