IG Scrubber/Dryer

medium 24 models total

The scrubber and dryer sit between the inert gas generator and the tank main, and their only job is to take flue gas that is hot, wet and full of sulphur compounds and hand the deck seal something cool, dry and clean enough not to corrode the cargo tanks it protects.

Read more — IG Scrubber/Dryer explained ▾

What the scrubber/dryer stage does within an inert gas system

Raw flue gas from a combustion-type or dedicated inert gas generator arrives at roughly 250-350°C, carrying soot, sulphur dioxide and moisture. None of that can go straight into a cargo tank: the heat would damage tank coatings and seals, the SO2 combines with water to form corrosive sulphurous acid, and excess moisture raises the risk of condensation inside the tank. The scrubber tower washes the gas with sea water to cool it and strip out particulates and much of the SO2; a downstream demister or dryer stage removes the water droplets the scrubbing process itself introduces, so the gas leaving for the deck seal is both cool and reasonably dry.

Inert gas scrubber and dryer — Cross-section of an IG scrubber/dryer tower: flue gas enters low, rises through a seawater spray section and a demister pad, and leaves cooled and dried at the top while wash water collects in the sump and drains overboard.

Main components

Scrubber tower and spray system

A packed or spray-tower vessel where sea water is sprayed counter-current to the rising flue gas, typically dropping gas temperature to within a few degrees of the sea water temperature while washing out soot and dissolving sulphur dioxide. Spray nozzles and packing material are the main wear items, since they sit in a continuous stream of acidic, particulate-laden water.

Demister / dryer section

Mesh pad or vane-type demisters strip entrained water droplets from the gas before it reaches the blower and deck seal. Some systems add a separate drying stage to reduce moisture further, since a wet gas stream promotes corrosion all the way along the deck main to the tank.

Effluent and drain system

Scrubber wash water, now acidic and carrying soot, is discharged overboard through a dedicated effluent line, subject to its own discharge criteria distinct from oily water separator effluent.

Regulations and class

The IG system as a whole, including the scrubber, falls under SOLAS Chapter II-2 requirements for inert gas on tankers, and IACS unified requirements set performance criteria for oxygen content and gas quality leaving the plant, typically requiring the system to reliably deliver gas with oxygen content at or below 5% by volume. Scrubber effluent discharge is addressed under MARPOL, and class surveys check the scrubber's ability to actually cool and clean the gas to specification, not just that the plant runs.

Typical faults

Fault	Consequence
Scrubber spray nozzles blocked or worn from continuous acidic flow	Poor gas cooling and washing, letting hot, sulphur-laden gas through toward the deck seal
Demister pad fouled with soot and salt buildup	Wet gas carries over to the deck main, accelerating corrosion of piping and valves
Sea water supply pump undersized or fouled strainer restricting flow	Inadequate cooling raises delivered gas temperature above design limits
Effluent line partially blocked with accumulated soot sludge	Back-pressure in the scrubber disturbs the water level and gas flow through the tower

Typical wear and inspection points

Spray nozzle condition and coverage pattern, checked visually whenever the tower is opened.
Demister pad cleanliness and pressure drop across the section, an early indicator of fouling before gas quality actually suffers.
Internal coating and corrosion condition of the scrubber shell itself, since it runs permanently wet with acidic water.
Level control and drain valve operation, since a flooded or dry scrubber both disrupt gas flow to the deck seal.

What to look for in a supplier

Materials of construction suited to continuous acidic sea water service — coating specification matters as much as vessel size.
Spare nozzle and demister pad kits sized to the specific tower model rather than a generic fit.
Documentation supporting the gas quality performance the system is expected to deliver, for class renewal.

Track the pressure drop across the demister over time rather than waiting for a gas quality alarm — a rising differential is the earliest warning that fouling is building up before it starts letting wet gas through to the deck seal.

Inspector Mode Show All 24 total

4 manufacturers · 24 models

Alfa Laval

IG Scrubber/Dryer 2000m3h

Capacity (m³/h)

2000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Oxygen Output Range: 2-4% O2 (Combustion type)
Gas Production Capacity: 1000-20,000 m³/h (Smit Combustion); 3000-22,500 m³/h (Smit LNG/LPG)
Operating Pressure: 0.15-0.25 bar(g) Combustion; up to 0.4 bar(g) LNG/LPG
Scrubber Type: Wet scrubber with spray cooling and water demisting
Fuel Consumption: Minimized via Ultramizing system; AFEM upgrade reduces by up to 40%
Analyzer Type: Combustion-process oxygen analyzer (SMIT7000/AAL7000 available as upgrade)

Product Lines

Smit Combustion (FU-Type)
Smit LNG/LPG
Smit Flue Gas
Smit Combinert

Common Failures & Inspection Points

Area: Scrubber fouling, corrosion, blocked spray nozzles, demister damage
Check: Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function
Area: Deck seal water level loss, gauge glass fouling, seal integrity compromise
Check: Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions
Area: P/V breaker seal loss, incorrect relief pressure setting, glycol/water mixture degradation
Check: Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated
Area: Oxygen analyzer drift, calibration loss, sensor fouling or failure
Check: Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled
Area: Combustion process inefficiency, incomplete fuel combustion, soot generation
Check: Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition
Area: Non-return valve (check valve) function loss, backflow risk to engine room
Check: Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Alfa Laval, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 3000m3h

Capacity (m³/h)

3000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Oxygen Output Range: 2-4% O2 (Combustion type)
Gas Production Capacity: 1000-20,000 m³/h (Smit Combustion); 3000-22,500 m³/h (Smit LNG/LPG)
Operating Pressure: 0.15-0.25 bar(g) Combustion; up to 0.4 bar(g) LNG/LPG
Scrubber Type: Wet scrubber with spray cooling and water demisting
Fuel Consumption: Minimized via Ultramizing system; AFEM upgrade reduces by up to 40%
Analyzer Type: Combustion-process oxygen analyzer (SMIT7000/AAL7000 available as upgrade)

Product Lines

Smit Combustion (FU-Type)
Smit LNG/LPG
Smit Flue Gas
Smit Combinert

Common Failures & Inspection Points

Area: Scrubber fouling, corrosion, blocked spray nozzles, demister damage
Check: Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function
Area: Deck seal water level loss, gauge glass fouling, seal integrity compromise
Check: Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions
Area: P/V breaker seal loss, incorrect relief pressure setting, glycol/water mixture degradation
Check: Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated
Area: Oxygen analyzer drift, calibration loss, sensor fouling or failure
Check: Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled
Area: Combustion process inefficiency, incomplete fuel combustion, soot generation
Check: Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition
Area: Non-return valve (check valve) function loss, backflow risk to engine room
Check: Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Alfa Laval, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 5000m3h

