[en] A simplified inelastic analysis method is described for computing allowable cyclic stress ranges as a function of maximum operating metal temperatures. The ASME Code recommendations are followed for both low-temperature fatigue-limited regimes and elevated temperatures where material cyclic life is governed primarily by creep properties. This paper illustrates the simplified analysis of creep stress damage during an operating cycle and presents design curves for cyclic stresses. A testing method to substantiate these allowable stresses is also discussed