Survitec Group is proud to present the re-engineered Maritime Protection Nitrogen system, first introduced in 1984. Nitrogen systems are needed for ships to stay compliant with regulations and to protect transportation of flammable and sensitive cargo. As an inert gas medium, nitrogen is the purest, and thereby the preferred solution for applications where cargo contamination could be an issue.
The Maritime Protection nitrogen system is based on membrane technology and designed in accordance with SOLAS, IMO MODU Code and other standards for the maritime markets. It is developed to meet any offshore specifications, including NORSOK. The system is delivered with all necessary approvals.


  • The Unique generator design for flexible installation. It only require access from two sides
  • One of the smallest footprints in the market
  • Standardised system range from compact sizes up to 5300 Nm³
  • Standardised cabinets and skids where filtration package and membrane racks are split
  • Special cabinet solution is available for vessels with low nitrogen flow requirements and very limited space
  • Designed with long lasting membranes for maritime environments and ambient temperature up to 55 °C degrees
  • High quality filter system and unique operational functionality protecting the membranes
  • No moving parts
  • "State of the art”, fully automated control and monitoring system that protects the equipment from damage and costly repairs
  • Functionality for maintenance cycles, and pre-alarm for critical conditions allows for easy maintenance planning



Trusted to protect passenger vessels

How our nitrogen systems are supporting the green transition


Engines operating on fuels such as LNG, ammonia and methanol require a nitrogen system for safety reasons. For example, for LNG-powered cruise ships, nitrogen will be used to purge the fuel gas system before and after engine start-up, and when maintenance work is carried out to create a safer, more stable environment. Find out more about how we’re supporting passenger ship operators with the move to cleaner fuels








Nitrogen systems typically consist of three major sections – compressor(s), generator, and storage and distribution system. Depending on your application, the nitrogen can be delivered directly to the cargo or void space, or stored in a receiver for later use. A booster compressor can be included to provide nitrogen at higher pressures, filling 200 or 300 bar nitrogen cylinders. Optionally the system can be designed to operate with two different purities simultaneously.
The Maritime Protection nitrogen system uses maritime quality rotary screw compressors to achieve the optimal amount of feed air supply. A choice of compressors are available, based on your preferences and requirements.

The nitrogen generator has an advanced feed air treatment system. Combined with unique functionalities this ensures high quality air, prolonging the lifetime of the membranes. The nitrogen generator separates air into its component gases by passing low pressure compressed air through hollow fibre semi-permeable membranes. By this the air is divided into two streams; nitrogen which holds purity level between 95% and 99,9% and remaining oxygen enriched air which is vented to a safe area.
Rapid system start-up enabling the system to reach purity and dew point quickly and improve operational efficiency. The system has a unique pressure and flow control that automatically adjust the capacity based on the cargo operation.


Survitec MP nitrogen system


System configuration (Click to view)


The Maritime Protection nitrogen system can be used to provide the highest level of safety and security for your valuable cargo. The system's application range is from small topping-up generators to large total inert gas systems.
It can be used onboard OSVs, gas carriers, chemical tankers, product tankers, LNG fuelled vessels, Cargo tanks and pipes, and Hold space on LNG vessels.

Survitec Nitrogen Chemical Vessel Survitec Nitrogen Helideck 



The Maritime Protection nitrogen system design is in accordance with SOLAS, IMO MODU Code and other standards for the maritime markets. It is developed to meet any offshore specifications, including NORSOK. The system is delivered with all necessary approvals.

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