Capacity (m³/h)

5000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Oxygen Output Range: 2-4% O2 (Combustion type)
Gas Production Capacity: 1000-20,000 m³/h (Smit Combustion); 3000-22,500 m³/h (Smit LNG/LPG)
Operating Pressure: 0.15-0.25 bar(g) Combustion; up to 0.4 bar(g) LNG/LPG
Scrubber Type: Wet scrubber with spray cooling and water demisting
Fuel Consumption: Minimized via Ultramizing system; AFEM upgrade reduces by up to 40%
Analyzer Type: Combustion-process oxygen analyzer (SMIT7000/AAL7000 available as upgrade)

Product Lines

Smit Combustion (FU-Type)
Smit LNG/LPG
Smit Flue Gas
Smit Combinert

Common Failures & Inspection Points

Area: Scrubber fouling, corrosion, blocked spray nozzles, demister damage
Check: Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function
Area: Deck seal water level loss, gauge glass fouling, seal integrity compromise
Check: Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions
Area: P/V breaker seal loss, incorrect relief pressure setting, glycol/water mixture degradation
Check: Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated
Area: Oxygen analyzer drift, calibration loss, sensor fouling or failure
Check: Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled
Area: Combustion process inefficiency, incomplete fuel combustion, soot generation
Check: Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition
Area: Non-return valve (check valve) function loss, backflow risk to engine room
Check: Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Alfa Laval, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 8000m3h

Capacity (m³/h)

8000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Oxygen Output Range: 2-4% O2 (Combustion type)
Gas Production Capacity: 1000-20,000 m³/h (Smit Combustion); 3000-22,500 m³/h (Smit LNG/LPG)
Operating Pressure: 0.15-0.25 bar(g) Combustion; up to 0.4 bar(g) LNG/LPG
Scrubber Type: Wet scrubber with spray cooling and water demisting
Fuel Consumption: Minimized via Ultramizing system; AFEM upgrade reduces by up to 40%
Analyzer Type: Combustion-process oxygen analyzer (SMIT7000/AAL7000 available as upgrade)

Product Lines

Smit Combustion (FU-Type)
Smit LNG/LPG
Smit Flue Gas
Smit Combinert

Common Failures & Inspection Points

Area: Scrubber fouling, corrosion, blocked spray nozzles, demister damage
Check: Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function
Area: Deck seal water level loss, gauge glass fouling, seal integrity compromise
Check: Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions
Area: P/V breaker seal loss, incorrect relief pressure setting, glycol/water mixture degradation
Check: Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated
Area: Oxygen analyzer drift, calibration loss, sensor fouling or failure
Check: Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled
Area: Combustion process inefficiency, incomplete fuel combustion, soot generation
Check: Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition
Area: Non-return valve (check valve) function loss, backflow risk to engine room
Check: Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Alfa Laval, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 10000m3h

Capacity (m³/h)

10000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Oxygen Output Range: 2-4% O2 (Combustion type)
Gas Production Capacity: 1000-20,000 m³/h (Smit Combustion); 3000-22,500 m³/h (Smit LNG/LPG)
Operating Pressure: 0.15-0.25 bar(g) Combustion; up to 0.4 bar(g) LNG/LPG
Scrubber Type: Wet scrubber with spray cooling and water demisting
Fuel Consumption: Minimized via Ultramizing system; AFEM upgrade reduces by up to 40%
Analyzer Type: Combustion-process oxygen analyzer (SMIT7000/AAL7000 available as upgrade)

Product Lines

Smit Combustion (FU-Type)
Smit LNG/LPG
Smit Flue Gas
Smit Combinert

Common Failures & Inspection Points

Area: Scrubber fouling, corrosion, blocked spray nozzles, demister damage
Check: Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function
Area: Deck seal water level loss, gauge glass fouling, seal integrity compromise
Check: Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions
Area: P/V breaker seal loss, incorrect relief pressure setting, glycol/water mixture degradation
Check: Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated
Area: Oxygen analyzer drift, calibration loss, sensor fouling or failure
Check: Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled
Area: Combustion process inefficiency, incomplete fuel combustion, soot generation
Check: Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition
Area: Non-return valve (check valve) function loss, backflow risk to engine room
Check: Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Alfa Laval, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 15000m3h

Capacity (m³/h)

15000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Oxygen Output Range: 2-4% O2 (Combustion type)
Gas Production Capacity: 1000-20,000 m³/h (Smit Combustion); 3000-22,500 m³/h (Smit LNG/LPG)
Operating Pressure: 0.15-0.25 bar(g) Combustion; up to 0.4 bar(g) LNG/LPG
Scrubber Type: Wet scrubber with spray cooling and water demisting
Fuel Consumption: Minimized via Ultramizing system; AFEM upgrade reduces by up to 40%
Analyzer Type: Combustion-process oxygen analyzer (SMIT7000/AAL7000 available as upgrade)

Product Lines

Smit Combustion (FU-Type)
Smit LNG/LPG
Smit Flue Gas
Smit Combinert

Common Failures & Inspection Points

Area: Scrubber fouling, corrosion, blocked spray nozzles, demister damage
Check: Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function
Area: Deck seal water level loss, gauge glass fouling, seal integrity compromise
Check: Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions
Area: P/V breaker seal loss, incorrect relief pressure setting, glycol/water mixture degradation
Check: Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated
Area: Oxygen analyzer drift, calibration loss, sensor fouling or failure
Check: Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled
Area: Combustion process inefficiency, incomplete fuel combustion, soot generation
Check: Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition
Area: Non-return valve (check valve) function loss, backflow risk to engine room
Check: Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Alfa Laval, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

Mahler AGS

IG Scrubber/Dryer 2000m3h

Capacity (m³/h)

2000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Nitrogen Purity: Up to 99.99 vol.-% (purities 95-99.99% typical for marine cargo inerting)
Capacity Range: 200 to 4,000 Nm³/h
Product Pressure: 6-9 bar(abs) at outlet
Dew Point: Minimum -40°C and below
Residual O2 Content: Down to 100 ppmv (higher purities on demand)
Technology: Pressure Swing Adsorption (PSA) with Carbon Molecular Sieve (CMS)

