Nitrogen Generator (Membrane) · Inert Gas Systems
Mahler AGS Inert Gas Systems. Mahler AGS NITROSWING PSA nitrogen generators produce inert gas (N2 95-99.99%) from ambient air using pressure swing adsorption (PSA) technology with carbon molecular sieve (CMS) adsorbent. Capacity 200-4,000 Nm³/h. Hauptanwendung auf modernen Schiffen (Öltanker, Chemikalientanker) zur Cargo-Tank-Inertisierung (Explosionsschutz, O2 unter 8%). Volla
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| Pre-filter (particulate/coalescing) element replacement | typically 2,000-4,000 running hours or per differential pressure, whichever comes first - confirm against manufacturer schedule |
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| O2 analyzer calibration/check | typically 6-12 months per manufacturer schedule |
| Feed air compressor service (if a dedicated unit) | per compressor manufacturer schedule |
| Membrane module performance check vs baseline | annually |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Achievable N2 purity at rated flow | if purity falls noticeably below the rated level with pre-filters known good, membrane replacement is normally indicated - confirm against manufacturer trend criteria rather than a single low reading |
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Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Where the unit serves a class-required inerting function (e.g. cargo tank inerting), class checks O2 analyzer calibration records, alarm setpoints, and that the required inert atmosphere is maintained - confirm the exact survey scope against this vessel's class notation, since requirements differ between a class-required IG system and a general-purpose N2 generator.
Estimated lifetime: Membrane modules typically run 5-10+ years before replacement with clean, well-filtered feed air; contaminated feed air can shorten this considerably - condition is better judged by purity/flow trend than by hours alone.
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