508A module
The design calculation according to TRD, series 300, serves for the proof of sufficient design dimensioning for given operation conditions (design data, operation time and cyclic loading).
With the help of this design calculation the module 508a determines the creep or cyclic usage factor for a selected component at a defined design date.
The calculation coefficients permit an estimation of the life time and the necessary test or exchange time for the examined component.
TRD 508, Appendix 1