NFPA 86:2023

Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Application. 1.4 Retroactivity. 1.5 Equivalency. 1.6 Units and Formulas. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 General 4.1 Approvals, Plans, and Specifications. 4.2 Safety Labeling. 4.3 Pressure Vessels. 4.4 Noncombustible Material. [101:4.6.13] Chapter 5 Location and Construction 5.1 Location. 5.2 Furnace Design. 5.3 Explosion Relief. 5.4 Ventilation and Exhaust System. 5.5 Mountings and Auxiliary Equipment. Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Application. 1.4 Retroactivity. 1.5 Equivalency. 1.6 Units and Formulas. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 General 4.1 Approvals, Plans, and Specifications. 4.2 Safety Labeling. 4.3 Pressure Vessels. 4.4 Noncombustible Material. [101:4.6.13] Chapter 5 Location and Construction 5.1 Location. 5.2 Furnace Design. 5.3 Explosion Relief. 5.4 Ventilation and Exhaust System. 5.5 Mountings and Auxiliary Equipment. Chapter 6 Furnace Heating Systems 6.1 General. 6.2 Fuel Gas–Fired Units. 6.3 Oil-Fired Units. 6.4 Oxygen-Enhanced Fuel-Fired Units. 6.5 Flue Product Venting. 6.6 Electrically Heated Units. 6.7 Fluid Heating Systems. Chapter 7 Commissioning, Operations, Maintenance, Inspection, and Testing 7.1 Commissioning. 7.2 Training. 7.3 Operations. 7.4 Inspection, Testing, and Maintenance. 7.5 Record Retention. 7.6 Procedures. Chapter 8 Safety Equipment and Application 8.1 General. 8.2 Safety Device Requirements and Burner Management Systems. 8.3 Programmable Logic Controller Systems. 8.4 Safety Control Application for Fuel-Fired Heating Systems. 8.5 Safety Devices. 8.6 Combustion Air Safety Devices. 8.7 Safety Shutoff Valves (Fuel Gas or Oil). 8.8 Fuel Pressure Switches (Gas or Oil). 8.9 Flame Supervision. 8.10 Fuel Oil Atomization (Other Than Mechanical Atomization). 8.11 Fuel Oil Temperature Limit Devices. 8.12 Multiple-Fuel Systems. 8.13 Air–Fuel Gas Mixing Machines.8.14 Oxygen Safety Devices. 8.15 Excess Temperature Limit Interlock. 8.16 1400°F (760°C) Bypass Interlock. 8.17 Electrical Heating Systems. 8.18 Fluid-Heated Systems — Excess Temperature Limit Interlock. Chapter 9 Fire Protection 9.1 General. 9.2 Types of Fire Protection Systems. 9.3 Special Considerations. 9.4 Drawings and Calculations. 9.5 Means of Access. 9.6 Inspection, Testing, and Maintenance of Fire Protection Equipment. Chapter 10 Thermal Oxidizer 10.1 General. 10.2 Location and Construction. 10.3 Heating Systems. 10.4 Commissioning, Operations, Maintenance, Inspection, and Testing. 10.5 Fire Protection. 10.6 Safety Equipment and Application. Chapter 11 Class A Ovens and Furnaces 11.1 General. (Reserved) 11.2 Location and Construction. (Reserved) 11.3 Heating Systems. (Reserved) 11.4 Commissioning, Operations, Maintenance, Inspection, and Testing. 11.5 Fire Protection. 11.6 Safety Ventilation for Class A Ovens. 11.7 Low-Oxygen Atmosphere Class A Ovens with Solvent Recovery. Chapter 12 Class B Ovens and Furnaces 12.1 General. (Reserved) 12.2 Location and Construction. (Reserved) 12.3 Heating Systems. (Reserved) 12.4 Commissioning, Operations, Maintenance, Inspection, and Testing. (Reserved) 12.5 Safety Equipment. 12.6 Fire Protection. (Reserved) Chapter 13 Special Atmospheres for Class C Ovens and Furnaces 13.1 General. 13.2 Location and Construction. 13.3 Heating Systems. 13.4 Commissioning, Operations, Maintenance, Inspection, and Testing. 13.5 Safety Equipment. 13.6 Fire Protection.Chapter 14 Class D Furnaces 14.1 General. 14.2 Location and Construction. 14.3 Heating Systems. 14.4 Commissioning, Operations, Maintenance, Inspection, and Testing. 14.5 Safety Equipment. Annex A Explanatory Material Annex B Example of Class A Furnace Operational and Maintenance Checklist Annex C Example of Class A or Class B Furnace Operational and Maintenance Checklist Annex D The Lower Limit of Flammability and the Autogenous Ignition Temperature of Certain Common Solvent Vapors Encountered in Ovens Annex E Continuous Solvent Vapor Concentration Indicator and Controller Annex F Fire Protection Study Annex G Steam Extinguishing Systems Annex H Example of Class C Furnace Operational and Maintenance Checklist Annex I Vacuum Furnace Maintenance Checklist Annex J Pump Data Annex K Engineering Data Annex L Vacuum Symbols Annex M Design Standard References Annex N Process Hazard Analysis Annex O Informational References

This standard shall apply to Class A, Class B, Class C, and Class D ovens, dryers, and furnaces; oxidizers systems; and any other heated systems and related equipment used for processing of materials.