General Electric Company

Other

Praxair Technology, Inc.

David H Bothell

Paul H Tacheron

David O Monserud

Mark H Marvin

James Edward Charnley

Michael C McDonald

Gunnar V Vatvedt

David E Steele

Steven J Craigen

Peter J Miles

Ronald C Lilley

John William Hoose

Steven Robert Lalumandier

Thomas J Cowling

Mohamad Hashish

An apparatus for inspecting an conduit such as a furnace tube comprising at least first and second module shells, each shell having an axially contoured exterior, and a flexible, non-jointed intermodule connector joining the first and second shells. Preferably, each module has a length that is 1.0 to 2.4 times its outer diameter and the connector has a length that is 0.5 to 2.0 times the outer module diameter.

Furnace tube inspection apparatus

The invention describes a method and apparatus for milling objects by means of high velocity abrasive waterjet. The apparatus includes means for holding and producing relative motion in three dimensions of both the workpiece and the jet. Control means are provided to allow uniform and variable depth milling of complex shapes and automatic variations in relative speed, standoff distance, angle and pressure. The method includes the use of a resistant mask for facilitating milling and production of masks by the same tool used for milling.

Method and apparatus for abrasive water jet millins

An apparatus for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having a nozzle which scans the cleaning waterjet across the surface to be cleaned. The cleaning system includes a nozzle cleaning tool, a throat/barrel/flare cleaning tool, pumping systems for supplying ultra-high-pressure equal to at least 20,000 psi and low-pressure water to an installed cleaning tool, a launching system located at the top of the opened reactor vessel for feeding the water conduits (power), control cables, monitoring cables (instrument) and cleaning tool into and out of the inlet mixer, and a computerized process monitoring and control system.

In situ inlet mixer cleaning system

A method for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A water-powered cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having an nozzle which scans the cleaning waterjet across the surface to be cleaned. The cleaning system for carrying out the method includes a nozzle cleaning tool, a throat/barrel/flare cleaning tool, pumping systems for supplying ultra-high-pressure equal to at least 20,000 psi and low-pressure water to an installed cleaning tool, a launching system located at the top of the opened reactor vessel for feeding the water conduits (power), control cables, monitoring cables (instrument) and cleaning tool into and out of the inlet mixer, and a computerized process monitoring and control system.

Method for in situ cleaning of inlet mixers

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Puyallup, WA, United States of America

David H Bothell