Successful Process Safety Management Requires a Barrier Risk Assessment Tool

The expected outcome of Process Safety Management is to minimize the likelihood of a major accident hazard from occurring and ensure that the necessary mitigation and emergency preparedness mechanisms are in place in the event that an accident does happen. PSM programs objectives are to establish comprehensive, robust and sustainable systems, practices and competencies for managing Process Safety and to ensure that focus on Process Safety (low frequency-high consequence) issues is maintained. This paper describes in detail how a Barrier/BowTie approach to PSM is the missing link in assurance of process safety. The paper will include how the Barrier PSM program is established within the framework of an established PSM program. The barrier approach not only enhances process safety but ensures that the processes in place are functioning as expected. A case study example is used to illustrate how continuous improvement is achieved and maintained.