Maintenance recommendation system

A maintenance recommendation system comprising:

• a primary storage unit that stores:
• an input inspection result of equipment,
• an inspection item probability table including a plurality of entries, each entry including a failure mode, an inspection portion of the equipment, an inspection item of the equipment, an inspection item behavior indicating a state of the inspection item, and a conditional probability indicating a probability at which the inspection item is in the state according to the inspection item behavior, and
• a failure mode probability table that stores a plurality of entry indicating one of the failure modes and a respective corresponding occurrence probability indicating a probability the corresponding failure mode occurs;
• a display unit that displays a user interface indicating the inspection portion, the inspection item, and the inspection item behavior of one of the plurality of entries of the inspection item probability table and displaying an interface configured to receive a selection indicating whether the inspection result is true or false;
• a failure mode probability calculation unit that, upon determining the selection is false, obtain a first failure mode and a first conditional probability corresponding to the failure mode based on the displayed inspection portion, inspection item, and the inspection item behavior having the false selection from the inspection item probability table, obtain a first occurrence probability based on the obtained first failure mode from the failure mode probability table, and calculate a probability of a failure mode based on the obtained first conditional probability and the obtained first occurrence probability;
• an inspection item search unit that is configured to extract an inspection item with a minimum inspection score from uninspected inspection items;
• and
• a main routine operation unit that is configured to narrow down a failure mode candidate and an inspection item candidate from all inspection items.