Application of DCS for Protection System in Nuclear Power Plant

The safety DCS based on digital technology has replaced analog technology to become mainstream applications for protection systems in the nuclear power plant.The reliability of DCS technology is very important because high safety requirements for nuclear power plants.In order to ensure the reliability of the DCS technology design,by analyzed the requirements of relevant codes and standards,summed up the qualification test items and software verification and validation process shall be performed for safety DCS design,and combining technical characteristics of the current major several safety DCS application product.The key technologies points of controller,intelligent IO module,priority actuation module and communication etc.should be considered for the safety DCS design and development are proposed.