exida explains Blog

Demystifying the Threat Modeling Process

Demystifying the Threat Modeling Process

The thought of tackling a threat model (TM) might not be the most appetizing to some people.   Doing a quick Internet search, someone could get stuck under a mountain of acronyms and terms.  I mean, what…

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Machinery Hazards and Risk Assessment Techniques

Machinery Hazards and Risk Assessment Techniques

Machinery related hazards continue to result in hundreds of deaths and thousands of serious injuries each year. In 2019, 2,963 deaths occurred in the construction, transportation and warehousing, agriculture, forestry, fishing and hunting, and…

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If an Alarm Occurs and the Operator doesn’t Ack it, was it really an Alarm?

If an Alarm Occurs and the Operator doesn’t Ack it, was it really an Alarm?

Similar to the thought experiment “If a tree falls in a forest and no one is around to hear it, does it make a sound?”, we ask - If an alarm is generated, and…

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Measuring Performance – Why Are We Not Doing This?

Measuring Performance – Why Are We Not Doing This?

Part of the changes to the IEC61511 standard in 2016, some five (5) years ago now, was to emphasize the need to do a better job with regards to the Operations and Maintenance phase…

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Can Nuisance Alarms “Break” the Operator?

Can Nuisance Alarms “Break” the Operator?

Study after study finds that something like 80% of industrial incidents (give or take) are caused by Human Error. Incidents involving human error often include a failure of the operator to respond to an…

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FAQ: More Failures with Actuated Valves than what published failure rates indicate?

FAQ: More Failures with Actuated Valves than what published failure rates indicate?

During a recent exida webinar we received the following question:

We tend to see more failures with actuated valves, than what manufacturers published failure rates would indicate! Any reason?

There are several reasons. Some…

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“Data is King” – Introducing the Sovereign of Component Reliability Databases

“Data is King” – Introducing the Sovereign of Component Reliability Databases

With the drive for digitalization and the Internet of Things the expression “Content is King”, coined by Bill Gates, has now been replaced by “Data is King”. This is especially TRUE in functional safety…

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Closing Two Common IEC 62443 Compliance Gaps

Closing Two Common IEC 62443 Compliance Gaps

Two common gaps exida encounters when evaluating vendor compliance against the IEC 62443-4-1, IEC 62443-4-2 and IEC 62443-3-3 standards are:

  1. Inadequate or unclear Security Guidelines.    
  2. A lack of documentation on the security audit…

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Block that attack!  Getting IEC 62443 Cyber Certified (Part 4)

Block that attack!  Getting IEC 62443 Cyber Certified (Part 4)

This is the next in a series of blogs and papers on the benefits of cyber certification. You can read part 1 here , part 2 here, and part 3 here . Certification provides…

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Can Checklists Prevent Human Error?

Can Checklists Prevent Human Error?

Spend Your Product Development Time Wisely

Spend Your Product Development Time Wisely

Want to improve your safety lifecycle and be more compliant with IEC 61508?  Focus on the things that have the most benefit.  Like what?  What are some of these valuable things?  

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Block that attack!  Getting IEC 62443 Cyber Certified (Part 3)

Block that attack!  Getting IEC 62443 Cyber Certified (Part 3)

This is the next in a series of blogs and papers on the benefits of cyber certification. You can read part 1 here and part 2 here.  Certification provides you with the opportunity to…

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Operator Response - the SRK Model

Operator Response - the SRK Model

Understanding operator decision-making is a good first step in improving operator effectiveness. Operator decision-making depends on the person (their level of expertise) and the situation (how familiar). A popular behavioral model from Rasmussen proposes…

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Pipeline Safety and Security – Why are we still not prepared?

Pipeline Safety and Security – Why are we still not prepared?

Safety Application Shortcuts - Do You Really Want to Hurt Me?

Safety Application Shortcuts - Do You Really Want to Hurt Me?

No, you probably don’t want to hurt me.  But if your product is used in a safety application, and my job depends on your product doing its job, will it hurt me if it fails?

With…

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