srm7584
Mechanical
- Jun 1, 2008
- 9
Hi
I feel piping and piping support is an art, which comes from a rich work experience and sharing the learning so as others can avoid the mistake and can deliver good and safe design to customer an ultimately to the people.
I am a budding piping engineer involved mostly in the pipe stress analysis. I was analyzing the system and got jumbled in some questions. So just posting here, request all the members throw some light on the issues.
My doubt is how to appropriately support the pipe. There are NO strict rule written but when I gone through some technical articles I found some guidelines, which I am deriving in steps so as to focus in the problem. I request the forum member to correct if I am wrong
1. First follow the standard spacing spans from ASME B31.1 power piping code to limit the sagging. The support is only the vertical to take gravity loads.
2. The second step is to find the thermal movements and then adjust the guide gaps so as to allow the thermal movements, this will produces very optimal loads and thus support will not experience much loads in the thermal and will produce optimal loads.
3. If the support is required to divert or stop the pipe growth then the zero gaps should be allowed and see the ASME code stresses. These may or may not reduce the anchor loads.
Now the problem is if we allow the support gaps as per the thermal movements then each support will be a special support and has to design Whether this will be an economical solutions?
Should we restrict to standard available support and make the layout changed till it reduces to permissible loads? The layout changes also depend upon the possibilities.
Giving large gaps may tend to increase the vibration of the piping, which may not be a good?
Is there any guideline, which gives any relation with the diameter to support loads?
I shared my thought; please let me know the views.
I feel piping and piping support is an art, which comes from a rich work experience and sharing the learning so as others can avoid the mistake and can deliver good and safe design to customer an ultimately to the people.
I am a budding piping engineer involved mostly in the pipe stress analysis. I was analyzing the system and got jumbled in some questions. So just posting here, request all the members throw some light on the issues.
My doubt is how to appropriately support the pipe. There are NO strict rule written but when I gone through some technical articles I found some guidelines, which I am deriving in steps so as to focus in the problem. I request the forum member to correct if I am wrong
1. First follow the standard spacing spans from ASME B31.1 power piping code to limit the sagging. The support is only the vertical to take gravity loads.
2. The second step is to find the thermal movements and then adjust the guide gaps so as to allow the thermal movements, this will produces very optimal loads and thus support will not experience much loads in the thermal and will produce optimal loads.
3. If the support is required to divert or stop the pipe growth then the zero gaps should be allowed and see the ASME code stresses. These may or may not reduce the anchor loads.
Now the problem is if we allow the support gaps as per the thermal movements then each support will be a special support and has to design Whether this will be an economical solutions?
Should we restrict to standard available support and make the layout changed till it reduces to permissible loads? The layout changes also depend upon the possibilities.
Giving large gaps may tend to increase the vibration of the piping, which may not be a good?
Is there any guideline, which gives any relation with the diameter to support loads?
I shared my thought; please let me know the views.
