EN 1366-8:2024
(Main)Fire resistance tests for service installations - Part 8: Smoke extraction ducts
Fire resistance tests for service installations - Part 8: Smoke extraction ducts
This document specifies a test method for determining the fire resistance of smoke extraction ducts. It is applicable only to smoke extraction ducts that pass through another fire compartment apart from the compartment from where smoke needs to be extracted in case of fire. It represents fire exposure of a fully developed fire.
This method of test is only applicable to fire resistant ventilation ducts (same construction) with the following classification according to EN 13501-3:
- fire from inside and outside i ↔ o;
- applicable to a pressure difference up to 500 Pa in fire conditions;
NOTE 1 It is assumed that the duct A test(s) in accordance with EN 1366-1 has been performed with an under-pressure of minimum 500 Pa.
- with integrity (E) and insulation (I) criteria equal to or higher than the intended classification for the smoke extraction duct.
For the purposes of the test described in this document, the duct is referred to as duct C.
This test method has been designed to cover both vertical and horizontal smoke extraction ducts. A vertical system need not be evaluated to this method provided that:
- both horizontal (ho) and vertical (ve) classification according to EN 13501-3 has been obtained for the ventilation duct;
- it has been tested in a horizontal orientation to this method.
If the ventilation duct in practise is only used for vertical applications in smoke extraction systems, only vertical (ve) classification is obtained in accordance with EN 13501-3 and tested only in a vertical orientation to this test method.
This test method is suitable for ducts constructed from non-combustible materials (class A1 and A2-s1, d0 according to EN 13501-1).
NOTE 2 Reaction with components of the duct can affect the oxygen concentration inside the duct leading to inaccurate calculation of the leakage rate. If it is determined this has happened refer to Annex D.
This document applies to four sided rectangular and circular ducts only (with fire exposure on all sides). Ducts that utilize elements of construction for one, two or three sides are not covered. An alternative test method for one, two and three sided ducts will be developed separately.
Feuerwiderstandsprüfungen für Installationen - Teil 8: Entrauchungsleitungen
Dieses Dokument legt ein Prüfverfahren zur Bestimmung der Feuerwiderstandsfähigkeit von Entrauchungsleitungen fest. Dieses Prüfverfahren gilt nur für Entrauchungsleitungen, die von einem Brandraum, aus dem der Rauch im Brandfall abgesaugt werden soll, über einen weiteren Brandraum führen. Es stellt die Brandeinwirkung für einen Vollbrand dar.
Dieses Prüfverfahren ist nur für feuerwiderstandsfähige Lüftungsleitungen (gleiche Konstruktion) mit der folgenden Klassifizierung nach EN 13501-3 anwendbar:
- Feuer von innen und außen i ↔ o;
- anwendbar bis zu einer Druckdifferenz von bis zu 500 Pa bei Brandbedingungen;
ANMERKUNG 1 Es wird angenommen, dass der/die Prüfung(en) von Kanal A entsprechend EN 1366-1 mit einem Unterdruck von mindestens 500 Pa durchgeführt wurde.
- mit Raumabschluss- (E) und Wärmedämmungskriterien (I) gleich oder höher als die geplante Klassifizierung für die Entrauchungsleitung.
Für die in diesem Dokument beschriebene Prüfung wird die Leitung als Leitung C bezeichnet.
Dieses Prüfverfahren ist sowohl für vertikale als auch horizontale Entrauchungsleitungen vorgesehen. Ein vertikales System muss nicht nach diesem Verfahren geprüft werden, wenn:
- sowohl die horizontale (ho) als auch die vertikale (ve) Klassifizierung nach EN 13501-3 für die Belüftungsleitung ermittelt wurde;
- es nach diesem Verfahren in horizontaler Anordnung geprüft wurde.
Wenn die Lüftungsleitung in der Praxis nur für vertikale Anwendungen in Entrauchungsanlagen verwendet wird, wird nur die vertikale (ve) Klassifizierung nach EN 13501-3 erlangt und nur in einer vertikalen Ausrichtung zu diesem Prüfverfahren geprüft.
Dieses Prüfverfahren ist nur für Leitungen aus nichtbrennbaren Baustoffen geeignet (Klasse A1 und A2-s1, d0 nach EN 13501-1).
ANMERKUNG 2 Die Reaktion mit Komponenten der Leitung kann die Sauerstoffkonzentration in der Leitung beeinflussen und zu ungenauen Berechnungen Leckagerate führen. Wenn festgestellt wird, dass dies der Fall ist, siehe Anhang D.
