Goble, W.
HP Automation Safety: Who or what is TÜV?
As most individuals involved with automation/ safety systems, I have a few questions: Who is TÜV? What does this name mean? Why is TÜV mostly associated with functional safety certificates f..
HP Automation Safety: What about the valve?
For a long time, the focus of safety instrumented system design has been on the logic solver. For many, including myself, this started when I first heard about a "certified" safety programmable logic ..
Selecting instrumentation for safety instrumented system applications
Follow these guidelines for the most effective and economical installations
HP Automation Safety: IEC 61508 Certification: a standard for all instruments
Recently, I saw a magazine advertisement; it was a common Ogilvy style with the headline "Safety Is Not An Option." This ad was very eye catching for anyone involved in the design and implementation o..
HP Automation Safety: Separation between control and safety
It is pleasure to see that the new ANSI/ISA 84.00.01-2004 (IEC 61511+) standard has been issued. It replaces the now obsolete ISA 84.01-1996. This standard is word-for-word identical to IEC 61511 exce..
HP Automation Safety: CFSE update
In IEC61508, the international standard for functional safety, there are requirements for "Competence of Persons." The general statement from IEC61508 Part 1, Appendix B, reads, "All persons involved ..
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