What system is used on tankers to maintain a non-flammable atmosphere?

The Inert Gas System is specifically designed for tankers to maintain a non-flammable atmosphere within the cargo tanks. This system works by displacing the air in the tanks with an inert gas, usually nitrogen or a mixture that contains a low concentration of oxygen. By reducing the oxygen levels, the possibility of combustion is minimized, creating a safer environment for the transportation of volatile cargo. This is crucial on tankers, as any ignition source can lead to catastrophic incidents due to the highly flammable nature of the materials transported.

The Ventilation System is important for managing air quality and preventing the buildup of flammable vapors, but it does not create a non-flammable atmosphere to the same extent as an inert gas system. A Pressure Relief System is designed to manage excess pressure within tanks, ensuring that they do not exceed safety limits, but it does not directly prevent flammability. The Fire Suppression System focuses on extinguishing fires that may occur but does not actively maintain a non-flammable environment. Thus, the Inert Gas System is the most effective and specific solution for achieving a non-flammable atmosphere on tankers.