Mainformatics for Condition Monitoring Based Predictive Maintenance

Maintenance, or simply repairing, may be born with the beginning of industry. If it were not for maintenance, we could not keep the pace of industrialization because of excessive resource waste. While maintenance always exists, its meaning is getting more focused as the industry is more matured, more competitive, and more significant, which is apparently taking place in nuclear industry. In Korea, ∼ 30% of the operating NPPs are older than 20 years. According to NUREG/CR-6679, the average degradation rate has increased from 0.065 to 0.24 during the past decade, which may be applicable to Korean NPPs. The economics of NPPs is always controversial, but its role in producing stable and cheap electricity is currently more emphasized.