| Applies To | |
| Product(s): | AutoPIPE Vessel |
| Version(s): | ALL |
| Area: | General |
| Date Logged & Current Version | June 2023 43.01.01.011 |
Problem:
How category and nominal stress parameters affects the material safety factors?
Solution:
Answer is, there is no impact of category parameters on material safety factors. But Nominal stress parameter affects the safety factor and hence nominal design stress.
If you want to know how to change the safety factors, refer wiki here
If you are designing equipment with CODAP, in Characteristics field we have two cells, Category & Nominal Stress as follows,
Based on the selection of Construction Category, Factor z changes, (Weld joint efficiency).
Nominal design stress values depends on the Nominal stress type selected.
But now even after we change the nominal stress type there is no change in the safety factor.
We logged a bug for this and our team is working on it and will be implemented in upcoming version.
Workaround:
Step 1: Choose your required Nominal stress type,
Step 2: Change default safety factor to User Defined
Step 3: Again change Default Safety Factor to Code Values
This will refresh your selection and you can see the correct safety factor as well as nominal design stress.