Do purchasing teams really need to worry about Functional Safety & SIL?

When it comes to complying with the safety standards IEC 61508, IEC 61511 and IEC 62443 for a safety and security project, it is not...

Is it safe? Advice on assessing the suitability of electrical devices for use in a safety instrumented function

When designing safety instrumented functions (SIFs) for a process operation, it is not unusual to find devices such as electrical motors, ...

Calculating the proof test effectiveness for a Partial Valve Stroke Test application

The final element of a safety instrumented function is usually the greatest contributing part of the overall SIF PFDavg calculation. Valv...

Do I really need my SIS to be cyber secure?

In the good old days, most Industrial Automation and Control System (IACS) networks were air-gapped from the business network and the Int...

What do I claim is my Proof Test coverage?

Nowadays many devices are designed with efficient internal diagnostic capabilities. For some smart transmitters the automatic diagnostics...

Do you need to use third party certified software tools when configuring a safety instrumented system (SIS) or SIS devices?

There is always a dilemma for users as to whether it is a mandatory requirement to use a third party certified tool when configuring a saf...

What is the target failure measure for your SIF?

"Which failure measure should I use for my Safety Instrumented Function (SIF)? Is PFDavg or PFH more appropriate?" Unfortunately...