Openings are required to attach piping, mechanical equipment and instrumentation, and to permit inspections. The physical boundary between the jurisdiction of the ASME Code and…

Problem Determine the minimum required thickness of a cylindrical shell and hemispherical heads of a welded pressure vessel designed for an internal pressure of 100…

The ASME Code procedure is as follows: 1. Calculate the value of A using the equation: where: Ro is the outside radius of the sphere.…

The equations for the maximum strength of a cylindrical shell under external pressure are established under the assumption that the shell is simply supported. For…

Figure 400-5 shows the general procedure for determining the maximum allowable external pressure on a vessel. This flow chart is based on the requirements of…

Per Code Paragraph UG-28(f), vessels intended for service under external working pressures of 15 psi or less and which are to be stamped with the…

For torispherical heads where the knuckle radius is 6% of the inside crown radius, the ASME Code equation is:

For 2:1 semiellipsoidal heads, the ASME Code equation is: where D is the inside diameter of the head. Example: Using the same vessel as in…

The ASME Code equation for spherical shells under internal pressure is: The calculated minimum thickness of formed heads is not rounded up to standard plate…

ASME Code, Section VIII, Division 1, uses an approximate equation for determining the required thickness of a cylinder subjected to internal pressure: where: t =…