News & Events.

exSILentia - Better Risk Management

  January 13, 2021

In a blog, posted today on the ISA Interchange, Iwan van Beurden and William M. Goble describe how the two fundamental concepts of the ANSI/ISA S84.01-1996, the Safety Lifecycle and Probabilistic Performance Metrics, have shaped the functional safety landscape.

“These two fundamental concepts are to this day what is driving the exida long term vision” says Dr. William M. Goble, exida Co-Founder. “Engineering process evaluation is a key focus point part of our certification schema to limit systematic design errors in products. In addition, we spend a significant amount of effort to understand failure mechanisms and failure rate data to judge device suitability for use in functional safety applications.”

“That failure rate data is in turn a major component during Layer of Protection Analysis and SIL verification”, says Iwan van Beurden, exida CTO and Director of Product and Service Development. “When we developed the exSILentia® Safety Lifecycle tool, the Safety Equipment Reliability Handbook database was an integral part of it from day 1. Expanding the tool to cover other tasks in the safety lifecycle including Process Hazard Analysis and Operational Event Recording have allowed our customers to improve their risk management “

The exSILentia® software has been on the market for over 20 years with continuous improvements and introduction of new features to improve overall risk management. The Safety Equipment Reliability Handbook (SERH) has become the go to resource for failure rate information that is applicable to the process industry. For more information visit or contact exida.