Which of the following is required for the operation of high-pressure boilers?

For the operation of high-pressure boilers, having a licensed operator is essential. High-pressure boilers can operate at steam pressures above 15 psi, and their complexity demands a specialized understanding of boiler systems, safety protocols, and state regulations. A licensed operator is trained to manage the operational requirements, ensure proper maintenance, and respond effectively to any abnormalities or emergencies that may arise during the boiler’s operation. This licensing reflects the knowledge and competency necessary to safely and efficiently operate such equipment, thereby helping to prevent accidents and ensure compliance with safety standards.

While the other options touch on important aspects of boiler operation and maintenance, they do not supersede the necessity of having a licensed operator present. Regular maintenance checks, for instance, are crucial for ensuring the longevity and efficiency of the boiler, but these checks are typically performed by authorized personnel, which underscores the need for a licensed operator's presence during operation. An annual report to the state could be part of regulatory compliance, and having a certified technician on-site adds another layer of safety. However, without a licensed operator actively managing the high-pressure boiler, adherence to safety regulations and effective operation cannot be assured.