NFPA 253 PDF

Help keep buildings and occupants safer by following the latest test methods for determining the exposure behavior of floor covering systems.

NFPA^® 253, Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source, provides a reliable basis for estimating the fire exposure behavior of floor covering systems installed in a building corridor or exit way. The standard is referenced by NFPA 101^®, Life Safety Code^®, and other prominent codes and standards. Annex information covers everything from how to calibrate an apparatus and mounting methods to proper application and interpretation of results and safety precautions.

Notable changes to the 2023 edition of NFPA 253 include:

• Clarification of terminology for improved usability and accuracy
• Relocation of radiation instrumentation calibration information from nonmandatory Annex B to a mandatory section in Chapter 6