The most common RAGAGEP for pipe labeling is ASME A13.1, Scheme for the Identification of Piping Systems. It is referenced in dozens of hazardous material codes, from ICC to NFPA. In the ICC codes, specifically the International Fire Code (IFC), there is an interesting twist to the requirements for “Compressed Gases (Chapter 53). ASME is mentioned as the RAGAGEP of choice to follow, but then the code goes on to list WHERE labels must be applied. 99% of this verbiage is the same as we will find in A13.1, except for this little nugget (which is no longer stated in A13.1)…