What is the maximum volume of hydrogen gas cylinders allowed for indoor use as per the International Residential Code?

The maximum volume of hydrogen gas cylinders allowed for indoor use, as per the International Residential Code, is 250 cubic feet. This limit is established to ensure safety and mitigate risks associated with the storage and use of flammable gases in residential settings. Hydrogen is highly flammable and can form explosive mixtures with air, which makes it crucial to regulate its storage volume in enclosed spaces to prevent potential accidents.

The code stipulates numerical limits to promote safe practices in residential areas, taking into account factors such as ventilation, potential ignition sources, and emergency accessibility. Using 250 cubic feet as the threshold allows for sufficient operational flexibility while maintaining a focus on safety and community protection.