RISK EVALUATION DEVICE, RISK EVALUATION SYSTEM, RISK EVALUATION METHOD, RISK EVALUATION PROGRAM, AND DATA STRUCTURE

摘要

A risk assessment device (3) for performing risk assessment of a steam plant that includes at least one device group that includes a steam-utilizing device that utilizes steam, a piping system that is connected to the steam-utilizing device, and process devices that are provided in the piping system, the risk assessment device includes a diagnosis result storage unit (323) that accumulatively stores diagnosis results of a plurality of diagnoses regarding each process device that is provided in the steam plant to be assessed, in association with installation sites of the process devices, a risk information calculation unit (33) that calculates risk information regarding a likelihood of malfunction of a process device that is provided at a target installation site, based on diagnosis results regarding process devices that are and have been provided at the target installation site, and a device group risk information calculation unit (34) that calculates device group risk information regarding a likelihood of malfunction of a target device group, based on the risk information regarding installation sites of respective process devices that constitute the target device group.