BS ISO 29473:2010

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Principles
5 Evaluating standard uncertainty
6 Determining combined standard uncertainty
7 Determining expanded uncertainty
8 Reporting uncertainty
9 Summary of procedure for evaluating and expressing
  uncertainty
Annex A (informative) - Basic concepts of measurement
        uncertainty
Annex B (informative) - Uncertainty of fire test results
Annex C (informative) - Example of estimating the uncertainty
        in heat release measurements in the cone calorimeter
Bibliography

Provides guidance on the evaluation and expression of uncertainty of fire test method measurements.

This International Standard gives guidance on the evaluation and expression of uncertainty of fire test method measurements developed and maintained by ISO/TC92, based on the approach presented in ISO/IEC Guide98-3.

Application of this International Standard is limited to tests that provide quantitative results in engineering units. This includes, for example, methods for measuring the heat release rate of burning specimens based on oxygen consumption calorimetry, as in ISO5660-1:2002.

This International Standard does not apply to tests that provide results in the form of indices or binary results (e.g. pass/fail).

In some cases, additional guidance will be required to supplement this International Standard. For example, the expression and use of uncertainty at low levels may require additional guidance and uncertainties associated with sampling are not explicitly addressed.

NOTE1 The procedures described in this International Standard involve some complex mathematics. Basic concepts of measurement uncertainty are provided in AnnexA.

NOTE2 The guidelines presented in this International Standard may also be used to evaluate and express the uncertainty associated with fire test results. However, it is not always possible to quantify the uncertainty of fire test results as some sources of uncertainty cannot be accounted for.