What is a distinguishing feature of a Level 3 piped gas system?

A Level 3 piped gas system is designed with patient safety as a top priority, allowing for gas interruptions without posing a risk to patients. This feature is critical in medical settings where an uninterrupted supply of medical gases is vital for patient care. The ability for gas interruptions means that if maintenance or emergency procedures need to take place, patients can be safely transitioned to alternate sources or systems, reducing the likelihood of adverse effects.

In contrast, the other choices do not accurately represent the distinguishing features of a Level 3 piped gas system. While high-pressure delivery is important for certain gases, this is not unique to Level 3 systems, nor does it encompass the core purpose of ensuring safety during interruptions. The focus on vacuum systems is also too narrow since Level 3 systems manage a range of medical gases. Continuous monitoring, while critical in many gas delivery contexts, is not exclusively required for Level 3 systems, making safety during interruptions a unique and defining characteristic instead.