Hi, friends. We experienced recently a recurrent leak problem with tube to tubesheet welding joints in a sulfur recovery unit waste heat boiler (firetube, Rentech). After 4 years in every shutdown (cooling) welds began to leak, we made several repairs before take a decision to retube.Tube...
Good afternoon gentlemen, recently here in our plant was carried out maintenance works of some vertical submerged pumps VTP type, those equipment run with Effluent Water and was manufactured by Ingersoll-Dressser, the bowls and the column pipe are carbon steel, It shows moderate External...
Pan, hi again. Prex have the reason, when you calculate the required thickness you need to estimate a STRUCTURAL THICKNESS also, is refer to the minimun thickness neccesary resist the weight of the pipe distance between supports, the weight of valves and the weight of the fluid.
Genereally, in...
PAN, when you test those pipes with a portable PMI (material identification) like NITON, the composition looks identical. In manufacturing, I understand, if a A106 pipe that don't reach the specification for inclusions could be stamped like A53.
Killed don't refer to the process that eliminate...
Hi, recently we carried out a thickness measurement of a PIPE by ultrasonics and find low values respect to the nominal, the problem, hidrogen blistering of a 12 months pipe, probably the pipe was inadecuate A53.
Now the question is, what is the better method or test in order to differentiate a...
Hi, recently we carried out a thickness measurement of a PIPE by ultrasonics and find low values respect to the nominal, the problem, hidrogen blistering of a 12 months pipe, probably the pipe was inadecuate A53.
Now the question is, what is the better method or test in order to differentiate a...
What is the applicable code to support a pressure test after welding repair in a control valve body. We review ASME B16.34a but this code refers to New valves, Can we use this procedure? Do you know another code or practice more specific? I think that is not convenience use it (B16.34b) because...
What is the code applicable for pressure test of a control valve repair body? I was rewiewing the B16.34a but I don't read nothing about "repairs". It's reasonable performance a test pressure with the procedure for a new valve?
