BS EN 12881-1:2014
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Conveyor belts. Fire simulation flammability testing – Propane burner tests
Published By | Publication Date | Number of Pages |
BSI | 2014 | 38 |
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 |