BS EN ISO 5659-2:2017
$198.66
Plastics. Smoke generation – Determination of optical density by a single-chamber test
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 60 |
This document specifies a method of measuring smoke production from the exposed surface of specimens of materials or composites. It is applicable to specimens that have an essentially flat surface and do not exceed 25 mm in thickness when placed in a horizontal orientation and subjected to specified levels of thermal irradiance in a closed cabinet with or without the application of a pilot flame. This method of test is applicable to all plastics.
It is intended that the values of optical density determined by this test be taken as specific to the specimen or assembly material in the form and thickness tested and are not to be considered inherent, fundamental properties.
The test is intended primarily for use in research and development and fire safety engineering in buildings, trains, ships, etc. and not as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke that can be generated by the materials upon exposure to heat and flame under other (actual) exposure conditions. This test procedure excludes the effect of irritants on the eye.
NOTE This test procedure addresses the loss of visibility due to smoke density, which generally is not related to irritancy potency (see Annex E).
It is emphasized that smoke production from a material varies according to the irradiance level to which the specimen is exposed. The results yielded from the method specified in this document are based on exposure to the specific irradiance levels of 25 kW/m2 and 50 kW/m2.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 7 | Foreword |
| 8 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 11 | 4 Principles of the test 5 Suitability of a material or product for testing 5.1 Material or product geometry 5.2 Surface characteristics 5.3 Asymmetrical products |
| 12 | 6 Specimen construction and preparation 6.1 Number of specimens 6.2 Size of specimens 6.3 Specimen preparation |
| 13 | 6.4 Conditioning 6.5 Wrapping of specimens 7 Apparatus and ancillary equipment 7.1 General |
| 14 | 7.2 Test chamber 7.2.1 Construction 7.2.2 Chamber pressure control facilities |
| 17 | 7.2.3 Chamber wall temperature |
| 18 | 7.3 Specimen support and heating arrangements 7.3.1 Radiator cone 7.3.2 Framework for support of the radiator cone, specimen holder and heat flux meter |
| 21 | 7.3.3 Radiator shield 7.3.4 Heat flux meter |
| 22 | 7.3.5 Specimen holder 7.3.6 Pilot burner |
| 23 | 7.4 Gas supply 7.5 Photometric system 7.5.1 General 7.5.2 Light source 7.5.3 Photo detector |
| 25 | 7.5.4 Additional equipment 7.6 Chamber leakage |
| 26 | 7.7 Cleaning materials 7.8 Ancillary equipment 7.8.1 Balance 7.8.2 Timing device 7.8.3 Linear measuring devices 7.8.4 Auxiliary heater 7.8.5 Protective equipment 7.8.6 Recorder 7.8.7 Water-circulating device 8 Test environment |
| 27 | 9 Setting-up and calibration procedures 9.1 General 9.2 Alignment of photometric system 9.2.1 General 9.2.2 Beam collimation 9.2.3 Beam focusing 9.3 Selection of compensating filter(s) |
| 28 | 9.4 Linearity check 9.5 Calibration of range-extension filter |
| 29 | 9.6 Chamber leakage rate test 9.7 Burner calibration 9.8 Radiator cone calibration |
| 30 | 9.9 Cleaning 9.10 Frequency of checking and calibrating procedure 10 Test procedure 10.1 General 10.2 Preparation of test chamber |
| 31 | 10.3 Tests with pilot flame 10.4 Preparation of the photometric system 10.5 Loading the specimen 10.6 Recording of light transmission |
| 32 | 10.7 Observations 10.8 Termination of test |
| 33 | 10.9 Testing in different modes 11 Expression of results 11.1 Specific optical density, Ds |
| 34 | 11.2 Clear-beam correction factor, Dc 12 Precision 13 Test report |
| 36 | Annex A (normative) Calibration of heat flux meter |
| 37 | Annex B (informative) Variability in the specific optical density of smoke measured in the single-chamber test |
| 39 | Annex C (informative) Determination of mass optical density |
| 44 | Annex D (informative) Precision data from tests on intumescent materials |
| 46 | Annex E (informative) Guidance on optical density testing |
| 54 | Annex F (informative) Specific sample preparation |
| 57 | Bibliography |
