A Caution message in AFT Impulse is of less importance than a full warning. While some Caution messages may be left unresolved without affecting model results, they should never be ignored by the user.

CAUTIONS

• Assigned Flow at Junction X has a constant flow rate during the transient...

• Check Valve closed at Junction X

• Constant friction factors were used during the transient analysis

• Flow is negative through Junction X. Loss factors may be in error

• Head output does not have meaning for zero g systems

• Head rise across fixed flow pumps is referenced to system g level

• Junction X exceeded maximum event messages

• Junction X has a density change across it

• Junction X uses the Dimensional Check Valve Type Y which has a diameter of Z

• Pipe X length is shorter than the elevation change (between Junction Y and Z)

• Pipe X segment length Y is shorter than the elevation change.

• Pump X is using a Standard Pump Curve and flow exceeded End of Curve

• Pump with Check Valve closed at Junction X

• Some four quadrant data was based on estimated, not measured, data

• The air volume entering through Junction X exceeds 100% of a pipe station's computing volume

• The performance of Pump Junction X may be affected by fluid viscosity

• Transient data did not extend to Stop Time at Junction X