INTEGRATED MAINTENANCE SYSTEM FOR POWER PLANT

PROBLEM TO BE SOLVED: To provide an integrated maintenance system for a power plant, which solves the following problems in a technique of linking setting and comparison of KPI between power plants when managing information of a plurality of power plants: that as to the setting and comparison of KPI, (1) KPI cannot be set uniformly unless the power plants are completely identical ones which are constructed with completely identical design at the same period; and that (2) when comparing KPIs among respective units and power plants in fleet management, simple comparison cannot be performed at the same period since aging states and various technical levels are different.SOLUTION: A causal relation expression representing a causal relation between a KPI and an index and performance data affecting the KPI, a relation expression as to performance data in a target achievement period, and the like are calculated, a period elapsed until an index in a subsequent facility reaches a target is calculated, and the calculated target value and a target achievement period are set to the subsequent facility. A new KPI setting standard setting part discriminates by which criteria changeover input by the user is performed, and makes a function expression which is used for a determination criteria for a future changeover. A new KPI setting determination part sequentially performs calculation with a reference function expression for KPI changeover so as to calculate a timing of changeover from a function expression as a determination criteria.