Refrigerant HFO-1234yf is a PSM HHC with “special or unique hazards” (Part 4)

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Parent Category: Safety Info Posts
Category: Chemical Process Safety (PSM/RMP)

OSHA’s PSM standard requires Operating Procedures to address “special or unique hazards”

1910.119(f)(1)(iii) Safety and health considerations:
…
1910.119(f)(1)(iii)(E) Any special or unique hazards.

This item is often not necessary with many of the PSM standard’s Highly Hazardous Chemicals; however, HFO-1234yf has a unique property that falls into this requirement.  HFO-1234yf is…

Comments   

#2 Bryan 2015-08-24 03:24
THANKS Jim
+2 #1 Jim Lay 2015-08-23 23:53
Brian - it would be very difficult to add an oderant that wouldn't "pile up" in nooks and crannies in a refrigeration system causing performance and potentially safety issues. Using mercaptans in natural gas and LPG works well for most uses, but it's tough to duplicate (and there are situations such as new, "fresh" piping, where oderants can be adsorbed and not work well even for NG and LPG!)

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