Plant maintenance method and apparatus

Details Plant maintenance method and apparatus Plant maintenance method and apparatus

2005-08-02

2005-08-02

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C702S182000, C702S185000

Reexamination Certificate

active

06925418

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.

REFERENCES:
patent: 5311562 (1994-05-01), Palusamy et al.
patent: 5648919 (1997-07-01), Yamauchi et al.
patent: 5970437 (1999-10-01), Gorman et al.
patent: 6505145 (2003-01-01), Bjornson
patent: 6618692 (2003-09-01), Takahashi et al.
U.S. Appl. No. 10/409,278, filed Apr. 9, 2003, Fujiyama et al.

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