	Applies To
	Product(s):	AutoPIPE Vessel
	Version(s):	V8i
	Area:	Modeling
	Original Author:	Bentley Technical Support Group
	Date Logged & Current Version	Mar. 2015 33.02.02.04

Problem:

How is the nozzle fillet radius calculated for WRC calculations?

Solution:

On the Nozzle Properties, Local load tab, the program calculates the minimum fillet according to ASME UW-16.

The default radius is equal to Radius = Throat*cos(45°)/(1-cos(45°)

The user can input the radius value or Kn/Kb coefficients in the nozzle load tab:

Where:

Kn = membrane stress concentration factor (pur tension or compression)

Kb = bending Stress concentration factor