Significant changes impact requirements for industrial and medical gas! The most comprehensive industrial and medical gas storage and use document in the National Fire Codes, NFPA 55 is essential for users, producers, distributors, and anyone who is involved with the storage, use, or handling of compressed gases or cryogenic fluids. This edition expands coverage and incorporates three NFPA Standards as individual chapters: NFPA 50: Bulk Oxygen Systems at Consumer Sites NFPA 50A: Gaseous Hydrogen Systems at Consumer Sites NFPA 50B: Liquefied Hydrogen Systems at Consumer Sites Additionally, the 2005 edition of NFPA 55 includes provisions for underground hydrogen storage and the use of hydrogen generating devices. The allowable storage requirements are coordinated for consistency with the requirements in NFPA 5000