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ASTM E2653-21

(Practice)

Standard Practice for Conducting an Interlaboratory Study to Determine Precision Estimates for a Fire Test Method with Fewer Than Six Participating Laboratories

Standard Practice for Conducting an Interlaboratory Study to Determine Precision Estimates for a Fire Test Method with Fewer Than Six Participating Laboratories

SIGNIFICANCE AND USE
5.1 ASTM regulations require precision statements in all test methods in terms of repeatability and reproducibility. This practice is used when the number of participating laboratories or materials being tested, or both, in a precision study is less than the number specified by Practice E691. When possible, it is strongly recommended that a full E691 standard protocol be followed to determine test method precision. Precision results produced by the procedures presented in this standard will not have the same degree of accuracy as results generated by a full E691 protocol. This procedure will allow for the development of useful precision results when a full complement of laboratories is not available for interlaboratory testing.  
5.2 This practice is based on recommendations for interlaboratory studies and data analysis presented in Practice E691. This practice does not concern itself with the development of test methods but with a standard means for gathering information and treating the data needed for developing a precision statement for a fire test method when a complete E691 interlaboratory study and data analysis are not possible.
SCOPE
1.1 This practice describes the techniques for planning, conducting, analyzing, and treating results of an interlaboratory study (ILS) for estimating the precision of a fire test method when fewer than six laboratories are available to meet the recommended minimum requirements of Practice E691. Data obtained from an interlaboratory study are useful in identifying variables that require modifications for improving test method performance and precision.  
1.2 Precision estimates developed using this practice will not be statistically equivalent to precision estimates produced by Practice E691 because a small number of laboratories are used. The smaller number of participating laboratories will seriously reduce the value of precision estimates reported by this practice. However, under circumstances where only a limited number of laboratories are available to participate in an ILS, precision estimates developed by this practice will provide the user with useful information concerning precision for a test method.  
1.3 A minimum of three qualified laboratories is required for conducting an ILS using this practice. If six or more laboratories are available to participate in an ILS for a given fire test method, Practice E691 shall be used for conducting the ILS.  
1.4 Since the primary purpose of this practice is the development of the information needed for a precision statement, the experimental design in this practice will not be optimum for evaluating all materials, test methods, or as a tool for individual laboratory analysis.  
1.5 Because of the reduced number of participating laboratories a Laboratory Monitor shall be used in the ILS. See Standard Guide E2335.  
1.6 Field of Application—This practice is concerned with test methods that yield numerical values or a series of numerical values for different fire-test response properties. The numerical values mentioned above are typically the result of calculations from a set of measurements.  
1.7 This practice includes design information suitable for use with the development of interlaboratory studies for test methods that have categorization (go-no-go) allocation test results. However, it does not provide a recommended statistical practice for evaluating the go-no-go data.  
1.8 This fire standard cannot be used to provide quantitative measures.  
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision ...

General Information

Status
Historical
Publication Date
30-Nov-2021
ICS
13.220.01 - Protection against fire in general
Technical Committee
E05 - Fire Standards
Drafting Committee
E05.31 - Terminology and Services / Functions
Current Stage
Ref Project

