Specify External Loads? - PV Elite - Help - Hexagon

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For leakage computations to be performed, the external loads acting on the flange must be specified. Select this option to enter the loading data. The loading data is typically from pipe stress analysis software, such as CAESAR II.

Flanges are frequently subject to external forces and moments, in addition to internal pressure. The software calculates a roughly equivalent pressure for flanges loaded axially and/or in bending using the following formula:

Peq = Pdes + 4 * F / 3.14 G2 + 16 * M / 3.14 * G3

Where:

Peq = Equivalent pressure, psi

Pdes = Design pressure, psi

F = Axial force, lbs

M = Bending moment, in-lbs

G = Diameter of gasket load reaction, in.

The software then uses the equivalent pressure as the design pressure.