Fluid Flow mode results for the F1 example simulation

The following table shows the relief valve back pressures for the case in which total power failure occurs (FF2) at the required flow conditions.

Relief valve RV1 has a high back pressure. We analyze the inlet and tail pipes at RV1 and find that tail pipe PT1 is undersized. The following table shows the tail pipe sizing in which relief valve RV1 is at rated flow conditions. Values in the Original column represent the current simulation data which do not meet design criteria. Values in the Recommended column represent enlarged inlet and tail pipes to satisfy the 3% rule and 10% superimposed backpressure.