I'm running a static and seismic analysis on a HPS piping system connecting 3 large boilers. The boiler manufacturer has a maximum allowable loads (forces and moments) for the nozzle.

I have this modeled in CII and am working on the design to get the forces within those limits (2,000 lbs and 2,400 ft*lbs; 8" connection via angled valve). I just started using the nozzle limit check, which is a really helpful tool.

Is it common to design equipment connections to handle seismic loading?

The flange leak check and equipment check features are in the static processor but not dynamic; is that a result of standard practices or computational problems. I can easily check the local forces and moments in the dynamic output to check the loads, but it seems pretty challenging to get these loads down even in the static case.

Feel free to ask any questions for context.

Louie