Sam,

The only reason why I suggested "with springs in unlocked condition also" is based on the fact the Turbines are extremely strain sensitive ( that is what my understanding is based on the extremely low allowables offered by NEMA)and more than that of pumps( where we do it with springs in locked condition only).

I agree with you that this is preferably done with as built iso and actual wts. of insulation, flanges , valves etc, but even in the design stage, the adequacy of supporting can be checked ( and better be) in the WNC, Anchor Free case. This I find is mostly not done and the align ment problem is overlooked.

I also fully agree with you that such analysis requires years of practical experience and young engineers should perform such analysis only under the guidance of an experienced one.

Regards