One of the most often asked questions in my Process Safety training courses is… “What do you mean when you say Layers of Protection?” So I have made this very simplified powerpoint presentation to provide a visual of how “Layers of Protection” are effective and how they BECOME INEFFECTIVE. This safety principle is most often mentioned in process safety circles, but in reality, it applies to our traditional health and safety models as well. Even when we discuss the “Hierarchy of Controls” we are discussing our layers of protection, as in many cases we NEVER rely on one level of control to minimize risks. For example…