Abstract: A damage evaluation device evaluates damage of equipment, including an operation data obtaining unit which detects a state of the equipment to obtain the state as operation data; an operating state quantity evaluation unit which calculates an operating state quantity including at least one of temperature and generated stress at a predetermined evaluation-target site of the equipment, based on the operation data; a material deterioration evaluation unit which evaluates a material deterioration quantity of a material forming the equipment, based on the operating state quantity; a risk evaluation unit which evaluates at least one of a cumulative damage quantity of the material forming the equipment and failure risk, based on the operating state quantity and the material deterioration quantity; and a recommended maintenance time presentation unit which presents a recommended maintenance time of the equipment based on a result of the evaluation of the risk evaluation unit.

Abstract: A material deterioration evaluation device for evaluating embrittlement of equipment, includes: an operation data obtaining unit that detects and obtains a state of the equipment as operation data; an operation data storage unit that saves the operation data; a temperature evaluation unit that calculates a predetermined evaluation-target site temperature of the equipment based on the operation data; an evaluation-target component material storage unit that stores material data of a material forming the equipment and embrittlement estimation formulas; an embrittlement evaluation unit that calculates an embrittlement quantity of the material forming the equipment based on the evaluation-target site temperature, the material data, and the embrittlement estimation formulas; a risk evaluation unit that calculates a damage risk of the material that forms the equipment based on the embrittlement quantity; and a recommended maintenance time presentation unit that presents a recommended maintenance time of the equipme

Abstract: A damage evaluation device evaluates damage of equipment, including an operation data obtaining unit which detects a state of the equipment to obtain the state as operation data; an operating state quantity evaluation unit which calculates an operating state quantity including at least one of temperature and generated stress at a predetermined evaluation-target site of the equipment, based on the operation data; a material deterioration evaluation unit which evaluates a material deterioration quantity of a material forming the equipment, based on the operating state quantity; a risk evaluation unit which evaluates at least one of a cumulative damage quantity of the material forming the equipment and failure risk, based on the operating state quantity and the material deterioration quantity; and a recommended maintenance time presentation unit which presents a recommended maintenance time of the equipment based on a result of the evaluation of the risk evaluation unit.