Dieses Dokument ist nur für vierseitige rechteckige und kreisförmige Leitungen anwendbar (mit Brandeinwirkung auf allen vier Seiten). Leitungen, die Bauelemente für eine, zwei oder drei Seiten verwenden, werden nicht behandelt. Ein alternatives Prüfverfahren für ein-, zwei- und dreiseitige Leitungen wird separat entwickelt.
Essais de résistance au feu des installations techniques - Partie 8 : Conduits d'extraction de fumées
Le présent document définit une méthode d’essai de détermination de la résistance au feu des conduits d’extraction de fumées et s’applique uniquement aux conduits d’extraction de fumée qui traversent un compartiment différent du compartiment feu dont les fumées sont à extraire en cas d’incendie. Il décrit les conditions d’exposition à un feu pleinement développé.
Cette méthode d’essai est uniquement applicable aux conduits de ventilation résistant au feu (construits de la même façon) ayant le classement suivant conformément à l’EN 13501-3 :
- feu provenant de l’intérieur ou de l’extérieur, i ↔ o ;
- applicable à un différentiel de pression allant jusqu’à 500 Pa dans des conditions d’incendie ;
NOTE 1 Par hypothèse, l’essai ou les essais sur les conduits A ont été réalisés avec une dépression d’au moins 500 Pa, conformément à l’EN 1366-1.
- ayant des critères d’étanchéité au feu (E) et d’isolation (I) supérieurs ou égaux au classement prévu pour le conduit d’extraction de fumées.
Pour les besoins des essais décrits dans le présent document, le conduit concerné est appelé conduit C.
Cette méthode d’essai a été conçue pour couvrir aussi bien les conduits d’extraction de fumées verticaux qu’horizontaux. Il n’est pas nécessaire d’évaluer un système vertical selon cette méthode si :
- les classements aussi bien horizontal (ho) que vertical (ve) conformément à l’EN 13501-3 ont été obtenus pour le conduit de ventilation ;
- les essais horizontaux ont été effectués suivant cette méthode.
Si, dans la pratique, le conduit de ventilation n’est utilisé que pour des applications verticales dans des systèmes d’extraction de fumées, seul le classement vertical (ve) est obtenu conformément à l’EN 13501-3 et le conduit n’est soumis à essai que dans une orientation verticale selon cette méthode d’essai.
Cette méthode d’essai est valable pour des conduits fabriqués à partir de matériaux non combustibles (classe A1 et A2 s1, d0 conformément à l’EN 13501-1).
NOTE 2 Des réactions avec les composants du conduit peuvent affecter la concentration d’oxygène à l’intérieur du conduit menant à un calcul imprécis du débit de fuite. S’il est déterminé que ceci s’est produit, consulter l’Annexe D.
Le présent document s’applique uniquement aux conduits rectangulaires et circulaires à quatre côtés (avec exposition au feu sur tous les côtés). Les conduits constitués d’éléments de construction pour un, deux ou trois côtés ne sont pas couverts. Une méthode d’essai différente pour les conduits à un, deux et trois côtés sera développée spécifiquement.
Preskusi požarne odpornosti servisnih inštalacij – 8. del: Kanali za odvod dima
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 1366-8:2023
01-julij-2023
Preskusi požarne odpornosti servisnih inštalacij – 8. del: Kanali za odvod dima
Fire resistance tests for service installations - Part 8: Smoke extraction ducts
Feuerwiderstandsprüfungen für Installationen - Teil 8: Entrauchungsleitungen
Essais de résistance au feu des installations techniques - Partie 8: Conduits d'extraction
de fumées
Ta slovenski standard je istoveten z: prEN 1366-8
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
oSIST prEN 1366-8:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 1366-8:2023
oSIST prEN 1366-8:2023
DRAFT
EUROPEAN STANDARD
prEN 1366-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2023
ICS 13.220.50 Will supersede EN 1366-8:2004
English Version
Fire resistance tests for service installations - Part 8:
Smoke extraction ducts
Essai de résistance au feu des installations de service - Feuerwiderstandsprüfungen für Installationen - Teil 8:
Partie 8: Conduits d'extraction de fumées Entrauchungsleitungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 127.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1366-8:2023 E
worldwide for CEN national Members.
