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BS EN 12881-1:2014

$167.15

Conveyor belts. Fire simulation flammability testing – Propane burner tests

Published By Publication Date Number of Pages
BSI 2014 38
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EN 12881-1 describes four methods for measuring the propagation of a flame along a conveyor belt which has been exposed to a relatively high localized heat source such as a fire. The damage suffered by the conveyor belt, as well as its tendency to support combustion, is measured by observing the extent to which the fire spreads along the test piece.

Method A uses a test piece 2 m in length and consumes propane gas through the burner at the rate of (1,30 ± 0,05) kg per 10 min.

Method B uses a test piece 2,5 m in length and consumes propane gas through two burners mounted above and below the test piece trestle at the rate of (1,30 ± 0,05) kg per 10 min for each burner.

Method C uses a test piece 1,5 m in length and consumes propane gas through the burner at the rate of (565 ± 10) g per 50 min.

Method D uses a test piece 1,2 m in length and consumes propane gas through the burner at the rate of 150 l/hr (D1) or 190 l/hr (D2).

PDF Catalog

PDF Pages PDF Title
4 Contents Page
5 Foreword
6 Introduction
7 1 Scope
2 Normative references
3 Propane gas supply
8 4 Method A – Two metre single burner test
4.1 Apparatus
9 Figure 1 — Location of thermocouple for measuring the temperature of incoming air
10 Figure 2 — Propane burner trestle showing positions of burner and test piece
11 Figure 3 — Burner for Method A
4.2 Preparation of test pieces
4.3 Temperature at commencement of test
4.4 Number of tests
4.5 Procedure
12 4.6 Termination of tests
4.6.1 Normal termination
4.6.2 Premature termination
4.7 Measurement of damage to test pieces
4.7.1 Criteria for assessment of damage
13 4.7.2 Length of belting undamaged
Figure 4 — Measurement of length of undamaged belting
4.8 Test report
14 5 Method B – Double burner test
5.1 Apparatus
Figure 5 — Positions of trestle, double burner and test piece for Method B
15 Figure 6 — Burner for Method B
5.2 Preparation of test pieces
5.3 Temperature at commencement of test
5.4 Number of tests
16 5.5 Procedure
5.6 Termination of tests
5.6.1 Normal termination
5.6.2 Premature termination
5.7 Measurement of damage to test pieces
5.7.1 Criteria for assessment of damage
17 5.7.2 Length of belting undamaged
5.8 Test report
6 Method C – Mid-scale fire propagation test
6.1 Apparatus
19 Figure 7 — Mid-scale fire tunnel (general)
21 Figure 8 — Mid-scale fire tunnel (details)
23 Figure 9 — Trestle
24 Figure 10 — Burner assembly for Method C
Figure 11 — Jets for burner for Method C
25 6.2 Preparation of test pieces
6.3 Installation of the test pieces and burner
6.4 Temperature at commencement of test
6.5 Number of tests
6.6 Procedure
26 6.7 Termination of tests
6.7.1 Normal termination
6.7.2 Premature termination
6.8 Measurement of damage to test pieces
6.8.1 Criteria for assessment of damage
6.8.2 Length of belting undamaged
6.8.3 Temperature rise
6.8.4 Length of belting consumed
27 6.9 Exhaust temperature calibration
Figure 12 — Plot of temperature against time when no test piece is present
6.10 Test report
28 7 Method D Laboratory scale Fire Propagation Test
7.1 Apparatus
29 7.2 Preparation of test pieces
7.3 Installation of the test piece and burner
7.4 Test Conditions
Table 1 — Test Conditions
7.5 Procedure
30 7.6 Termination of tests
7.6.1 Normal termination
7.6.2 Premature termination
7.7 Measurement of damage to test pieces
7.7.1 Criteria for assessment of damage
7.7.2 Length of belting undamaged
7.8 Test report
31 Figure 13 — Test Gallery
32 Figure 14 — Exhaust Pipe
Figure 15 — Exhaust Hood
33 Figure 16 — Trestle
Figure 17 — Test arrangement
34 Figure 18 — Gas Burner
35 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC
36 Bibliography
BS EN 12881-1:2014
$167.15