Since the publication of ASME FFS-1/API 579 in 2007, the Omega creep model has become a virtual de facto standard for reduction of creep data and for high temperature structural analysis. Experience in both experimental and analytical applications has revealed some important features of this model. This paper presents a number of case studies illustrating these features, and discussing the range and limitations of the scope of the model, and procedures built around it. The paper includes recommendation, based on this experience, on the place considered appropriate for this model in future FFS and RLA applications.

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