Back in December 2017, I wrote about a change in the Anhydrous Ammonia fertilizer industry that would most likely require the industry to perform an MOC and PSSR. (A new grade of anhydrous ammonia fertilizer means a MOC, PSSR, etc.) Now that the product has received its official approval and has found its way into the industry, we have learned even more about these additives and how they will impact “process safety”. Manufacturers and providers of these new nitrogen stabilizers have agreed that these additives will not affect the mechanical integrity of the NH3 process; however, adding this material to the NH3 is undoubtedly a “change” that must be evaluated. As shown in the video below from Koch Agronomic Services, there are many factors to consider in this “change”. In this article, I will identify, at a minimum, the matters that need to be addressed based on my limited exposure to facilities using these stabilizers.