Presented as a webinar on Tuesday, March 31, 2026, these slides explain how functional safety complements existing PHA, LOPA, and PSM programs by ensuring your instrumented safeguards actually deliver the risk reduction you are counting on. Charlie Souza, MSEE, PE, PMP, CAP, Functional Safety & ICS Cybersecurity Lead at AcuTech walked through how SIS requirements can be traced back to PHA/LOPA, mechanical integrity, and management of change elements, creating a coherent safety lifecycle rather than a set of disconnected activities.