SIST EN 1366-9:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskusi požarne odpornosti servisnih napeljav - 9. del: Kanali za odvod dima iz enega požarnega sektorjaFeuerwiderstandsprüfungen für Installationen - Teil 9: Entrauchungsleitungen für einen EinzelabschnittEssai de résistance au feu des installations de service - Partie 9 : Conduits d'extraction de fumées relatifs à un seul compartimentFire resistance tests for service installations - Part 9: Single compartment smoke extraction ducts91.060.40Dimniki, jaški, kanaliChimneys, shafts, ducts13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 1366-9:2008SIST EN 1366-9:2008en01-maj-2008SIST EN 1366-9:2008SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1366-9March 2008ICS 13.220.50 English VersionFire resistance tests for service installations - Part 9: Singlecompartment smoke extraction ductsEssai de résistance au feu des installations de service -Partie 9 : Conduits d'extraction de fumées relatifs à un seulcompartimentFeuerwiderstandsprüfungen für Installationen - Teil 9:Entrauchungsleitungen für einen EinzelabschnittThis European Standard was approved by CEN on 21 January 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1366-9:2008: ESIST EN 1366-9:2008

Measurement of volume/mass flow.30 A.1 Hints on measuring volume flow or mass flow with differential pressure devices.30 A.2 Density.30 A.3 Absolute Pressure (barometric pressure).30 A.4 Viscosity.31 A.5 Characteristic data of the inlet nozzles according to Figure 10.31 Annex B (informative)
Measurement of oxygen content.35 Annex C (informative)
The usage of correction factors for the consideration of different parameters.39
Part 10: Smoke control dampers (in course of preparation) Part 11: Protective systems for essential services (in course of preparation) According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
Introduction This part of this European Standard has been prepared because a method of test for smoke extraction ducts used in single compartment applications has become necessary. This test exposes a smoke extraction duct to conditions intended to represent the pre-flashover stage of a fire. Leakage is measured at both ambient temperature and exposure at 600 °C. During the tests, air/gases are drawn through the duct at a differential pressure between the inside and outside of the duct. Leakage is determined at ambient temperature by sealing the openings in the duct located in the furnace and taking flow measurements through a flow measuring device located just before the extraction fan. With respect to determining leakage at 600 °C, oxygen-measuring techniques are used. CAUTION — The attention of all persons concerned with managing and carrying out this fire resistance test is drawn to the fact that fire testing may be hazardous and that there is a possibility that toxic and/or harmful smoke and gases may be evolved during the test. Mechanical and operational hazards may also arise during the construction of the test elements or structures, their testing and disposal of test residues. An assessment of all potential hazards and risks to health should be made and safety precautions should be identified and provided. Written safety instructions should be issued. Appropriate training should be given to relevant personnel. Laboratory personnel should ensure that they follow written safety instructions at all times.
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. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1363-1:1999, Fire resistance tests - Part 1: General requirements EN 1363-2, Fire resistance tests - Part 2: Alternative and additional procedures EN 1366-1:1999, Fire resistance tests for service installations - Part 1: Ducts EN 1751, Ventilation for buildings - Air terminal devices - Aerodynamic testing of dampers and valves EN 60584-1, Thermocouples - Part 1: Reference tables (IEC 60584- 1:1995) EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements (ISO 5167-1:2003) EN ISO 13943:2000, Fire safety - Vocabulary (ISO 13943:2000) ISO 5221, Air distribution and air diffusion - Rules to methods of measuring air flow rate in an air handling duct
Operating differential pressure at ambient temperature Pa Differential pressure for the fire test and pre-test calibration Pa 1 -500 -150 2 -1 000 -300 3 -1 500 -500
Table 2 — Details of perforated plates for testing rectangular ducts (see Figure 3) Pressure level1) Specification for perforations 1 2 3 Total number of holes 550 407 324 Number of holes - horizontally 50 37 36 Number of holes - vertically 11 11 9 Diameter of hole (mm) 10 10 10 Horizontal distance from rim e (mm) 15 15 20 Vertical distance from rim c (mm) 15 15 20 Mounting hole separation a (mm) 19,8 26,9 27,4 Mounting hole separation b (mm) 21,8 22 26,3
1) see Clause 5. SIST EN 1366-9:2008

