How should the changeover from one header to another in a gas cylinder manifold system be signaled?

The changeover from one header to another in a gas cylinder manifold system should be signaled through a local signal with an alarm because this method ensures that personnel are immediately aware of the transition. An alarm alerts staff to a change in the gas supply status, which is critical for maintaining continuous service without interruption. It provides an audible or visual cue that is crucial during operations, especially in environments where reliable gas supply is essential for patient care or other operations.

Local signaling through an alarm system enhances safety by allowing timely response to any issues that may arise, ensuring that operators can take action if there is a malfunction or if monitoring needs attention. This method is more effective than relying solely on physical inspections or manual notifications, which may not be as timely or reliable, especially in high-pressure situations. Digital monitors, while useful for providing real-time data, may not provide immediate alerts in the same way an alarm would, making them a less effective standalone signaling method during a changeover.