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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E2653 − 21 An American National Standard
Standard Practice for
Conducting an Interlaboratory Study to Determine Precision
Estimates for a Fire Test Method with Fewer Than Six
1
Participating Laboratories
This standard is issued under the fixed designation E2653; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.6 Field of Application—This practice is concerned with
test methods that yield numerical values or a series of
1.1 This practice describes the techniques for planning,
numerical values for different fire-test response properties. The
conducting, analyzing, and treating results of an interlaboratory
numerical values mentioned above are typically the result of
study (ILS) for estimating the precision of a fire test method
calculations from a set of measurements.
when fewer than six laboratories are available to meet the
1.7 This practice includes design information suitable for
recommended minimum requirements of Practice E691. Data
use with the development of interlaboratory studies for test
obtained from an interlaboratory study are useful in identifying
methods that have categorization (go-no-go) allocation test
variables that require modifications for improving test method
results. However, it does not provide a recommended statistical
performance and precision.
practice for evaluating the go-no-go data.
1.2 Precision estimates developed using this practice will
1.8 This fire standard cannot be used to provide quantitative
not be statistically equivalent to precision estimates produced
measures.
by Practice E691 because a small number of laboratories are
used. The smaller number of participating laboratories will 1.9 This standard does not purport to address all of the
seriously reduce the value of precision estimates reported by
safety concerns, if any, associated with its use. It is the
this practice. However, under circumstances where only a responsibility of the user of this standard to establish appro-
limited number of laboratories are available to participate in an
priate safety, health, and environmental practices and deter-
ILS, precision estimates developed by this practice will pro- mine the applicability of regulatory limitations prior to use.
vide the user with useful information concerning precision for
1.10 This international standard was developed in accor-
a test method. dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
1.3 A minimum of three qualified laboratories is required
Development of International Standards, Guides and Recom-
for conducting an ILS using this practice. If six or more
mendations issued by the World Trade Organization Technical
laboratories are available to participate in an ILS for a given
Barriers to Trade (TBT) Committee.
fire test method, Practice E691 shall be used for conducting the
ILS.
2. Referenced Documents
1.4 Since the primary purpose of this practice is the devel- 2
2.1 ASTM Standards:
opment of the information needed for a precision statement, the
E176 Terminology of Fire Standards
experimental design in this practice will not be optimum for
E177 Practice for Use of the Terms Precision and Bias in
evaluating all materials, test methods, or as a tool for individual
ASTM Test Methods
laboratory analysis.
E178 Practice for Dealing With Outlying Observations
E456 Terminology Relating to Quality and Statistics
1.5 Because of the reduced number of participating labora-
E691 Practice for Conducting an Interlaboratory Study to
tories a Laboratory Monitor shall be used in the ILS. See
Determine the Precision of a Test Method
Standard Guide E2335.
E1169 Practice for Conducting Ruggedness Tests
E2335 Guide for Laboratory Monitors
1
This practice is under the jurisdiction of ASTM Committee E05 on Fire
Standards and is the direct responsibility of Subcommittee E05.31 on Terminology
2
and Services / Functions. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2021. Published January 2022. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2008. Last previous edition approved in 2015 as E2653-15. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E2653-21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2653 − 21
3. Terminology participate in the precision study. Precision res
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2653 − 15 E2653 − 21 An American National Standard
Standard Practice for
Conducting an Interlaboratory Study to Determine Precision
Estimates for a Fire Test Method with Fewer Than Six
1
Participating Laboratories
This standard is issued under the fixed designation E2653; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice describes the techniques for planning, conducting, analyzing, and treating results of an interlaboratory study
(ILS) for estimating the precision of a fire test method when fewer than six laboratories are available to meet the recommended
minimum requirements of Practice E691. Data obtained from an interlaboratory study are useful in identifying variables that
require modifications for improving test method performance and precision.
1.2 Precision estimates developed using this practice will not be statistically equivalent to precision estimates produced by Practice
E691 because a small number of laboratories are used. The smaller number of participating laboratories will seriously reduce the
value of precision estimates reported by this practice. However, under circumstances where only a limited number of laboratories
are available to participate in an ILS, precision estimates developed by this practice will provide the user with useful information
concerning precision for a test method.
1.3 A minimum of three qualified laboratories is required for conducting an ILS using this practice. If six or more laboratories
are available to participate in an ILS for a given fire test method, Practice E691 shall be used for conducting the ILS.
1.4 Since the primary purpose of this practice is the development of the information needed for a precision statement, the
experimental design in this practice will not be optimum for evaluating all materials, test methods, or as a tool for individual
laboratory analysis.
1.5 Because of the reduced number of participating laboratories a Laboratory Monitor shall be used in the ILS. See Standard Guide
E2335.
1.6 Field of Application—This practice is concerned with test methods that yield numerical values or a series of numerical values
for different fire-test response properties. The numerical values mentioned above are typically the result of calculations from a set
of measurements.
1.7 This practice includes design information suitable for use with the development of interlaboratory studies for test methods that
have categorization (go-no-go) allocation test results. However, it does not provide a recommended statistical practice for
evaluating the go-no-go data.
1
This practice is under the jurisdiction of ASTM Committee E05 on Fire Standards and is the direct responsibility of Subcommittee E05.31 on Terminology and Services
/ Functions.
Current edition approved July 1, 2015Dec. 1, 2021. Published August 2015January 2022. Originally approved in 2008. Last previous edition approved in 20142015 as
E2653-14.-15. DOI: 10.1520/E2653-15.10.1520/E2653-21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2653 − 21
1.8 This fire standard cannot be used to provide quantitative measures.
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.10 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
E176 Terminology of Fire Standards
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E178 Practice for Dealing With Outlying Observations
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1169 Practice for Conducting Ruggedness Tests
E2335 Guide for La
...

