Damanpreet,

I have used snubber in the Autopipe software for the slug flow application.
We have to use Damper option to simulate the snubber.

If damper is not helping in reducing the wind/seismic load, this means the point where damper is modeled in Autopipe is not right. The point where damper is to be simulated should be close to the nozzle & there should not be any change of direction before the turbine nozzle.

Hope it will help you.

Regards
Saneh