Unitika Ltd.

Mitsubishi Heavy Industries Limited

Toyo Ink Manufacturing Company

Toyo Ink Mfg. Co., Ltd.

Reiko Ueno

Takayoshi Okuzu

Kunihiko Ozaki

Mitsuo Yoshida

Hideki Kuwata

Miyuki Kamoshita

Junji Okamoto

Takeshi Yamamoto

Masaki Noda

Daisuke Hara

Yuki Kobayashi

Munehiro Miyake

Kohei Tada

A method of disassembling a steam generator including a body portion, a water chamber, a tube plate and a plurality of heat transfer tubes, the method includes: a step of obtaining a disassembly target including the tube plate and a part of the heat transfer tubes; a step of specifying the heat transfer tube fixed to the tube plate; a step of releasing fixation between the part of the heat transfer tube and the tube plate; and a step of pulling out the part of the heat transfer tube from the through-hole, in the step of releasing the fixation, the TIG heating head is inserted from the primary region side, and in the step of releasing the fixation, the TIG heating head is moved to a plurality of streaks only in a direction from the primary region side to the secondary region side.

Method of disassembling steam generator

Disclosed is a coating material for forming a gas barrier. The coating material includes a polyalcohol polymer, a polycarboxylic acid polymer, and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component, or alternatively a monovalent metal compound whose surface is coated with a poorly water-soluble component and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component. By applying this coating material to a plastic substrate layer, a gas-barrier multilayer body having a gas-barrier layer formed thereon is obtained.

Coating material for forming gas-barrier layer and gas-barrier multilayer body

Gas barrier laminate

Growing community of inventors

Tokyo, Japan

Reiko Ueno