Cracks are on the Pipe (Base Metal) only. Not in weld area. They can be found on straight section, but some bend area too. There is no indication for Corrosion under the insulation.
Thanks very much for your concern. Cracks are not manufacturing or fabrication but it is in-service damage.Crack orientation is in all position like longitudinal or cross section etc.
Hello,
I am facing an issue in our Hydrogen line. There is crack on base metal from the outer side. Inside the fluid is Hydrogen and there is no crack. Pipe thickness is 42mm, Process Temp and pressure is 180 oC and 290barg respectively. Plant commissioning date is 1992. In April 2015, I noted...
Hello,
I am facing an issue in our Hydrogen line. There is crack on base metal from the outer side. Inside the fluid is Hydrogen and there is no crack. Pipe thickness is 42mm, Process Temp and pressure is 180 oC and 290barg respectively. Plant commissioning date is 1992. In April 2015, I noted...