Auxiliary Boiler (Oil-Fired) · Boilers
Regular maintenance is crucial for ensuring the reliable operation of the Alfa Laval Aalborg AQ-3, a water tube D-type oil-fired marine boiler. This boiler boasts a steam capacity of 3 t/h at a pressure of 7 bar, with a heating surface area of 40 square meters. It features a drum and membrane wall construction, including straight pin tubes and external downcomers. The boiler is designed for efficient oil combustion, though dual-fuel options are available. Maintenance checks should include inspecting the tube body for corrosion, pitting, or deposits, which can cause leaks. Additionally, the water level control system must be regularly checked to prevent overflooding or drying out. Safety valves also need to be tested to ensure proper operation under full load conditions. Regular visual inspections of the furnace walls and refractory lining are necessary to identify any cracks or soot buildup, which can lead to heat loss and instability. Hydrostatic tests and class surveys are essential for maintaining the structural integrity and preventing corrosion on both the water and fire sides of the boiler.
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