Abstract

Traditional maintenance and support technologies cannot meet the requirement of the safety,reliability and economy of nuclear power plants. The prognostics and health management( PHM) technology is a technology of on-condition maintenance and it is significant meaningful to preserve the safety and reliability of nuclear power plants. The conception and significance of the PHM technology were introduced.The key technologies of the PHM system were stated. The feasibility of the PHM technology in the pressurized water reactor nuclear power plant( PWRNPP) field was analyzed. The centralized-distributed PHM system of PWRNPP was designed.

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