What should be part of your daily boiler log?

• A. Boiler model and installation date
• B. Fuel supply level and ignition status
• C. Operator name and shift
• D. Stack temp, boiler temp and pressure

Answer: (D)

Daily boiler logs focus on the readings that show how the boiler is actually performing and whether it stays within safe limits. The stack temperature, boiler temperature, and pressure are the key measurements you should record each day because they directly reflect combustion efficiency, heat delivery, and system control.

Stack temperature tells you how hot the exhaust gases are and how effectively the fuel is being burned. If the stack temp is too high, combustion may be incomplete or fuel is wasted; if it’s too low, there could be poor combustion or excessive heat recovery that signals a problem. Keeping an eye on this value helps you spot inefficiencies or unsafe conditions early.

Boiler temperature indicates the actual water or steam temperature inside the boiler. Tracking this shows whether the boiler is delivering the right amount of heat to meet demand and helps prevent overheating or short cycling. It’s a direct read on how well the heat transfer process is occurring and whether the feedwater and boiler controls are doing their job.

Pressure is the other critical parameter because it governs the integrity and operation of the steam system. Staying within the design pressure range ensures safety and proper steam delivery. Deviations can point to leaks, feedwater issues, or control problems that need attention.

Other items aren’t part of the daily operational snapshot. Fixed information like model and installation date doesn’t change from day to day, and fuel supply level or ignition status are more about startup or immediate conditions rather than ongoing performance data. An operator name and shift can be useful for records, but they don’t inform how the boiler is performing.