This standard specifies the basic methods and requirements of unit steam blowing for fossil power construction project.
This standard is applicable to various newly constructed, extended and renovated fossil power construction projects with a unit capacity of 300MW and above, and for reference of those projects with a unit capacity of less than 300MW.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Rules
5 Selection of Steam Blowing Parameters
6 Temporary System Installation
6.1 Valve
6.2 Pipes and Support & Hanger
6.3 Particle Collector
6.4 Target Holder Assembly
6.5 Blowing Silencer
7 Steam Blowing
7.1 Essential Conditions Prior to Steam Blowing
7.2 Key Points for Steam Blowing Process
7.3 Steady Pressure Steam Blowing
7.4 Energy Storage Reduced Pressure Steam Blowing
7.5 Steam Blowing for Circulating Fluidized Bed Boiler
7.6 Steam Blowing for Gas Turbine Heat Recovery Boiler
8 Quality Criteria for Steam Blowing
9 Safety, Health and Environment Management
Appendix A (Informative) Application of Pressure Drop Method in Blowing Process
Appendix B (Informative) Reacting Force Calculation of Steam Exhaust Pipe in Blowing
Appendix C (Informative) Typical Structure of Particle Collector
Appendix D (Informative) Structural Diagram of Common Target Holder Assembly