Product Lines

NITROSWING PSA Nitrogen Plants
NITROSWING Modular Design Systems

Common Failures & Inspection Points

Area: Carbon Molecular Sieve (CMS) Degradation
Check: Annual full inspection: Check CMS bed condition, verify no moisture exposure (degrades sieve lifespan 10+ years; oil contamination reduces lifespan significantly); quarterly checks of N2 purity/flow rate and sieve replacement need. Pre-filters for moisture/oil removal must be inspected and replaced timely.
Area: Oxygen Analyzer Sampling Line Blockage
Check: Periodic inspection and CLEANING of O2 analyzer sampling pipes (at least twice yearly per updated procedures after carbon deposit incidents) to prevent partial clogging. Verify sampling line integrity, check for carbon deposits from IGG scrubber. Analyzer must trigger alarm at O2 > 8%.
Area: Deck Water Seal Integrity & Heating System
Check: Internal inspection of deck seal: check Venturi non-return valves/orifice plates for corrosion/damage (excessive water carryover to tanks); inspect inlet pipe/housing for corrosion/cracks; check heating coil condition. In cold weather zones, verify deck seal heating system operational. Test seal alarms.
Area: Activated Carbon Pre-Filter Contamination
Check: Check activated carbon tower for oil/moisture/foreign material accumulation (activated carbon prevents contaminants entering PSA unit). Inspect air dryer & filter units functionality. Replace pre-filters according to maintenance schedule if lubricated air is used. Monitor pressure drop across filters.
Area: P/V Valve (Pressure/Vacuum) Weight Mechanism Freeze
Check: Pre-operation inspection (especially cold weather): check P/V valve weight mechanism for freeze-in/sticking to seat. Verify non-return valve function to prevent cargo tank backflow. Test automatic shut-down systems. Confirm valve operability before each voyage commencement.
Area: Pressure Vessel Integrity & Adsorption Towers
Check: Annual inspection of dual adsorption towers (filled with CMS) for structural integrity, corrosion, or damage. Verify tower seals/connections integrity. Check product quality downstream (N2 purity/flow); if degraded, towers may need CMS bed replacement. Pressure test vessels per classification society rules.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Mahler AGS, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 3000m3h

Capacity (m³/h)

3000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Nitrogen Purity: Up to 99.99 vol.-% (purities 95-99.99% typical for marine cargo inerting)
Capacity Range: 200 to 4,000 Nm³/h
Product Pressure: 6-9 bar(abs) at outlet
Dew Point: Minimum -40°C and below
Residual O2 Content: Down to 100 ppmv (higher purities on demand)
Technology: Pressure Swing Adsorption (PSA) with Carbon Molecular Sieve (CMS)

Product Lines

NITROSWING PSA Nitrogen Plants
NITROSWING Modular Design Systems

Common Failures & Inspection Points

Area: Carbon Molecular Sieve (CMS) Degradation
Check: Annual full inspection: Check CMS bed condition, verify no moisture exposure (degrades sieve lifespan 10+ years; oil contamination reduces lifespan significantly); quarterly checks of N2 purity/flow rate and sieve replacement need. Pre-filters for moisture/oil removal must be inspected and replaced timely.
Area: Oxygen Analyzer Sampling Line Blockage
Check: Periodic inspection and CLEANING of O2 analyzer sampling pipes (at least twice yearly per updated procedures after carbon deposit incidents) to prevent partial clogging. Verify sampling line integrity, check for carbon deposits from IGG scrubber. Analyzer must trigger alarm at O2 > 8%.
Area: Deck Water Seal Integrity & Heating System
Check: Internal inspection of deck seal: check Venturi non-return valves/orifice plates for corrosion/damage (excessive water carryover to tanks); inspect inlet pipe/housing for corrosion/cracks; check heating coil condition. In cold weather zones, verify deck seal heating system operational. Test seal alarms.
Area: Activated Carbon Pre-Filter Contamination
Check: Check activated carbon tower for oil/moisture/foreign material accumulation (activated carbon prevents contaminants entering PSA unit). Inspect air dryer & filter units functionality. Replace pre-filters according to maintenance schedule if lubricated air is used. Monitor pressure drop across filters.
Area: P/V Valve (Pressure/Vacuum) Weight Mechanism Freeze
Check: Pre-operation inspection (especially cold weather): check P/V valve weight mechanism for freeze-in/sticking to seat. Verify non-return valve function to prevent cargo tank backflow. Test automatic shut-down systems. Confirm valve operability before each voyage commencement.
Area: Pressure Vessel Integrity & Adsorption Towers
Check: Annual inspection of dual adsorption towers (filled with CMS) for structural integrity, corrosion, or damage. Verify tower seals/connections integrity. Check product quality downstream (N2 purity/flow); if degraded, towers may need CMS bed replacement. Pressure test vessels per classification society rules.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Mahler AGS, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 5000m3h

Capacity (m³/h)

5000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Nitrogen Purity: Up to 99.99 vol.-% (purities 95-99.99% typical for marine cargo inerting)
Capacity Range: 200 to 4,000 Nm³/h
Product Pressure: 6-9 bar(abs) at outlet
Dew Point: Minimum -40°C and below
Residual O2 Content: Down to 100 ppmv (higher purities on demand)
Technology: Pressure Swing Adsorption (PSA) with Carbon Molecular Sieve (CMS)

Product Lines

NITROSWING PSA Nitrogen Plants
NITROSWING Modular Design Systems

Common Failures & Inspection Points

Area: Carbon Molecular Sieve (CMS) Degradation
Check: Annual full inspection: Check CMS bed condition, verify no moisture exposure (degrades sieve lifespan 10+ years; oil contamination reduces lifespan significantly); quarterly checks of N2 purity/flow rate and sieve replacement need. Pre-filters for moisture/oil removal must be inspected and replaced timely.
Area: Oxygen Analyzer Sampling Line Blockage
Check: Periodic inspection and CLEANING of O2 analyzer sampling pipes (at least twice yearly per updated procedures after carbon deposit incidents) to prevent partial clogging. Verify sampling line integrity, check for carbon deposits from IGG scrubber. Analyzer must trigger alarm at O2 > 8%.
Area: Deck Water Seal Integrity & Heating System
Check: Internal inspection of deck seal: check Venturi non-return valves/orifice plates for corrosion/damage (excessive water carryover to tanks); inspect inlet pipe/housing for corrosion/cracks; check heating coil condition. In cold weather zones, verify deck seal heating system operational. Test seal alarms.
Area: Activated Carbon Pre-Filter Contamination
Check: Check activated carbon tower for oil/moisture/foreign material accumulation (activated carbon prevents contaminants entering PSA unit). Inspect air dryer & filter units functionality. Replace pre-filters according to maintenance schedule if lubricated air is used. Monitor pressure drop across filters.
Area: P/V Valve (Pressure/Vacuum) Weight Mechanism Freeze
Check: Pre-operation inspection (especially cold weather): check P/V valve weight mechanism for freeze-in/sticking to seat. Verify non-return valve function to prevent cargo tank backflow. Test automatic shut-down systems. Confirm valve operability before each voyage commencement.
Area: Pressure Vessel Integrity & Adsorption Towers
Check: Annual inspection of dual adsorption towers (filled with CMS) for structural integrity, corrosion, or damage. Verify tower seals/connections integrity. Check product quality downstream (N2 purity/flow); if degraded, towers may need CMS bed replacement. Pressure test vessels per classification society rules.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Mahler AGS, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 8000m3h

