Abstract
Ships Service Turbine Generators (SSTG) have experienced cracking around the steam inlet passageways in the upper casing leading from the steam chest to the interior of the turbine. Fracture mechanics technology, employing the material properties of 2-1/4Cr-1Mo cast steel reported in Part I of this paper, was used to develop a methodology for evaluating these cracks, thus assuring a residual life of the turbine casings which is at least equal to the duration of the next scheduled inspection.
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