As per API-570, metallic welded sleeve on pipe at low thickness locations is considered as Temporary Repair. What is the engineering reason behind due to which this type of repair can't perform like the original pipe , while the sleeve thickness and fillet weld sizes are calculated as per ASME...
Methods of repairing Storage Tanks shell with out of roundness and plumbness exceeds the dimensional tolerances given in API-653 & API-650.???
Acceptance criteria for sagging & Bulging of roof plates and methods of repair if exceeds the criteria??
We have EDC (Ethylene Die Chloride) furnace in VCM (Vinyl Chloride Monomer) plant, Design Temp. is 490C and Design Pressure is 4137 KPa, material of tube is Incoloy 800H, we have frequent failures in radiant section, by metallography we found internal oxidation of the tube, we have a NDT meter...
We have SS-304 pipeline to handle the recovery of Vinyl Chloride from PVC reactor, it has moisture causing HCL, there is no problem with SS-304 pipeline but Ball Valve of SS-304 installed on this line having corrosion.
Kindly guide how to overcome this problem either by material upgradation or...
