Summary:

The objective of this FEA is to performed design evaluation of centrifugal pump assembly which is installed on FPSO as per API 610.  Centrifugal pumps are widely used in oil and gas industry and are subjected to various loads during operation. The most common loads are self-weight, Internal pressure, Nozzle loads, and the Motion loads. These loads will have a direct effect on the functionality of the pump and FEA plays an important role in the design evaluation to comply with the industrial codes such as API 610.

Scope:

The objective of this FEA is to perform stress analysis on Pump casing and Pump support during operating condition and results evaluation as per API 610 industrial code

Methodology:

Pump assemblies are subjected to complex static and dynamic loads during the operating conditions. The main static loads on the centrifugal pump assembly are the Self-weight, Internal pressure, Nozzle loads, and Motion loads, the base frame and the casing should be able to withstand these loads. Motion loads are due to the FPSO linear and rotational accelerations, Linear static structural analysis is performed to evaluate the worst motion loads for a set of 128 load cases. Bases on the worst-case motion load combination, the pump assembly is evaluated for the Internal pressure of (1.9 MPa) Self-weight and 2x API nozzle loads. Stress results are evaluated against the allowable stress limit as per API 610. Bolt and weld connections are evaluated as per Eurocode

Conclusion:

Stress results are evaluated and compared against the acceptance stress limit as per API 610. Bolt and weld connections are evaluated as per Eurocode and utilizations are tabulated. Further, the pump design is evaluated for dynamic loading.