Evaluate pump discharge nozzle loads - CAESAR II - Reference Data

CAESAR II Applications Guide (2019 Service Pack 1)

PPMProduct
CAESAR II
PPMCategory_custom
Reference Data
Version_CAESAR
11.0 (2019)

Create a copy of your Tutorial A file to use for Tutorial B

  1. Open CAESAR II from the Windows Start menu.

    The CAESAR II main window displays.

  2. In the main window ribbon, click Home > Open .

  3. In the Open dialog box, navigate to the file from Tutorial A, C:\ProgramData\Intergraph CAS\CAESAR II\<version number>\Examples\Tutor-A.c2.

  4. Make a copy of Tutor-A and rename it Tutor-B.

  5. Select Tutor-B.C2, and click Open.

Perform analysis on the pump using the discharge loads from the piping analysis

  1. In the main window ribbon, click Analysis > Components/Equipment > Equipment Analysis .

    The Equipment Analysis dialog box displays.

  2. Select API-610 in the Equipment pane on the left, and then click Add .

    Pump1, with a default Suction nozzle, Discharge nozzle, and Load Case Sets, displays in the Equipment pane.

  3. Select Pump1 in the Equipment pane, and specify the following properties on the Pump Input tab:

    • Equipment Name: Bottoms Pump

    • Description - Tutorial B. Check discharge nozzle.

    • Allowable Load Multiplier: 1.00

    • Centerline Direction Cosine X: 1.00

  4. Select Suction in the Equipment pane, and specify the following properties on the Nozzle Input tab:

    • Orientation: End

    • Nominal Diameter: 10 in. (250 mm)

    • Location from Pump Center, DX (in.): 15.00

    • CAESAR II Node Number: 105

      For this tutorial, the node number is arbitrary and does not exist in the model. In a production analysis, the node number identifies a node containing suction nozzle loads from the static analysis.

    • CAESAR II Output File - C:\ProgramData\Intergraph CAS\CAESAR II\11.00\Examples\Tutor-B

  5. Select Discharge in the Equipment pane, and specify the following properties on the Nozzle Input tab:

    • Orientation: Top

    • Nominal Diameter: 8 in. (200 mm)

    • Location from Pump Center, DY (in.): 20.00

    • Location from Pump Center, DZ (in.): 12.00

    • CAESAR II Node Number: 5

      This node number corresponds with the first node in the model, which defines the discharge nozzle boundary condition in the model.

    • CAESAR II Output File: C:\ProgramData\Intergraph CAS\CAESAR II\11.00\Examples\Tutor-B

  6. Select Load Case Sets in the Equipment pane.

  7. For the Load Cases: Bottoms Pump - Discharge grid at the top of the Load Case Sets tab, click Add Case , and then select Import Load Cases.

    The Select Load Cases dialog box displays the load cases from the CAESAR II output file.

  8. Select the OPE and SUS load cases, and click Accept.

    The load cases display in the Load Cases: Bottoms Pump - Discharge grid.

  9. For the Load Cases: Bottoms Pump - Suction grid at the top of the Load Case Sets tab, click Add Case > Add Custom.

    A load case numbered 1u displays.

    Because the suction nozzle has no loads for this model, leave the force and moment values at 0.

  10. Create two load case sets:

    • Select the suction load case and the OPE discharge load case. For the Load Case Sets grid at the bottom of the Load Case Sets tab, click Create a Set from Selected Load Cases .

    • Select the suction load case and the SUS discharge load case. Click Create a Set from Selected Load Cases .

      Two load case sets display.

  11. Click Save , and name the file Tutor-B Pump.

    The software creates a .C2eDB file.

  12. Click Analyze .

    As the analysis runs, the software places messages in the Event Log. A report displays on the Output tab when analysis completes.

  13. On the Output tab, click Next Page to advance to new pages.

    The report displays analysis results on the discharge nozzle for the OPE and SUS load cases.

  14. Click Save .

  15. Click Print to print the report, or click Export to save the report in Excel, Word, or PDF format.

    Page 3 of the report shows that the analysis exceeds API Table 5 limits for the operating load case.

When the nozzle load components are greater than the Table 5 values but less than two times the Table 5 values, the pump might still pass (when permitted by purchaser specifications) if other checks are within their allowable values. However, this evaluation cannot be used because loading on the suction nozzle is unknown.

Piping loads on the pump discharge nozzle exceed API 610 allowable stresses.