"> Wärtsilä Wartsila Moss IGG Tanker
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Wärtsilä

Wartsila Moss IGG Tanker

The Wärtsilä Wartsila Moss IGG Tanker is an inert gas generator system for tanker cargo safety, not a ballast-water treatment system despite the category shown in the supplied list. The system generates a low-oxygen inert gas stream and supplies it to cargo tanks or associated spaces so the atmosphere is kept outside the flammable range during approved cargo operations. A typical IGG installation includes a combustion or gas-generation section, gas cooling and cleaning equipment, blowers, oxygen monitoring, pressure control, valves and safety interlocks. It is integrated with the cargo-tank inert-gas main and with deck isolation, non-return and pressure-protection arrangements required by the vessel design. Reliable oxygen measurement and correct gas pressure are essential because the system is a safety barrier against formation of a flammable cargo-tank atmosphere. The exact burner arrangement, gas capacity, oxygen limit and control settings are vessel-specific; refer to the manufacturer documentation and applicable statutory documentation for the exact figure.

Components & Design

Component data being added…

Technical Data

Type Inert Gas Generator (IGG) for tankers
Capacity Range 1000 - 20000 Nm³/h
Fuel MGO / MDO
O2 Content (output) < 5 %
Approval IMO MSC.353(92), IGC Code

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Common failures & inspection points

Burner, ignition or combustion-control faults cause flame failure, poor inert-gas quality or generator shutdown
Scrubber or cooling-water restriction causes high gas temperature, poor cleaning or process alarms
Blower wear, damper faults or blocked gas paths reduce inert-gas pressure and flow to the deck main
Oxygen-analyser drift or sampling-line blockage gives unreliable oxygen readings and may prevent delivery to cargo tanks
Deck isolation valve, non-return device or pressure-control faults create unsafe backflow or cargo-tank pressure conditions

Service & Maintenance

Function-test oxygen monitoring, high-oxygen shutdown or diversion, gas-temperature protection, blowers, combustion safeguards and deck isolation arrangements. Inspect scrubber/cooling sections, drains, demisters, fans, dampers and gas piping for deposits, corrosion and leakage. Verify the deck water seal or other approved non-return arrangements where fitted and inspect pressure/vacuum protection associated with the inert-gas main. All oxygen limits, test values and statutory checks must follow the approved vessel and manufacturer documentation.

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Replacement Parts

Carry burner and ignition service parts, flame-detection components, blower bearings/seals as appropriate, oxygen-analyser cells and sampling components, valve-actuator kits, pressure/temperature sensors, scrubber nozzles or demister parts where replaceable, gaskets and control fuses. Critical spares should be aligned with cargo-operation risk and the vessel's redundancy philosophy.
Equipment Model #154014 · ✓ still in production