I have observed , especially for big bore piping connected to compressors etc., the springs near the compressor nozzles do not share much load as compared to the hot load they are set for. More load is shared by compressor or pump nozzle. This is irrespective of whether hanger stiffness is set as 'rigid' or 'as designed' for WNC case.
Whether someone will be able to explain this behaviour ?
Regards,
Sunil