Thank you all for your input. For anchored tanks it is specifically corroded weight and hence I had a confusion. The same concept is also implied in appendix V. It is the uncorroded thickness unless the corrosion is uniform and all over.
MDL is a moment about the shell-to-bottom joint from the weight of the shell and roof supported by the shell. Is this weight to be considered in corroded condition or new tank weight?
Thanks.
Please refer to API 579 appropriate parts and appendices to assess the fitness for service for the header. You will find all necessary information to take a decision.
Nozzle pipe material is SA 335 Gr. P1. Vessel is new and being transported to site. It is impractical to send the vessel back to shop. Any repair has to be done at site. API 579 is not of much help as there is no dent or change in ovality or flattening of the elbow. The nozzle being flexible has...
A pressure vessel fell from a truck. The vessel has a skirt. The vessel has 8” liquid outlet welded to the bottom head with a 90 degree elbow and is projected outside of skirt as per standard design. This liquid outlet nozzle has got twisted in the accident and the face of the flange is no more...
