MAINTENANCE WORK PERIOD OPTIMIZATION APPARATUS AND MAINTENANCE WORK PERIOD OPTIMIZATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a maintenance work period optimization apparatus capable of determining a proper work period on respective units each having different characteristics in failure occurrence ratio.SOLUTION: The maintenance work period optimization apparatus includes: a data storage section (10) that stores a failure ratio distribution data relevant to each of plural units; a unit classification section (20) that classifies the plural units into sharp change units, degradation units and stable units based on the failure ratio distribution data; a proper work period calculation section (30) that calculates proper work period for each unit. The unit classification section (20) performs a Welch verification to determine whether a unit is a sharp change unit or not, and performs a Cox-Stuart verification to determine whether a unit is a degradation unit or not. The proper work period calculation section (30) calculates correction work period according to the verification result in a quantitative manner.