This part of GB/T 16507 specifies the strength calculation of pressure parts used in water-tube boilers and the designed permissible stress of materials, and determines the method for verifying the maximum permissible working pressure of parts.
This part is applicable to the pressure parts of water-tube boilers defined in GB/T 16507.1, including boiler drum, header drum, tube, pipeline within the range of boiler, convex head, flat lid and cover plate, tee joint and other non-rectangular components.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Permissible Stress
6 Calculated Wall Temperature
7 Calculation Pressure
8 Efficiency
9 Component Thickness
10 Required Thickness
11 Opening Reinforcement
12 Methods for Verifying the Maximum Permissible Working Pressure of Component
13 Additional Thicknesses
14 Maximum Permissible Working Pressure
15 Additional Stress Check
16 Structural Constraint and Requirements
Appendix A (Normative) Low-cycle Fatigue Life Calculation for Boiler Drum
Appendix B (Informative) Method for Adopting the Designed Additional Pressure ΔPa
Appendix C (Informative) Adoption of Process Additional Thickness under General Conditions
Appendix D (Informative) Approximation Algorithm for Elastic Section Modulus of Opening-attenuation Section Wx
