IG Scrubber/Dryer · Inert Gas Systems
Alfa Laval Inert Gas Systems. Alfa Laval is the market leader in inert gas generation for maritime tanker vessels. The Smit Combustion system is a low-pressure combustion-based IGS using the patented Ultramizing® technology to produce soot-free inert gas with oxygen content 2-4%. Capacity range: 1000-20,000 m³/h at 0.15-0.25 bar(g). System includes combustion generator, cooler/
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| Oxygen analyzer calibration | typically monthly or per maker's schedule, and before each cargo operation requiring IG |
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| Deck seal water level/heater function test | typically monthly, with a watch-level check during IG use |
| Scrubber nozzle inspection | typically every 3-6 months or at drydock, depending on fuel sulphur content and running hours |
| Blower bearing lubrication/vibration check | typically every 500-1,000 running hours per maker's schedule |
| Non-return valve/deck seal overhaul | typically annually or at drydock |
| Deck seal water level | maintain within the maker's marked working range - low level triggers alarm/trip; confirm the exact setpoint in the vessel's approved manual |
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Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Inert gas systems are subject to specific SOLAS/class survey requirements including oxygen content verification, deck seal function test, and non-return device testing; O2 analyzer calibration and system function test records are commonly checked at annual and renewal surveys.
Estimated lifetime: Major mechanical components (blower, combustion chamber) commonly remain in service 15-20+ years with scheduled overhaul; sensors such as O2 analyzer cells and pH probes are consumables typically replaced every 1-3 years.
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