Flammable medical gas supply cylinders located inside of a building must be stored in a...

The storage of flammable medical gas supply cylinders inside a building is regulated by 2021 International Fire Code (IFC) Section 5306 – Medical Gas Systems.

IFC Section 5306.2.1 – Storage of More Than 200 Cubic Feet of Medical Gases:

When the quantity of flammable medical gas exceeds 200 cubic feet, it must be stored in a separate room with a minimum 2-hour fire-resistance rating.

The room must also comply with ventilation and explosion control requirements per NFPA 99 (Healthcare Facilities Code).

Why Other Options Are Incorrect?

A. 1/2-hour – Insufficient fire resistance for high-risk gas storage.

B. 1-hour – Does not meet the minimum 2-hour requirement set by the IFC.

D. 3-hour – Exceeds the minimum required by code; the correct requirement is 2-hour fire-resistive construction.