Pipeline stress (static/dynamic) analysis, CAESARII engineering examples, selection of pressure pipeline materials, and pipeline design examples
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Pipeline Materials Section (I) Selection of Codes Relevant to Pressure Pipeline Design； Similarities and differences between China’s standards for pressure pipelines (GB/T 20801) and the ISO 15649, ASME B31.1, B31.3 specifications (Part 2): Selection of pipeline materials and case studies 1. Areas of controversy regarding material selection in pipeline standards 2. Pressure pipeline grades and their engineering applications 3. Material grades and allowable stresses 4. Limitations on the use of pipeline materials at high temperatures 5. Limitations on the use of pipeline materials at low temperatures 6. Design and selection of pipeline accessories such as flanges, bolts, nuts, gaskets, and valves 7. Material selection calculations for special pipelines 8. Material design and selection based on risk assessment. Pipeline stress aspects 1. Differences among various standards and specifications related to pipeline stress (B31.1, B31.3, national standards, etc.) 2. New functions in the CAESARII software 3. Techniques for modeling typical pipelines, definition of material databases, and reporting static analysis results 4. Principles for the flexible design of pipelines and material selection 5. Principles for the design and selection of pipeline supports and hangers 6. Use of the CAESARII scenario editor; application of scenarios such as earthquakes, wind, air traffic, hydrostatic testing, uniform loads, and concentrated loads in this editor 7. Design and analysis of pipelines in tank areas; effects of tank deformation and foundation settlement on pipelines; methods for analyzing local stresses at tank openings 8. Analysis of pipe openings in stationary equipment and local stress analysis. 9. Vertical and horizontal containers, towers, tanks, heat exchangers, etc. 9. Stress criteria and requirements for moving equipment (pumps, compressors, turbines, etc.) and nozzles of heating furnaces. 10. Stress analysis of long-distance oil and gas pipelines (buried, overhead, or undercrossing); establishment of buried pipeline models, common problems and solutions. 11. Practical engineering examples (I): 1. Basic theories of vibration analysis. 2. Analysis methods in CAESARII for dealing with dynamic problems. 3. Various dynamic analysis modules built into CAESARII and their applications. 4. Dynamic analysis of pipelines ； Explanation of software calculation processes (modal analysis, vibration analysis, dynamic calculation of safety valve discharge, dynamic seismic analysis, water hammer/air hammer calculations), and description of various dynamic control parameters. 5. Design of pump stations and centrifugal compressor pipelines as well as pipeline stress analysis; control and verification of loads at the connections of rotating equipment. 6. Practical exercises: (II) 1. Pipeline modal analysis and vibration analysis, calculation and adjustment of pipeline natural frequencies, and methods to prevent pipeline vibration. 2. Design of safety valve discharge systems, design of open and closed discharge systems, and analysis of pipeline stresses in these discharge systems. 3. Analysis and control of airflow fluctuations in reciprocating compressors, design methods and control measures. 4. Requirements for pipeline layout design in reciprocating compressors, with typical examples of various types of compressors such as those with multiple stages or arranged in parallel. 5. Analysis of pipeline flange leaks, simulation calculations for jacketed pipes, and case studies. 6. Simulation calculations for expansion joints used in pipelines, along with case studies. 7. Practical exercises* ； Q&A Session (III) Examples of Pressure Pipeline Design and Calculation 1. Design conditions and design criteria 2. Pressure design of pipeline components 3. Pipeline stress analysis and pipe supports 4. Flexibility coefficient and stress amplification factor 5. Calculation of wind loads and seismic loads 6. Dynamic load analysis when valves in the pipeline are opened and closed (IV) Pipeline Safety Protection 1. Selection and calculation of safety relief devices 2. Determination of safety relief volume and minimum relief area ； Design of inlet and outlet valves and pipelines for safety relief devices 3. Selection of safety relief devices 4. Application and installation of flame arrestors 5. Safety measures in plant layout 6. MESG and explosion ratings for flammable gases and vapors. Leave your contact information: 137 1653 9921
For the material design and stress analysis of pressure pipelines, it is first necessary to understand the relevant domestic and international standards. When selecting standards for pressure pipelines, there are some differences between standards such as GB/T 20801 and international standards like ISO 15649, ASME B31.1, and B31.3; these differences mainly lie in aspects such as safety factors, material selection, and testing methods. Common issues in material design selection include the limitations of materials when used in high and low temperature environments, as well as the choice of material grades and their allowable stresses at different pressure levels. In addition, pipeline accessories such as flanges, bolts, nuts, gaskets, and valves also require appropriate materials and models to be selected based on the operating conditions, in order to ensure the safety and reliability of the entire system. In pipeline stress analysis, it is common practice to use the CAESAR II software for static and dynamic analyses. This includes how to establish pipeline models, define material databases, carry out flexible design, and select appropriate supports and hangers. In addition, it is also necessary to understand how to handle special operating conditions, such as earthquakes, wind loads, air management, hydrostatic testing, and stress analysis of long-distance pipelines in buried or traversed conditions. In terms of practical application, the use of the aforementioned theoretical knowledge can be practiced through specific engineering examples, such as actual pipeline design calculations, stress analysis, and vibration control, as well as the design of safety measures, including the selection of safety relief devices and safety considerations in their layout. Such training helps to integrate theory with practical application, ensuring the safe and efficient operation of pipeline systems. .
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