Daily inspections of industrial boilers are a crucial means of promptly identifying malfunctions, eliminating potential hazards, and ensuring safe operation. Many people are unsure of what to check during these inspections, which can lead to overlooking critical components and allowing potential hazards to escalate. Below is a summary of the core elements of daily industrial boiler inspections—these are essential to memorize; follow this checklist, and you won’t go wrong.
I. Operating Parameter Inspection: During daily inspections, closely monitor the boiler’s pressure, temperature, water level (for steam and hot water boilers), and thermal oil level (for thermal oil boilers) to ensure these parameters remain within normal ranges. If any abnormalities are detected, make adjustments promptly to prevent malfunctions such as overheating, overpressure, or low water levels.
II. Combustion System Inspection: Check the burner’s operating condition; observe whether the flame is stable and combustion is complete, and look for abnormalities such as black smoke or unusual noises. Inspect the fuel supply to ensure it is sufficient, stable, and meets quality requirements. Check the operating condition of the grate (for coal-fired and biomass boilers) for issues like jamming or misalignment, and promptly remove ash and slag from the grate.
III. Circulation System Inspection: Check the operating condition of the circulation pumps (for thermal oil boilers and hot water boilers) for abnormal noises, overheating, or leaks, and ensure smooth circulation; inspect the condition of the piping for leaks, vibrations, or damage, and verify that pipe joints are properly sealed; check the open/closed status of valves to ensure they operate smoothly, seal properly, and show no signs of leakage.
IV. Safety Device Inspection: Inspect safety devices such as safety valves, pressure gauges, and thermometers to ensure accurate readings and normal operation; verify that the lead seals on safety valves are intact, manually vent the safety valves periodically to check for proper pressure relief; inspect the water level gauge (for steam boilers) to ensure it is clear and unobstructed, and flush it periodically to ensure accurate water level display.
V. Flue Gas Treatment System Inspection: Check the operating status of induced draft fans and forced draft fans for abnormal noises, overheating, or leaks, and verify that airflow is normal; inspect the operating status of desulfurization and denitrification equipment to ensure parameters meet requirements and check for leaks or blockages; inspect the flue for obstructions, leaks, or ash buildup.
VI. Environmental and Safety Inspection: Check the ventilation in the boiler room to ensure it is adequate and prevent the accumulation of fuel gas or flue gas; inspect the boiler room for flammable and explosive materials—their storage is strictly prohibited; verify that firefighting equipment (fire extinguishers, fire hydrants, etc.) is in good condition and fully operational; ensure that operators’ personal protective equipment is complete and worn properly.
VII. Inspection Records: After each inspection, maintain detailed records of the inspection findings, including operating parameters, equipment status, identified issues, and corrective actions, to facilitate subsequent troubleshooting and analysis. If any major safety hazards are discovered, report them promptly to the relevant supervisor, shut down the boiler, and take corrective measures.
Note: Daily inspections must be “comprehensive, thorough, and timely.” Inspections must be conducted at least twice daily, with particular attention paid to critical areas (safety accessories, combustion system, and circulation system) to prevent any potential hazards from being overlooked and to ensure the safe and stable operation of the boiler.
