What is the minimum storage capacity for a bulk inert gas system, as defined?

The minimum storage capacity for a bulk inert gas system is established to ensure an adequate supply for medical facilities, taking into account the potential demands of patient care and the need for safe and continuous operation of medical gas systems. A capacity of 20,000 cubic feet is specified to meet these requirements effectively, providing a buffer to accommodate various operational needs and demands.

This standard is set to ensure that healthcare facilities can consistently and reliably maintain the necessary levels of inert gas, which is crucial for a range of medical applications. The large volume also helps mitigate the risk of running low on gas, which could interrupt essential services or procedures.

In contrast, the other options represent lesser capacities, which may not adequately support the operational needs of healthcare systems or could lead to increased risk of shortages during peak usage. Thus, the choice of 20,000 cubic feet is aligned with NFPA standards and practical requirements for clinical settings.