SIS ENGINEERINGFSA Stages - What They Are and Why We Do ThemA Functional Safety Assessment (FSA) is defined by the IEC 61511 standard as an “investigation, based on evidence, to judge the...
SIS ENGINEERINGDon’t Dismiss Stage 4 of an SIS Functional Safety Assessment! The 2nd edition of IEC 61511 now requires – by use of the word “shall” – that a Stage 4 Functional Safety Assessment (FSA) be conducted...
WHITEPAPERSDoes Your Facility Have the Flu? Use Bayes Rule to Treat the Problem Instead of the SymptomIs our industry addressing the problems facing it today? We idealize infinitesimally small event rates for highly catastrophic hazards,...
WHITEPAPERSLessons Learned on SIL Verification and SIS Conceptual Designby Richard E. Hanner & Ravneet Singh There are many critical activities and decisions that take place prior to and during the Safety...
PROCESS SAFETYThe use of Bayesian Networks in Functional SafetyFunctional safety engineers follow the ISA/IEC 61511 standard & perform calculations based on random hardware failures. These result in...