Most of you know that exida gathers field failure data from many sources including manufacturers’ warranty return data and end user maintenance/failure records. At this point we have nearly 100 billion unit operating hours of data. This is probably the largest process industry data set in the world. And…
exida explains Blog
Entries tagged with: ISA SP84
- by Dr. William Goble, CFSE
- Thursday, September 27, 2018
- Certification
The New Technology in Logic Solvers
I heard about a “safety certified” PLC in the late 1980s at an ISA S standard committee meeting. The “logic solver” (as they later called it) was the focus of attention in the field of functional safety back then. Many engineers even said, “My system is safe because I…