Kabushiki Kaisha Toshiba

Hidekazu Sasaki

Takuya Uehara

Hiroshi Nomura

Itaru Chida

Hiromi Kato

Yoshiaki Ono

Toshihiro Yasuda

Itaru Murakami

Keiichi Hirota

Tomoki Suetake

A laser irradiation apparatus of the embodiment includes: a laser light transmission mechanism to guide laser light from a laser light source and emit the laser light from a laser light emission part; a condensing mechanism to condense the laser light; a pipe state casing to house and hold the condensing mechanism inside thereof and have an opening part to irradiate the laser light; a fluid supply mechanism to supply a fluid into the casing to emit the fluid from the opening part; a positioning mechanism provided at the casing to keep a distance from the condensing mechanism to the processing object constant by being brought into contact with the processing object; and a fluid guide mechanism to guide the fluid emitted from the opening part to flow between the casing and the processing object along an axial direction of the casing.

Laser irradiation apparatus and laser irradiation method

A maintenance/repair device for reactor internal structureof the present invention includes a device bodyconfigured to be fixed on a reactor internal structure. Connected to the device bodyis a welding-part repair mechanismconfigured to repair a welding partof the reactor internal structure. Thus, a welding partof the reactor internal structurecan be repaired by the welding-part repair mechanism, while the device bodyis fixed on the reactor internal structure

Maintenance/repair device for reactor internal structure

A stress treatment device has an operating unit including a head unit performing peening by irradiating an inside of a hole formed in a structure with laser to form a compressive stress region in the hole; a laser unit having an optical fiber guiding the laser to the head unit; a jetting unit jetting liquid into the hole; and a support part supporting the optical fiber in a manner of allowing the jetted liquid to flow through and being fixed in the head unit.

Stress treatment device, operating system, and method of making turbine

Maintenance and repair device for structure inside nuclear reactor

Growing community of inventors

Kawasaki, Japan

Hidekazu Sasaki