Capacity (m³/h)

8000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Nitrogen Purity: Up to 99.99 vol.-% (purities 95-99.99% typical for marine cargo inerting)
Capacity Range: 200 to 4,000 Nm³/h
Product Pressure: 6-9 bar(abs) at outlet
Dew Point: Minimum -40°C and below
Residual O2 Content: Down to 100 ppmv (higher purities on demand)
Technology: Pressure Swing Adsorption (PSA) with Carbon Molecular Sieve (CMS)

Product Lines

NITROSWING PSA Nitrogen Plants
NITROSWING Modular Design Systems

Common Failures & Inspection Points

Area: Carbon Molecular Sieve (CMS) Degradation
Check: Annual full inspection: Check CMS bed condition, verify no moisture exposure (degrades sieve lifespan 10+ years; oil contamination reduces lifespan significantly); quarterly checks of N2 purity/flow rate and sieve replacement need. Pre-filters for moisture/oil removal must be inspected and replaced timely.
Area: Oxygen Analyzer Sampling Line Blockage
Check: Periodic inspection and CLEANING of O2 analyzer sampling pipes (at least twice yearly per updated procedures after carbon deposit incidents) to prevent partial clogging. Verify sampling line integrity, check for carbon deposits from IGG scrubber. Analyzer must trigger alarm at O2 > 8%.
Area: Deck Water Seal Integrity & Heating System
Check: Internal inspection of deck seal: check Venturi non-return valves/orifice plates for corrosion/damage (excessive water carryover to tanks); inspect inlet pipe/housing for corrosion/cracks; check heating coil condition. In cold weather zones, verify deck seal heating system operational. Test seal alarms.
Area: Activated Carbon Pre-Filter Contamination
Check: Check activated carbon tower for oil/moisture/foreign material accumulation (activated carbon prevents contaminants entering PSA unit). Inspect air dryer & filter units functionality. Replace pre-filters according to maintenance schedule if lubricated air is used. Monitor pressure drop across filters.
Area: P/V Valve (Pressure/Vacuum) Weight Mechanism Freeze
Check: Pre-operation inspection (especially cold weather): check P/V valve weight mechanism for freeze-in/sticking to seat. Verify non-return valve function to prevent cargo tank backflow. Test automatic shut-down systems. Confirm valve operability before each voyage commencement.
Area: Pressure Vessel Integrity & Adsorption Towers
Check: Annual inspection of dual adsorption towers (filled with CMS) for structural integrity, corrosion, or damage. Verify tower seals/connections integrity. Check product quality downstream (N2 purity/flow); if degraded, towers may need CMS bed replacement. Pressure test vessels per classification society rules.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Mahler AGS, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 10000m3h

Capacity (m³/h)

10000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Nitrogen Purity: Up to 99.99 vol.-% (purities 95-99.99% typical for marine cargo inerting)
Capacity Range: 200 to 4,000 Nm³/h
Product Pressure: 6-9 bar(abs) at outlet
Dew Point: Minimum -40°C and below
Residual O2 Content: Down to 100 ppmv (higher purities on demand)
Technology: Pressure Swing Adsorption (PSA) with Carbon Molecular Sieve (CMS)

Product Lines

NITROSWING PSA Nitrogen Plants
NITROSWING Modular Design Systems

Common Failures & Inspection Points

Area: Carbon Molecular Sieve (CMS) Degradation
Check: Annual full inspection: Check CMS bed condition, verify no moisture exposure (degrades sieve lifespan 10+ years; oil contamination reduces lifespan significantly); quarterly checks of N2 purity/flow rate and sieve replacement need. Pre-filters for moisture/oil removal must be inspected and replaced timely.
Area: Oxygen Analyzer Sampling Line Blockage
Check: Periodic inspection and CLEANING of O2 analyzer sampling pipes (at least twice yearly per updated procedures after carbon deposit incidents) to prevent partial clogging. Verify sampling line integrity, check for carbon deposits from IGG scrubber. Analyzer must trigger alarm at O2 > 8%.
Area: Deck Water Seal Integrity & Heating System
Check: Internal inspection of deck seal: check Venturi non-return valves/orifice plates for corrosion/damage (excessive water carryover to tanks); inspect inlet pipe/housing for corrosion/cracks; check heating coil condition. In cold weather zones, verify deck seal heating system operational. Test seal alarms.
Area: Activated Carbon Pre-Filter Contamination
Check: Check activated carbon tower for oil/moisture/foreign material accumulation (activated carbon prevents contaminants entering PSA unit). Inspect air dryer & filter units functionality. Replace pre-filters according to maintenance schedule if lubricated air is used. Monitor pressure drop across filters.
Area: P/V Valve (Pressure/Vacuum) Weight Mechanism Freeze
Check: Pre-operation inspection (especially cold weather): check P/V valve weight mechanism for freeze-in/sticking to seat. Verify non-return valve function to prevent cargo tank backflow. Test automatic shut-down systems. Confirm valve operability before each voyage commencement.
Area: Pressure Vessel Integrity & Adsorption Towers
Check: Annual inspection of dual adsorption towers (filled with CMS) for structural integrity, corrosion, or damage. Verify tower seals/connections integrity. Check product quality downstream (N2 purity/flow); if degraded, towers may need CMS bed replacement. Pressure test vessels per classification society rules.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Mahler AGS, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 15000m3h

Capacity (m³/h)

15000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Nitrogen Purity: Up to 99.99 vol.-% (purities 95-99.99% typical for marine cargo inerting)
Capacity Range: 200 to 4,000 Nm³/h
Product Pressure: 6-9 bar(abs) at outlet
Dew Point: Minimum -40°C and below
Residual O2 Content: Down to 100 ppmv (higher purities on demand)
Technology: Pressure Swing Adsorption (PSA) with Carbon Molecular Sieve (CMS)

