When placing a boiler in service, what is required of the operator?

The requirement for the operator to be in constant attendance is based on the need for immediate monitoring and response to the operating conditions of the boiler. Boilers are critical components in many industrial and commercial processes, and they can pose significant safety risks if not properly supervised. By ensuring that an operator is present at all times during operation, potential issues such as pressure fluctuations, equipment malfunctions, or safety hazards can be addressed swiftly to prevent accidents or equipment failure.

In many regulatory frameworks, the presence of an operator is required not just for monitoring but also for maintaining adherence to safety protocols and operational guidelines. This reduces the risk of incidents that could arise from unattended equipment, ensuring operational integrity and safety for both the facility and personnel.

While the other options may be important in certain contexts—such as a checklist for startup procedures or the importance of certification—the critical element emphasized here is the constant oversight by an operator to ensure safe and effective boiler operation.