The following appears in the model consistency check report:
* * * W A R N I N G - MODEL * * * W2164-106:The following pipe ID's are using a depreciated fatigue curve, limited to 1E6 cycles:
P1, 6-STD, 4-STD
How to avoid it and fix it?
A model consistency check warning shall be displayed when the following conditions are true:
1. The model is using a Class 1 code
2. The edition is 1972+1972W addenda or later
3. The selected fatigue curve for any pipe ID is ASME III - ADLPipe (Default)
a consistency check warning (see above) shall then be displayed:
Again, pipes using the default ADLPipe fatigue curve are limited to 1E6 cycles, though most accepted fatigue curves today are limited to 1E11 cycles. This limitation is mentioned in the AutoPIPE help (ex.while on the pipe properties dialog, place cursor in Fatigue Curve field and press F1. This help page has detailed info related to this limitation of 1E6).
1. The default selection can be changed by selecting other fatigue curves in the drop-down list on the pipe properties dialog..
2. If you would like to get more entries in your fatigue summary and want to take the analysis beyond the 10^6 limit of the default ADLPipe fatigue curves, then select one of the later curves that go up to 10^11. The default curve haa a hard stops at 10^6 (the limit of the curves pre 1983) and the alternating stress values less than 26200psi (Austenitic) and 12250psi (Carbon) are not considered.
3. Using ASME III - ADLPipe (Default) fatigue curve may cause a different numbers of lines and sometime no entries in the summary table. Again, this is because the alternating stress value for the load pair becomes so small that it is beyond the end of the curve.
Warnings Messages displayed in AutoPIPE