Learn more about START-PROF pipe stress analysis software

Custom Pump

Review analysis results in the Loads on Nozzles and Equipment Table. See also How to Reduce Nozzle Loads in START-PROF. Use the Other Pump object to verify loads on pumps such as API 676 Positive Displacement Pumps and similar equipment.

Properties

 

Property

Description

Name

Element identifier. When checked, displays in 3D view.

Auto calculation of nozzle temperature movements

Automatically calculates nozzle thermal movements using DX*α*(T-Ta), DY*α*(T-Ta), DZ*α*(T-Ta), where α is the thermal expansion coefficient from material properties, T is operating temperature, Ta is ambient temperature, and DX, DY, DZ are distances from pump center. Clear this checkbox to enter movements manually.

Material

Material selection from materials database.

Manufacturing technology

For ASME B31.1, ASME B31.3, and DL/T 5366-2014, seamless pipe always uses Wl=1.0. Electric-welded pipe Wl values come from the database. More...

When using  GOST 32388-2013, pipe properties are retrieved from different materials databases based on pipe type (seamless or welded).

Temperature

Pump operating temperature. More...

This property varies by operating mode. Click to view values across all operating modes.

Fshaft Direction

Shaft force direction relative to drawing orientation:

Pump Center Point Offsets

Reference node and offset distances to pump center (point 3 in above diagrams).

Remove restraints for hanger selection

When enabled, temporarily removes specified restraints from nozzle during variable and constant spring selection for weight case. Restraints remain active during primary analysis. This method isolates the nozzle from weight loading, allowing springs to support loads at zero displacement under pure weight. Options:

  • Remove vertical restraint: Releases only vertical restraint during spring selection

  • Remove custom restraints: Manually select restraints to release during spring selection

  • Remove all restraints: Releases all directional restraints during spring selection

Allowable Exceed Factor

Default value: 1.4. Adjust according to pump manufacturer specifications.

Suction Nozzle

Discharge Nozzle

Assign node numbers for suction and discharge nozzle connections. Specify nozzle orientation (Top, Side, End). For disconnected piping, select "Set Custom Loads" to enter loads manually.

Pump Allowable Loads Verification

Pump allowable loads are validated against input data and checked using the following equation:

Menu and Toolbar Access

To insert a pump, select the target node and navigate to: Insert > Equipment > Other Pump