News & Events.
exida Presenting at International Applied Reliability Symposium
April 26, 2016
Dr. William Goble, exida managing director will be presenting at the 2016 ARS North America, which will be held June 21-23, 2016 in San Diego, CA, USA. The presentation is titled “Functional Safety Analysis of Safety Instrumented Functions with Automatic Self-Diagnostic Capabilities.”
Many industries, such as power, transportation, manufacturing, refineries and pharmaceuticals, use Safety Instrumented Systems (SIS) to mitigate the effects of hazards common in industrial processes. Assessing the safety performance of the SIS to determine if it meets the requirements of national and international safety standards is the purview of the area known as "functional safety." Functional safety encompasses all of the fundamentals of reliability and availability analysis but extends these concepts to include recognition of two separate failure states (fail safe and fail dangerous) and assessment of the impacts of the frequency of self-diagnostics versus frequency of demands.
For individuals already familiar with the basics of reliability/availability analysis, this presentation will provide fundamental understandings both of functional safety modeling/analysis and of the advanced topic of modeling/analyzing the impacts of SIS self-diagnostics in low and high/continuous demand environments. Specifically, an introduction to functional safety is presented, primary performance metrics are developed, and the values they must attain for safety certification are explained. Computation of these metrics via a simple Markov model is illustrated and the impacts of SIS self-diagnostic cycle-times versus demand frequency are considered. All concepts are illustrated using the most commonly implemented architecture (1oo1), which represents approximately 70% of all deployed SIS.
When: Tuesday, June 21, 2016
Time: 1:00pm – 2:00pm
Location: Red Room – Session 3