How Tankers Prevent Cargo Explosions: Complete Guide to the Inert Gas System (IGS) onboard Ship 🚢

Learn how the Inert Gas System (IGS) protects crude oil and product tankers from catastrophic fires and explosions. This guide walks you through the working principle, cargo tank flammability diagram, key components, and essential safety barriers required by SOLAS. ​Whether you are preparing for marine engineering exams, deck competency orals, or refreshing your onboard operational knowledge, this video covers everything you need to know about marine inerting operations. What You Will Learn: ​The Flammability Diagram: Understanding critical dilution lines and why keeping oxygen levels below 8% (and typically under 5% at the deck seal) prevents combustion. ​Gas Sources: Flue gas systems vs. standalone Inert Gas Generators (IGG) and Nitrogen generators. ​Component Walkthrough: Scrubber tower, blowers, pressure regulating valves, and demisters. ​Safety Barriers: Non-return valves, Deck Water Seal (wet, semi-dry, dry), and the Pressure/Vacuum (P/V) breaker. ​Key Operations: Inerting, purging, gas freeing, and tank topping up. #MarineEngineering #MerchantNavy #InertGasSystem #OilTanker #SOLAS #MaritimeTraining #ShipOperations