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:
Aug. 02, 2005
Filed:
Apr. 09, 2003
Kazunari Fujiyama, Kanagawa-ken, JP;
Toshihiro Fujiwara, Kanagawa-ken, JP;
Kazuhiro Saito, Kanagawa-ken, JP;
Taiji Hirawawa, Kanagawa-ken, JP;
Satoshi Nagai, Kanagawa-ken, JP;
Hitoshi Kichise, Kanagawa-ken, JP;
Mitsuyoshi Okazaki, Saitama-ken, JP;
Hirotsugu Kodama, Tokyo-to, JP;
Seiichi Asatsu, Kanagawa-ken, JP;
Masanori Minowa, Tokyo-to, JP;
Takayuki Iwahashi, Kanagawa-ken, JP;
Shigeru Harada, Tokyo-to, JP;
Mamoru Sudo, Kanagawa-ken, JP;
Fumiharu Ishii, Tokyo-to, JP;
Kazunari Fujiyama, Kanagawa-ken, JP;
Toshihiro Fujiwara, Kanagawa-ken, JP;
Kazuhiro Saito, Kanagawa-ken, JP;
Taiji Hirawawa, Kanagawa-ken, JP;
Satoshi Nagai, Kanagawa-ken, JP;
Hitoshi Kichise, Kanagawa-ken, JP;
Mitsuyoshi Okazaki, Saitama-ken, JP;
Hirotsugu Kodama, Tokyo-to, JP;
Seiichi Asatsu, Kanagawa-ken, JP;
Masanori Minowa, Tokyo-to, JP;
Takayuki Iwahashi, Kanagawa-ken, JP;
Shigeru Harada, Tokyo-to, JP;
Mamoru Sudo, Kanagawa-ken, JP;
Fumiharu Ishii, Tokyo-to, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An apparatus for maintaining plant equipment incorporates an input unit to receive information on targets and ranges of plant equipment to be maintained and a failure-event tree breakdown unit to perform tree-breakdown on failures to be expected from events to be inspected. A failure-unreliability function calculation unit calculates unreliability of each item in failure-event tree breakdown and a failure-derived monetary loss calculation unit multiplies each unreliability and a cost of recovery from each event in accordance with the failure-event tree breakdown. A preventive maintenance expense calculation unit calculates preventive maintenance expenses for preventing failure events and a maintenance decision-making unit decides maintenance timing and technique through comparison between the recovery cost and the preventive maintenance expense.