| Applies To | |||
| Product(s): | AutoPIPE, | ||
| Version(s): | All | ||
| Area: | Modeling | ||
| Original Author: | Bentley Technical Support Group |
Dec 2014, AutoPIPE V8i 09.06.01.10
Problem:
Modeling a Nozzle per WRC 297?
Solution:
The following fields of data are available when WRC 297 is selected as a Flexibility Method on a nozzle dialog screen:
Enter in values for L1, L2, and Direction of vessel axis to calculate the nozzle flexibility.
Copied from the On-line help:
L1 = distance from the center of the nozzle to either vessel end or to the face of the nearest internal stiffening attachment (e.g., ring).
L2 = Enter the distance to the other end of the vessel (or nearest internal stiffening attachment in that direction).
Meaning, measuring from the center of the nozzle in one direction along the axis of the vessel to a point where the vessel end or vessel internal stiffener ring, enter the value as L1. Repeat the same measurement in the opposite direction along the vessel to a point where the vessel ends or vessel internal stiffener ring, enter the value as L2 (note, L1 and L2 are interchangeable values with regards to the nozzle flexibility calculation, see online help "Nozzle Flexibility Calculations" for complete details).
Note: When looking at the Nozzle Stiffness values on the dialog screen be sure to read the dialog text "Nozzle stiffness (E6):". The (E6) means that the value in the fields below are multiplied by E6, with the given units.
Example, on the dialog screen Rad = 3.1223 lb /in, but in the output report it is printed as Krad=3122285.75 lb/in. Both values and units are correctly printed.