BS ISO 17554:2014

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle
6 Apparatus
7 Suitability of a product for testing
8 Specimen construction and preparation
9 Test environment
10 Calibration
11 Test procedure
12 Calculations
13 Test report
Annex A (informative) - Commentary and guidance
        notes for operators
Annex B (informative) - Calculation of Effective
        Critical Heat Flux for Ignition
Annex C (informative) - Calibration of the working
        heat flux meter
Bibliography

States a small-scale method for assessing the mass loss rate of essentially flat specimens exposed in the horizontal orientation to controlled levels of radiant heating with an external igniter under well-ventilated conditions.

This International Standard specifies a small-scale method for assessing the mass loss rate of essentially flat specimens exposed in the horizontal orientation to controlled levels of radiant heating with an external igniter under well-ventilated conditions. The mass loss rate is determined by measurement of the specimen mass and is derived numerically. The time to ignition (sustained flaming) is also measured in this test. Mass loss rate can be used as an indirect measure of heat release rate for many products. However, this is not an apparatus for determining heat release rates, and the measured mass loss rates for some products are not so closely linked to their heat release rates. Such products need to be tested in accordance with ISO5660-1 for correct assessment of heat release.