As we have discussed, OSHA does not have a “flammable gas” standard for those flammable gases outside the scope of its Liquefied Petroleum Gas (LPG) standard 1910.110. So in most of my work with flammable gases, I will use 1910.110 or NFPA 58 as my RAGAGEP. I do this as many facilities already have some fundamental understanding of LPG hazards. This all starts with “siting” the storage tank. To make this easier to understand, I love to use WI-OSHA (LNI) standards as they are written in “plain English”. So let’s discuss what our “siting” requirements look like in regards to protecting the storage tank from its greatest risk… BLEVE: