I’ve been teaching our FSE100 course now for nearly 10 years and it always amazes me that when teaching the course, the number of times I find that end users in the class are not really measuring the performance of their SIS. In most cases, they are doing…
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Entries tagged with: FSE 100
- by exida Webinars
- Thursday, January 19, 2023
- Functional Safety
Are You Measuring the Performance of Your SIS?
- by Steve Gandy, CFSP
- Thursday, August 13, 2020
- Functional Safety
IEC61511 and Failure Rates
Most end users I teach in our FSE100 class are not really aware of or fully, understand when we talk about failure rates. For example, what’s a FIT mean? For those end users more versed in this, they understand what is meant by a FIT. Essentially a device can have…
- by Steve Gandy, CFSP
- Thursday, October 19, 2017
- Functional Safety
Random versus Systematic Faults: What’s the difference?
I saw and responded to a LinkedIn discussion on this very issue, where someone had asked “if I have a misaligned limit switch that fails dangerously, then is it random or systematic? “. This is an intriguing question because many view human error as being systematic and, whereas, this…
- by Steve Gandy, CFSP
- Thursday, November 19, 2020
- Functional Safety
The Dos and Don’t of SIS Application Programming
It’s interesting that the majority of the time when people talk about functional safety, they are usually thinking about hardware: what sensors to use, which logic solver, what actuator, solenoid or valve to select; what voting architecture, etc. What often gets overlooked, initially, is the application program.
Essentially, when…
- by Steve Gandy, CFSP
- Wednesday, January 31, 2024
- Functional Safety
What Does Root Cause Analysis Really Mean?
This is an intriguing question. One that I often ask my classes when I’m teaching our FSE100 Functional Safety course. Very often, they do not know or do not fully understand what this means and why it is important.
The IEC61511 standard requires that any failures that occur within the…
- by Steve Gandy, CFSP
- Thursday, August 24, 2017
- Functional Safety
Why Proof Test Coverage Is So Important For A SIF to Achieve Its Target SIL?
This is a question I often get asked when I’m teaching our FSE100 course on Functional Safety, when we discuss the purpose of Proof Testing and coverage. It’s amazing how many end users assume perfect proof testing (i.e. 100% coverage), that is capable of finding, all the…