Every functional safety engineer encountered the same challenge at some point: selecting the right failure rate data for Safety Instrumented Function (SIF) design calculations. Questions around data accuracy, source reliability, and potential optimism are not just common; they’re critical.
In a recent webinar, Pieter Poldervaart explored what failure rate data actually represents, reviewed the most widely used data sources, and discussed how to evaluate them in alignment with IEC 61511 requirements. By grounding the theory in a practical context, this session’s aim was to help you better understand the role of failure rate data in achieving reliable, compliant SIF designs.
This session also marked the beginning of a broader Cenosco webinar series focused on improving the understanding of key input parameters used in SIF Probability of Failure on Demand (PFD) calculations. Future sessions will cover Beta factors, Test Coverage, Useful Life, MTTR, and more, combining technical clarity with real-world application.
Why should you have attended?
Understanding failure rate data is fundamental to making sound engineering decisions in functional safety. This webinar provided you with the tools to critically assess your data sources, avoid overly optimistic assumptions, and align your calculations with industry standards. By improving how you approach failure rate selection, you can be better equipped to design, operate, and maintain safer systems, while building confidence in your day-to-day decisions.
À qui s'adressait ce webinaire ?
The ”Failure Rate Data: Understanding and Sourcing them for your SIF Designs” session was designed for:
- Functional Safety Engineers working with SIF design and validation
- Reliability and Asset Integrity professionals
- Engineers involved in IEC 61511 compliance and implementation
- Maintenance and inspection professionals supporting SIF performance
- Anyone looking to strengthen their understanding of PFD calculation inputs
Quand ?
Date: Tuesday, April 28th 2026
Time: 16:30 CEST
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Pieter Poldervaart Sr. Domain Expert SIS
Pieter is a functional safety expert with over a decade of experience in the field. Before joining Cenosco in 2021, he worked at Shell P&T, where he served as a LOPA chair and SIF Lifecycle Consultant. At Cenosco, Pieter is the IMS SIS/SIFpro domain expert and tool trainer.
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