We analyse 635 set-years of service experience of 147 merchant-marine steam-turbine-gear propulsion sets, finding an MTBF of 23.5 set-years. The sets of one good-sized fleet have 3 times as large an MTBF as the rest of the sample, a fine return on the more conservative attention paid them.The sample size increased linearly with date. The most satisfactory analysis was as a plot of age-wise cumulatives of failures and service-life. This detected a significant short relatively trouble-free wear-in period with an MTBF of 9.3 set-years; later service had a 27.6 set-year MTBF.We discuss many failure modes and the design and operating practices that minimize them. Much of the favorable MTBF comes from avoiding all but a very little innovation in the design of individual sets.


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    Title :

    Reliability of Merchant-Marine Turbine-Gear Propulsion Sets


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    6th Annual Reliability and Maintainability Conference ; 1967



    Publication date :

    1967-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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