1、BRITISH STANDARD BS EN 1366-8:2004 Fire resistance tests for service installations Part 8: Smoke extraction ducts The European Standard EN 1366-8:2004 has the status of a British Standard ICS 13.220.50 BS EN 1366-8:2004 This British Standard was published under the authority of the Standards Policy
2、and Strategy Committee on 4 August 2004 BSI 4 August 2004 ISBN 0 580 44199 7 National foreword This British Standard is the official English language version of EN 1366-8:2004. The UK participation in its preparation was entrusted to Technical Committee FSH/22, Fire resistance tests, which has the r
3、esponsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled
4、 “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance wi
5、th a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related interna
6、tional and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 37 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendment
7、s issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13668 July2004 ICS13.220.50 Englishversion FireresistancetestsforserviceinstallationsPart8:Smoke extractionducts Essaidersistanceaufeudesinstallationsdeservice Partie8:Conduitsdextractiondefumes Feuerwi
8、derstandsprfungenfrInstallationenTeil8: Entrauchungsleitungen ThisEuropeanStandardwasapprovedbyCENon1April2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbi
9、bliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnoti
10、fiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovaki
11、a, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN1366
12、8:2004:EEN 1366-8:2004 (E) 2 Contents Page Foreword 4 Introduction5 1 Scope.6 2 Normative references.6 3 Terms and definitions 7 4 Test equipment.7 4.1 General7 4.2 Furnace7 4.3 Perforated plate7 4.4 Inlet nozzles9 4.5 Ambient temperature leakage measuring device9 4.6 Pressure sensors for differenti
13、al pressure control.9 4.7 Welded connecting tube 9 4.8 Extraction fan connecting duct.9 4.9 Extraction fan9 4.10 Thermocouples.9 4.11 Surface thermocouples9 4.12 Oxygen measuring equipment10 4.13 Restraining equipment.10 4.14 Observation window.10 5 Test conditions.10 6 Test specimen.10 6.1 Size.10
14、6.2 Number11 6.3 Design11 7 Installation of test specimen .11 7.1 General11 7.2 Standard supporting construction.11 7.3 Duct arrangement.12 7.4 Restraint of ducts .12 7.5 Perforated plate13 8 Conditioning13 8.1 General13 8.2 Hygroscopic sealing materials13 9 Application of instrumentation .13 9.1 Th
15、ermocouples.13 9.2 Pressure13 9.3 Oxygen measurements14 9.4 Observations on reduction of cross-section.14 10 Test procedure14 10.1 Pre-test calibration.14 10.2 Leakage measurement at ambient temperature14 10.3 Fire test15 EN 1366-8:2004 (E) 3 11 Performance criteria 16 11.1 General requirements 16 1
16、1.2 Criteria at ambient temperature 16 11.3 Criteria under fire conditions 17 12 Test report 17 13 Direct field of application of test results . 18 13.1 General 18 13.2 Vertical and horizontal ducts 18 13.3 Sizes of ducts . 18 13.4 Pressure difference 19 13.5 Number of sides of duct 19 Figure 6 Arra
17、ngement of gas-testing probes 25 Annex A (informative) Surface temperature and volume/mass flow measurements . 33 Bibliography 37 EN 1366-8:2004 (E) 4 Foreword This document (EN 1366-8:2004) has been prepared by Technical Committee CEN/TC 127 Fire safety in buildings, the secretariat of which is hel
18、d by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2005, and conflicting national standards shall be withdrawn at the latest by January 2005. This document has been prepared under a
19、 mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the Construction Products Directive. EN 1366 Fire resistance tests for service installations consists of the following Parts: Part 1: Ducts Part 2: Fire dampers Part 3: Pe
20、netration seals Part 4: Linear joint seals (in course of preparation) Part 5: Service ducts and shafts Part 6: Raised access and hollow core floors (in course of preparation) Part 7: Conveyor systems and their closures Part 8: Smoke extraction ducts Part 9: Single compartment smoke extraction ducts
21、(in course of preparation) Part 10: Smoke control dampers (in course of preparation) Part 11: Fire 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 imp
22、lement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdo
23、m. EN 1366-8:2004 (E) 5 Introduction This Part of this document has been prepared because a method of test for fire resisting smoke extraction ducts has become necessary to evaluate the ability of fire resisting ducts already tested to EN 1366-1 to function adequately as smoke extraction ducts. Leak
24、age is measured at both ambient and elevated temperatures. 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
25、flow measurements through a flow-measuring device located just before the extraction fan. With respect to determining leakage at elevated temperatures, oxygen measuring techniques are used. The method described in this test is complex and requires sophisticated instrumentation. It is not recommended
26、 therefore to try to test multiple assemblies in this test. 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 b
27、e 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 shall be identified a
28、nd 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. EN 1366-8:2004 (E) 6 1 Scope This Part of this document specifies a test method for det
29、ermining the fire resistance of smoke extraction ducts. It is applicable only to smoke extraction ducts that pass through another fire compartment from the fire compartment to be extracted in case of fire. It represents fire exposure of a fully developed fire. This method of test is only applicable
30、to fire resisting ducts that have passed the test for the appropriate period to EN 1366-1 (ducts A and B). For duct A, it is a requirement for fire resisting smoke extraction ducts that the document under pressure of 300 Pa, as given in EN 1366-1 is increased to 500 Pa when testing to EN 1366-1. For
31、 the purposes of the test described in this document, the duct is referred to as duct C. This test has been designed to cover both vertical and horizontal smoke extraction ducts. However, provided both horizontal and vertical tests have been carried out to EN 1366-1 on the specific system, a vertica
32、l system need not be evaluated to this method provided it has been tested in a horizontal orientation to this method. However, if the system in practice is only to be used for vertical applications in smoke extraction systems, then it will need to be tested in a vertical orientation to this method.
