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BSI 23/30444341 DC:2023 Edition

BSI 23/30444341 DC:2023 Edition

$13.70

BS EN 1366-9. Fire resistance tests for service installations – Part 9. Single compartment smoke extraction ducts

Published By Publication Date Number of Pages
BSI 2023 46
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This part of EN 1366 specifies a test method for determining the fire resistance of smoke extraction ducts that are used for single compartment applications only. In such applications, the smoke extraction system is only intended to function up to flashover (typically 600 °C). This method of test is only suitable for ducts constructed from non-combustible materials (euro class A1 and A2-s1, d0). It is applicable only to four sided and circular ducts. One-, two- and three-sided ducts are not covered. This standard is applicable only for the standard sizes or smaller as described. This test method of part 9 is applicable only to smoke extraction ducts that do not pass into other fire compartments. For smoke extraction ducts that pass into other compartments, the method of test described in EN 1366-8 is used. The smoke extraction duct is part of the smoke extraction system which also includes smoke control dampers and smoke extract fans.

PDF Catalog

PDF Pages PDF Title
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Test equipment
4.1 General
4.2 Furnace
4.3 Perforated plate
10 4.4 Inlet nozzles (fire test)
4.5 Ambient temperature leakage measuring device
4.6 Pressure sensors for differential pressure control
4.7 Welded connecting tube
4.8 Extract fan connecting duct
4.9 Extraction fan
4.10 Thermocouples
11 4.11 Oxygen measuring equipment
4.12 Oxygene measurement probes
4.13 Restraint equipment
4.14 Deflection measurements
5 Test conditions
5.1 Differential pressure conditions
5.2 Heating conditions
12 6 Test specimen
6.1 Size
6.1.1 Length
6.1.2 Cross-section
6.2 Number
6.3 Design
7 Installation of test specimen
7.1 General
13 7.2 Supporting construction
7.3 Duct arrangement
7.4 Restraint of ducts
7.4.1 Inside the furnace
7.4.2 Outside the furnace
7.5 Perforated plate
8 Conditioning
8.1 General
14 8.2 Water based sealing materials
9 Application of instrumentation
9.1 Thermocouples
9.1.1 Furnace thermocouples (plate thermometers)
9.1.2 Gas temperature within flow nozzles
9.2 Pressure
9.2.1 Furnace pressure
9.2.2 Differential under-pressure in duct
9.3 Oxygen measurements
15 9.4 Deflection measurement for determination of reduction in internal cross-section area
16 10 Test procedure
10.1 Pre-test calibration
10.1.1 Oxygen-measuring instrument
10.1.2 Perforated plate
10.2 Leakage measurement at ambient temperature
17 10.3 Pre-fire test procedures
10.4 Fire test
18 10.5 Termination of test
11 Performance criteria
11.1 General requirements
19 11.2 Criteria at ambient temperature
11.2.1 Ambient leakage
11.2.2 Reduction in internal cross-section area under ambient conditions outside the furnace
11.3 Criteria under fire conditions
11.3.1 General
11.3.2 Integrity
11.3.2.1 Leakage
11.3.2.2 Reduction in internal cross-section area under fire conditions
11.3.2.3 Mechanical stability
11.3.3 Smoke Leakage
12 Test report
20 13 Direct field of application of test results
13.1 General
13.2 Duct sizes
21 13.3 Suspension device
13.4 Pressure difference
13.5 Vertical part of duct
35 Annex A (informative)Measurement of volume/mass flow
A.1 Hints on measuring volume flow or mass flow with differential pressure devices
A.2 Density
A.3 Absolute Pressure (barometric pressure)
36 A.4 Viscosity
A.5 Characteristic data of the inlet nozzles according to Figure 10
39 Annex B (informative)Measurement of oxygen content
42 Annex C (informative)The usage of correction factors for the consideration of different parameters

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BSI 23/30444341 DC
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