EN 1366-9:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test equipment
   4.1 General
   4.2 Furnace
   4.3 Perforated plate
   4.4 Inlet nozzles (fire test)
   4.5 Ambient 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
   4.11 Oxygen measuring equipment
   4.12 Restraint equipment
   4.13 Observation window
5 Test conditions
   5.1 Differential pressure conditions
   5.2 Heating conditions
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
   7.2 Standard supporting construction
   7.3 Duct arrangement
   7.4 Restraint of ducts
   7.5 Perforated plate
8 Conditioning
   8.1 General
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
   9.3 Oxygen measurements
   9.4 Observations of reduction of cross-section
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
   10.3 Fire test
        10.3.1 Extraction fan
        10.3.2 Ignition of furnace
        10.3.3 Furnace conditions
        10.3.4 Temperatures and pressures
        10.3.5 Oxygen measurements
        10.3.6 General observations
        10.3.7 Reduction of cross-section
        10.3.8 Leakage calculations
        10.3.9 Termination of test
11 Performance criteria
   11.1 General requirements
   11.2 Criteria at ambient temperature
   11.3 Criteria under fire conditions
        11.3.1 General
        11.3.2 Leakage
        11.3.3 Reduction in cross-section
        11.3.4 Mechanical stability
12 Test report
13 Direct field of application of test results
   13.1 General
   13.2 Duct sizes
   13.3 Hangers
   13.4 Pressure difference
   13.5 Number of sides of duct
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)
      A.4 Viscosity
      A.5 Characteristic data of the inlet nozzles
          according to Figure 10
Annex B (informative) - Measurement of oxygen content
Annex C (informative) - The usage of correction factors for
                        the consideration of different parameters
Bibliography

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 test has been designed to cover horizontal smoke extraction ducts intended for single compartment applications only.This test method of part 9 is applicable only to smoke extraction ducts that do not pass through into other fire compartments. It represents fire exposure of a developing fire (pre-flashover). For smoke extraction ducts that pass through into other compartments, the method of test described in EN 1366-8 should be used.The smoke extraction duct is part of the smoke extraction system which also includes smoke control dampers and smoke extract fans.The method described in this test standard is complex and requires sophisticated instrumentation. It is not recommended therefore to try to test multiple assemblies in this test.