A permit is required for storing flammable gas in excess of how many standard cubic feet?

A permit is required for storing flammable gas in excess of 400 standard cubic feet (scf) due to safety regulations that aim to minimize the risks associated with large quantities of flammable materials. When storage exceeds this threshold, it indicates a significant potential hazard; therefore, regulatory measures are in place to ensure that proper safety protocols, containment measures, and emergency response plans are implemented.

These regulations help mitigate potential dangers such as explosions, fires, or gas leaks in environments where there is a high concentration of flammable gases. By enforcing a permit requirement at this volume, it allows the authorities to monitor and control the storage and handling of these materials, ensuring compliance with safety standards and protecting both people and property in the vicinity.