PASS/EQUIPWorking with PASS/EQUIPData input → Main data input

3.18. Main data input

You can start building the model from a cylindrical shell or conical transition or from any head. First component is placed from zero position along Z-axis: from left to right for horizontal vessels and from the bottom up for vertical vessels. The following components are joined or inserted to existing model components.

Fig. 1. “Components” menu

After you select "Components" Add (or press the corresponding icon in the right column of the screen), possible joint or insertion points are determined and you will be asked to select the desired joint or insertion location:

Fig. 2. Model building

After the new component is placed, a dialog with all required dimensions, materials and load properties data will be displayed. To input data, press “Enter” in the desired field. Component properties will then be recalculated if necessary.

To calculate thickness, allowable pressure and other properties without existing the component properties window, use the "Calculate values" button.

Component name

Set component name ("Cylindrical shell No…" is used by default). This name will be used during editing, deleting and assigning of adjoined components, and displaying output.

Code

Set the standard to be used for analyzing this component. When you change the selected regulatory documents, input data indications are changed as well, and their values are automatically recalculated if necessary. The code (normative document) can be assigned individually for each component, i.e. GOST 34233.2-2017 for shell and ASME VIII-1 for nozzle. At that, if during calculation the nozzle requires the shell parameters calculated as per ASME, they will be calculated, despite the shell code specified.

Temperature

Temperature, at which material properties in operation state are calculated.

Design pressure

Internal or external pressure in operation state. Does not include hydrostatic pressure of liquid, if present. Hydrostatic pressure for each component is calculated individually based on fill estimation. Excessive pressure with allowance for hydrostatics is calculated using the following rule (for external pressure p is negative):

p¢=p+r×g×h, if p is internal, or if p is external but |p|<|p+r×g×h|;

p¢=p, if p is external and |p|³|p+g×h|

Design values calculation

To calculate thickness, allowable pressure and other properties without existing the component properties window, use the "Calculate values" button. These parameters are defined more simply and approximately, without consideration for filling of the vessel, influence of the neighboring components, etc. The final result of calculation may differ from this value.

Standard dimensions

By this command you can select a component from standard items database via clarifying filters (from more general parameters to the particular ones).

 

See also:

Material

Negative tolerance

Weld strength ratio

Insulation and lining

Low-cycle fatigue

Defects according to GOST 34233.11-2017

Space in the component