Table 3 — Details of perforated plate for testing circular ducts (see Figure 4) Pressure level1) Specification for perforations 1 2 3 Total number of holes 541 403 319 Diameter of hole (mm) 10 10 10 Horizontal distance from rim e (mm) 30 35 35 Mounting hole separation a (mm)
23 25,5
1,5 mm sheathed thermocouples shall be provided for measuring the gas temperature adjacent to the nozzles. An alternative thermocouple may be used, provided it can be shown to have equivalent response time. 4.11 Oxygen measuring equipment Equipment for measuring the oxygen content of gases shall be provided. This system shall consist of paramagnetic cell oxygen analysers together with appropriate equipment for cooling, filtering and drying the gases. Appropriate connecting tubes and probes shall be provided. The 90 % response time of the complete system shall be 20 s maximum. The accuracy shall be better than ± 0,1 vol %. SIST EN 1366-9:2008

6.1.2 Cross-section The sizes of duct given in Table 6 shall be tested unless smaller cross-sections are required for specific applications. SIST EN 1366-9:2008

6.2 Number One test specimen shall be tested for each type of installation to be evaluated. 6.3 Design The test shall be made on a test specimen representative of the complete duct. Each type of duct requires a different approach and an attempt shall be made to reproduce the edge conditions and the method of fixing or support inside and outside the furnace representative of that used in practice. The distance between hangers or supports shall be representative. Where compensators are used in practice, then they shall be incorporated in the test specimen. In this case, the compensator shall be located outside the furnace, approximately 500 mm from the perforated plate. 7 Installation of test specimen 7.1 General The test specimen shall be installed, as far as practicable, in a manner representative of its use in practice. The fire-stopping at the penetration through the supporting construction shall be sufficient to prevent leakage of furnace gases. Parts of the ducts within the furnace shall be exposed to fire from all sides over their whole length. 7.2 Standard supporting construction A standard supporting construction shall be selected from the specifications detailed in EN 1366-1:1999. Where the duct passes through an opening in the furnace wall, the opening shall be of sufficient dimensions to allow for the supporting construction to surround all faces of the duct by at least 200 mm. To ensure that leaking furnace gas does not occur, it is important that the supporting construction and furnace roof is well sealed where it contacts the furnace wall. 7.3 Duct arrangement 7.3.1 A single duct may be tested in the furnace, or alternatively, two or more ducts may be tested in the same furnace, provided that there is sufficient space to do so, in accordance with the dimensions shown in Figure 1. 7.3.2 Ducts shall be arranged as shown in Figure 1. The end of the ducts within the furnace shall be closed independently of any furnace enclosure by materials and construction similar to the remainder of the duct. SIST EN 1366-9:2008

7.3.3 The test arrangement shall include at least one joint or flange connection inside the furnace and at least one joint or flange connection outside it (see Figure 1). Any stiffeners used to maintain the cross-section of the duct shall be arranged at the positions and centres specified by the sponsor. The distance between joint and hangers shall not be less than intended in practice. If the minimum distance has not been specified, hangers shall be arranged so that the joint at mid-span lies midway between them. Centres of the hangers should be specified by the manufacturer and shall be representative of practice. 7.3.4 Two openings shall be provided, one on each vertical side of the duct inside the furnace. The openings shall be positioned (500 ± 25) mm from the furnace wall. Each opening shall have the same breadth/height ratio as the cross-section of the duct and have a total opening area of (50 ± 5) % of the cross-sectional area of the duct. For circular ducts the total opening may be square or circular (Each opening will have an area of (25 ± 5) % of the cross-sectional area of the duct). 7.3.5 There shall be a clearance of (500 ± 50) mm between the top of the duct and the ceiling and at least 500 mm between the underside of the duct and the floor. Similarly, there shall be a clearance of at least 500 mm between the sides of the duct and furnace walls. 7.4 Restraint of ducts Inside the furnace, the duct will be fully restrained in all directions at the furnace wall or floor remote from the penetration point (see Figure 7). Where there is a possibility of the furnace wall moving, then the fixings shall be made to be independent of the furnace structure. The outside of the duct shall be restrained as shown in EN 1366-1:1999. 7.5 Perfor
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