From which pressure is necessary to use the calculation as per Appendix F? For pressure of 2.0 kPa is necessary to use the AppendixF? If the weight of roof + shell exceed the internal pressure multiplied by the cross-section area of of the nominal tank diameter I need to use the Appendix F?
Thanks..
Another question...
Can I use a top angle manufactured by two plates welded in the roof-shell joint?
Design pressure: 1.961kPa and (-)0.981kPa (vaccum)
Design Temp.: 150ºC
Someone can help me with the minimum bottom thicknesses in tanks at the end of the in-service period of operation?
A friend said that I can't use a tank with a thickness below of 6.0mm (API 650: 5.4.1-All bottom plate shall have a corroded thickness of not less than 6.0mm) but a think this is...
The intermediate head is seamless and calculated per UG-32 (E=1). The shell is calculated per UG-27 (E=0.55) and the joint is a butt weld joint and not a lap joint.
The drawing is identical the sketch UW 13.1-(e). The required thickness for internal pressure is 6mm for external pressure 10mm...
But how can I design this welds? Where do I use the 55% and 75% of the stress material?
I´m studing a calculation sheet and the designer calculated the shell using E=0.55 and the head E=1. It´s correct? The weld calculation shall not be provided in the calculation sheet?
Thanks.
I have some doubts about the joint efficiency in the intermediate head attached to shell indicated in the FIG. UW-13.1(e). According UW-13(c)(2): "The butt weld and fillet weld shall be designed to take shear based on 1.1⁄2 times the maximum differential pressure that can exist. The allowable...
