Hi all,

I have a question about modelling piping around a vertical in-line pump in combination with an API610 nozzle forces check.

Normally I would model a vertical inline pump that is not supported other than on the piping itself as a rigid with c-nodes on both sides and I would use the c-nodes for the API check.

Now I have a system with a vertical in-line pump which has supporting legs to support the pump itself on the floor. The manufacturer says they are made according to API610 and that the nozzle forces should be checked as such. Appendix F of API610 clearly states that it's about pumps that support on the piping only.

So 3 questions actually:
- is my original assuption correct for modelling inline pumps?
- can the supported inline pumps be checked according to API610?
- how should I model the pump and the piping in CII?
and as a seperate one:
- which cases (OPE, SUS, EXP etc) should be checked with API610? I can't seem to find anything about that. I assume it's OPE cases. Is this correct?

Thanks in advance for your reactions.