LNG terminal – Power House ventilation

LNG Terminal Oman LNG MAN 18V51/60G Gas engine Oil bath filters Engine hall ventilation units ATEX Viscosine AAF Multiduty Self-cleaning filter Ventilation unit SCADA MCC cabinet Power house ventilation units SIEMENS Electrical package Ventilation panel PLC LNG Terminal Oman LNG MAN 18V51/60G Gas engine Acoustic study Noise mapping Predictive noise study 85 dB(A) at 1m Noise target Noise pollution Legislation Power house ventilation Gas engine Axial fan Marine grade propeller Hot dip galvanized steel housing Stainless Steel Protection grids Acoustic flexible sleeves Anti-vibration mounts Maintenance hatch ATEX rated
Terminal LNG
Oman LNG
MAN 18V51/60G
Gas engine 
Viscous oil bath filter 
Power house ventilation units 
Generator side ventilation unit 
Auxiliary side ventilation unit 
Fire & smoke ATEX marine damper 
AMCA 300
AMCA 500
ISO Course 50%
Terminal LNG
Oman LNG
MAN 18V51/60G
Moteur gaz 
Filtre à bain d'huile
Bord de mer
Clarcor Autoflo
Auto-flo 2000
Shell Tellus

SAI has supplied in 2020 an important contract including an acoustic study, a complex CFD study and the supply of ventilation units for a large power station equipped with 12 gas engine (17,6 MW each) on a LNG project in Middle East.

The 12 independent engine halls are equipped with 24 generator side ventilation units and 12 auxiliary side ventilation units. Passive air extraction is ensured by marine grade aluminium acoustic louvers installed on the building roof.

Each ventilation unit is equipped with rotary Oil Bath Filters. In total, we delivered 60 Oil Bath Filters fitted with weather louvers made by marine grade aluminum. In order to meet the acoustic objectives, the ventilation units are equipped with baffle-type silencers. We also integrated specific orientation flow devices on the ventilation unit downstream the axial fans to meet the CFD objectives.

On generator side, the ventilation units are skid-mounted. They can be quickly dismantled and handled in case of generator maintenance. These ventilation units also incorporate fire & smoke motorized dampers. The whole set is suitable for marine environment and ATEX rated.

To operate the whole system, SAI has also provided control panels with PLC & touchscreen. On each generator side ventilation units, we have 2 fans running & 1 fan stand-by.

Total ventilation airflow for this 12 engines power plant is exceeding 2,5 millions cubic meter per hour! With its unique expertise in acoustics, aeraulics and air filtration, SAI has been able to provide a tailor-made solution to meet this Oil & Gas customer expectations in term of high-quality standards.