![]() First, the extent of the HAZ (Heat affected zone) of a weld, in which the magnitude of property change depends primarily on the base material, the weld filler metal, and the amount and concentration of heat input by the welding process. ![]() Weld spacing in tanks depends on several factors. And writing it was more difficult, because of the little time I have (As most of you in the Oil and Gas Field).įirst let me ask you a question: In which plane are tank shell stresses higher, in a vertical or an horizontal plane? Boy, I have to tell you, thinking for this article was difficult, because it involves many figures and tables that are present in the API 650 and API 653 standards. Following with the subjects that you should study for the exam, today we will have a short explanation of the reason behind some of weld spacings in tank elements.
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