Moss Inert Gas Systems

Wärtsilä is a market leader in the development, design, manufacture and servicing of advanced inert gas and nitrogen solutions for marine and off shore oil and gas applications.

Our strong reputation in inert gas solutions is based on over 50 years’ experience and unique full-scale R&D facilities located in Moss, Norway. Our references include over 2 500 vessels installed with our inert gas equipment. Performance testing of inert gas systems can be executed in the company’s own test hall in Moss, the only facility tailor-made for this purpose in the world today.

Wärtsilä Moss systems are vital systems to ensure a high level of safety for vessels where they are installed. Consequently, product quality is always the number one priority. All our systems are designed based on compact modules, offering important savings in space and installation cost both for newbuildings and for retrofit on existing vessels.

Wärtsilä ensures our customers a global network for lifetime support. This is vital to secure uninterrupted operation. Furthermore, we also offer Service Agreements, product training (from our facilities in Moss) and system upgrades to support our customers in their efforts to optimize operational performance as well as cost. Our in-house spare parts department will provide anticipated spares on short notice.

Inert Gas Systems for Tankers

Wärtsilä Moss Inert Gas Generators for Tankers

Our inert gas generator system, specialised for Tankers, ensures the correct atmosphere in the cargo tanks and pipes to minimize the risk of explosion.

Our systems are designed to a high level of safety and are based on compact modules, offering important savings in space and installation cost both for newbuildings and retrofitting existing vessels.

Our most recent developments include automatic regulation based on deck pressure setting. During off-loading the system optimizes the inert gas production to only produce the necessary quantum of Inert Gas to maintain the tank pressure. This system reduces oil consumption providing cost efficiency, as well as an environmental benefit.

To stay ahead of regulations, we have also developed containerised solutions which can easily be retrofitted on product & chemical tankers.

Wärtsilä Moss Mult-Inert™ Systems

The Wärtsilä Moss Mult-Inert system combines a flue gas system and an inert gas generator to offer maximum flexibility onboard product tankers transporting petroleum products.

The system can run as an inert gas generator or, when the boilers are in use, as a flue gas system. They are designed based on compact modules, offering important savings in space and installation cost for newbuild and retrofit vessels.

Wärtsilä Moss Flue Gas

Flue gas systems are used to channel exhaust gases from a ships boiler uptake.
They are tailor made for use on board crude oil carriers and are designed based on compact modules, offering important savings in space and installation cost both for newbuildings and for retrofit on existing vessels.The system also uses a topping up generator making high inert gas quality possible by a purposeful designed combustion chamber.

Wärtsilä Inert Gas Site

Inert Gas Systems for Gas Carriers

Moss Inert Gas Generators for Gas Carriers

Our inert gas generator system, specialised for Gas Carriers, ensures the correct atmosphere in the cargo tanks to minimize the risk of explosion.

Our system offers a high level of safety and are designed based on compact modules, offering important savings in space and installation cost for both newbuildings and retrofitting existing vessels.

Our most recent developments include higher capacity Wärtsilä Moss inert gas generator systems for new and larger LNG carriers requiring dry inert gas on-board, plus a combined inert gas system and gas combustion unit (GCU). Our newly developed integrated solution eliminates the need for a separate GCU and a safe and reliable gas combustion mode is implemented using the same equipment as the Wärtsilä Moss inert gas generator system.

Wärtsilä Inert Gas System and Gas Combustion Unit (IGG/GCU)

Wärtsilä have supplied combined IGG-GCU systems since its introduction in 2013. IGG-GCU uses an existing Wärtsilä Moss inert gas generator to burn the boil-off gas, thereby eliminating the need for a conventional gas combustion unit. This results in considerable capital expenditure savings. At the same time, by using the boil-off gas as fuel for creating inert gas, the combined system also provides notable operating cost savings.

The combined IGG-GCU system has a minimal environmental footprint. This is achieved through the replacement of a separate onboard system, and by using the boil-off gas for inert gas generation, which together minimise the extra use of marine diesel oil (MDO) fuel.

Wärtsilä Inert Gas Site

Moss Nitrogen Generators

Wärtsilä Moss Nitrogen Generators

Wärtsilä Moss Nitrogen Generators are dependable outlets for nitrogen. As the name implies, these systems are designed to generate, or create, a dry, clean inert gas. The use of nitrogen generators eliminates the problems associated with handling gas cylinders. Our nitrogen generators are designed for their flexibility and efficiency.

Wärtsilä Moss Nitrogen Generators are also designed to deliver various purities in the same system, giving our customers even greater flexibility. We supply niche, supplementary, small volume systems with capacities from 10 to 6000 Nm3/h at purities from 95 to 99.9% nitrogen.

For the offshore market, Wärtsilä Moss nitrogen generation systems supply dry and oil-free inert gas for purging, pressurising, and blanketing functions for various top site applications. These systems consist of two 100% inlet air filters, a pre-heater with thyristor control, separator membranes, an O2 analyser, UCP, and the controls and instruments for safe and automatic operation.

The system is particularly suited for marine and offshore applications, where the demand for high quality and challenging specifications is present. We always adapt to our customer`s needs, and are capable of installing our systems into the most challenging locations.

Wärtsilä Inert Gas Site

Useful Downloads

Inert Gas Systems for Tankers Brochure

[Download]

Flue Gas System Brochure

[Download]

Inert Gas System for Gas Carriers Brochure

[Download]