I have spent my career working with flammable liquids, and those who have followed my writings on the topic understand why I have stopped using 1910.106 as my baseline flammable liquid safety standard and instead began using either the IFC or NFPA 30. I have been involved in several serious events where atmospheric storage tanks had been “manifolded” together (oftentimes for reasons unknown to facility personnel). OSHA’s 1910.106 does NOT prohibit manifolding tank vents to a common discharge location; it merely provides minimum design for manifolding vents…