What the heck is “partial pressure” and how do I calculate it for my PSM/RMP mixture?
With OSHA’s change last week in how PSM applies to “mixtures” of HHCs I have received a number of questions about “partial pressure” and what impact it can have on whether my process is covered or not? EPA has been using “partial pressure” of 10 mm Hg for their mixture applicability rule since 1999, but…...
