Varnish Formation in the Gas Turbine Oil Systems

    Volume 5, Issue 2 (February 2008)

    ISSN: 1546-962X


    Published Online: 28 February 2008

    Page Count: 12

    Sasaki, Akira
    Kleentek Corp. Japan, Tokyo,

    Uchiyama, Shinji
    Kleentek Corp. Japan, Tokyo,

    Kawasaki, Mariko
    Kleentek Corp. Japan, Tokyo,

    (Received 2 September 2007; accepted 8 January 2008)


    The authors have investigated hydraulic and lubricating oil filter elements used in gas turbine systems which had varnish problems. The hydraulic filter elements were completely plugged with varnish and other degradation products at the first layer of the elements but the lubricating oil filter elements were not plugged with such contamination. However, the proofs of spark discharges of static electricity were found on the lubricating oil filter elements. This paper discusses the details of the investigation of the filter elements and one of the root causes of varnish formation in gas turbine oil systems.

    Paper ID: JAI101419

    DOI: 10.1520/JAI101419

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    Title Varnish Formation in the Gas Turbine Oil Systems
    Symposium Symposium on Contamination of Hydraulic Systems and its Effect on Performance, 2007-12-03
    Committee D02