Edward M. Marszal – författare

Security PHA Review for Consequence-Based Cybersecurity presents a practical, process-centric method that uses existing process hazard analysis (PHA) outputs, such as hazard and operability (HAZOP) studies, to determine appropriate cybersecurity requirements for industrial process plants. The objective of the security PHA review (SPR) is to identify process hazard scenarios that could be caused by malicious cyber actions and then either recommend non hackable safeguards to remove the cyber vector or assign an appropriate ISA/IEC 62443 security level (SL) to guide cybersecurity design and implementation. This approach emphasizes assessing initiating events, reviewing all safeguards (both cyber and non cyber) and evaluating consequences in the context of an organization's risk tolerance criteria. This book explains how SLs apply to security zones and how conduits inherit the highest SL among connected zones and situates SPR within the ISA/IEC 62443 lifecycle. It emphasizes a process hazard perspective rather than equipment only vulnerability listings, describes practical documentation methods (highlighter annotations, dedicated SPR reports or PHA software integration) and highlights common non hackable safeguards (such as mechanical relief devices, buckling pins, motor overload relays and external current monitors) that can reduce required SLs when feasible. Written so that process engineers, control systems professionals, IT professionals and cybersecurity specialists can learn to integrate IT security with process-safety practices without unnecessary duplication of effort. It provides practical, implementable methods, centered on the SPR approach, to identify cyber-enabled process hazards and to assess and reduce risk in real industrial settings.

Safety Integrity Level Selection: Systematic Methods Including Layer of Protection Analysis This book describes a systematic method for selecting safety integrity levels (SILs) for safety instrumented systems (SISs). The method emphasizes accounting for existing layers of protection, and it ensures that the maximum return on risk reduction investments is achieved. This reference demonstrates the application of quantitative risk analysis techniques and tools to the problem of safety integrity level selection. Essential theory is distilled into a format that the average control systems engineer can quickly apply. This is not a generic theoretical dissertation, nor a comprehensive treatment of the topic of quantitative risk analysis. It is a focused process for applying simple, yet powerful, tools of quantitative risk analysis specifically to the problem of selecting safety integrity levels for safety instrumented systems. Congratulations to Ed Marszal and Eric Scharpf for receiving the Thomas G. Fisher Award of Excellence for a Standards-Based Book Publication for their book Safety Integrity Level Selection: Systematic Methods Including Layer of Protection Analysis!

Safety Integrity Level Selection: Systematic Methods Including Layer of Protection Analysis This book describes a systematic method for selecting safety integrity levels (SILs) for safety instrumented systems (SISs). The method emphasizes accounting for existing layers of protection, and it ensures that the maximum return on risk reduction investments is achieved. This reference demonstrates the application of quantitative risk analysis techniques and tools to the problem of safety integrity level selection. Essential theory is distilled into a format that the average control systems engineer can quickly apply. This is not a generic theoretical dissertation, nor a comprehensive treatment of the topic of quantitative risk analysis. It is a focused process for applying simple, yet powerful, tools of quantitative risk analysis specifically to the problem of selecting safety integrity levels for safety instrumented systems. Congratulations to Ed Marszal and Eric Scharpf for receiving the Thomas G. Fisher Award of Excellence for a Standards-Based Book Publication for their book Safety Integrity Level Selection: Systematic Methods Including Layer of Protection Analysis!