7 Scope and Applicability Although the technical guidance in this document maybe applied to any system or component that contains software, the primary focus is on HSSSR DI&C systems. Risk insights from site-specific probabilistic risk assessments (PRAs) can be used to support the safety-significance determination in categorizing the DI&C system or component. Use of such risk insights should bean input to an integrated decision-making process for categorizing the proposed DI&C system or component. The two criteria below are additional inputs to consider in determining the high safety-significant categorization 1. Safety-related SSCs relied upon to initiate and complete control actions essential to maintain plant parameters within acceptable limits established fora DBE or to maintain the plant in a safe state after it has reached safe shutdown or 2. Safety-related systems and equipment whose failure could directly lead to accident conditions that may cause unacceptable consequences (i.e., exceeds acceptable limits fora DBE) if no other automatic systems are available to provide the safety function, or no pre-planned manual operator actions have been validated to provide the safety function.
