An older post, with updates…Ever since the 2005 BP Texas City tragedy, refineries and chemical plants have been working diligently to review “facility siting” risks for their facilities. As with all of the PSM elements, many of us took this new focus as a learning opportunity. We had all done something we called “facility siting” in our Process Hazards Analysis, but in the early 1990’s many of us “did not know what we did not know” in regards to what a real facility siting analysis was suppose to look like.