exida explains Blog

Entries tagged with: Safety Certified

  • by Dr. William Goble, CFSE
  • Thursday, August 04, 2011
  • Certification

Not Perfect? Not Good

Over the years I have heard good ideas rejected. We have all done this and observed others doing the same. As far as safety equipment, I recall when the first safety certified pressure transmitter, the Moore 345, was released to the market.  Several potential customers said “it doesn’t…

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  • by Dr. William Goble, CFSE
  • Tuesday, June 07, 2011
  • Certification

The Weakest Link

One of the objectives of new performance based standards like IEC 61508 is to allow performance metrics (like PFDavg for low demand systems) to identify the weak links in any proposed design.  Obviously, it is not necessary to put effort into design and spend money on areas…

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