Metallic Bellows Designing Piping

Please explain how the piping runs and which points are restrained (solidly anchored). So far a surfeit of quantitative analysis is chasing a deficit of qualitative description.

Hi Tornado. Thanks for your reply.

OK, Piping runs horizontaly, say from north to south approx 40 m. Expansion joint location is at 3 m from the equipment nozzle (as an anchor). Intermediate supports are properly guided as per EJMA.

The other anchor location is at 35 m from the equipment nozzle. Actually it is not treated as an anchor in the previous analysis, but as per my understanding there should be an anchor on the other side of the expansion joint also. I have confirmed that the location can be taken as an anchor. (Perhaps if I use pressure balanced exp joint there is no need of this anchor. Correct me if I am wrong.)

There is no elbow between two anchors.

Pipe size is increased from 30" to 36", bellow is on 36" up to equipment nozzle.

Montek

It is time to talk to bellows manufacturers over the telephone. In fact, it is overdue.

The numbers work out to about 46,000 lbf tending to extend the bellows. The nearest piping anchors in each direction will need to resist this force.