Dear Friends,

Supports are located in horizontal pipe based on bending stress and deflection, but I would like to know how and what basis a support is placed on vertical piping. I viewed some vertical vessel piping arrangements; all the vessel piping arrangements are supported at the top, downside following by guides and after the bends either rest support or a spring hanger.

1. How to model a support in CAESAR II which moves along with vessel up and down with respect to vessel displacement?

2. Vessel Nozzle loads, How to reduce it? What if the pipe is “too long”.

3. If there are no possibilities to provide a support for vertical piping from vessel. How to place a support in piping arrangement?

4. How to support a Vertical piping when it is not connected to vessel? On what basis?

Show me few guidelines & books to refer which will be very useful. Thanks in advance.

First advice: use the "Search" function of this forum.

Regards,

hmmm.

http://65.57.255.42/ubbthreads/ubbthread...=true#Post26644

Already I viewed some forums Mr. danb, noted some points then I made certain points which has to be clarified for me. "tks." for your advice.

No problem.

For your first question, see the link and also the manual

http://65.57.255.42/ubbthreads/ubbthreads.php?ubb=showflat&Main=8533&Number=38686#Post38686

Regards,

2. "When your pipe gets "too long" to be supported at one point, springs are the answer." this was already stated in the link you mentioned.
3. If this is the situation, you will have to build a structure near the vessel

Regards,

:-)

2. Agreed.

3. Even if a structure is built near to the vessel and the piping is supported at the top near to the tangent line of the vessel, because of the vessel vertical movement the pipe lifts off during operating condition. Spring is a possible solution but if several lines are connected at top portion of vessel, is there any other economical way to provide a suitable support Mr. Dan.

Vessel clips (or even a structure on top of the vessel) are less costly then an entire structure near the vessel.

And regarding the cost, safety is invaluable. If spring is required, then the cost is a secondary issue.

Regards,

Mr. Dan Vessel is already insulated and support from vessel is not at all possible, Yes i accept safety is the first priority. So the only solution for a vertical vessel piping is to provide a spring support, when there are no provisions to take out a support from vessel.

Please find the attached image and give your suggestions about support arrangement.

Try to provide supports connected to vessel platforms (you should have for access)

Regards,

Or if you have a structure nearby, increase the flexibility of the branches that go to/from nozzle, in order to absorb the vertical expansion (add some elbows and length) and support the risers from the structure.

Regards,

If this work, add some guides also.

Regards

:^)

Yes, Already i tried the supports as you marked in the shown fig. but the flexibility... i haven't. . Sure, I will use the existing structures or platforms to support the piping after providing adequate flexibility.

"Many Tkx"