exida UK Webinars

Final Element Proof Tests

29 August 2019

The more extensive the test, the higher the Proof Test Coverage. An exSILentia use case.

A periodic functional test of the components in Safety Instrumented Functions is necessary to ensure the appropriate safety integrity is maintained. The effectiveness of the test is accounted for in the proof test coverage. How can one easily account for these different levels of testing? This webinar will show how proof test coverage impacts the calculated average probability of failure on demand as well as how a user of the exida exSILentia software can easily account for the different levels of testing using the SILver module.


Session: 10:00 - 11:00 AM

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Session: 4:00 - 5:00 PM

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About the Presenter:

Iwan van Beurden, CFSE

Iwan van Beurden Iwan van Beurden, CFSE is the Chief Technology Officer, Director of Product Development at exida. He supports exida’s end-user services, exida’s manufacturer services, and exida certification activities. He has over 20 years of professional experience in the Functional Safety field. Mr. van Beurden is responsible for the development, maintenance, and certification of the exSILentia® integrated Safety Lifecycle tool and associated products. Mr. van Beurden also performs IEC 61508 development support, Functional Safety Assessments, and a variety of reliability analyses. He supports all safety lifecycle tasks, ranging from the Process Hazard Analysis, Layer of Protection Analysis, SIL Selections, and SIL Verifications, to proof test specification and operational event recording. Mr. van Beurden also performs process gap analyses to determine the level of effort companies need to undertake for compliance with IEC 61508 or IEC 61511. He gives training for exida and is also an ISA fellow and instructor. Mr. van Beurden previously worked for Yokogawa Industrial Safety Systems in Apeldoorn, the Netherlands. He worked both in the R&D and in the Operations department as a Safety Assessment specialist. He was involved with the implementation of IEC 61508 within Yokogawa Industrial Safety Systems dealing with SIS reliability calculations and the safety education of engineers. Mr. van Beurden is a Certified Functional Safety Expert (CFSE) and a member of ISA. He has published various papers and magazine articles. He holds a Master of Science degree from Eindhoven University of Technology in Eindhoven, the Netherlands, where he majored in reliability engineering and graduated cum laude.