| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique that specifies an event having mutual dependency and including a coincidental factor in a precariousness scenario, and assists a calculation of accurate occurence probability with respect to a disaster event.SOLUTION: An FT calculation assisting program is configured to make a computer execute the steps of: extracting a name of a constituent element and an attribute thereof in which at least an operation is performed in responce to an occurence event from the scenario; searching for all constituent elements in which the operation is performed in responce to the occurence event included in the scenario on the basis of the extracted name and attribute; as a retrieved result, when the same name and attribute as the extracted name and attribute exist, specifying the constituent element of the same name and attribute as a common factor event; calculating a safety evaluation index of the scenario leading to a disaster event of a process on the basis of the specified common factor event; and outputting the calculated safety evaluation index of the scenario leading to the disaster event of the process. |
