API TR 6AF1 : 1998
Current
The latest, up-to-date edition.
TECHNICAL REPORT ON TEMPERATURE DERATING ON API FLANGES UNDER COMBINATION OF LOADING
English
01-11-1998
1 Scope
2 References
3 Introduction to rating charts
3.1 Introduction and scope
3.2 Material categories
3.3 Flange combined load capacities
3.4 Use of rating charts
4 Axisymmetric finite element analysis
4.1 Introduction
4.2 Finite element modeling
4.3 Assumptions
4.4 Material categories
4.5 Load cases
4.6 Analysis results
5 Flange combined load capacities
5.1 Introduction
5.2 Allowable stress criteria
5.3 Leak criteria
5.4 Stress linearization
5.5 Load rating methodology
5.6 Results
5.7 Use of rating charts
6 Conclusions and recommendations
6.1 Summary
6.2 Conclusion
6.3 Recommendation
Appendix A - Material category A
Appendix B - Material category B
Appendix C - Material category C
Appendix D - Material category D
Appendix E - Material category E
Appendix F - Material category F
Figures
1 Typical combined load capacity results
2 Load capacity results to use with example problems
3 Typical finite element meshes
4 Convection coefficients for air blowing across a 1-Ft
diameter cylinder as a function of wind speed and temperature
5 Load conditions for makeup and pressure
6 Load conditions for tension and bending moment
7 Load conditions for thermal and thermal stress analysis
8 Typical stress intensity contour plots for makeup and pressure
load conditions 7 1/6" 10,000 6BX flange
9 Typical stress intensity contour plots for tension and
bending moment load conditions
10 Typical contour plots for thermal analysis load conditions
7 1/16" 10,000 6BX flange
11 Typical stress intensity contour plots for makeup and pressure
load conditions 2 1/16" 2,000 6B flange
12 Typical stress intensity contour plots for tension and bending
moment load conditions 2 1/16" 2,000 6B flange
13 Typical contour plots for thermal analysis load conditions
2 1/16" 8,000 6B flange
14 Typical combined load capacity results
15 Load capacity results to use with example problems
Tables
1 List of materials
2 Derated values of material properties
3 List of materials
4 Derated values of material properties
5 API physical properties and material types
6 Controlling criteria identification numbers
This report is a continuation to the report on the capabilities of flanges under combined loadings (PRAC 86-21) which resulted in the publication of API 6AF.
| DocumentType |
Technical Report
|
| Pages |
245
|
| ProductNote |
This product is unavailable in Cuba, Iran, North Korea, Syria THIS STANDARD ALSO REFERS TO API Specification 6A,API Bulletin 6AF2,ANSI B l.1
|
| PublisherName |
American Petroleum Institute
|
| Status |
Current
|
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