4.2.1. RPN Evaluation—Severity Criteria

Table 2 shows the S criteria, one of the RPN evaluation factors for a fuel cell-based hybrid power system. The newly applied evaluation criteria were classified as 1, 2, or 3 to enable the accurate evaluation of S from the system and the customer perspectives. Evaluation Criteria 1 simultaneously reflects both the system and customer effects, while Evaluation Criteria 2 contains the corresponding more detailed effects. Evaluation Criteria 3 consists of the effects on the development stage.


