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:
Dec. 04, 2018
Filed:
Oct. 13, 2016
Applicant:
Central Research Institute of Electric Power Industry, Tokyo, JP;
Inventor:
Hirofumi Takeda, Chiba, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21F 5/10 (2006.01); G01M 3/00 (2006.01); G21F 5/12 (2006.01);
U.S. Cl.
CPC ...
G01M 3/002 (2013.01); G21F 5/12 (2013.01); G21F 2005/125 (2013.01);
Abstract
A method for detecting gas leakage from a radioactive material sealed container includes measuring a temperature at a bottom portion of a metallic sealed container. A feeding air temperature of external air passing between the metallic sealed container and a concrete-made storage container is also measured. Presence of leakage of inactive gas is determined by comparing the temperatures or by utilizing a physical amount calculated by using the temperatures.