BS 476-13:1987
Current
The latest, up-to-date edition.
Fire tests on building materials and structures Method of measuring the ignitability of products subjected to thermal irradiance
Hardcopy , PDF
English
30-06-1987
National foreword
Committees responsible
Method
0 Introduction
1 Scope and field of application
2 References
3 Definitions
4 Principles of the test
5 Suitability of a product for testing
6 Specimen construction and preparation
7 Test apparatus
8 Test environment
9 Additional equipment
10 Setting up procedure and requirements
11 Calibration
12 Test procedure
13 Expression of results
14 Test report
Annexes
A Commentary on the text and guidance note for
operators
B Summary test report
C Application and limitations of test
D Variability in time to sustained surface ignition
Table
Coefficients of variation, repeatabilities and
reproducibilities of time to sustained surface ignition
Figures
1 Wrapping of the specimen
2 Ignitability test apparatus - general view
3a Specimen support framework - part sectional
elevation along B-B
3b Specimen support framework - part sectional plan
along A-A
4a Specimen support framework and radiator cone
4b Radiator cone
4c Methods for attachment of thermocouples to heater
coil
4d Grids of readings for irradiance distribution
5 Pilot flame nozzle
6a Pilot flame application mechanism - pilot flame arm
6b Pilot flame application mechanism - base plate (plan
view)
6c Pilot flame application mechanism - cam geometry
7 Specimen insertion and location tray
8 Specimen screening plate
9 Extraction hood and draught screen for ignitability
apparatus
10 Diagrammatic arrangement of apparatus and additional
equipment
11 Dummy specimen board
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