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Click CodeCalc
or if you are running the software through PV Elite, click Component Analysis 
on the Home tab.
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Click New
.
This allows you to specify the current analysis type.
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Click Shells and Heads
on the Home tab.
A blank input screen displays.
Shell analysis can be defined on the Shell/Head tab of this screen. You can use the Tab key to move down the column of data. Many of the boxes display default values.
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Type 1 in the Item Number box. You must type a value in this field or the software cannot perform the analysis. It is a good practice to number the different calculations sequentially.
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Press Tab twice.
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Type Spherical Head in the Description box. The information in this box can be the part number or a short description of the part. This is an optional input.
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Select ASME Sec VIII Div 1 for the Analysis Type.
The next four boxes govern the pressure and temperature.
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Type 100 (assuming that you are using English units) in the Design Internal Pressure box.
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Type 700 in the Design Temperature for Internal Pressure box.
When you press Tab, the software pauses momentarily to check whether the material specified has an allowable stress greater than zero at the temperature entered.
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Click the button to view the allowable stress. The allowable stress for SA516-70 material is 18,100 psi at this temperature. This is precisely the value that CodeCalc extracted from the material database.
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Type 15 in the Design External Pressure box.
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Type 650 in the Design Temperature for External Pressure box.
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Type SA-516-70 in the Material box.
The software checks the database and updates the allowable stresses.
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Another way to select a material is from the list of materials in the database. To see this list, click
to display the materials list.
Each major material classification is divided into columns.
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View the parameters for a specific material by clicking the material name.
These parameters can be viewed and modified using Edit/Add Materials 
on the Tools tab.
Scan the yield stresses for an exact material match at the operating temperature.
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In the Joint Efficiency Longitudinal Seams box, type the value of E. This is the longitudinal joint efficiency to use in the calculator. For full radiography, type 1.
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Select the box for Include Hydrostatic Head Components.
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Type 38 in the Operating Liquid Density box.
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Type 54 in the Height of Liquid Column (Operating) box.
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Type 72 in the Height of Liquid Column (Hydrotest) box.
This particular vessel is a horizontal drum that operates in a partially filled position. When the shop hydrotests the vessel, it is filled and in the horizontal position.
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Select the Geometrytab.
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Select Spherical for Type of Shell.
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Specify the diameter basis (OD) for an outside diameter measurement (and calculation).
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Type 72 in the Diameter of Shell/Head box.
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Type 0.5 inches in the Minimum Thickness of Pipe or Plate box.
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Type 0.5 inches in the Nominal Thickness of Pipe or Plate box.
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Type 0.0625 inches in the Corrosion Allowance box.
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For this example there is no reinforcing ring required for internal pressure, so select None for the ring type.
You have now completed the spherical head input. Your screen should look like the following figure:
You can view the drawing of the current item at any time by selecting the Drawing tab.
This horizontal tank has two additional sections, the shell and the elliptical head on the other end.
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Click Shells and Heads
on the Home tab.
This adds a new element. The new element has identical inputs to the element before it except for a new Item Number on the Design tab.
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Type 2 in the Item Number box.
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Type Cylinder in the Description box.
When entering new components, be sure to type appropriate descriptions in the Description field. This will make your finished reports clearer and easier to follow.
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Select the Geometry tab to enter the shell type.
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Because this is a cylinder type, select Cylindrical from the Type of Shell.
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Type 180 inches for both the Design Length of Section and the Design Length for Cylinder Volume Calculations.
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Click Shells and Heads
on the Home tab.
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Type 3 in the Item Number box, and type Elliptical Head in the Description box.
The data from the previous element is carried forward, so you will only have to modify the shell/head type.
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Select the Geometry tab.
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Select Elliptical for Type of Shell.
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Type 2 for a 2:1 elliptical head.
You are now ready to analyze these three components for internal pressure and hydrostatic head considerations.
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Save the file, and click Analyze File
on the Home tab.
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Select the Analysis tab.
Your screen will resemble the following figure:
