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When we claim alarms as "safe guards" in our PHA PDF Print E-mail
Safety Info Posts - Chemical Process Safety (PSM/RMP)
Written by Bryan Haywood   
Sunday, 16 September 2012 11:10

I have referenced these writers before when discussing process safety and once again they communicated the message better than I could regarding how we should analyze "process alarms" when we claim them to be a layer of protection.  We should only accept alarms that have been established using a RAGAGEP in their design (audible, visual, human machine interface (HMI), and response times).  Here is their more in-depth analysis...

  http://www.isa.org/InTechTemplate.cfm?template=/ContentManagement/ContentDisplay.cfm&ContentID=78986<;/object>

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