Liquefied Natural Gas (LNG) 101 LT Nick Woessner, P.E. Liquefied - PowerPoint PPT Presentation

Liquefied Natural Gas (LNG) 101 LT Nick Woessner, P.E. Liquefied Gas Carrier Inspector

Agenda  What is LNG?  How is it transported?  What if it spills?  Conclusion

Liquefied Natural Gas (LNG) Properties  Methane’s flammable range is 5-14%  Methane is lighter than air

Liquefied Natural Gas (LNG) Properties  Cooled to -260°F (-162°C)

Liquefied Natural Gas (LNG) Transportation  Transported safely at sea since 1960

Liquefied Natural Gas (LNG) Transportation

What if there is a Liquefied Natural Gas (LNG) spill?

Factors Affection Vapor Dispersion  The surface it is released on  The amount released  Air temperature  Surface temperature  Wind speed & direction  Location of ignition sources

Cryogenic Hazard

Prevent Ignition • Flammable Range 5-15% • No smoking • No hot or cold work • Use non-sparking tools • Use intrinsically safe or explosion proof electrical equipment

What if the spill catches fire?

What if the spill catches fire?  Use a dry chemical firefighting agent

Environmental Effects  LNG is not a marine environmental hazard – Not toxic, not corrosive – Floats on water – Evaporates when spilled on ground or water – Leaves no trace or residue

Conclusion • LNG is a cryogenic, liquefied gas • LNG spills will disperse as it warms • Flammable range is 5-15% by volume • 40,000 shipments of three billion cubic meters LNG were safely transported since 1970 without serious accidents

Questions?