🔍 Key Concepts

• Fuel source control in gas fires (what keeps the fire burning) • Differences between extinguishing agents (dry chemical, CO₂, water spray) for gas fires • Why suddenly putting out a gas flame can create a more dangerous situation

💭 Think About

• Think about what happens to leaking gas if the visible flame disappears but the leak continues—does the danger increase or decrease? • In an LNG leak with ignition, which is safer first: stopping the leak or simply removing the flame you can see? • Are single-agent answers ("only" one extinguishing agent) likely to cover all real LNG fire tactics?

✅ Before You Answer

• Consider that LNG is a gas under normal conditions and will continue to flow if not secured • Check whether eliminating the ignition source without stopping the leak might allow gas to accumulate and re-ignite explosively • Notice answer choices that say "use only" one agent—ask if that sounds realistic for complex gas fires