1 General Provisions
1.0.1 This code is formulated with a view to follow out relevant national technical and economic policies in design of gas transmission pipeline engineering, unified specification, and realize state-of-art technology, economic feasibility, safety and usability, guaranteed quality.
1.0.2 This code is applicable to design of overland gas transmission pipeline engineering.
1.0.3 Design of gas transmission pipeline engineering shall be in compliance with the following principles:
1 Environment protection, energy conservation and land conservation; manage the interrelation of railway, highway and river all right;
2 Adopt advanced techniques and made efforts to absorb new scientific and technological achievements in both China and abroad;
3 Optimize design proposal, determine the economic feasibility of gas transmission technology and optimal technological parameter.
1.0.4 Design of gas transmission pipeline engineering, not only the requirements stipulated in this code but also those in the current relevant ones of the nation shall be complied with.
Contents
1 General Provisions
2 Terms
3 Gas Transmission Technology
3.1 General Rules
3.2 Process Design
3.3 Process Calculation and Analysis
3.4 Safety Discharge of Gas Transmission Pipeline
4 Route
4.1 Route Selection
4.2 Division of location class
4.3 Pipelining
4.4 Setting of Block Valves
4.5 Route Structures
4.6 Marks
5 Structure Design of Pipelines and Pipeline Auxiliaries
5.1 Calculation of the Strength and Stability of Pipelines
5.2 Materials
5.3 Pipe Auxiliaries
6 Gas Transmission Station
6.1 Installation Principles of Gas Transmission Station
6.2 Design of Pressure Adjustment and Measurement
6.3 Pigging Design
6.4 Layout of Compressor and Design Principles of Workshop
6.5 Compressor Station Technology and Auxiliary System
6.6 Lectotype and Allocation of Compressor Unit
6.7 Safety Protection of Compressor Unit
6.8 Instation Pipeline
7 Ground Facilities of Underground Gas Storage
7.1 General Rules
7.2 Ground Technology
7.3 Equipment Selection
7.4 Auxiliary System
8 Monitoring and System Scheduling
8.1 General Rules
8.2 System Scheduling
8.3 Controlled Station
8.4 Monitoring
8.5 Communication
9 Auxiliary Facilities
9.1 Power Supply Distribution
9.2 Water Supply and Drainage, Fire Protection
9.3 Heating, Ventilation and Air Conditioning
10 Welding and Inspection, Pigging, Pressure Test and Drying
10.1 Welding and Inspection
10.2 Pigging and Pressure Test
10.3 Drying
11 Energy Conservation, Environmental Protection, Labor Security and Sanitation
11.1 Energy Conservation
11.2 Environmental Protection
11.3 Labor Security and Sanitation
Appendix A Technical Calculation of Gas Pipeline
Appendix B Axial Stress Calculation and Equivalent Stress Checking of Restrained Buried Straight Pipeline Section
Appendix C Calculation of Elbow Combined Stress under Co-action of Internal Pressure and Temperature Difference
Appendix D: Design parameters of pipe laying conditions
Appendix E: Calculation of the compound stress caused by expanding of pipe accessories
Appendix G Shaft Power Calculation of Compressor
Appendix H: Type of welding joint for pipe ends
Explanation of Wording
1 General Provisions
1.0.1 This code is formulated with a view to follow out relevant national technical and economic policies in design of gas transmission pipeline engineering, unified specification, and realize state-of-art technology, economic feasibility, safety and usability, guaranteed quality.
1.0.2 This code is applicable to design of overland gas transmission pipeline engineering.
1.0.3 Design of gas transmission pipeline engineering shall be in compliance with the following principles:
1 Environment protection, energy conservation and land conservation; manage the interrelation of railway, highway and river all right;
2 Adopt advanced techniques and made efforts to absorb new scientific and technological achievements in both China and abroad;
3 Optimize design proposal, determine the economic feasibility of gas transmission technology and optimal technological parameter.
1.0.4 Design of gas transmission pipeline engineering, not only the requirements stipulated in this code but also those in the current relevant ones of the nation shall be complied with.
Contents of GB 50251-2003
Contents
1 General Provisions
2 Terms
3 Gas Transmission Technology
3.1 General Rules
3.2 Process Design
3.3 Process Calculation and Analysis
3.4 Safety Discharge of Gas Transmission Pipeline
4 Route
4.1 Route Selection
4.2 Division of location class
4.3 Pipelining
4.4 Setting of Block Valves
4.5 Route Structures
4.6 Marks
5 Structure Design of Pipelines and Pipeline Auxiliaries
5.1 Calculation of the Strength and Stability of Pipelines
5.2 Materials
5.3 Pipe Auxiliaries
6 Gas Transmission Station
6.1 Installation Principles of Gas Transmission Station
6.2 Design of Pressure Adjustment and Measurement
6.3 Pigging Design
6.4 Layout of Compressor and Design Principles of Workshop
6.5 Compressor Station Technology and Auxiliary System
6.6 Lectotype and Allocation of Compressor Unit
6.7 Safety Protection of Compressor Unit
6.8 Instation Pipeline
7 Ground Facilities of Underground Gas Storage
7.1 General Rules
7.2 Ground Technology
7.3 Equipment Selection
7.4 Auxiliary System
8 Monitoring and System Scheduling
8.1 General Rules
8.2 System Scheduling
8.3 Controlled Station
8.4 Monitoring
8.5 Communication
9 Auxiliary Facilities
9.1 Power Supply Distribution
9.2 Water Supply and Drainage, Fire Protection
9.3 Heating, Ventilation and Air Conditioning
10 Welding and Inspection, Pigging, Pressure Test and Drying
10.1 Welding and Inspection
10.2 Pigging and Pressure Test
10.3 Drying
11 Energy Conservation, Environmental Protection, Labor Security and Sanitation
11.1 Energy Conservation
11.2 Environmental Protection
11.3 Labor Security and Sanitation
Appendix A Technical Calculation of Gas Pipeline
Appendix B Axial Stress Calculation and Equivalent Stress Checking of Restrained Buried Straight Pipeline Section
Appendix C Calculation of Elbow Combined Stress under Co-action of Internal Pressure and Temperature Difference
Appendix D: Design parameters of pipe laying conditions
Appendix E: Calculation of the compound stress caused by expanding of pipe accessories
Appendix G Shaft Power Calculation of Compressor
Appendix H: Type of welding joint for pipe ends
Explanation of Wording
