Abstract
Qualitative risk assessment such as preliminary hazard analysis (PHA) is extremely crucial in promoting inherent safety design in the early phase of development. Compared with previous developments, inherent safety design is being pursued more thoroughly as product development becomes larger and/or more complex. On the other hand, many engineers share their work loads and have more interfaces in their projects. Under these situations, hazard identification and risk evaluation in qualitative risk assessment should be improved with quantified expression. The authors proposed the methodology of quantification and approximation formulas in the other presented paper. This paper presents actual effectiveness of the presented methodology with the results of questionnaire survey for engineers of satellite development as a case study. Furthermore, this paper includes considerations for application to improve information sharing and risk communication of qualitative risk assessment with obtained parameters of the approximation formulas.
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