What is defined as a low pressure, vacuum-insulated vessel containing gases in a liquid form?

The definition of a low pressure, vacuum-insulated vessel containing gases in a liquid form corresponds to a container designed specifically for storing cryogenic gases. Cryogenic vessels are engineered to maintain low temperatures and provide insulation to keep gases like oxygen or nitrogen in liquid form for efficient storage and transportation.

In the context of medical gas storage, these containers play a crucial role in ensuring that the gases remain in their liquid state until needed for use, facilitating safe and efficient delivery to various medical applications. The term “container” captures the essential function of holding these gases under low pressure in a vacuum-insulated environment, allowing for optimal performance and safety standards as outlined in NFPA regulations. Thus, this definition appropriately encompasses the type of vessel described in the question.