When it come to shipping, Inert gas (IG) system is a crucial part of cargo operations in chemical or oil tanker in ships. The components used in an essential inert gas system in ships include:
Exhaustive gas source; the source of inert gas is the exhaust’s uptakes of main engine or boiler since they comprise of flue gas.
Scrubbing tower; as flue gas enters the scrub tower and passes via a cycle of water spray and perplex plates, the inert gas become, clean, cool, and moist.
Pressure vacuum breaker; it helps to control the very high or low pressurization of the tanker. A flame trap is fitted in the breaker’s vent to prevent a fire from igniting when loading and offloading operations are carried out in the ports.
Deck seal; it prevents the gas coming to the blower from returning to the cargo tanks. Usually, when wet deck seals are used, a demister often made of polypropylene, is fitted to absorb the gas moisture.
Mast riser; it maintains a positive pressure of inert gas during loading time, and it is kept open to prevent pressurization of the ship’s tank.
Gas blower; there are two types: an electrically driven blower for refilling purpose and a steam-driven turbine blower for I.G operation.
Other parts among others include cargo tank isolating, inert gas isolating, and I.G pressure regulating valves.
Functions of the IG System
The uses of IG system include preventing fires, stopping any chemical reaction (for chemical tankers), and maintain cargo quality which are from GIANTECH Engineering. The IG system spreads the inert gas over the ship that prevents hydrocarbon from burning and deters any chemical reactions.
The IG system is an integral operation part of an oil or chemical tanker ship. It comprises of different components that ensure its full operations. The system prevents fire, chemical reactions, and maintaining cargo quality.