Determination of the welding coefficient for tower equipment
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There is a tower-type equipment unit, about 40 meters high and with a diameter of 1.6 meters; it handles a second type of medium and is classified as a category II vessel. What should be the value used for the welding joint coefficient of its main structure?
The selection of the weld joint coefficient is related to the weld type, inspection ratio, and acceptable quality level. Since local inspection is possible for the second group of media, the weld joint coefficient can be set at 0.85. If it is special material equipment, such as titanium, zirconium, etc. To minimize the wall thickness, a welding joint factor of 1.0 can also be used
Both cylinder 1 and 0.85 are fine; it depends on your company
Some people believe that due to the high pressure and height of the tower, a welding joint coefficient of 1 should be used; I personally think this view is rather questionable.
The selection of the welding joint coefficient has nothing to do with the tower height!
The welding joint coefficient is related to the thickness used in calculations; if the weld area is subject to stress in certain cases, a value of 1.0 must be used, depending on the requirements of the project
We design the welding coefficient of the cylinder to be 0.85, unless there are special requirements from the process.
The welding joint coefficient can be selected in accordance with GB150
In fact, the selection of the welding joint coefficient is related to the issue of the inspection ratio; unless standards and specifications explicitly require a value of 1, values of 1 or 0.85 can also be used, as both meet the requirements – it’s just a matter of determining which one is more appropriate. Personally, I think 0.85 is a more reasonable choice. To increase the requirements, select 1; it is possible but not economical. There is no best design, only a more reasonable one.