Final answer:
The boiler operator must first check the water level on all boilers on the line through the water column and gauge glass, the boiler room log, the fuel oil supply, and the bottom blowdown valves when taking over a shift.
Step-by-step explanation:
When taking over a shift, the boiler operator must first check the water level on all boilers that are on the line. This is typically done by blowing down the water column and gauge glass to ensure accuracy of the water level readings.
The operator must also check the boiler room log, which provides a record of what has occurred during the previous shifts, as well as monitor the fuel oil supply to ensure continuous operation. Regular inspection of the bottom blowdown valves is also important to prevent sediment from accumulating, which could affect the boiler's efficiency and safety.
Proper maintenance and operation of a boiler system involve considering safety features in case of any malfunctions, such as a loss of coolant accident. This includes having auxiliary cooling water and pumps available as a contingency. These safety measures ensure that the boiler system operates safely, preventing any possible damage due to overheating or other system failures.