Product Lines

NITROSWING PSA Nitrogen Plants
NITROSWING Modular Design Systems

Common Failures & Inspection Points

Area: Carbon Molecular Sieve (CMS) Degradation
Check: Annual full inspection: Check CMS bed condition, verify no moisture exposure (degrades sieve lifespan 10+ years; oil contamination reduces lifespan significantly); quarterly checks of N2 purity/flow rate and sieve replacement need. Pre-filters for moisture/oil removal must be inspected and replaced timely.
Area: Oxygen Analyzer Sampling Line Blockage
Check: Periodic inspection and CLEANING of O2 analyzer sampling pipes (at least twice yearly per updated procedures after carbon deposit incidents) to prevent partial clogging. Verify sampling line integrity, check for carbon deposits from IGG scrubber. Analyzer must trigger alarm at O2 > 8%.
Area: Deck Water Seal Integrity & Heating System
Check: Internal inspection of deck seal: check Venturi non-return valves/orifice plates for corrosion/damage (excessive water carryover to tanks); inspect inlet pipe/housing for corrosion/cracks; check heating coil condition. In cold weather zones, verify deck seal heating system operational. Test seal alarms.
Area: Activated Carbon Pre-Filter Contamination
Check: Check activated carbon tower for oil/moisture/foreign material accumulation (activated carbon prevents contaminants entering PSA unit). Inspect air dryer & filter units functionality. Replace pre-filters according to maintenance schedule if lubricated air is used. Monitor pressure drop across filters.
Area: P/V Valve (Pressure/Vacuum) Weight Mechanism Freeze
Check: Pre-operation inspection (especially cold weather): check P/V valve weight mechanism for freeze-in/sticking to seat. Verify non-return valve function to prevent cargo tank backflow. Test automatic shut-down systems. Confirm valve operability before each voyage commencement.
Area: Pressure Vessel Integrity & Adsorption Towers
Check: Annual inspection of dual adsorption towers (filled with CMS) for structural integrity, corrosion, or damage. Verify tower seals/connections integrity. Check product quality downstream (N2 purity/flow); if degraded, towers may need CMS bed replacement. Pressure test vessels per classification society rules.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Mahler AGS, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

SAACKE

IG Scrubber/Dryer 2000m3h unverified

Capacity (m³/h)

2000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Datasheet

IG Scrubber/Dryer 3000m3h unverified

Capacity (m³/h)

3000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Datasheet

IG Scrubber/Dryer 5000m3h unverified

Capacity (m³/h)

5000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Datasheet

IG Scrubber/Dryer 8000m3h unverified

Capacity (m³/h)

8000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Datasheet

IG Scrubber/Dryer 10000m3h unverified

Capacity (m³/h)

10000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Datasheet

IG Scrubber/Dryer 15000m3h unverified

Capacity (m³/h)

15000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Datasheet

Wärtsilä

IG Scrubber/Dryer 2000m3h

Capacity (m³/h)

2000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Gaskapazität: Bis 20.000 Nm³/h Nennwert
Sauerstoffgehalt: 3% by volume (auf Basis Marine Destillat)
Abgasdruck (normal): 0,12 bar gauge
Gasaustrittstemperatur: Max. 5°C über Seewassertemperatur
Inertgasfeuchte: 100% relative Feuchte, <1 g/kg Trockengas Wassertropfenanteil
Brennstoffverbrauch: 0,075 kg/Nm³ Gas (nominal)
Seewasserbedarf: 0,06 m³/Nm³ Gas (bei 32°C Seewassertemperatur)
Betriebsdauer: >20 Jahre Lebensdauer

Product Lines

Moss IGG für Tanker (Produkt & Chemikalienöltanker)
Moss IGG für Gastransporter (LNG Carrier)
Moss Mult-Inert System (Dual-Mode: IG & Flue Gas)
Moss Flue Gas System mit Topping-up Generator
Offshore Inertgas-Pakete

Common Failures & Inspection Points

Area: Scrubber-Rohrsystem Verschmutzung & Korrosion
Check: Visuelle Inspektion durch Mannlöcher auf Verschlammung, Korrosionsschäden, Ablagerungen; Überprüfung Düsen, Kühlrohre, Schwimmer, Sensoren, Demister-Elemente. Inspektionsfrequenz 6-12 Monate (verdoppelt bei kritischen Bedingungen). Eingang Trockendock inspizierbar (Scrubber-Abflussleitung).
Area: Oxygen-Analyser Probeleitung Verstopfung durch Kohlenstoffablagerungen
Check: Periodische Prüfung & Reinigung der Inertgas-Probeleitung zum O2-Analyzer (kritische Wartungsposition). Analyser selbst: 2-Punkt-Kalibrierung (Zero-Gas N₂ 0%, Span-Gas bekannte O₂-Konzentration) vor Betrieb. Kalibriergenauigkeit nach Hersteller. Alarmeinstellung: >8% O₂ Volumen.
Area: Deck Water Seal Wasserniveau & Funktionsprüfung
Check: Überprüfung Wasserzufuhr (min. 2 separate Pumpen erforderlich). Sichtprüfung Wasserstand (mit Niedrigstand-Alarm ausgestattet). Inspektions-PMS-Intervall nach Hersteller; besondere Aufmerksamkeit bei IG-System-Abschaltung. Prüfung auf Blockade/Korrosion an Öffnungen.
Area: Pressure/Vacuum Breaker (P/V-Breaker) Druckeinstellung & Flammschutz
Check: Überprüfung Flammensiebe/Maschen (Ersatz nach PMS-Plan). Kalibrierung für erforderliche Druckwerte + Test bei Betriebsdruck durchführen. Flüssigkeitsgefüllte Breaker: Kontrollflüssigkeitstyp & Niveau; bei Frostgefahr Antifrost-Zusatz prüfen. Beschriftung mit Öff nungsdrücken & Flüssigkeitstyp/Konzentration + min. Betriebstemperatur.
Area: Rückschlagventil (Non-Return Valve / Check Valve) Freigang & Ventilsitz
Check: Ventil zur Inspection öffnen. Prüfung auf Korrosion, Ventilsitz-Zustand, freie Ventilbewegung über volle Hublänge. Betriebsprobe im Service durchführen. Mindestens zwei Rückschlagvorrichtungen erforderlich (Deck Seal + Isolierventil). Kritisch für Hydrokarbon-Rückfluss-Verhinderung in Maschinenraum.
Area: Brennkammer-Zustand & Lagerzustand Flue-Gas-Rückzirkulations-Ventile
Check: Zugang zur Brennkammer über Klappfront (werkzeugfrei zugänglich — prüfen auf Verschleiß). Flue-Gas & Rezirkulationsventile regelmäßig stroben (Hubtest) wenn System außer Betrieb — Sicherstellen freier Betrieb über vollen Hubbereich. Inspektionsfrequenz nach Betriebshäufigkeit.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Wärtsilä, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 3000m3h

Capacity (m³/h)

3000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Gaskapazität: Bis 20.000 Nm³/h Nennwert
Sauerstoffgehalt: 3% by volume (auf Basis Marine Destillat)
Abgasdruck (normal): 0,12 bar gauge
Gasaustrittstemperatur: Max. 5°C über Seewassertemperatur
Inertgasfeuchte: 100% relative Feuchte, <1 g/kg Trockengas Wassertropfenanteil
Brennstoffverbrauch: 0,075 kg/Nm³ Gas (nominal)
Seewasserbedarf: 0,06 m³/Nm³ Gas (bei 32°C Seewassertemperatur)
Betriebsdauer: >20 Jahre Lebensdauer

