NFPA 274 PDF

Highlights

The 2023 edition provides the most current methods of determining the heat release and smoke generation of pipe insulation and pipe insulation assemblies under controlled laboratory conditions.
Notable changes include:
Updates to the latest referenced codes and standards
Revisions to the annex to support the 2023 edition of NFPA 274

2023 Table of Contents

NFPA® 274 Standard Test Method to Evaluate Fire Performance Characteristics of Pipe Insulation 2023 Edition
Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
1.3 Application.
1.4 Units and Formulas.
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. (Reserved)
Chapter 4 Test Specimens
4.1 Size and Preparation.
4.2 Conditioning.
Chapter 5 Test Equipment and Instrumentation
5.1 Pipe Chase.
5.2 Ignition Source.
5.3 Canopy Hood and Exhaust Duct.
5.4 Instrumentation in Exhaust Duct.
5.5 Sampling Line.
5.6 Gas Sampling and Analysis Equipment.
5.7 Smoke Density Measuring Instruments.
5.8 Data Acquisition.
5.9 Photographic Equipment.
Chapter 6 Calibration
6.1 Calibration of Equipment.
6.2 Daily Calibration.
Chapter 7 Test Procedure
7.1 Testing Procedure.
Chapter 8 Calculations
8.1 Method of Calculation.
8.2 Symbols.
8.3 Calibration Constant Using Propane.
8.4 Heat Release for Test Specimens.
8.5 Smoke Obscuration.
Chapter 9 Report of Results
9.1 Documentation.
Annex A Explanatory Material
Annex B Commentary
Annex C Heat Release Calculations Using Additional Gas Analysis
Annex D Informational References