A new case study has been added to the classroom. Scenario: A 1998 installed SIS with unknown diagnostic coverage is still in service. The asset owner believes it achieves SIL2 based on vendor documentation. Your task: Determine whether the claim is credible. Full case study here: [link] Questions: • What is the first thing you would check? • How would you deal with missing failure rate data? • Would you accept prior-use evidence?

1. Based on your experience with FSA Stage 1 to 5 in EPC Oil & Gas projects, what are the most critical anomalies or non-conformities usually identified onsite compared to approved documents such as SRS, Cause & Effect, FAT, and SAT? 2. From your lessons learned, what are the most frequent issues encountered during FSAs: - poor SIS bypass management, - overdue proof testing, - DCS/SIS integration gaps, - incomplete MOC process, - or field vs As-Built discrepancies?

Hi All, Firstly, thanks to Richard for this initiative. Thanks for accepting me in the group. I am Process /Technical Safety Engineer working in Oil and Gas Industry. best regards!