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5.1 ASTM regulations require precision statements in all test methods in terms of repeatability and reproducibility. This practice is used when the number of participating laboratories or materials being tested, or both, in a precision study is less than the number specified by Practice E691. When possible, it is strongly recommended that a full Practice E691 standard protocol be followed to determine test method precision. Precision results produced by the procedures presented in this standard will not have the same degree of accuracy as results generated by a full Practice E691 protocol. This procedure will allow for the development of useful precision results when a full complement of laboratories is not available for interlaboratory testing.  
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4.2.2 That transfer and pretreatment of samples occur without loss, or with known efficiency, and  
4.2.3 That data provided by the analytical instruments are accurate for the compositions and concentrations at the point of sampling.  
4.3 This document includes a comprehensive survey that will permit an individual, technically skilled and practiced in the study of analytical chemistry, to select a suitable technique from among the alternatives. It will not provide enough information for the setup and use of a procedure (this information is available in the references).  
4.4 Data generated by the use of techniques cited in this document should not be used to rank materials for regulatory purposes.
SCOPE
1.1 Analytical methods for the measurement of carbon monoxide, carbon dioxide, oxygen, nitrogen oxides, sulfur oxides, carbonyl sulfide, hydrogen halides, hydrogen cyanide, aldehydes, and hydrocarbons are described, along with sampling considerations. Many of these gases may be present in any fire environment. Several analytical techniques are described for each gaseous species, together with advantages and disadvantages of each. The test environment, sampling constraints, analytical range, and accuracy often dictate use of one analytical method over another.  
1.2 These techniques have been used to measure gases under fire test conditions (laboratory, small scale, or full scale). With proper sampling considerations, any of these methods could be used for measurement in most fire environments.  
1.3 This document is intended to be a guide for investigators and for subcommittee use in developing standard test methods. A single analytical technique has not been recommended for any chemical species unless that technique is the only one available.  
1.4 The techniques described herein can be used to determine the concentration of a specific gas in the total sample collected for analysis. These techniques do not determine the total amount of fire gases that would be generated by a specimen during a fire test.  
1.5 This standard is used to measure and describe the response of materials, products, or assembles to heat and flame under controlled conditions but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E1591-20(Guide)
Standard Guide for Obtaining Data for Fire Growth Models

SIGNIFICANCE AND USE
4.1 This guide is intended primarily for users and developers of mathematical fire growth models. It is also useful for people conducting fire tests, making them aware of some important applications and uses for small-scale fire test results. The guide thus contributes to increased accuracy in fire growth model calculations, which depend greatly on the quality of the input data.  
4.2 The emphasis of this guide is on ignition, pyrolysis and flame spread models for solid materials.
SCOPE
1.1 This guide describes data required as input for mathematical fire growth models.  
1.2 Guidelines are presented on how the data can be obtained.  
1.3 The emphasis in this guide is on ignition, pyrolysis and flame spread models for solid materials.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This fire standard cannot be used to provide quantitative measures.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E535-23(Practice)
Standard Practice for Preparation of Fire-Test-Response Standards

