Maintenance management device and method for high-temperature furnace equipment

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

• processing circuitry configured to
• numerically integrate point values for each of a plurality of thermal factors that each exert a thermal stress on a high-temperature furnace equipment, using an operation time of the high-temperature furnace equipment as an integration period, the point values being obtained from information received from sensors/actuators of the high-temperature furnace equipment, wherein the processing circuitry is configured to set a reference value of an amount of thermal stress per unit time received by the high-temperature furnace equipment as a reference thermal stress amount, and obtain the point values by converting actual values of the amount of thermal stress for each of the thermal factors into units of the reference thermal stress amount;
• and
• predict 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, wherein the processing circuitry is configured to set the lifetime thermal stress amount as 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 units of the reference thermal stress amount, and set point values integrated using the operation time of the high-temperature furnace equipment as an integration period as the accumulated thermal stress amount.