NFPA 86: Standard for Ovens and Furnaces

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Protect people and property using the latest safeguards in the 2015 NFPA 86: Standard for Ovens and Furnaces.

Minimize the fire and explosion hazards that can endanger the furnace, the building, or personnel. The 2015 edition of NFPA 86: Standard for Ovens and Furnaces provides the latest comprehensive requirements for the safe design; installation; operation; and inspection, testing, and maintenance of Class A, B, C, and D ovens, dryers, and furnaces; thermal oxidizers; and any other heated enclosure used for processing of materials and related equipment.

Protect industrial facilities and employees with requirements for:

  • General approvals, plans, specifications, and safety labeling
  • Location and construction
  • Furnace heating systems
  • Commissioning, operations, maintenance, inspection, and testing
  • Safety equipment and application

Major changes bring the 2015 NFPA 86 up-to-date with industry needs:

  • Added definitions for burner management system (BMS), combustion safeguard, flame detector, flame failure response time, hardwired, and pressure regulators
  • Added procedures for placing equipment into service based on purging practices in the 2015 NFPA 54: National Fuel Gas Code and the 2014 NFPA 56: Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems
  • New requirements prohibiting the manifolding of vent lines from different pressure levels
  • Modified requirements for Class A and Class C ovens and furnaces -- including the development of new requirements on fire protection and safety ventilation for Class A ovens.

NFPA 86 gives industrial facility owners and operators, designers, and installers confidence in fire safety and fire protection for ovens, furnaces, dryers, thermal oxidizers, or other heated enclosure for processing of materials. (Softbound, 141 pp., 2015)

NFPA<sup>®</sup> 86 Standard for Ovens and Furnaces 2015 Edition

NFPA® 86 Standard for Ovens and Furnaces 2015 Edition

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
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
8.3 Burner Management System Logic
8.4 Programmable Logic Controller Systems
8.5 Safety Control Application for Fuel-Fired Heating Systems
8.6 Ventilation Safety Devices
8.7 Combustion Air Safety Devices
8.8 Safety Shutoff Valves (Fuel Gas or Oil)
8.9 Fuel Pressure Switches (Gas or Oil)
8.10 Flame Supervision
8.11 Fuel Oil Atomization (Other Than Mechanical Atomization)
8.12 Fuel Oil Temperature Limit Devices
8.13 Multiple-Fuel Systems
8.14 Air–Fuel Gas Mixing Machines
8.15 Oxygen Safety Devices
8.16 Excess Temperature Limit Interlock
8.17 1400°F (760°C) Bypass Interlock
8.18 Electrical Heating Systems
8.19 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. (Reserved)
10.4 Commissioning, Operations, Maintenance, Inspection, and Testing. (Reserved)
10.5 Fire Protection. (Reserved)
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. (Reserved)
13.2 Location and Construction. (Reserved)
13.3 Heating Systems. (Reserved)
13.4 Commissioning, Operations, Maintenance, Inspection, and Testing. (Reserved)
13.5 Safety Equipment
13.6 Fire Protection. (Reserved)
Chapter 14 Class D Furnaces
14.1 General. (Reserved)
14.2 Location and Construction
14.3 Heating Systems. (Reserved)
14.4 Commissioning, Operations, Maintenance, Inspection, and Testing. (Reserved)
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 Steam Extinguishing Systems
Annex G Example of Class C Furnace Operational and Maintenance Checklist
Annex H Vacuum Furnace Maintenance Checklist
Annex I Pump Data
Annex J Engineering Data
Annex K Vacuum Symbols
Annex L Design Standard References
Annex M Informational References