Chemical Process Safety (PSM/RMP)

FM Global’s NEW Data Sheet shares Loss Histories related to Ammonia Refrigeration Processes

FM Global, my absolute favorite source of RELIABLE and FREE safety information has published a new Data Sheet titled 7-13 Mechanical Refrigeration.  This data sheet and hundreds more are available for FREE (after a very brief registration) to anyone.  A truly MUST have for any safety professional working in an industrial environment!  In their new Data Sheet, 7-13 Mechanical […]

Documenting the “isolation” of a Permit-Required Confined Space

To continue with my series of LOTO articles this month, I want to discuss how 1910.147 plays into our efforts to enter a Permit-Required Confined Space (PRCS).  Way too many PRCS entry permits have the basic check-the-box statement “All energy sources isolated – YES/NO.”  What the heck is that supposed to meet?  Do our “machine

OSHA’s General Duty Clause and RV’s “discharging to a safe location”

Anyone who has worked with ASME/API pressure vessel codes knows the basic language used to describe Relief Valve (RV) discharge locations… “discharge to a safe location”.  This requirement applies to ALL relief devices on all types of equipment and although OSHA does not have a specific standard on relief devices and their design, they will use

Ammonia release leads to flashfire and destruction of electrical inside conduit

I read a lot of OSHA case files and sometimes I find the narrative very interesting.  This one, I found to be darn near impossible to have occurred as written… At approximately 2:30 p.m. Employee #1’s coworker, a refrigeration technician, was troubleshooting a compressor shutdown and opened a valve which vented anhydrous ammonia into Engine Room #3.

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