Maintenance management device and method for high-temperature furnace equipment

A maintenance management device for a high-temperature furnace equipment comprising:

• a point value integrating portion that integrates point values for each of elements that exert a thermal stress on a high-temperature furnace equipment with operation time of the high-temperature furnace equipment as an integration period, in which a reference value of an amount of thermal stress per unit time received by the high-temperature furnace equipment is set as a reference thermal stress amount, and the point values are obtained by converting actual values of the amount of thermal stress for each of the element into the reference thermal stress amount;
• and
• a remaining lifetime predicting portion that predicts a remaining lifetime of the high-temperature furnace equipment based on a result of subtracting an accumulated thermal stress amount from a lifetime thermal stress amount in which a point value obtained by converting a limit value of the thermal stress amount with which the high-temperature furnace equipment can normally operate into the reference thermal stress amount is set as the lifetime thermal stress amount, and point values integrated with the operation time of the high-temperature furnace equipment as an integration period is set as the accumulated thermal stress amount.