Auxiliary Boiler (Oil-Fired) · Boilers
Alfa Laval Aalborg-EH-3000 electric heated hot water boiler (electric heated boiler, 3 MW). Heating output 4200 kg/h, design pressure 10 bar, weight 6500 kg. Electric-only marine boiler for shore-power and hybrid applications.
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| Boiler water treatment dosing/chemistry check | weekly to monthly per the planned maintenance system |
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| Safety valve function test | typically every 3-6 months, full lift test annually |
| Heating element inspection | annually or at the next internal opportunity |
| Internal cleaning/descaling | per water quality trend, typically annually |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Element insulation resistance | commonly expected to remain above roughly 1 MOhm when cold - confirm against the boiler's electrical maintenance manual |
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Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Auxiliary boilers, including electric-heated types, are typically subject to periodical internal/external survey and safety valve testing under the class boiler survey regime; water treatment records are commonly reviewed at survey.
Estimated lifetime: Electric immersion heating elements in marine boilers of this type typically last several years to over a decade in service depending on water treatment quality and duty cycle - failure is usually scale- or water-chemistry driven rather than tied to a fixed running-hour figure.
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