Kazuhiro Nitta

Title: Kazuhiro Nitta: Innovator in Laser Technology

Introduction

Kazuhiro Nitta is a prominent inventor based in Kure, Japan. He has made significant contributions to the field of laser technology, particularly in welding and maintenance methods for nuclear power plants. With a total of 2 patents, Nitta's work showcases his expertise and innovative spirit.

Latest Patents

Nitta's latest patents include a laser welding apparatus and a preventive maintenance method for the internal reactor of a nuclear power plant. The laser welding apparatus features a welding head and a scanning apparatus. It utilizes a collimate lens installed on the head body, which is positioned opposite the end face of optical fibers. This design allows for a shortened length of the welding head, enhancing its efficiency. The laser generated by a laser oscillator is introduced into the optical fiber, passes through the collimate lens, and is converted into a parallel beam. This parallel beam is then irradiated onto the surface of the welding portion, melting it for effective welding. Additionally, metallic powder is jetted from feed paths in the head body to perform build-up welding on the melted surface.

Another notable patent is the device and method for repairing the inside of a reactor pressure vessel. This innovation involves creating an opening by cutting a recirculating piping connected to a recirculating nozzle of the reactor pressure vessel. A repairing device is then introduced into the annulus of the reactor pressure vessel from this opening, allowing for effective repairs.

Career Highlights

Throughout his career, Kazuhiro Nitta has worked with notable companies, including Hitachi-GE Nuclear Energy, Ltd. His experience in the nuclear energy sector has greatly influenced his innovative contributions to laser technology.

Collaborations

Nitta has collaborated with esteemed colleagues such as Koichi Kurosawa and Shinya Ohmori. Their combined expertise has further advanced the field of laser applications in industrial settings.

Conclusion

Kazuhiro Nitta's contributions to laser technology and nuclear maintenance methods highlight his innovative capabilities and dedication to advancing engineering solutions. His patents reflect a commitment to improving efficiency and safety in critical applications.