1 Scope
This standard specifies technical requirements for order, model, performance, technology, inspection and test, painting, marking, packaging and delivery document together with installation etc. with regards to attemperating and pressure reducing devices.
This standard is applicable to steam-medium attemperating and pressure reducing devices, attemperating device and pressure reducing device (hereinafter referred to as "device"); the working pressure of inlet steam is not greater than 27MPa and working temperature is not greater than 590℃.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB 713 "Steel Plates for Boiler and Pressure Vessels"
GB 912 "Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels"
GB/T 983 "Stainless Steel Covered Electrodes"
GB 3087 "Seamless Steel Tubes for Low and Medium Pressure"
GB/T 3274 "Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels"
GB/T 5117 "Carbon Steel Covered Electrodes"
GB/T 5118 "Low Alloy Steel Covered Electrodes"
GB 5310 "Seamless Steel Tubes and Pipes for High Pressure Boiler"
GB/T 8110 "Welding Electrodes and Rods for Gas Shielding Arc Welding of Carbon and Low Alloy Steel"
GB/T 10868 "Steam Converting Valve for Power Station"
GB/T 10869 "Control Valves for Power Station"
GB/T 12229 "General Purpose Industrial Valves - Specification of Carbon Steel Castings"
GB/T 12243 "Spring Loaded Safety Valves"
GB/T 20801.3 "Pressure Piping Code-Industrial Piping - Part 3: Design and Calculation"
GB/T 20801.4 "Pressure Piping Code-Industrial Piping - Part 4: Fabrication and Assembly"
GB 50236 "Code for Construction of Field Equipment, Industrial Pipe Welding Engineering"
JB/T 1613 "Specification for Welding of Boiler Pressure Parts"
JB/T 2636 "Boiler Pressure Parts - Metallographic Examination and Fracture Test of Weld Joints"
JB/T 3375 "Rules for Receiving Acceptance of Materials for Boiler Construction"
JB/T 3595 "Valves for Power Station-General Requirements"
JB/T 4730.2 "Nondestructive Testing of Pressure Equipments-Part 2: Radiographic Testing"
JB/T 4730.3 "Nondestructive Testing of Pressure Equipments-Part 2: Ultrasonic Testing"
JB/T 4730.4 "Nondestructive Testing of Pressure Equipments-Part 2: Magnetic Particle Testing"
JB/T 4730.5 "Nondestructive Testing of Pressure Equipments-Part 5: Penetrant Testing"
JB/T 5263 "Specification for Steel Casting for Power Station Valves"
JB/T 9624 "Specification for Safety Valve of Fossil Power Station"
JB/T 9625 "Specification for Pressure Retaining Casting of Boiler Pipe Fittings"
JB/T 9626 "Specification for Boiler Forging"
NB/T 47014 "Welding Procedure Qualification for Pressure Equipment"
3 Order Requirements
For the convenience of user order, Table A.1 provides sample f
1 Scope
2 Normative References
3 Order Requirements
4 Model
5 Structure Type
6 Performance Requirements
7 Technical Requirements
8 Inspection and Test
9 Painting, Marking, Packaging and Delivery Documents
10 Installation, Operation and Maintenance
Appendix A (Informative) Order Requirements
Appendix B (Informative) Typical System Legend for Attemperating and Pressure Reducing Devices
Appendix C (Informative) Reference Flow Rate Table for Pipeline Media
