Who Uses NFPA 99B and Why It Matters 

NFPA 99B provides specialized knowledge integral to industries such as aerospace and defense, medical research, government, military, manufacturing, and engineering. The standard provides critical requirements for designing, building, managing, and maintaining hypobaric facilities where humans are intended to be occupants of hypobaric chambers.

NFPA helps guide professionals such as:

• Testing and inspection technicians

• Facility owners and managers

• Product manufacturers and engineers

• Safety officers and authorities having jurisdiction (AHJs)

About NFPA 99B

Hypobaric facilities are increasing in popularity, but due to their oxygen-rich atmospheres, these systems also carry an increased fire risk. NFPA 99B, Standard for Hypobaric Facilities, addresses the specific hazards inherent to the hypobaric facilities where humans are intended to occupy the hypobaric chamber.

The standard offers the latest provisions for facility design, construction, operation, and maintenance to aid in the recognition of, and protection against, fire hazards as well as hazards of an electrical, explosive, and implosive nature.

Key Aspects and Benefits of NFPA 99B Include: 

• Revised Interior Finish Requirements: Performance-based criteria for chamber interior finish requirements were replaced the prescriptive requirements.

• Revised Chamber Illumination Requirements: Chamber illumination equipment terminology and requirements were updated to reflect industry practices.

• Improved Organization: Requirements were reorganized to make them more user friendly.

• Updated References: References were updated to the most recent editions of other NFPA^® publications.

• Explanatory Information: Emergency response procedures and a practical pressure table are included as supplemental material.

2027

2024 (9781455930555)

2021 (9781455926343)

2018 (9781455916818)

2015 (9781455909018)