Forced Boil-Off Gas (FBOG) – Definition and Pronunciation
What is FBOG?
FBOG, or Forced Boil-off Gas, is the gas generated when liquefied natural gas (LNG) is heated, causing it to boil and convert back to its gaseous state. This process is typically managed in LNG facilities to maintain safety and efficiency during storage and transportation.
Examples of FBOG
The cargo tank NBOG, and FBOG where necessary, enter the vapour main via the cargo tank gas domes where it is directed via the mist separator to the LD or FG compressors.
From “Gas Combustion Systems on Liquefied Gas Carriers”.
If the gas demand is higher than the natural BOG rate, additional fuel gas or “forced BOG” (FBOG) is required. It is produced by pumping LNG from the cargo tanks to the forcing vaporiser and the resulting FBOG is led through a mist separator and a buffer tank to the gas heater, where it mixes with the NBOG from the LD compressor.
From “Dual-fuel diesel electric/Tri-fuel diesel electric (DFDE/TFDE)”.
When utilising BOG–NBOG/FBOG – as fuel for the ship’s main generating/propulsion plants, to prevent damage it is essential that no LNG is carried over into the suction of the LD compressor.
From “Low Duty Compressor(s) on the Liquefied Natural Gas Carriers”.
Pronunciation of FBOG
