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 ...

 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 ...

Sorry for my absence last week, I was attending the 2007 Siemens Automation Summit, or as I tried to call it SAS.  Okay, I admit, that was a poor attempt to jump on the TLA (three letter acronym) bandwagon as Honeywell did with their annual user group (or HUG) which happened to be held the same week.  While I had envisioned BLOGGING ...