Gas Piping

The demand for efficient and safe gas transportation systems is rapidly growing in the industrial, commercial, and domestic sectors. Gas piping design plays a critical role in the distribution of natural gas, LPG, and other industrial gases, ensuring operational safety, regulatory compliance, and performance reliability.

This course is meticulously designed to provide mechanical engineers and piping professionals with in-depth knowledge of gas piping systems. It covers the fundamentals of gas behavior, international design codes, material selection, layout development, and safety standards. Emphasis is placed on practical applications through P&ID interpretation, isometric drawing, and real-world project case studies.

 Module 1: Introduction to Gas Piping Systems

• Basics of Natural Gas & LPG

• Classification of Gases: Inert, Flammable, Toxic

• Properties of Industrial Gases

• Applications: Domestic, Commercial, and Industrial

 Module 2: Codes and Standards

• ASME B31.3 – Process Piping

• ASME B31.8 – Gas Transmission and Distribution

• API Standards

• NFPA 54 & 58

• Local Gas Board Regulations (IGEM, OISD, etc.)

 Module 3: Piping Components and Materials

• Pipes: ERW, Seamless, Stainless Steel, Copper

• Valves: Ball, Gate, Globe, Safety Valves

• Regulators, Meters, Filters

• Fittings: Elbows, Tees, Reducers, Flanges

• Material Selection Based on Pressure, Temperature & Gas Type

 Module 4: Piping Layout and Routing

• Concept of Utility Mapping

• Aboveground vs Underground Gas Lines

• Pipe Support and Anchoring

• Expansion Loops and Bends

• Isolation and Venting Philosophy

 Module 5: Design Calculations

• Flow Rate Calculation (SCMH/SCFH)

• Pressure Drop Calculation

• Sizing of Pipe using Darcy-Weisbach / AGA formulas

• Velocity Considerations and Line Sizing

• Design Pressure & Temperature

 Module 6: P&ID and Isometric Drawing Practice

• Basics of Process Flow Diagrams (PFD)

• Introduction to P&ID Symbols for Gas Systems

• Isometric Drafting using AutoCAD or E3D

• Gas Skid Layouts and Assembly Drawings

 Module 7: Safety and Hazard Management

• Hazardous Area Classification (Zone 0, 1, 2)

• Fire and Explosion Risks

• Leak Testing Procedures (Hydrotest, Pneumatic Test)

• Gas Detection and Emergency Shutdown Systems (ESD)

• Purging, Venting & Inerting

 Module 8: Installation & Commissioning

• Welding and Fabrication Practices

• Pre-commissioning Checks

• Pressure Testing Procedures

• Commissioning and Startup

 Module 9: Case Studies and Practical Applications

• Gas Distribution for Industrial Parks

• City Gas Distribution Network (CGD)

• Skid Mounted Gas Systems

• On-site Design Simulation Using Real Projects

 Module 10: Software Tools (Optional)

• AutoCAD / AutoCAD Plant 3D

• Caesar II (Stress Analysis Basics)

• Pipe Flow Expert / FluidFlow

Conclusion

Gas piping design is more than just connecting pipes—it’s about designing safe, efficient, and sustainable systems that meet global engineering and safety standards. Through this course, participants gain not only theoretical knowledge but also hands-on experience with drawings, calculations, and software tools used in modern piping design.

By the end of the program, learners will be equipped to independently read and prepare P&IDs, size gas lines, select appropriate piping components, and ensure safety and compliance across various project types. This training lays a strong foundation for a successful career in the piping industry, particularly in gas transmission, distribution, and processing sectors.

Gas Piping