Applies To
Product(s):	AutoPIPE Vessel
Version(s):	ALL
Area:	Calculations
Date Logged & Current Version	January 2025 45.00.03.001

Problem:

The following message appears when using AutoPIPE Vessel,

587 - NOZZLE N1: nozzle neck thickness < required thickness per UG-45.

why and how to avoid?

Solution:

This error message appears when the nozzle neck thickness is less than the required thickness according to UG-45.

In this case, the required nozzle neck thickness as per UG-45 is 0.14 inches (without mill tolerance of 12.5%). After considering the mill tolerance of 12.5%, the required nozzle neck thickness as per UG-45 is 0.16 inches, which is higher than the nominal nozzle neck thickness of 0.154 inches.

This error message can be avoided by using a higher nozzle neck thickness (greater than 0.16 inches).