In high-hazard industries, small assumptions can lead to major consequences. After unpacking failure rates in our first session, Cenosco returns with the second webinar in our SIS mastery series, this time focusing on Mission Time and Useful Life, two critical (and often misunderstood) parameters in Safety Instrumented Function (SIF) design.
Led by Cenosco’s SIS domain expert Pieter Poldervaart, this session goes beyond theory. You’ll learn how these parameters directly influence your Probability of Failure on Demand (PFD) calculations and how to apply them correctly without falling into the trap of overly optimistic or unnecessarily conservative assumptions.
With a practical, real-world approach grounded in IEC 61511, this webinar equips you to design safer systems and make defensible decisions.
This is the second installment in our ongoing SIS webinar series, where we break down every critical input into SIF PFD calculations, giving you clarity where the industry often relies on assumptions.
Why should you attend?
Because getting SIF design “almost right” is not enough.
Mission Time and Useful Life are often oversimplified, or worse, ignored, in PFD calculations. The ‘SIF Design: Mission Time & Useful Life Explained’ webinar will help you understand how to treat them correctly, ensuring your safety functions perform as intended throughout their lifecycle.
Expect to walk away with:
- A clear understanding of how Mission Time and Useful Life impact PFD outcomes
- Practical guidance on applying these parameters in real SIF designs
- Insights aligned with IEC 61511 requirements
- Real-life examples that reflect actual plant conditions
- The confidence to justify your design decisions to auditors, stakeholders, and regulators
Who is this webinar for?
This session is designed for professionals responsible for functional safety and asset integrity, including:
- Functional Safety Engineers (SIS / SIF)
- Reliability & Maintenance Engineers
- Asset Integrity Managers
- Process Safety Engineers
- Engineering Managers involved in SIS design or lifecycle management
- Operators and site personnel responsible for SIF performance and maintenance
When?
Date: Tuesday, June 23rd 2026
Time: 16:30 CEST
Meet our speaker
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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