NFPA 86C : 1999

Foreword
Chapter 1 - General
1.1 Scope
1.2 Purpose
1.3 Application
1.4 Approvals, Plans, and Specifications
1.5 Operator and Maintenance Personnel Training
1.6 Equipment Maintenance
1.7 Safety Labelling
Chapter 2 - Definitions
2.1 Definitions
Chapter 3 - Location and Construction
3.1 Location
3.2 Furnace Design
3.3 Explosion Relief
3.4 Ventilation and Exhaust System
3.5 Mountings and Auxiliary Equipment
Chapter 4 - Furnace Heating Systems
4.1 General
4.2 Fuel Gas-Fired Units
4.3 Oil-Fired Units
4.4 Oxygen-Enhanced Fuel-Fired Units
4.5 Flue Product Venting
4.6 Electrically Heated Units
4.7 Fluid Heating Systems
Chapter 5 - Safety Equipment and Application
5.1 Scope
5.2 General
5.3 Programmable Controllers
5.4 Safety Control Application for Fuel-Fired Heating
       Systems
5.5 Ventilation Safety Devices
5.6 Combustion Air Safety Devices
5.7 Safety Shutoff Valves (Fuel Gas or Oil)
5.8 Fuel Pressure Switches (Gas or Oil)
5.9 Combustion Safeguards (Flame Supervision)
5.10 Fuel Oil Atomization (Other than Mechanical
       Atomization)
5.11 Fuel Oil Temperature Limit Devices
5.12 Multiple Fuel Systems
5.13 Air-Fuel Gas Mixing Machines
5.14 Oxygen Safety Devices
5.15 Ignition of Main Burners-Fuel Gas or Oil
5.16 Excess Temperature Limit Controller
5.17 1400degreeF (760degreeC) Bypass Controller
5.18 Electrical Heating Systems
Chapter 6 - Fume Incinerators
6.1 General
6.2 Catalytic Fume Incinerators
Chapter 7 - Special Atmospheres
7.1 General
7.2 Exothermic Generators
7.3 Endothermic Generators
7.4 Ammonia Dissociators
7.5 Bulk Storage and Generated Supply Systems for Special
       Atmospheres
7.6 Special Processing Gas Atmosphere Gas Mixing System
7.7 Flow Control of Special Atmospheres
7.8 Piping Systems for Special Atmospheres
7.9 Maintenance
Chapter 8 - Special Atmospheres and Furnaces as Classified in
            Chapters 9 through 12
8.1 General
8.2 Indeterminate Atmospheres
8.3 Automatic Cycling
8.4 Furnace Type
Chapter 9 - Type I and Type II Furnaces
9.1 General
9.2 Atmosphere Introduction and Removal
9.3 Emergency Procedures for Type I and Type II Furnaces
9.4 Protective Equipment for Type I and Type II Furnaces
Chapter 10 - Furnaces Types III, IV, and V
10.1 General
10.2 Atmosphere Introduction and Removal
10.3 Emergency Procedures for Types III, IV, and V Furnaces
10.4 Protective Equipment for Types III, IV, and V Furnaces
Chapter 11 - Type VI and Type VII Furnaces
11.1 General
11.2 Atmosphere Introduction and Removal
11.3 Emergency Procedures for Type VI and Type VII Furnaces
11.4 Protective Equipment for Type VI and Type VII Furnaces
Chapter 12 - Class C - Heating Cover Furnaces
12.1 General
12.2 Flammable Special Atmosphere Introduction and Removal
12.3 Emergency Shutdown for Heating Cover-Type Furnaces
12.4 Protective Equipment for Heating Cover-Type Furnaces
       above 1400degreeF (760degreeC)
12.5 Operating Precautions for Heating Cover-Type Furnaces
Chapter 13 - Timed Flow Purge Method for Type I-IX Furnaces
13.1 General
13.2 Timed Flow Purging Trials
13.3 Future Purge Verifications
13.4 Failure To Verify Timed Flow Purge Effectiveness
Chapter 14 - Integral Quench Furnaces
14.1 Scope
14.2 Types of Integral Quench Furnaces
14.3 Quench Vestibule
14.4 Cooling Chamber Design
14.5 Elevator Design
14.6 Lower Quench Chamber or Tank
14.7 Overflow Drains
14.8 Quench Medium Cooling Systems
14.9 Quench Tank Protective Features
14.10 Quench Tank Heating Controls
Chapter 15 - Open Liquid Quench Tanks
15.1 Scope
15.2 Location
15.4 Quench Tank Construction
15.5 Equipment
15.6 Protection
Chapter 16 - Molten Salt Bath Equipment
16.1 General
16.2 Location and Construction
16.3 Salts
16.4 Heating Systems
16.5 Ventilation
16.6 Safety Control Equipment
16.7 Integral Quenching Salt Banks
16.9 Operator Precautions
16.10 Precautions
Chapter 17 - Inspection, Testing, and Maintenance
17.1 Responsibility of the Manufacturer and the User
17.2 Equipment Entry
17.3 Checklist
Chapter 18 - Fire Protection
18.1 Sprinklers, Water Spray, and Special Extinguishing
       Systems
18.2 Portable Protection Equipment
Chapter 19 - Referenced Publications
Appendix A - Explanatory Material
Appendix B - Example of Operational and Maintenance Checklist
Appendix C - Indeterminate Special Gas Atmospheres
Appendix D - Referenced Publications
Index

Covers "Class C" industrial furnaces which utilize a special processing atmosphere, including salt bath and integral quench furnaces. Excludes coal or other fuel firing systems and listed equipments with heating systems that supplies a total input not exceeding 150,000 Btu/hr (44 kW).