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  • ASTM
    E2653-09 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Fire Test Method with Fewer Than Six Participating Laboratories
    Edition: 2009
    $93.60
    Unlimited Users per year

Description of ASTM-E2653 2009

ASTM E2653 - 09

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

Active Standard ASTM E2653 | Developed by Subcommittee: E05.15

Book of Standards Volume: 04.07




ASTM E2653

Significance and Use

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 E 691 . When possible, it is strongly recommended that a full E 691 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 E 691 protocol. This procedure will allow for the development of useful precision results when a full compliment of laboratories is not available for interlaboratory testing.

This practice is based on recommendations for interlaboratory studies and data analysis presented in Practice E 691 . 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 E 691 interlaboratory study and data analysis are not possible.

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 E 691 . 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 E 691 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 E 691 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 E 2335 .

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 and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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 Laboratory Monitors


Keywords

interlaboratory; precision; repeatability; reproducibility; test method; Fire testing; ILS design/testing; Interlaboratory study (ILS); Precision; Repeatability/reproducibility (RR);


ICS Code

ICS Number Code 13.220.01 (General standards related to fire protection)


DOI: 10.1520/E2653-09

ASTM International is a member of CrossRef.

ASTM E2653

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