NFPA 67:2019

Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Piping Installation and Maintenance. 1.4 Applications. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. 2.3 Other Publications. 2.4 References for Extracts in Advisory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 Fundamentals of Deflagrations 4.1 General. 4.2 Flammable Limits. 4.3 Burning Velocity. 4.4 Flame Speed. 4.5 Mixtures. Chapter 5 Principles of Detonations 5.1 Properties. 5.2 Detonation Cells and Mixture Composition Limits. 5.3 Chapman-Jouguet (CJ) Detonations. 5.4 Detonation Development from Deflagration. 5.5 Direct Initiation of a Detonation. 5.6 Statement on Mixtures. (Reserved) Chapter 6 Detonation Prevention 6.1 Detonation Prevention by Composition Control. 6.2 Deflagration Intervention. Chapter 7 Detonation Containment 7.1 General. 7.2 Detonation Forces on Pipes. 7.3 CJ Pressure. 7.4 Reflected Pressure Waves. 7.5 Detonation Containment in Pipes. 7.6 Detonations in Large Structures. (Reserved) 7.7 Pipe Structural Response to Detonation Loads. Chapter 8 Detonation Propagation Across Boundaries 8.1 General — Detonation Propagation Across Boundaries. (Reserved) 8.2 Flame Quenching. 8.3 Minimum Opening Diameter for Detonation Propagation. Chapter 9 Mitigation of Detonation Effects 9.1 Passive Detonation Arresters. 9.2 Active Detonation Arrester Systems. 9.3 Detonation Arrester Systems. 9.4 Water Sprays. Chapter 10 Applications of Passive Detonation Protection Strategies 10.1 Underground Storage Vessel. 10.2 Aboveground Storage Vessel. 10.3 Protection of Process Unit and Tank Farm from Thermal Oxidizer. 10.4 Protection Strategy for a Carbon Adsorption Unit. 10.5 Protection Strategy for Equipment (Blowers, Vacuum Pumps, etc.). 10.6 Selecting Flame Arresters for Actual Process Conditions. Chapter 11 Management of Change 11.1 Procedures for Management of Change. Chapter 12 Installation, Inspection, and Maintenance of Piping Explosion Protection Systems 12.1 General. 12.2 Design Parameters and Documentation. 12.3 Installation. 12.4 Inspection. 12.5 Availability of Explosion Protection System Documentation. 12.6 Maintenance. 12.7 Cleaning. 12.8 Procedures After an Explosion Protection System Event. 12.9 Recordkeeping. 12.10 Personnel Safety and Training. Annex A Explanatory Material Annex B Examples of Calculations of Suitable Pipe Wall Thickness for Pipe Wall Elastic Response to Stable Detonations Annex C Informational References

This guide applies tothedesign,installation, and operationof piping systems containing flammable gases where thereis a potential for ignition.