Which operating condition is critical for a licensed operator on watch?

The critical operating condition for a licensed operator on watch is ensuring their physical presence in the boiler room. This requirement stems from the need for continuous monitoring of the boiler and associated systems to maintain safe and efficient operation. Being physically present allows the operator to immediately respond to any alarms or unusual conditions that may arise, such as pressure or temperature fluctuations, which could indicate potential hazards.

The operator's presence is vital for real-time decision-making and to take prompt action if an emergency occurs. Regular logging of temperatures, providing maintenance updates, and testing safety devices are also important responsibilities, but they cannot replace the need for an operator to be in the boiler room to oversee operations actively. The essence of effective watchkeeping relies on the operator's ability to observe, react, and ensure that all systems function safely and efficiently, which underscores the importance of being physically present in the boiler room at all times.