NFPA 86D : 1999

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 labeling
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 systems
3.5 Mountings and auxiliary equipment
3.6 Pumping systems
3.7 Vacuum gages and controls
3.8 Vacuum piping systems
3.9 Water-cooling systems
3.10 Gas quenching systems
3.11 Heating elements and insulation
3.12 Heat baffles and reflectors
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
4.8 Power supply
4.9 Heating elements
4.10 Furnace thermal insulation and heat shields
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 device
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 1400 deg f (760 deg C) bypass controller
5.18 Electrical heating systems
5.19 Vacuum furnace systems
5.20 Internal quench vacuum furnaces
Chapter 6 Fume Incinerators
6.1 General
6.2 Catalytic fume incinerators
Chapter 7 Integral liquid quench vacuum furnaces
7.1 General
7.2 Requirements
7.3 Construction of quenching tanks
7.4 Elevators
7.5 Cooling systems
7.6 Electric immersion heaters
Chapter 8 Vacuum furnaces used with special flammable
            atmospheres
8.1 General
8.2 Safety controls and equipment
8.3 Flammable gases
8.4 Removal of flammable gas
8.5 Emergency shutdown procedure
Chapter 9 Bulk Atmosphere Gas Storage Systems
9.1 Construction
9.2 Location
9.3 Storage systems
Chapter 10 Vacuum Induction Furnaces
10.1 General
10.2 Location
10.3 Construction
10.4 Heating systems
10.5 Safety controls
Chapter 11 Inspection, Testing and Maintenance
11.1 Responsibility of the manufacturer and the user
11.2 Check list
Chapter 12 Fire Protection
12.1 General
12.2 Sprinkler and spray systems
12.3 Portable protection equipment
Chapter 13 Referenced Publications
Appendix A Explanatory Material
Appendix B Pump Data
Appendix C Engineering Data
Appendix D Vacuum Symbols
Appendix E Design Standard references
Appendix F Lower Limits of Flammability in Air
Appendix G Referenced Publications
Index

Applies to "Class D" industrial furnaces that operate at above ambient temperatures to over 5000 deg F (2760 deg C) and at pressures normally below atmosphere to 10-8 Torr. Covers the design, construction, and protection of such furnaces.