oSIST prEN 1366-8:2023
prEN 1366-8:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Test equipment . 7
5 Test conditions . 9
6 Test specimen . 10
7 Installation of test specimen . 12
8 Conditioning . 13
9 Application of instrumentation . 13
10 Test procedure . 15
11 Performance criteria . 18
12 Test report . 20
13 Field of direct application of test results . 21
Annex A (normative) Measurement of volume/mass flow . 38
A.1 Hints on measuring volume flow or mass flow with differential pressure devices . 38
A.2 Density . 38
A.3 Absolute Pressure (barometric pressure) . 39
A.4 Viscosity . 39
A.5 Characteristic data of the inlet nozzles according to Figure 7 of this standard . 40
Annex B (informative) Measurement of oxygen concentration Details on measuring oxygen
concentration with paramagnetic cell analysers . 43
B.1 General. 43
B.2 Choice of O measuring devices . 43
B.3 Effect of O measuring device errors . 44
B.4 Zero and end point drift . 44
Annex C (informative) The usage of correction factors for the consideration of different
parameters . 46
C.1 Details for the development of the correction factors and their error limits . 46
C.2 The complete formula for the leakage mass flow and the parameters . 46
C.3 Application of correction factors in the simple mass flow formulae and achievable
accuracy . 49
Bibliography . 50
oSIST prEN 1366-8:2023
prEN 1366-8:2023 (E)
European foreword
This document (prEN 1366-8:2023) has been prepared by Technical Committee CEN/TC 127 “Fire safety
in buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1366-8:2004.
In comparison with the previous edition, the following technical modifications have been made:
— method for determination of reduction in internal cross-section area is added;
— positions for measurement of deflection of cross-section outside furnace are defined;
— introduction of an alternative oxygen sampling probe;
— use of two separate O analysers based on paramagnetic measurement method for the two sampling
points is mandatory;
— failure criteria for mechanical stability of duct inside furnace defined.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
EN 1366, Fire resistance tests for service installations consists of the following parts:
— Part 1: Ventilation ducts;
— Part 2: Fire dampers;
— Part 3: Penetration seals;
— Part 4: Linear joint seals;
— Part 5: Service ducts and shafts;
— Part 6: Raised access and hollow core floors;
— Part 7: Conveyor systems and their closures;
— Part 8: Smoke extraction ducts;
— Part 9: Single compartment smoke extraction ducts;
— Part 10: Smoke control dampers;
— Part 11: Fire protective Systems for cable systems and associated components;
— Part 12: Non-mechanical fire barrier for ventilation ductwork;
— Part 13: Chimneys.
oSIST prEN 1366-8:2023
prEN 1366-8:2023 (E)
Introduction
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.
Leakage 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
flow measurements through a flow-measuring device located just before the extraction fan. With respect
to determining leakage at elevated temperatures, oxygen concentration measuring techniques are used.
The method described in this test is complex and requires sophisticated instrumentation. It is not
recommended therefore to try to test multiple assemblies in this test.
The attention of all persons concerned with managing and carrying out this fire resistance test is drawn
to the fact that fire testing can be hazardous and that there is a possibility that toxic and/or harmful
smoke and gases might be evolved during the test. Mechanical and operational hazards might 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.
oSIST prEN 1366-8:2023
prEN 1366-8:2023 (E)
1 Scope
This document specifies a test method for determining 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 to fire resistant ventilation ducts (same construction) with the
following classification according to EN 13501-3:
— fire from inside and outside i ↔ o;
— applicable to a pressure difference up to 500 Pa;
NOTE 1 It is assumed that the duct A test(s) in accordance with EN 1366-1 has been performed with an
under-pressure of minimum 500 Pa.
— with integrity (E) and insulation (I) criteria equal to or higher than the intended classification for the
smoke extraction duct.
For the purposes of the test described in this document, the duct is referred to as duct C.
This test method has been designed to cover both vertical and horizontal smoke extraction ducts. A
vertical system need not be evaluated to this method provided that:
— both horizontal (ho) and vertical (ve) classification according to EN 13501-3 has been obtained for
the ventilation duct, and
— it has been tested in a horizontal orientation to this method.
If the ventilation duct in practice is only used for vertical applications in smoke extraction systems, only
vertical (ve) classification is bound to be used and tested in a vertical orientation to this method according
to EN 13501-3.
This test method is suitable for ducts constructed from non-combustible materials (Euroclass A1 and A2
according to EN 13501-1).
NOTE 2 Reaction with components of the duct can reduce the oxygen concentration and lead to
misinterpretation of the calculated leakage rate.
This standard applies to four sided ducts only (with fire exposure on all four sides). Ducts that utilize
elements of construction for one, two or three sides are not covered. An alternative test method for one,
two and three sided ducts will be developed separately.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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, Fire resistance tests - Part 1: General requirements
EN 1366-1, Fire resistance tests for service installations - Part 1: Ventilation ducts
EN 1507, Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for
strength and leakage
EN 10095, Heat resisting steels and nickel alloys
oSIST prEN 1366-8:2023
prEN 1366-8:2023 (E)
EN 13501-3, Fire classification of construction products and building elements - Part 3: Classification using
data from fire resistance tests on products and elements used in building service installations: fire resisting
...
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