I have question about failure of welds and surrounding pipe.
1) a weld failed in a brittle fracture mode and
2) the piping was above the minimum design metal temp and
3) the piping was verified to meet the original mechanical specification
Would the surrounding un welded pipe many feet from the original failure, show evidence of brittle failure or would it show some deformation prior to failure?
I dont know what failed first. I just thought it would be odd for piping to fail as shown in the pictures at http://www.weldingdata.com/CSPipeFailurePics.htm
just because of a weld failure.
I was just wondering if piping would fracture like this just due to another failure.
The pressure was around 200 PSI. The temp is unknown but the ambient was around 5 DegF. The pipe carried compressed inert gas.
For comparison, there are some very interesting pictures of compressed gas cylinders tested to failure at http://www.taylor-wharton.com/cylinder_report.htm