Nigeria LNG is one of the world’s largest producers of liquefied natural gas (LNG) with a total capacity of 22 million tons/year of LNG, plus 5 million tons of LPG and condensate. This production capacity accounts for 10% of the world-wide LNG consumption.
The B&K Vibro monitoring system was selected for machine protection and condition monitoring of all critical machines and many auxiliary machines in the gas treatment, refrigeration and liquefaction cycles of 6 trains.
For the critical machines, condition monitoring is done online continuously and includes protection. Some of the machines are also performance monitored, such as the gas turbines and the compressors for mixed refrigerant, propane refrigerant, end flash, LPG storage and loading compressors. Many of the process parameters used in the thermodynamic calculations for performance monitoring are imported into the monitoring system from the distributed control system (DCS).