Patent ID: 7676164

Claim:
A lifetime management device that manages lifetime of a device and components mounted on the device, the lifetime management device comprising: a measuring unit that measures an operation amount of the device and each of the components; a calculating unit that calculates remaining lifetime of each of the components based on the operation amount and a lifetime index; a determining unit that determines whether each of the components needs to be replaced as a component in need of replacement based on the remaining lifetime and a replacement index; and an order-time determining unit that determines a time to order replacement of the component in need of replacement based on, a determination by the determining unit, and the remaining lifetime of other components that do not need to be replaced yet as a component in no need of replacement determined by the determining unit, wherein the order-time determining unit, when determining that the remaining lifetime of the component in no need of replacement is equal to or less than a predetermined threshold, delays the time to order the replacement of the component in need of replacement until the component in no need of replacement is determined to be in need of replacement.