NFPA 99B-2021 PDF Download

The NFPA 99B-2021 standard aims to minimize the risks associated with the use of hypobaric systems by addressing the specific hazards related to these oxygen-enriched atmospheres. Originally developed in response to the increasing use of hypobaric therapy in healthcare facilities and for space and air flight, the standard provides provisions for the design, construction, operation, and maintenance of hypobaric facilities.

This edition of the standard includes updates based on the latest industry knowledge and practices. Some of the key changes include the coordination of chamber construction language with NFPA 99, the requirement that electrical equipment installed in hypobaric chambers must be listed to comply with materials for plenums, and updated references to current codes, standards, and publications.

The standard also offers additional annexes that provide valuable information on hazard nature, emergency response procedures, and a pressure table that can be used for hypobaric facility work. Architects, designers, facility staff, safety directors, and maintenance professionals can reference NFPA 99B for critical building and life safety criteria to ensure compliance with the standard and help safeguard hypobaric facilities.