Hoop stress in Autopipe Analysis
Hoop stress in Autopipe Analysis
(OP)
Dear All,
While was doing analysis for 8" high pressure and high temperature pipeline in Autopipe. After running report it shows that the code stress doesn't satisy for hoopstress in the launcher area. Pls help me to over come this and to make the system satisfies the code stress as per ASME.
Please tell me how can i reduce this hoop stress.
While was doing analysis for 8" high pressure and high temperature pipeline in Autopipe. After running report it shows that the code stress doesn't satisy for hoopstress in the launcher area. Pls help me to over come this and to make the system satisfies the code stress as per ASME.
Please tell me how can i reduce this hoop stress.





RE: Hoop stress in Autopipe Analysis
RE: Hoop stress in Autopipe Analysis
The parameters are as follows.
P=250 bar
t=115 deg c
size 8".
Is there any other alternative other than this to increase wall thickness, please suggest
RE: Hoop stress in Autopipe Analysis
Independent events are seldomly independent.
RE: Hoop stress in Autopipe Analysis
You could increase wall thickness or decrease pipe diameter, failing that you could reduce the internal pressure but I guess that not an option.
RE: Hoop stress in Autopipe Analysis
RE: Hoop stress in Autopipe Analysis
RE: Hoop stress in Autopipe Analysis
Check again which Code applies in your launcher area. See my post above.
RE: Hoop stress in Autopipe Analysis
Well spotted- you are correct 250 bar is not really high pressure -senior moment on my side. However it is still probably due to the software calculating the hoop stress in accordance with B31.3 rather than the applicable Code formulae.