NFPA 268: Standard Test Method for Determining Ignitability of Exterior Wall Assemblies Using a Radi

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Item #: NFPA_268
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2012 NFPA 268
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Accurately assess fire risk by testing exterior wall assemblies according to the methodology presented in the 2012 NFPA 268.

Revised to include updated references, the 2012 NFPA 268: Standard Test Method for Determining Ignitability of Exterior Wall Assemblies Using a Radiant Heat Energy Source describes a method to determine the propensity of ignition of exterior wall assemblies from exposure to 12.5 kW /m2 radiant heat in the presence of a pilot ignition source.

From instrumentation and documentation to safety precautions and calibration, this document provides testing laboratories and manufacturers with comprehensive testing guidance. (Softbound, Approx. 17 pp., 2012)

NFPA® 268 Standard Test Method for Determining Ignitability of Exterior Wall Assemblies Using a Radiant Heat Energy Source 2012 Edition

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
2.3 Other Publications
2.4 Extracts for References in Mandatory Sections (Reserved)
Chapter 3 Definitions
3.1 General
3.2 NFPA Official Definitions
3.3 General Definitions
3.4 Testing Terminology.
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
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
Index