Optimization of Maintenance Intervals for Equipment

To improve nuclear power plant availability, we are engaged in improvement activities to optimize maintenance intervals for equipment, including Fine Motion Control Rod Drives (FMCRDs)^*.

* FMCRD (Fine Motion Control Rod Drives):: Drive mechanisms that operate control rods (CRs) by vertical movement during plant startup, shutdown, and power adjustment.

Key Features of Initiatives for Optimizing Maintenance Intervals

Improved Reliability through Continuous Optimization of Maintenance Intervals

Through the PDCA cycle described below, we continuously improve equipment maintenance and contribute to enhanced reliability of nuclear power plants.

Optimization of Maintenance Intervals Based on Degradation Mechanism Analysis

After evaluating equipment degradation mechanisms, we comprehensively assess degradation trends, operational experience of similar equipment, and research results to propose optimal maintenance intervals for equipment such as FMCRDs.