NFPA 490-2002 PDF Download

The NFPA 490-2002 standard is a set of guidelines that specifically applies to the storage of ammonium nitrate in various forms, such as crystals, flakes, grains, or prills. It covers different grades of ammonium nitrate, including fertilizer grade, dynamite grade, nitrous oxide grade, technical grade, and other mixtures containing 60 percent or more by weight of ammonium nitrate.

The standard outlines requirements for storage structures, whether it be storage in containers or bulk storage. It also addresses the separation of ammonium nitrate from potential contaminants. Fire protection measures are covered in a dedicated section, ensuring the safety of the storage facility and the surrounding environment. Additionally, general safety precautions, such as housekeeping and material handling, are discussed in this code.