Kelvin Tashiro

Title: Innovations by Kelvin Tashiro in Reactor Pressure Tube Inspection

Introduction

Kelvin Tashiro is a notable inventor based in Guelph, Canada. He has made significant contributions to the field of materials science, particularly in the inspection of reactor pressure tubes. His innovative approach has led to the development of a unique method and apparatus that enhances the safety and reliability of reactor components.

Latest Patents

Kelvin Tashiro holds a patent for "Methods and apparatus for inspecting reactor pressure tubes." This invention provides an apparatus and method for determining terminal solid solubility temperature in materials capable of forming hydrides, such as reactor pressure tubes. The inspection device is strategically positioned within the reactor pressure tube under test, where a pair of annular seals are radially deployed to seal a section of the pressure tube. Any water within the sealed section is displaced through the injection of gas and the heating of the sealed section to dry both the tube and the device. A probe assembly on the device is deployed to contact the interior surface of the pressure tube and measure resistivity changes in the pressure tube wall as a function of temperature. The probe assembly includes a thermocouple probe for measuring temperature and transmit and receive coils for inducing eddy currents within the pressure tube wall. The pressure tube is allowed to cool at a predetermined rate, is reheated at a predetermined rate, and is allowed to cool again. Discontinuities within the temperature coefficient of resistivity indicate terminal solid solubility temperatures of precipitation or dissolution, which may be used to determine the hydrogen concentration of the sealed section of the reactor pressure tube. Kelvin Tashiro has 1 patent to his name.

Career Highlights

Throughout his career, Kelvin Tashiro has worked with prominent companies in the energy sector. He has been associated with Ontario Power Generation, Inc. and Kinetrics, Inc. These experiences have provided him with valuable insights and expertise in reactor technology and materials inspection.

Collaborations

Kelvin has collaborated with several professionals in his field, including John H. Sedo and Mario Ng. Their collective efforts have contributed to advancements in reactor pressure tube inspection methodologies.

Conclusion

Kelvin Tashiro's innovative work in the inspection of reactor pressure tubes showcases his commitment to enhancing safety in nuclear energy applications. His patented methods and collaborative efforts reflect his significant contributions to the field of materials