NFPA 268:2022

Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Application. 1.4 Units and Formulas. 1.5 Precision or Bias. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. (Reserved) 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. (Reserved) Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 Summary of Method 4.1 Test Panel Orientation. 4.2 Test Setup. Chapter 5 Radiant Panel Apparatus and Specimen Mounting System 5.1 Radiant Panel. 5.2 Test Specimen. 5.3 Radiation Shield. 5.4 Spark Igniter. 5.5 Ambient Conditions. Chapter 6 Instrumentation and Documentation 6.1 Heat Flux Meter. 6.2 Thermocouples. 6.3 Photographic Documentation. Chapter 7 Test Specimen and Mounting 7.1 Specimen Detail. 7.2 Mounting. Chapter 8 Calibration of the Test Equipment 8.1 Calibration. 8.2 Spacing. 8.3 Validation. Chapter 9 Test Specimen Conditioning 9.1 Conditioning. Chapter 10 Safety Precautions 10.1 Gas Hazard. 10.2 High Temperature and Pressure. 10.3 Products of Combustion. Chapter 11 Test Procedure 11.1 Conditioning. 11.2 Specimen and Test Equipment. 11.3 Radiant Panel Preheat. 11.4 Specimen Exposure. 11.5 Heat Flux Variation During a Test. 11.6 Testing at Different Incident Heat Fluxes for Larger Fire Separation Distances. Chapter 12 Report 12.1 Information. Chapter 13 Calibration 13.1 Heat Flux Meters. Annex A Explanatory Material Annex B Commentary on Radiant Ignition Test Annex C Informational References

This ƒre test response standard describes a method for determining the propensity of ignition of exterior wall assem‐ blies from exposure to 12.5 kW/m2 (1.10 Btu/ft2 -sec) radiant heat in the presence of a pilot ignition source.