FprEN 1366-9

SLOVENSKI STANDARD
oSIST prEN 1366-9:2023
01-julij-2023
Preskusi požarne odpornosti servisnih inštalacij - 9. del: Kanali za odvod dima iz
enega požarnega sektorja
Fire resistance tests for service installations - Part 9: Single compartment smoke
extraction ducts
Feuerwiderstandsprüfungen für Installationen - Teil 9: Entrauchungsleitungen für einen
Einzelabschnitt
Essais de résistance au feu des installations techniques - Partie 9 : Conduits d'extraction
de fumées relatifs à un seul compartiment
Ta slovenski standard je istoveten z: prEN 1366-9
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 1366-9:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 1366-9:2023
oSIST prEN 1366-9:2023
DRAFT
EUROPEAN STANDARD
prEN 1366-9
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2023
ICS 13.220.50 Will supersede EN 1366-9:2008
English Version
Fire resistance tests for service installations - Part 9:
Single compartment smoke extraction ducts
Essai de résistance au feu des installations de service - Feuerwiderstandsprüfungen für Installationen - Teil 9:
Partie 9 : Conduits d'extraction de fumées relatifs à un Entrauchungsleitungen für einen Einzelabschnitt
seul compartiment
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 1366-9:2023 E
worldwide for CEN national Members.

oSIST prEN 1366-9:2023
prEN 1366-9:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Test equipment . 6
5 Test conditions . 9
6 Test specimen . 10
7 Installation of test specimen . 10
8 Conditioning . 11
9 Application of instrumentation . 12
10 Test procedure . 14
11 Performance criteria . 16
12 Test report . 17
13 Direct field of application of test results . 18
Annex A (informative) Measurement of volume/mass flow . 33
A.1 Hints on measuring volume flow or mass flow with differential pressure devices . 33
A.2 Density . 33
A.3 Absolute Pressure (barometric pressure) . 33
A.4 Viscosity . 34
A.5 Characteristic data of the inlet nozzles according to Figure 10 . 34
Annex B (informative) Measurement of oxygen content . 37
Annex C (informative) The usage of correction factors for the consideration of different
parameters . 40
Bibliography . 44

oSIST prEN 1366-9:2023
prEN 1366-9:2023 (E)
European foreword
This document (prEN 1366-9:2023) 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 1366-9:2008.
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;
— Direct field of application for vertical parts of duct within the smoke compartment, without
penetrating any wall/floor where fire resistance is required.
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 1366-9:2023
prEN 1366-9:2023 (E)
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.
oSIST prEN 1366-9:2023
prEN 1366-9:2023 (E)
1 Scope
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.
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 1363-2, Fire resistance tests - Part 2: Alternative and additional procedures
EN 1366-1, Fire resistance tests for service installations - Part 1: Ducts
EN 1507, Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for
strength and leakage
EN 12237, Ventilation for buildings - Ductwork - Strength and leakage of circular sheet metal ducts
EN 60584-1, Thermocouples - Part 1: EMF specifications and tolerances (IEC 60584-1)
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)
EN ISO 13943, Fire safety - Vocabulary (ISO 13943)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1 and EN ISO 13943 and
the following apply.
3.1
single compartment smoke control system ducts
ducts for use within single fire compartment application
3.2
suspension devices
components used for suspending and fixing a duct from a floor soffit or supporting a duct from a wall
oSIST prEN 1366-9:2023
prEN 1366-9:2023 (E)
3.3
supporting construction
wall which the duct passes through in the test
3.4
single fire compartment
fire area of a single compartment building bounded by fire-resistant elements
3.5
smoke zone (zones)
areas into which a construction work is divided for the extraction of smoke and hot gases and served by
a SHEV (or sub-system of a SHEV), which is initiated by a signal from a single or group of initiation devices
associated with the zone
3.6
compensator
device that is used within ducts to prevent damage from the forces generated by expansion
3.7
smoke and heat exhaust ventilation system
SHEVS
products and/or components jointly selected to exhaust smoke and heat in order to establish a buoyant
layer of warm gases above cooler and cleaner air
4 Test equipment
4.1 General
In addition to the test equipment specified in EN 1363-1, the equipment in 4.2 to 4.4 is required. The
overall test arrangement is shown in Figure 1. Details of instrumentation and other details are shown in
Figures 2 to 10.
4.2 Furnace
The furnace shall be capable of subjecting smoke extraction ducts to the standard heating and pressure
conditions specified in EN 1363-1 and be suitable for testing ducts in the horizontal orientation (see
Figure 1).
4.3 Perforated plate
The perforated plate controls the flow through the duct so that the required differential pressure, see
Table 1, can be 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 extra
...