IG Generator 8000m3h O2<3% flue gas
Air Products Marine Inert Gas Systems. Air Products is the market leader for marine nitrogen/inert gas generators with over 1,800 systems on ships worldwide (of which 90% of the LNG fleet). The systems use two complementary technologies: hollow fiber membrane separation (4+ decades of proven marine experience) and Pressure Swing Adsorption (PSA) with carbon molecular sieve (CMS). Both ver
Components & Design
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Technical Data
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Common failures & inspection points
Visual inspections for cracks/breakthrough; perform pressure drop test; check CMS powder degradation (replacement required if degraded). Membrane systems: check airflow distribution
Calibrate online O2 analyzer (annual cycle recommended); test N2 purity and compare against baseline; if < 95%, diagnose molecular sieve/valves/control system. Check alarm thresholds
Every 3 months: perform inspections. Replace compressor oil, air filter (5µm pre-filter), oil filter, lubricating oil according to manufacturer's schedule. Check piston rings/cylinders for wear. Check cooling system
Inspect pipes/components for contamination; if contaminants found, clean before installation/restart. Check pressure tank internally for cleanliness. Perform leak test before start-up. Check seawater cooler for corrosion/salt deposits
PSA systems annually: inspect valve seats and seals wear; if leaking (leakage between adsorption beds reduces separation efficiency), perform replacement. Check regulation valves for smooth response
Analyzer replace every 2 years or per manufacturer recommendation. Perform annual calibration cycles (verify automated calibration). Perform alarm function tests. Verify calibration gases (span/zero)
Type-general inspection and maintenance points for this equipment category — not model-specific.
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