exida explains Blog

An Integrator’s Guide to Managing the Cybersecurity Risks of Remote Access

An Integrator’s Guide to Managing the Cybersecurity Risks of Remote Access

Alarm Shelving - Relieve the Symptoms of Nuisance Alarms and Create a Peaceful Control Room

Alarm Shelving - Relieve the Symptoms of Nuisance Alarms and Create a Peaceful Control Room

In an ideal world, every alarm in a process control system would indicate a malfunction or abnormal condition that required operator action. In the real world, alarms that are irrelevant or annunciate excessively—otherwise known as nuisance alarms—can pop up…

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Do you know your Site Safety Index?

Do you know your Site Safety Index?

There’s a lot that exida does behind the scenes to advance the industry and benefit you. We try to make sense of data that we collect and put it to good use. One thing we found is that human activities play a…

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IEC 62443 : The Road to More Secure Products

IEC 62443 : The Road to More Secure Products

As the incidence of cybersecurity threats in automation systems continue to rise, the automation world continues to grapple with how to address these issues.  There are many good practices published in the IEC 62443 series of standards available to…

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Burner Management Systems (BMS) and IEC 61511

Burner Management Systems (BMS) and IEC 61511

Prescriptive BMS standards contain a wealth of knowledge on combustion hazards, unit sequence of operation, and the equipment configuration required for combustion safeguards and combustion control. This experience cannot be overlooked; there is just not a Safety Lifecycle to…

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IEC 62443: Levels, Levels and More Levels

IEC 62443: Levels, Levels and More Levels

By now we’ve all become familiar with safety integrity levels (SIL), as they have become part of our everyday lives. However, with the recent release of several cybersecurity standards in the IEC 62443 series, things are getting…

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How Does the IEC 62443 Cybersecurity Standard Apply to Integrators?

How Does the IEC 62443 Cybersecurity Standard Apply to Integrators?

The IEC 62443 series of cybersecurity standards include over ten documents covering various subjects. Buying a full set is a bit expensive, but for me the real cost is the time needed to read and understand them.…

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Fake Fact: Diagnostics are useless

Fake Fact: Diagnostics are useless

The idea that diagnostics are useless contradicts everything I’ve ever learned and taught about diagnostics. 

Diagnostics help identify problems. Diagnostics can turn a fault that is unrevealed during normal operation into a detected fault, which allows me to take…

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Functional Safety Assessment of Valve Assemblies (Part 2)

Functional Safety Assessment of Valve Assemblies (Part 2)

In Part 1, I covered the emerging trends in the valve assembly market, how these trends relate to IEC 61511 requirements, and the anatomy of final elements.

Now let’s discuss why we need to show requirements traceability down…

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Do You Measure the Performance of Your SIS?

Do You Measure the Performance of Your SIS?

Does Everyone Really Ignore Failure Rates?

Does Everyone Really Ignore Failure Rates?

Fake Fact: IEC 61508 Does Not Affect Me As an End User

Fake Fact: IEC 61508 Does Not Affect Me As an End User

Though this is largely true, I want to discourage people from completely ignoring the good things that IEC 61508 does for the end user.

IEC 61511 is the process industry functional safety standard derived from IEC 61508. In the…

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MISRA Compliance Static Analysis Results for a Real-world Automotive Project

MISRA Compliance Static Analysis Results for a Real-world Automotive Project

Splint is offering to present a “special reward” to the “first person to produce a real program that produces no errors with strict checking.” Here’s a summary of a recent real-world automotive project attempting this.  

TL;DR: We were not successful, but we learned a few things about MISRA…

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Which FSAs Do I Have to Perform?

Which FSAs Do I Have to Perform?

The new release of IEC61511:2016 has caused some confusion when it comes to the Functional Safety Assessments (FSAs). Which ones are mandatory?

The confusion comes from the wording in the standard and the clarifications in the notes. The relevant…

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Dreaming of a Better Tomorrow?

Dreaming of a Better Tomorrow?

When I was a kid, I liked watching the Jetsons.  I felt certain that by the year 2000 we’d all be enjoying those flying saucers and futuristic homes.  Imagine my disappointment that in 2018 we still drive on 4…

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