The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
Dec. 06, 2010
Takeshi Yamamoto, Tokyo, JP;
Kazuhide Yamamoto, Tokyo, JP;
Masaya Yamaguchi, Tokyo, JP;
Koji Shukutani, Tokyo, JP;
Takeshi Yamamoto, Tokyo, JP;
Kazuhide Yamamoto, Tokyo, JP;
Masaya Yamaguchi, Tokyo, JP;
Koji Shukutani, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
In a reactor vessel () covered by cooling water (), a tubular frame () with a bottom is hung within the cooling water () while still having an air environment in the interior, and the bottom section of the frame () is disposed within the reactor vessel (), thereby achieving an air environment within the reactor vessel (). Furthermore, since repairs to the reactor vessel () are performed by using the frame () while still having the air environment in the interior, this leads to the prevention of contamination and achieves improvements in working conditions such as preventing the generation of dust and reducing decontamination work. Accordingly, repairs can be performed in an air environment without draining the cooling water () within the reactor vessel (), even in a state in which the reactor vessel () is covered by the cooling water ().