exida explains Blog

Entries tagged with: Functional Safety

  • by Dr. William Goble, CFSE
  • Thursday, January 12, 2012
  • News

2011…A Year in Review

2012 - Good Progress for Cybersecurity and Functional Safety

I think it is wise for individuals to periodically review things. I like to do my professional review at the end of the year. 2012 was a good year.

Product Certification

Over 60 new products received functional safety or cybersecurity certification this year. Those products and more…

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Dare to Be Different

Dare to Be Different

Define the Safety Function for a Better Certification

When a product is getting certified for functional safety, it is essential to have a clear understanding of the safety function.  First, let’s be clear what is meant by the safety function.  IEC 61508-4 describes a safety function as a “function to be implemented by a safety-related system or…

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Functional Safety and Taxes: Are you an expert?

Today, April 15th, is tax-day in the US.  Ok, the Internal Revenue Service (IRS) has given us a few extra days this year (the tax filing deadline is not until April 18th).

There are a lot of similarities between how you do your taxes and how you handle…

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  • by John Yozallinas, CFSE
  • Wednesday, December 07, 2011
  • Certification

It Ought to be a Crime

There is no shortage of drivers who try to “beat the red light,” or roll through a stop sign.  I see it every day (luckily BEFORE they hit my side door).  Even though everyone knows, or should know the “rules of the road,” there are some folks who are…

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NEVER Use B10 Values for PFDavg Calculations

The machine safety community has defined a number called the “B10 number.”  It is a measure of time where 10% of a population of devices should have failed.  Generally it is a measure of expected end of life or “useful life” as defined by the reliability engineering community.

The…

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  • by John Yozallinas, CFSE
  • Thursday, December 06, 2012
  • Software

Spaces and Braces and Comments – Oh My!

What constitutes a good coding guideline?

Serious software development for functional safety requires a coding standard or coding guideline. Most organizations have one, but how do you know if it’s good?

You need to look beyond the boilerplate and physical code layout that are often defined in a coding…

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  • by Dr. William Goble, CFSE
  • Friday, March 04, 2011
  • Certification

Tales from the Certification Wars - Who certifies the certification agency?

I have often heard the question “Who says they can issue a certification?”  This is often accompanied by “Why can’t I certify my own product?”  “Who knows our design better than we do?” Good questions.

The IEC 61508 standard does not require certified products for Functional Safety. …

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The Evolution of Coding Standards

The Evolution of Coding Standards

Sometimes it seems that things change slowly in the world of functional safety.  If you look at many of the technical references in IEC 61508 you will find that most come from the 1980s and 1990s.  There is even one reference that dates back to 1950!  With the rate…

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The Human Element of Functional Safety (The Challenge)

The analysis of past safety accidents was conducted primarily regionally, and with companies having an “experienced” workforce. Today the global economy is undergoing major shifts in manufacturing which is making the issue of finding, developing, and retaining experienced people more challenging than in the past. In “Brownfield” (developed) areas,…

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Welcome to my world
  • by John Yozallinas, CFSE
  • Sunday, October 02, 2016
  • Certification

Welcome to my world

Sure, you might think I’ve got it made… sitting here on my perch telling you what you need to do to meet IEC 61508, while you sit there with all the work to do.  Well, it wasn’t always that way.  I was in your shoes, responsible for achieving functional…

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  • by Iwan van Beurden, CFSE
  • Tuesday, January 17, 2012
  • Certification

Why am I not on “the list?”

  • by Dr. William Goble, CFSE
  • Thursday, November 07, 2013
  • Certification

Why Innovation in Safety?

In a marketplace where many of buyers of firmly committed to “proven in use,” many projects are still using 30 year-old logic solver designs.  Proven in use is a valuable concept especially for field equipment where it is hard to evaluate how well a product design will…

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“Never tell me the odds”

“Never tell me the odds”

-Han Solo, Star Wars, Episode V: The Empire Strikes Back, 1980

I have enjoyed watching and reading about the actions of the fictional Star Wars character Han Solo over the years.  I recall hearing the above quotation more than once.  And as much as I enjoyed watching this character,…

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