NFPA 271: Standard Method of Test for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter
Current Edition: 2009 Next Edition: Withdrawn

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NFPA 271:
2009 Edition
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This document was withdrawn in Fall 2011. Material found in ASTM E 1354.
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What is NFPA 271?
NFPA 271: Document Scope
1.1 Scope. 1.1.1* This test method measures the response of materials exposed to controlled levels of radiant heating, with or without an external igniter. A.1.1.1 Conducting tests without piloted ignition is best kept for research and development. This method is similar to the test method contained in ASTM E 1354, Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter (Cone Calorimeter), and in ISO 5660, Reaction-to- Fire Tests—Heat Release, Smoke Production and Mass Loss Rate— Part 1: Heat Release Rate (Cone Calorimeter Method). 1.1.2 This test method determines the ignitibility, heat release rate, mass loss rates, effective heat of combustion, and visible smoke development of materials and products. 1.1.3* This test method tests the specimen in the horizontal orientation. A.1.1.3 Testing of materials in the horizontal orientation is preferred, especially for regulatory purposes, because such testing is much more reproducible and repeatable than testing performed in the vertical orientation and generally appears to provide a more severe exposure condition. When vertical orientation is used, it is more difficult to control the pyrolysates that evolve from the material’s surface for the purpose of external ignition using the point source spark igniter. Convective heat flow along the exposed surface of the sample is also a complicating factor.
Official document scope
What does NFPA 271 address?
Table Of Contents.
NFPA 271, 2009 Edition: Archived Revision Information
Report on Proposals (ROP)
Report on Proposals (ROP)
Proposals can be submitted for text to be amended or included in NFPA Codes and Standards. Following the Call for Proposals period, the responsible Technical Committee or Panel holds a meeting to consider and act on all submitted proposals. The committee or panel may also develop its own proposals. A document known as the Report on Proposals (ROP) is prepared containing all the Public Proposals, Technical Committees' action on each Proposal, as well as all Committee-generated proposals. The ROP for the document in question is submitted for the approval of the responsible TC or Panel by a formal written ballot. If the ROP does not receive approval via written ballot in accordance with NFPA rules, the Report is returned to the committee for further consideration and is not published. If the necessary approval is received, the ROP is published in a compilation of Reports on Proposals issued by NFPA twice yearly for public review and comment, and the process continues to the next step. The ROP is published and widely distributed and anyone may download or request a copy.
Report on Comments (ROC)
Report on Comments (ROC)
Once the ROP becomes available, there is a 60-day comment period during which time anyone may submit a public comment on the proposed changes documented in the ROP. The committee or panel reconvenes at the end of the comment period and acts on all public comments. This committee or panel may also develop its own comments. As before, approval obtained via written ballot in accordance with NFPA's Regulations is required on all committee and panel actions. All of this information is compiled into a second Report, called the Report on Comments (ROC), which like the ROP, is published and made available for public review for a seven-week period.
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Archived revision information
NFPA 271, 2009 Edition: Archived Revision Information
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