SIGNIFICANCE AND USE
4.1 This standard is to be used by those concerned with the development of fire-test-response standards.  
4.2 The resultant fire-test-response standards are intended to be useful in one or more of the following areas, among others: product development, quality control, product comparisons, screening, information to be used as part of a fire hazard or a fire risk assessment, and regulatory purposes.  
4.3 This practice is intended to be useful to users and developers of fire-test-response standards (Section 5) because it provides much of the general rationale for the development and use of such standards.  
4.4 This practice is not intended to provide guidance for the preparation of fire hazard assessment standards or fire risk assessment standards.  
4.5 This practice is not intended to provide guidance for the preparation of standards not related to fire-test responses of materials, products or assemblies.
SCOPE
1.1 This practice is a supplement to Form and Style for ASTM Standards,2 which shall be consulted in writing all ASTM standards.  
1.2 This practice contains, directly or by reference, all of the information required to comply with the policy on fire standards and the additional guidelines recommended by Committee E05.  
1.3 This practice, intended to assist ASTM Committees, establishes guidelines and criteria for the preparation of fire-test-response standards (that is, standards for response to heat or flame under prescribed conditions).  
1.4 This fire standard cannot be used to provide quantitative measures.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E1355-23(Guide)
Standard Guide for Evaluating the Predictive Capability of Deterministic Fire Models

SIGNIFICANCE AND USE
5.1 The process of model evaluation is critical to establishing both the acceptable uses and limitations of fire models. It is not possible to evaluate a model in total; instead, this guide is intended to provide a methodology for evaluating the predictive capabilities for a specific use. Validation for one application or scenario does not imply validation for different scenarios. Several alternatives are provided for performing the evaluation process including: comparison of predictions against standard fire tests, full-scale fire experiments, field experience, published literature, or previously evaluated models.  
5.2 The use of fire models currently extends beyond the fire research laboratory and into the engineering, fire service and legal communities. Sufficient evaluation of fire models is necessary to ensure that those using the models can judge the adequacy of the scientific and technical basis for the models, select models appropriate for a desired use, and understand the level of confidence which can be placed on the results predicted by the models. Adequate evaluation will help prevent the unintentional misuse of fire models.  
5.3 This guide is intended to be used in conjunction with other guides under development by Committee E05. It is intended for use by:  
5.3.1 Model Developers—To document the usefulness of a particular calculation method perhaps for specific applications. Part of model development includes identification of precision and limits of applicability, and independent testing.  
5.3.2 Model Users—To assure themselves that they are using an appropriate model for an application and that it provides adequate accuracy.  
5.3.3 Developers of Model Performance Codes—To be sure that they are incorporating valid calculation procedures into codes.  
5.3.4 Approving Officials—To ensure that the results of calculations using mathematical models stating conformance to this guide, cited in a submission, show clearly that the model is used withi...
SCOPE
1.1 This guide provides a methodology for evaluating the predictive capabilities of a fire model for a specific use. The intent is to cover the whole range of deterministic numerical models which might be used in evaluating the effects of fires in and on structures.  
1.2 The methodology is presented in terms of four areas of evaluation:  
1.2.1 Defining the model and scenarios for which the evaluation is to be conducted,  
1.2.2 Verifying the appropriateness of the theoretical basis and assumptions used in the model,  
1.2.3 Verifying the mathematical and numerical robustness of the model, and  
1.2.4 Quantifying the uncertainty and accuracy of the model results in predicting of the course of events in similar fire scenarios.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This fire standard cannot be used to provide quantitative measures.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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