Joined: Tue Jun 15, 2010 4:51 am
Years of Experience: 04
I would like to ask to some practical problem that we are facing at our Ammonia plant.
A 20" line with SS material runs from an exchanger to a vessel. The pipe is attached to the flange of the exchanger through elbow, that turns the piping by 90 degrees. After the leg of elbow there is lateral expansion bellow. The lateral expansion bellow absorbs the 6mm lateral movement comming from the exchanger.
The bellow leaked at convultion point and necessity of its removal is asked through flexibilty analysis. The analysis showed the that the piping is OK with out the expansion bellow but the nozzle loads has been increased at the nozzle of the vessel.
Now my question is:
1.When the lateral expansion bellow is installed in the piping system
2.What will happen when it is removed.