Check out the Pump GA & find the kind of supporting i.e whether its centrally supported or supported at offset. For the former case , place an anchor at the zero thermal growth location (i.e intersection of nozzle axes). Model the pump as rigid element with proper dia & significant thk. to impart rigidity.
For the latter case, model with offset & place anchor at the location of fixity & then follow the above procedure.
Do remember to make the pumps operating & stand-by cases as per your Process.
Hope this helps.
Keep Smiling,
SJ
“One of the most responsible things you can do as an adult is to become more of a child.”
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Keep Smiling
SJ