exida explains Blog

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 alarm, which is often directly or indirectly caused by nuisance alarms. Poor alarm management has…

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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 manufacturers publish data based on field return data where they classify failures caused by customers…

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“Data is King” – Introducing the Sovereign of Component Reliability Databases
  • by Todd Stauffer
  • Thursday, August 12, 2021
  • Software

“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the drive for digitalization and the Internet of Things the expression “Content is King”, coined by Bill Gates, has now been replaced by “Data is King”.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 where the safety and reliability predictions generated from a Failure Modes, Effects & Diagnostics Analysis…

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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 records (AKA logs).   

Improving compliance in these areas is also a very cost-effective…

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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 you with the opportunity to work with an experienced cyber team here at exida, and…

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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?  

One of the major deficiencies I see while doing certification assessments is…

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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 work with an experienced cyber team here at exida, and the vast knowledge of cyber…

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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 that operator response can be broken into three levels; skill-based behavior, rule-based behavior, and knowledge-based behavior as shown in…

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

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

It’s interesting that I had been preparing a webinar on pipeline safety and security since there have already been numerous incidents reported regarding pipeline accidents and leakage.  Now the latest incident concerning Colonial Pipeline and the ransomware attack by Darkside, a so-called extortion group,…

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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 so many of us doing more things differently during the COVID pandemic, I wonder if…

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Learning From History So We Don’t Repeat It – New Tools

Learning From History So We Don’t Repeat It – New Tools

According to numerous industry studies, significant improvement has been made over the last 20 -30 years in occupational safety, but not so much in operational safety (process safety).  New process safety incidents continue to occur that bear a striking resemblance to previous incidents. This means we are not effectively learning…

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What is SIL (Safety Integrity Level)?
  • by Dr. William Goble, CFSE
  • Thursday, April 08, 2021
  • Certification

What is SIL (Safety Integrity Level)?

The term SIL is rapidly spreading to Request for Proposals (RFP) and purchase requirements in many industries.  But in many of those industries, few have heard about SIL and fewer have a grasp of the fundamental concepts of SIL.  SIL is a term that means Safety Integrity Level. It is used…

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Why Sharing Components Between SIS & BPCS Is Not A Good Idea

Why Sharing Components Between SIS & BPCS Is Not A Good Idea

This is a topic which comes up time and again, especially when reviewing legacy systems.  Although IEC61511 doesn’t preclude the use of shared devices, it does however provide guidance under Clause 11 of what the constraints are.  Even though the Safety Instrumented System (SIS) and Basic Process Control System (BPCS)…

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Strong Safety Culture Translates to Lower Insurance Premiums

Strong Safety Culture Translates to Lower Insurance Premiums

Insurance Companies are hedging their bets through premiums while the Manufacturing Industry is placing their wagers on luck.

The worlds of gambling and insurance are similar in many ways. Both are built upon elements of probability, modeling and quantification of risk. Professional gamblers are well informed on the odds…

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