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 ...

 Have you had a chance to catch Bill Goble’s Hydrocarbon Processing (October 2007 issue) editorial titled “Still not using a safety PLC?” Essentially Bill addresses the question of whether you can use conventional equipment (PLC or DCS) in compliance to ISA 84.00.01-2004 (IEC 61511 Mod.)? I think he did a nice job ...