Siemens SGT-500 Gas Turbine Passes IF180 Heavy Fuel Oil Test
Since the SGT-500 was originally designed for operation with HFO, and already has broad experience of operation with a variety of fuels, including intermediate fuel oils, the turbine is a suitable prospect for this market. The purpose of the test was thus to find the limits for good combustion with commercially available HFO regarding viscosity and carbon residue, and to document performance with the higher viscosity fuels demanded by the market.
The tests proved conclusively that SGT-500 can be fueled with commercially available HFO. Operation was problem-free, combustion efficiency was high, and the result indicates no significant effect on turbine maintenance. Most importantly, there is no visible smoke given off with this fuel as low as below 20 percent load. All the test targets were achieved, and in some cases, even exceeded.
After six weeks of intensive testing in the presence of independent branch specialists, DNV (Det Norske Veritas) signed a statement of preliminary approval for installation on vessels for operation with the stated HFO. The SGT-500 is thus the only gas turbine to be certified for such an application, giving it a clear competitive advantage on the market. Translated into customer economics, this is a significant reduction in fuel and operation costs compared with other propulsion machinery using light distillates.