Abstract: A risk assessment device for displaying a risk matrix in which a probability of malfunction and a degree of influence of malfunction are set as two axes includes a malfunction probability acquisition unit configured to acquire, with respect to a target device group, a data group that indicates a temporal change of the probability of malfunction from a current point in time, an influence degree acquisition unit configured to acquire a degree of influence that corresponds to the target device group, and an image data creation unit configured to create image data for displaying a plot diagram that is obtained by plotting, with respect to each probability of malfunction that constitutes the acquired data group, a pair of the probability of malfunction and the acquired degree of influence on the risk matrix.

Abstract: A risk assessment device includes a parameter storage unit that calculates, based on data for calculation, one or more parameters for calculating a target malfunction curve and stores the calculated parameters, the parameters relating to piping system-related items, the data for calculation being stored in a storage unit in which the piping system-related items and a number of years passed before malfunction are stored as the data for calculation with respect to each of a plurality of process devices; a calculation condition acquisition unit that acquires the piping system-related items with respect to a target process device; a parameter acquisition unit that acquires a calculation parameter for obtaining the target malfunction curve based on the piping system-related items acquired with respect to the target process device and the stored parameters; and a malfunction curve calculation unit that calculates the target malfunction curve based on the calculation parameter.

Abstract: A risk assessment device includes a parameter storage unit that calculates, based on data for calculation, one or more parameters for calculating a target malfunction curve and stores the calculated parameters, the parameters relating to piping system-related items, the data for calculation being stored in a storage unit in which the piping system-related items and a number of years passed before malfunction are stored as the data for calculation with respect to each of a plurality of process devices; a calculation condition acquisition unit that acquires the piping system-related items with respect to a target process device; a parameter acquisition unit that acquires a calculation parameter for obtaining the target malfunction curve based on the piping system-related items acquired with respect to the target process device and the stored parameters; and a malfunction curve calculation unit that calculates the target malfunction curve based on the calculation parameter.

Abstract: A risk assessment device for displaying a risk matrix in which a probability of malfunction and a degree of influence of malfunction are set as two axes includes a malfunction probability acquisition unit configured to acquire, with respect to a target device group, a data group that indicates a temporal change of the probability of malfunction from a current point in time, an influence degree acquisition unit configured to acquire a degree of influence that corresponds to the target device group, and an image data creation unit configured to create image data for displaying a plot diagram that is obtained by plotting, with respect to each probability of malfunction that constitutes the acquired data group, a pair of the probability of malfunction and the acquired degree of influence on the risk matrix.