Pipe Radial Growth in Thermal condition
Pipe Radial Growth in Thermal condition
(OP)
Hi friends,
A guide support is provided in a 600NB horizontal Pipe under 500 deg C. The guide support is Zero mm gap in lateral direction & axially free movement. But the Support Clamp ID is match with pipe OD.
I have a doubt, due to larger pipe size, the radial movement is significant. So, in that case how we can take care this radial growth while designing support clamp inside diameter.
A guide support is provided in a 600NB horizontal Pipe under 500 deg C. The guide support is Zero mm gap in lateral direction & axially free movement. But the Support Clamp ID is match with pipe OD.
I have a doubt, due to larger pipe size, the radial movement is significant. So, in that case how we can take care this radial growth while designing support clamp inside diameter.





RE: Pipe Radial Growth in Thermal condition
Post a sketch of the guide. A picture is worth a thousand words.
RE: Pipe Radial Growth in Thermal condition
Forgot to add. There are many piping engineers whom do not consider radial growth of a large bore pipe at temperature at guide locations and the increased gaps required to cater for thermal radial growth. I've come across this situation many times - standard gaps specified which are no good for large bore high temperature lines.
RE: Pipe Radial Growth in Thermal condition
RE: Pipe Radial Growth in Thermal condition
prognosis: Lead or Lag
RE: Pipe Radial Growth in Thermal condition
There won't be any axial movement between the pipe clamp and the pipe under either temperature changes or water hammer/vinration. When the pipe moves from thermal growth, the pipe clamp will be dragged along (axially) and pushed sideways, moving across those lower supports until the two stops are hit.