I'm taking a stance, and publicly telling you my vision on the issue of separation and integration for safety and control.  When this happens, is still up to debate. I believe that one day it will only take one control system to automate your critical process.  That's right, there will be day where it is commonly ...

So you’re faced with the question of whether that trusty old transmitter you’ve been using as part of your safety shutdown system can meet the “prior use” requirements described in Section 11.5.3 of ANSI/ISA-84.00.01-2004 (IEC 61511-1 Mod).  Prior use, or Proven-in-use, is defined as a documented assessment showing ...