OSHA may use its General Duty Clause (GDC) to require employers to install oxygen monitors in areas where inert cryogenics are stored or used. But I like to use codes/standards (e.g., RAGAGEPs) to guide my safety engineering for these hazardous processes, even though PSM/RMP does not cover them. To do this, I turn to the International Fire Code (IFC) applicable to my state. Here is the language from the IFC regarding Inert Cryogenics, but this code references the standard where the actual requirement resides…