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BS ISO 5660-1:2015+A1:2019:2021 Edition

BS ISO 5660-1:2015+A1:2019:2021 Edition

$198.66

Reaction-to-fire tests. Heat release, smoke production and mass loss rate – Heat release rate (cone calorimeter method) and smoke production rate (dynamic measurement)

Published By Publication Date Number of Pages
BSI 2021 64
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This part of ISO 5660 specifies a method for assessing the heat release rate and dynamic smoke production rate of specimens exposed in the horizontal orientation to controlled levels of irradiance with an external igniter. The heat release rate is determined by measurement of the oxygen consumption derived from the oxygen concentration and the flow rate in the combustion product stream. The time to ignition (sustained flaming) is also measured in this test.

The dynamic smoke production rate is calculated from measurement of the attenuation of a laser light beam by the combustion product stream. Smoke obscuration is recorded for the entire test, regardless of whether the specimen is flaming or not.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols
12 5 Principle
13 6 Apparatus
6.1 General
6.2 Cone-shaped radiant electrical heater
6.3 Radiation shield
6.4 Irradiance control
6.5 Weighing device
14 6.6 Specimen holder
6.7 Retainer frame
6.8 Exhaust gas system with flow measuring instrumentation
6.9 Gas sampling apparatus
15 6.10 Ignition circuit
6.11 Ignition timer
6.12 Oxygen analyser
6.13 Heat flux meters
6.14 Calibration burner
16 6.15 Data collection and analysis system
6.16 Optional side screens
6.17 Smoke obscuration measuring system
6.18 Smoke system thermocouple
6.19 Optical filters
17 7 Suitability of a product for testing
7.1 Surface characteristics
7.2 Asymmetrical products
7.3 Materials of short burning time
7.4 Composite specimens
7.5 Dimensionally unstable materials
18 7.6 Materials that require testing under compression
8 Specimen construction and preparation
8.1 Specimens
19 8.2 Conditioning of specimens
8.3 Preparation
8.3.1 Specimen wrapping
8.3.2 Specimen preparation
8.3.3 Preparing specimens of materials that require testing under compression
20 9 Test environment
10 Calibration
10.1 Preliminary calibrations
10.1.1 General
10.1.2 Irradiance control system response characteristics
10.1.3 Weighing device response time
10.1.4 Weighing device output drift
10.1.5 Oxygen analyser delay and response times
21 10.1.6 Oxygen analyser output noise and drift
10.1.7 Effect of side screens
22 10.2 Operating calibrations
10.2.1 General
10.2.2 Weighing device accuracy
10.2.3 Oxygen analyser
10.2.4 Heat release rate calibration
23 10.2.5 Heater calibration
10.3 Smoke meter calibration
10.3.1 Calibration with neutral density filters
10.3.2 Calibration before test
10.4 Less frequent calibrations
10.4.1 Operating heat flux meter calibration
10.4.2 Linearity of heat release rate measurements
10.4.3 Accuracy of calibration burner flow meter
24 11 Test procedure
11.1 General precautions
11.2 Initial preparation
25 11.3 Procedure
26 12 Calculations
12.1 General
12.2 Calibration constant for oxygen consumption analysis
12.3 Heat release rate
27 12.4 Exhaust duct flow rate
12.5 Mass loss rate
28 12.6 Smoke obscuration
13 Test report
39 Annex A (informative) Commentary and guidance notes for operators
44 Annex B (informative) Supplementary calculations — Normalization to the mass loss rate of the specific extinction area of specimen
46 Annex C (informative) Resolution, precision and bias
52 Annex D (informative) Mass loss rate and effective heat of combustion
53 Annex E (informative) Testing in the vertical orientation
56 Annex F (informative) Calibration of the working heat flux meter
57 Annex G (informative) Calculation of heat release with additional gas analysis
61 Annex H (informative) Calculation of Effective Critical Heat Flux for Ignition
62 Bibliography

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BS ISO 5660-1:2015+A1:2019
$198.66