33、This method of test is only suitable for ducts constructed from non-combustible materials (Euroclass A1 and A2). It is applicable only to four sided ducts; one, two and three sided ducts are not covered. 2 Normative references The following referenced documents are indispensable for the application
34、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 1366-1:1999, Fire resistance tests for service ins
35、tallations - Part 1: Ducts prEN 1507, Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for strength and leakage EN ISO 5167, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full (ISO 5167
36、-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. EN 1366-8:2004 (E) 7 3 Terms and definitions For the purposes of this document, the terms and definitions given in E
37、N 1363-1:1999 and EN ISO 13943:2000 and the following apply. 3.1 smoke extraction duct duct used for the extraction of smoke in case of fire and designed to provide a degree of fire resistance 3.2 suspension devices components used for suspending and fixing a duct from a floor or supporting a duct f
38、rom a wall 3.3 supporting construction wall, partition or floor through which the duct passes in the test 3.4 compensator device that is used to prevent damage from the forces generated by expansion (see EN 1366-1 for guidance) 4 Test equipment 4.1 General In addition to the test equipment specified
39、 in EN 1363-1, the equipment in 4.2 to 4.14 is required. The overall test arrangement is shown in Figures 1 and 2. Details of instrumentation and other details are shown in Figures 3 to 13. 4.2 Furnace The furnace shall be capable of subjecting fire resisting smoke extraction ducts to the standard h
40、eating and pressure conditions specified in EN 1363-1 and be suitable for testing ducts in the horizontal (see Figure 1) or vertical (see Figure 2) orientation. 4.3 Perforated plate The perforated plate controls the flow through the duct so that the required differential pressure, see Table 1, can b
41、e achieved. Depending on the end-use conditions, a pressure level from Table 1 shall be selected; these levels correspond to typical values used in smoke extraction design. The plate shall be positioned (250 50) mm from where the duct passes through the furnace wall or roof, see Figures 1 and 2. The
42、 plates shall be made from heat resisting steel, 19 % min. Cr content and 11 % min. Ni content. The number of holes and dimensions are given in Tables 2 and 3. The thickness of the plates shall be 2,5 mm. NOTE 1 Table 2 gives details of perforated plates for standard rectangular ducts of size 1 000
43、mm x 250 mm. For smaller sizes the number of holes will be reduced proportional to the smaller cross section. NOTE 2 Table 3 gives details of perforated plates for standard circular ducts of diameter 560 mm. For smaller sizes the number of holes will be reduced proportional to the cross section (a c
44、hange to larger sizes is not permitted; see 6.1.2 and Table 5). EN 1366-8:2004 (E) 8 Further details of the plate are shown in Figures 3, 4 and 5. Table 1 Differential pressures between inside and outside the duct for smoke extraction ductwork Pressure level Operating differential pressure at ambien
45、t temperature Pa Differential pressure for 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 level Specification for perforations 1 2 3 Total number of holes 550 407 324 Number of h
46、oles 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 Table 3 Details of perforat
47、ed plate for testing circular ducts (see Figure 4) Pressure level Specification for perforations 1 2 3 Total number of holes 541 403 319 Diameter of hole (mm) 10 10 10 Distance from rim e (mm) 30 35 35 Mounting hole separation a (mm) 20,8 22,2 27,5 Mounting hole separation b (mm) 20,8 22,2 27,5 EN 1
48、366-8:2004 (E) 9 4.4 Inlet nozzles Each nozzle shall have an internal dimension of 160 mm (suitable for the standard sizes of ducts specified in 6.1), in accordance with EN ISO 5167 and ISO 5221, and shall be suitably mounted to the end of the duct with its piezometric ring connected to appropriate differential pressure measuring equipment. The measuring device shall be capable of measuring to an accuracy of + 5 %. 4.5 Ambient temperature leakage measuring device The ambient temperature leakage measuring device shall be in accordance with EN ISO 5167
