API 6F1 : 1999
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Hardcopy , PDF
04-14-1999
English
04-01-1999
0 Introduction
1 Scope and Applicability
1.1 Effects of Fire Environment
1.2 Significant Variables
2 References
3 Performance of API and ANSI end Connections in the Standard
Fire Test of Specification 6FA
3.1 Introduction
3.2 Makeup Assumptions
3.3 General Predictions
4 Comparison of Predictions and Test Data
5 Conclusions and Guidelines
Appendix A Analysis of ANSI and API Flanges
Appendix B Analysis of Clamp Type Connectors
Appendix C Retaining Loads and Unseating Conditions for BX
Gaskets
Appendix D Effective Clamp Stiffness Calculations
Appendix E Metric Conversions
Figures
1 Typical Calculated Temperatures of Joints
2 Average Calculated Temperatures of Various Joints Carbon
Steel at 30 Minutes
A-1 Correlation of Temperature Gradients Across Flanges
A-2 Idealized Model of Flanged Joint
A-3 C Factor for Equation A-5, 6B Flanges
A-4 C Factor for Equation A-5, 6BX Flanges
A-5 C Factor for Equation A-5, ANSI Flanges
A-6 Stress/Strain SA 193 B7
B-1 Correlation of Temperature Difference Between Clamp and Hubs
B-2 Radial Expansion Differential Calculations
B-3(a) AWHEM Clamp-Type Connection Major Dimensions
B-3(b) AWHEM Clamp-Type Connection Computer Output
C-1 Sketch of BX Gasket
D-1 Equivalent Clamp Hoop Stiffness
Tables
1 Sizes of Interest
2 Materials and Gaskets of Interest
3 Classifications
4 Classification Summary of ANSI Carbon Steel Flanges Performance
Prediction in Standard Fire Test
5 Classification Summary of 316 Stainless ANSI Flanges Performance
Prediction in Standard Fire Test
6 Classification Summary of API Flanges and Clamp Performance
Prediction in Standard Fire Test
7 Materials of Test Flanges
8 Results of Testing Carefully Instrumented Tests
9 Results of Testing Original Screening Tests
A-1 API Type RX Pressure Energized Ring Gaskets Predicted Values
for Seating and Retaining Loads
A-2 Moduli of Elasticity psi x 10(6)
A-2 Coefficients of Thermal Expansion Mean in Going from 70 deg to
Temperature in./in. x 10(6)/def F
A-3 Yield Strengths
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