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Na + K must be less than 0.5PPM in Furnace Oil/HSD used in Siemens V94.2 Gas turbines according to their operating manuals.
Is there any limit for Na + K in Furnace Oil/HSD used in GE Frame9 Gas Turbines? Can't find any in their operating manuals

speedtronic,

Certainly, there are limits for any combustion turbine or internal combustion engine. GE does publish a GEH or GEI for references to fuel characteristics. Unfortuately, I don't recall the number of the publication, but I'm sure if you contacted GE or the packager of your GE-design heavy duty gas turbine they can provide a copy. If the unit was originally provided with heavy fuel oil (also known as "furnace oil) capability, it would have come with a specific publication on heavy fuel oil operation and treatment, which is yet another GE publication.

If you want to convert your unit, it's suggested you talk to a knowledgeable solution provider and give them the expected fuel characteristics of the fuels you are considering burning and they can tell you what solutions are available, both hardware (equipment) and chemical treatments, as appropriate.