What is the minimum height of the noncombustible barrier around oxygen storage?

• A. 4 feet
• B. 5 feet
• C. 6 feet
• D. 7 feet

Answer: (B)

Oxygen storage demands extra protection because oxygen supports combustion and small leaks can create a highly enriched environment. A noncombustible barrier provides a sturdy, heat-resistant shield that helps prevent any ignition sources or nearby activity from directly affecting the storage area. The minimum height specified for this barrier is five feet, which strikes a balance between adequate protection and practicality for access. Four feet would not meet the required protection level, while six or seven feet go beyond the minimum but aren’t required unless site conditions demand them.