Exploration of Factory Testing Requirements Analysis Methods for Nuclear Safety Class DCS

The safety class DCS of nuclear power plants is an important component of the DCS, and ensuring its system reliability and stability is crucial. The factory test provides the most powerful guarantee for the reliability of the safety class DCS. To fully cover all design requirements and improve the coverage and adequacy of factory testing, this article takes the analysis of factory testing requirements for the safety class DCS of the “Hualong One” unit of China National Nuclear Corporation as an example. It proposes different types of principles for analyzing test requirements for large-scale and complex systems, clarifies the corresponding analysis elements, and manages test requirements using a requirements traceability matrix. This provides a framework for analyzing test requirements for factory testing activities to enhance the coverage and adequacy of factory testing for the safety class DCS.