Product Lines

Moss IGG für Tanker (Produkt & Chemikalienöltanker)
Moss IGG für Gastransporter (LNG Carrier)
Moss Mult-Inert System (Dual-Mode: IG & Flue Gas)
Moss Flue Gas System mit Topping-up Generator
Offshore Inertgas-Pakete

Common Failures & Inspection Points

Area: Scrubber-Rohrsystem Verschmutzung & Korrosion
Check: Visuelle Inspektion durch Mannlöcher auf Verschlammung, Korrosionsschäden, Ablagerungen; Überprüfung Düsen, Kühlrohre, Schwimmer, Sensoren, Demister-Elemente. Inspektionsfrequenz 6-12 Monate (verdoppelt bei kritischen Bedingungen). Eingang Trockendock inspizierbar (Scrubber-Abflussleitung).
Area: Oxygen-Analyser Probeleitung Verstopfung durch Kohlenstoffablagerungen
Check: Periodische Prüfung & Reinigung der Inertgas-Probeleitung zum O2-Analyzer (kritische Wartungsposition). Analyser selbst: 2-Punkt-Kalibrierung (Zero-Gas N₂ 0%, Span-Gas bekannte O₂-Konzentration) vor Betrieb. Kalibriergenauigkeit nach Hersteller. Alarmeinstellung: >8% O₂ Volumen.
Area: Deck Water Seal Wasserniveau & Funktionsprüfung
Check: Überprüfung Wasserzufuhr (min. 2 separate Pumpen erforderlich). Sichtprüfung Wasserstand (mit Niedrigstand-Alarm ausgestattet). Inspektions-PMS-Intervall nach Hersteller; besondere Aufmerksamkeit bei IG-System-Abschaltung. Prüfung auf Blockade/Korrosion an Öffnungen.
Area: Pressure/Vacuum Breaker (P/V-Breaker) Druckeinstellung & Flammschutz
Check: Überprüfung Flammensiebe/Maschen (Ersatz nach PMS-Plan). Kalibrierung für erforderliche Druckwerte + Test bei Betriebsdruck durchführen. Flüssigkeitsgefüllte Breaker: Kontrollflüssigkeitstyp & Niveau; bei Frostgefahr Antifrost-Zusatz prüfen. Beschriftung mit Öff nungsdrücken & Flüssigkeitstyp/Konzentration + min. Betriebstemperatur.
Area: Rückschlagventil (Non-Return Valve / Check Valve) Freigang & Ventilsitz
Check: Ventil zur Inspection öffnen. Prüfung auf Korrosion, Ventilsitz-Zustand, freie Ventilbewegung über volle Hublänge. Betriebsprobe im Service durchführen. Mindestens zwei Rückschlagvorrichtungen erforderlich (Deck Seal + Isolierventil). Kritisch für Hydrokarbon-Rückfluss-Verhinderung in Maschinenraum.
Area: Brennkammer-Zustand & Lagerzustand Flue-Gas-Rückzirkulations-Ventile
Check: Zugang zur Brennkammer über Klappfront (werkzeugfrei zugänglich — prüfen auf Verschleiß). Flue-Gas & Rezirkulationsventile regelmäßig stroben (Hubtest) wenn System außer Betrieb — Sicherstellen freier Betrieb über vollen Hubbereich. Inspektionsfrequenz nach Betriebshäufigkeit.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Wärtsilä, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 5000m3h

Capacity (m³/h)

5000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Gaskapazität: Bis 20.000 Nm³/h Nennwert
Sauerstoffgehalt: 3% by volume (auf Basis Marine Destillat)
Abgasdruck (normal): 0,12 bar gauge
Gasaustrittstemperatur: Max. 5°C über Seewassertemperatur
Inertgasfeuchte: 100% relative Feuchte, <1 g/kg Trockengas Wassertropfenanteil
Brennstoffverbrauch: 0,075 kg/Nm³ Gas (nominal)
Seewasserbedarf: 0,06 m³/Nm³ Gas (bei 32°C Seewassertemperatur)
Betriebsdauer: >20 Jahre Lebensdauer

Product Lines

Moss IGG für Tanker (Produkt & Chemikalienöltanker)
Moss IGG für Gastransporter (LNG Carrier)
Moss Mult-Inert System (Dual-Mode: IG & Flue Gas)
Moss Flue Gas System mit Topping-up Generator
Offshore Inertgas-Pakete

Common Failures & Inspection Points

Area: Scrubber-Rohrsystem Verschmutzung & Korrosion
Check: Visuelle Inspektion durch Mannlöcher auf Verschlammung, Korrosionsschäden, Ablagerungen; Überprüfung Düsen, Kühlrohre, Schwimmer, Sensoren, Demister-Elemente. Inspektionsfrequenz 6-12 Monate (verdoppelt bei kritischen Bedingungen). Eingang Trockendock inspizierbar (Scrubber-Abflussleitung).
Area: Oxygen-Analyser Probeleitung Verstopfung durch Kohlenstoffablagerungen
Check: Periodische Prüfung & Reinigung der Inertgas-Probeleitung zum O2-Analyzer (kritische Wartungsposition). Analyser selbst: 2-Punkt-Kalibrierung (Zero-Gas N₂ 0%, Span-Gas bekannte O₂-Konzentration) vor Betrieb. Kalibriergenauigkeit nach Hersteller. Alarmeinstellung: >8% O₂ Volumen.
Area: Deck Water Seal Wasserniveau & Funktionsprüfung
Check: Überprüfung Wasserzufuhr (min. 2 separate Pumpen erforderlich). Sichtprüfung Wasserstand (mit Niedrigstand-Alarm ausgestattet). Inspektions-PMS-Intervall nach Hersteller; besondere Aufmerksamkeit bei IG-System-Abschaltung. Prüfung auf Blockade/Korrosion an Öffnungen.
Area: Pressure/Vacuum Breaker (P/V-Breaker) Druckeinstellung & Flammschutz
Check: Überprüfung Flammensiebe/Maschen (Ersatz nach PMS-Plan). Kalibrierung für erforderliche Druckwerte + Test bei Betriebsdruck durchführen. Flüssigkeitsgefüllte Breaker: Kontrollflüssigkeitstyp & Niveau; bei Frostgefahr Antifrost-Zusatz prüfen. Beschriftung mit Öff nungsdrücken & Flüssigkeitstyp/Konzentration + min. Betriebstemperatur.
Area: Rückschlagventil (Non-Return Valve / Check Valve) Freigang & Ventilsitz
Check: Ventil zur Inspection öffnen. Prüfung auf Korrosion, Ventilsitz-Zustand, freie Ventilbewegung über volle Hublänge. Betriebsprobe im Service durchführen. Mindestens zwei Rückschlagvorrichtungen erforderlich (Deck Seal + Isolierventil). Kritisch für Hydrokarbon-Rückfluss-Verhinderung in Maschinenraum.
Area: Brennkammer-Zustand & Lagerzustand Flue-Gas-Rückzirkulations-Ventile
Check: Zugang zur Brennkammer über Klappfront (werkzeugfrei zugänglich — prüfen auf Verschleiß). Flue-Gas & Rezirkulationsventile regelmäßig stroben (Hubtest) wenn System außer Betrieb — Sicherstellen freier Betrieb über vollen Hubbereich. Inspektionsfrequenz nach Betriebshäufigkeit.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Wärtsilä, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 8000m3h

