Research on Digital Requirements Management for Nuclear Safety-Class DCS System Design

As an important system for the safe operation of nuclear power plants, the nuclear safety-class distributed control system (DCS) realizes important functions in achieving emergency reactor tripping, dedicated to important functions such as security facility drives. It should strictly guarantee that the key functional requirements are complete and correctly designed. The requirements of the nuclear safety-class DCS system are characterized by huge quantity and complex traceability, and the traditional mode based on the manual processing of documents makes it difficult to meet the requirements. Digital requirements management can quickly query requirements and trace their upstream and downstream, quickly and automatically analyze the scope of influence when changes are made, and ensure that all requirements have been met and realized. Hence, by adopting a system model design driven by index parameters, rapid verification technology with model parameters as the core, and combining typical tools and templates to realize automatic and manual requirements rapid tracking, we can satisfy the digitization of requirements capture, tracking, analysis, and management, and eliminate functional defects or loss of functionality due to the deviation of the design from the requirements.