Capacity (m³/h)

8000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Gaskapazität: Bis 20.000 Nm³/h Nennwert
Sauerstoffgehalt: 3% by volume (auf Basis Marine Destillat)
Abgasdruck (normal): 0,12 bar gauge
Gasaustrittstemperatur: Max. 5°C über Seewassertemperatur
Inertgasfeuchte: 100% relative Feuchte, <1 g/kg Trockengas Wassertropfenanteil
Brennstoffverbrauch: 0,075 kg/Nm³ Gas (nominal)
Seewasserbedarf: 0,06 m³/Nm³ Gas (bei 32°C Seewassertemperatur)
Betriebsdauer: >20 Jahre Lebensdauer

Product Lines

Moss IGG für Tanker (Produkt & Chemikalienöltanker)
Moss IGG für Gastransporter (LNG Carrier)
Moss Mult-Inert System (Dual-Mode: IG & Flue Gas)
Moss Flue Gas System mit Topping-up Generator
Offshore Inertgas-Pakete

Common Failures & Inspection Points

Area: Scrubber-Rohrsystem Verschmutzung & Korrosion
Check: Visuelle Inspektion durch Mannlöcher auf Verschlammung, Korrosionsschäden, Ablagerungen; Überprüfung Düsen, Kühlrohre, Schwimmer, Sensoren, Demister-Elemente. Inspektionsfrequenz 6-12 Monate (verdoppelt bei kritischen Bedingungen). Eingang Trockendock inspizierbar (Scrubber-Abflussleitung).
Area: Oxygen-Analyser Probeleitung Verstopfung durch Kohlenstoffablagerungen
Check: Periodische Prüfung & Reinigung der Inertgas-Probeleitung zum O2-Analyzer (kritische Wartungsposition). Analyser selbst: 2-Punkt-Kalibrierung (Zero-Gas N₂ 0%, Span-Gas bekannte O₂-Konzentration) vor Betrieb. Kalibriergenauigkeit nach Hersteller. Alarmeinstellung: >8% O₂ Volumen.
Area: Deck Water Seal Wasserniveau & Funktionsprüfung
Check: Überprüfung Wasserzufuhr (min. 2 separate Pumpen erforderlich). Sichtprüfung Wasserstand (mit Niedrigstand-Alarm ausgestattet). Inspektions-PMS-Intervall nach Hersteller; besondere Aufmerksamkeit bei IG-System-Abschaltung. Prüfung auf Blockade/Korrosion an Öffnungen.
Area: Pressure/Vacuum Breaker (P/V-Breaker) Druckeinstellung & Flammschutz
Check: Überprüfung Flammensiebe/Maschen (Ersatz nach PMS-Plan). Kalibrierung für erforderliche Druckwerte + Test bei Betriebsdruck durchführen. Flüssigkeitsgefüllte Breaker: Kontrollflüssigkeitstyp & Niveau; bei Frostgefahr Antifrost-Zusatz prüfen. Beschriftung mit Öff nungsdrücken & Flüssigkeitstyp/Konzentration + min. Betriebstemperatur.
Area: Rückschlagventil (Non-Return Valve / Check Valve) Freigang & Ventilsitz
Check: Ventil zur Inspection öffnen. Prüfung auf Korrosion, Ventilsitz-Zustand, freie Ventilbewegung über volle Hublänge. Betriebsprobe im Service durchführen. Mindestens zwei Rückschlagvorrichtungen erforderlich (Deck Seal + Isolierventil). Kritisch für Hydrokarbon-Rückfluss-Verhinderung in Maschinenraum.
Area: Brennkammer-Zustand & Lagerzustand Flue-Gas-Rückzirkulations-Ventile
Check: Zugang zur Brennkammer über Klappfront (werkzeugfrei zugänglich — prüfen auf Verschleiß). Flue-Gas & Rezirkulationsventile regelmäßig stroben (Hubtest) wenn System außer Betrieb — Sicherstellen freier Betrieb über vollen Hubbereich. Inspektionsfrequenz nach Betriebshäufigkeit.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Wärtsilä, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 10000m3h

Capacity (m³/h)

10000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Gaskapazität: Bis 20.000 Nm³/h Nennwert
Sauerstoffgehalt: 3% by volume (auf Basis Marine Destillat)
Abgasdruck (normal): 0,12 bar gauge
Gasaustrittstemperatur: Max. 5°C über Seewassertemperatur
Inertgasfeuchte: 100% relative Feuchte, <1 g/kg Trockengas Wassertropfenanteil
Brennstoffverbrauch: 0,075 kg/Nm³ Gas (nominal)
Seewasserbedarf: 0,06 m³/Nm³ Gas (bei 32°C Seewassertemperatur)
Betriebsdauer: >20 Jahre Lebensdauer

Product Lines

Moss IGG für Tanker (Produkt & Chemikalienöltanker)
Moss IGG für Gastransporter (LNG Carrier)
Moss Mult-Inert System (Dual-Mode: IG & Flue Gas)
Moss Flue Gas System mit Topping-up Generator
Offshore Inertgas-Pakete

Common Failures & Inspection Points

Area: Scrubber-Rohrsystem Verschmutzung & Korrosion
Check: Visuelle Inspektion durch Mannlöcher auf Verschlammung, Korrosionsschäden, Ablagerungen; Überprüfung Düsen, Kühlrohre, Schwimmer, Sensoren, Demister-Elemente. Inspektionsfrequenz 6-12 Monate (verdoppelt bei kritischen Bedingungen). Eingang Trockendock inspizierbar (Scrubber-Abflussleitung).
Area: Oxygen-Analyser Probeleitung Verstopfung durch Kohlenstoffablagerungen
Check: Periodische Prüfung & Reinigung der Inertgas-Probeleitung zum O2-Analyzer (kritische Wartungsposition). Analyser selbst: 2-Punkt-Kalibrierung (Zero-Gas N₂ 0%, Span-Gas bekannte O₂-Konzentration) vor Betrieb. Kalibriergenauigkeit nach Hersteller. Alarmeinstellung: >8% O₂ Volumen.
Area: Deck Water Seal Wasserniveau & Funktionsprüfung
Check: Überprüfung Wasserzufuhr (min. 2 separate Pumpen erforderlich). Sichtprüfung Wasserstand (mit Niedrigstand-Alarm ausgestattet). Inspektions-PMS-Intervall nach Hersteller; besondere Aufmerksamkeit bei IG-System-Abschaltung. Prüfung auf Blockade/Korrosion an Öffnungen.
Area: Pressure/Vacuum Breaker (P/V-Breaker) Druckeinstellung & Flammschutz
Check: Überprüfung Flammensiebe/Maschen (Ersatz nach PMS-Plan). Kalibrierung für erforderliche Druckwerte + Test bei Betriebsdruck durchführen. Flüssigkeitsgefüllte Breaker: Kontrollflüssigkeitstyp & Niveau; bei Frostgefahr Antifrost-Zusatz prüfen. Beschriftung mit Öff nungsdrücken & Flüssigkeitstyp/Konzentration + min. Betriebstemperatur.
Area: Rückschlagventil (Non-Return Valve / Check Valve) Freigang & Ventilsitz
Check: Ventil zur Inspection öffnen. Prüfung auf Korrosion, Ventilsitz-Zustand, freie Ventilbewegung über volle Hublänge. Betriebsprobe im Service durchführen. Mindestens zwei Rückschlagvorrichtungen erforderlich (Deck Seal + Isolierventil). Kritisch für Hydrokarbon-Rückfluss-Verhinderung in Maschinenraum.
Area: Brennkammer-Zustand & Lagerzustand Flue-Gas-Rückzirkulations-Ventile
Check: Zugang zur Brennkammer über Klappfront (werkzeugfrei zugänglich — prüfen auf Verschleiß). Flue-Gas & Rezirkulationsventile regelmäßig stroben (Hubtest) wenn System außer Betrieb — Sicherstellen freier Betrieb über vollen Hubbereich. Inspektionsfrequenz nach Betriebshäufigkeit.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Wärtsilä, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet

IG Scrubber/Dryer 15000m3h

Capacity (m³/h)

15000

Oxygen Content (%)

Dew Point (°C)

-25

Inert Gas System

scrubber

Technical Specifications

Gaskapazität: Bis 20.000 Nm³/h Nennwert
Sauerstoffgehalt: 3% by volume (auf Basis Marine Destillat)
Abgasdruck (normal): 0,12 bar gauge
Gasaustrittstemperatur: Max. 5°C über Seewassertemperatur
Inertgasfeuchte: 100% relative Feuchte, <1 g/kg Trockengas Wassertropfenanteil
Brennstoffverbrauch: 0,075 kg/Nm³ Gas (nominal)
Seewasserbedarf: 0,06 m³/Nm³ Gas (bei 32°C Seewassertemperatur)
Betriebsdauer: >20 Jahre Lebensdauer

Product Lines

Moss IGG für Tanker (Produkt & Chemikalienöltanker)
Moss IGG für Gastransporter (LNG Carrier)
Moss Mult-Inert System (Dual-Mode: IG & Flue Gas)
Moss Flue Gas System mit Topping-up Generator
Offshore Inertgas-Pakete

Common Failures & Inspection Points

Area: Scrubber-Rohrsystem Verschmutzung & Korrosion
Check: Visuelle Inspektion durch Mannlöcher auf Verschlammung, Korrosionsschäden, Ablagerungen; Überprüfung Düsen, Kühlrohre, Schwimmer, Sensoren, Demister-Elemente. Inspektionsfrequenz 6-12 Monate (verdoppelt bei kritischen Bedingungen). Eingang Trockendock inspizierbar (Scrubber-Abflussleitung).
Area: Oxygen-Analyser Probeleitung Verstopfung durch Kohlenstoffablagerungen
Check: Periodische Prüfung & Reinigung der Inertgas-Probeleitung zum O2-Analyzer (kritische Wartungsposition). Analyser selbst: 2-Punkt-Kalibrierung (Zero-Gas N₂ 0%, Span-Gas bekannte O₂-Konzentration) vor Betrieb. Kalibriergenauigkeit nach Hersteller. Alarmeinstellung: >8% O₂ Volumen.
Area: Deck Water Seal Wasserniveau & Funktionsprüfung
Check: Überprüfung Wasserzufuhr (min. 2 separate Pumpen erforderlich). Sichtprüfung Wasserstand (mit Niedrigstand-Alarm ausgestattet). Inspektions-PMS-Intervall nach Hersteller; besondere Aufmerksamkeit bei IG-System-Abschaltung. Prüfung auf Blockade/Korrosion an Öffnungen.
Area: Pressure/Vacuum Breaker (P/V-Breaker) Druckeinstellung & Flammschutz
Check: Überprüfung Flammensiebe/Maschen (Ersatz nach PMS-Plan). Kalibrierung für erforderliche Druckwerte + Test bei Betriebsdruck durchführen. Flüssigkeitsgefüllte Breaker: Kontrollflüssigkeitstyp & Niveau; bei Frostgefahr Antifrost-Zusatz prüfen. Beschriftung mit Öff nungsdrücken & Flüssigkeitstyp/Konzentration + min. Betriebstemperatur.
Area: Rückschlagventil (Non-Return Valve / Check Valve) Freigang & Ventilsitz
Check: Ventil zur Inspection öffnen. Prüfung auf Korrosion, Ventilsitz-Zustand, freie Ventilbewegung über volle Hublänge. Betriebsprobe im Service durchführen. Mindestens zwei Rückschlagvorrichtungen erforderlich (Deck Seal + Isolierventil). Kritisch für Hydrokarbon-Rückfluss-Verhinderung in Maschinenraum.
Area: Brennkammer-Zustand & Lagerzustand Flue-Gas-Rückzirkulations-Ventile
Check: Zugang zur Brennkammer über Klappfront (werkzeugfrei zugänglich — prüfen auf Verschleiß). Flue-Gas & Rezirkulationsventile regelmäßig stroben (Hubtest) wenn System außer Betrieb — Sicherstellen freier Betrieb über vollen Hubbereich. Inspektionsfrequenz nach Betriebshäufigkeit.

Typ-universelle Inspektions-/Wartungspunkte fuer Inert Gas Systems (Wärtsilä, Mega-Schwarm 2026-06). Per-Modell-Specs nicht auto-gefuellt.

Manufacturer Datasheet

Datasheet