EN 13823:2020+A1:2022
(Main)Reaction to fire tests for building products - Building products excluding floorings exposed to the thermal attack by a single burning item
Reaction to fire tests for building products - Building products excluding floorings exposed to the thermal attack by a single burning item
This document specifies a method of test for determining the reaction to fire performance of construction products excluding floorings, and excluding products which are indicated in Delegated Regulation (EU) 2016/364, when exposed to thermal attack by a single burning item (SBI). The calculation procedures are given in Annex A. Information on the precision of the test method is given in Annex B. The calibration procedures are given in Annexes C and D, of which Annex C is a normative annex.
NOTE This document has been developed to determine the reaction to fire performance of essentially flat products. The treatment of some families of products, e.g. linear products (pipes, ducts, cables etc.), can need special rules.
Prüfungen zum Brandverhalten von Bauprodukten - Thermische Beanspruchung durch einen einzelnen brennenden Gegenstand für Bauprodukte mit Ausnahme von Bodenbelägen
Dieses Dokument legt ein Prüfverfahren zur Bestimmung des Brandverhaltens von Bauprodukten bei thermischer Beanspruchung durch einen einzelnen brennenden Gegenstand (SBI, en: Single Burning Item), ausgenommen Bodenbeläge sowie Bauprodukte, die in der Delegierten Verordnung (EU) 2016/364 aufgeführt sind, fest. Die Berechnungsverfahren sind in Anhang A angegeben. Informationen zur Genauigkeit des Prüfverfahrens sind in Anhang B angegeben. Die Kalibrierverfahren sind in Anhang C und Anhang D angegeben, wobei Anhang C normativ ist.
ANMERKUNG Dieses Dokument wurde erstellt, um das Brandverhalten von im Wesentlichen ebenen Bauprodukten zu bestimmen. Die Behandlung von einigen Produktfamilien, wie Rohre, Lüftungsleitungen, Kabel usw. kann besondere Regeln erfordern.
Essais de réaction au feu des produits de construction Produits de construction à l'exclusion des revêtements de sol exposés à une sollicitation thermique provoquée par un objet isolé en feu
Le présent document définit une méthode d’essai de détermination de la performance de réaction au feu des produits de construction, à l’exception des revêtements de sol et des produits figurant dans le Règlement délégué (UE) 2016/364, exposés à la sollicitation thermique provoquée par un « Single Burning Item » (SBI) (Objet Isolé en Feu) (OIF). Les méthodes de calcul sont fournies à l’Annexe A. Des informations relatives à la précision de la méthode d’essai sont données à l’Annexe B. Les méthodes d’étalonnage figurent dans les Annexes C et D, l’Annexe C étant normative.
NOTE Le présent document a été élaboré pour déterminer la performance de réaction au feu de produits essentiellement plats. Le traitement de quelques familles de produits linéaires (tubes, conduits, câbles, etc.) peut nécessiter des règles particulières.
Preskusi odziva gradbenih proizvodov na ogenj - Gradbeni proizvodi razen talnih oblog, izpostavljeni toplotnemu delovanju enega samega gorečega predmeta (vključno z dopolnilom A1)
Ta dokument določa preskusno metodo za ugotavljanje odziva gradbenih proizvodov na ogenj, razen talnih oblog in izdelkov, ki so navedeni v Delegirani uredbi (EU) 2016/364, kadar so izpostavljeni toplotnemu delovanju enega samega gorečega predmeta (SBI). Računski postopki so navedeni v dodatku A. Informacije o natančnosti preskusne metode so navedene v dodatku B. Kalibracijski postopki so navedeni v dodatkih C in D, od katerih je C normativni dodatek.
OPOMBA: Ta dokument je bil oblikovan za določanje odziva na ogenj za izdelke, ki so v večji meri ploščati. Za obdelavo nekaterih družin izdelkov, npr. linearnih izdelkov (cevi, kanalov, kablov itd.) so morda potrebna posebna pravila.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Preskusi odziva gradbenih proizvodov na ogenj - Gradbeni proizvodi razen talnih
oblog, izpostavljeni toplotnemu delovanju enega samega gorečega predmeta
(vključno z dopolnilom A1)
Reaction to fire tests for building products - Building products excluding floorings
exposed to the thermal attack by a single burning item
Prüfungen zum Brandverhalten von Bauprodukten - Thermische Beanspruchung durch
einen einzelnen brennenden Gegenstand für Bauprodukte mit Ausnahme von
Bodenbelägen
Essais de réaction au feu des produits de construction Produits de construction à
l'exclusion des revêtements de sol exposés à une sollicitation thermique provoquée par
un objet isolé en feu
Ta slovenski standard je istoveten z: EN 13823:2020+A1:2022
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.01 Stavbni elementi na splošno Elements of buildings in
general
91.100.01 Gradbeni materiali na Construction materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 13823:2020+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 13.220.50; 91.060.01; 91.100.01 Supersedes EN 13823:2020
English Version
Reaction to fire tests for building products - Building
products excluding floorings exposed to the thermal attack
by a single burning item
Essais de réaction au feu des produits de construction - Prüfungen zum Brandverhalten von Bauprodukten -
Produits de construction à l'exclusion des revêtements Thermische Beanspruchung durch einen einzelnen
de sol exposés à une sollicitation thermique provoquée brennenden Gegenstand für Bauprodukte mit
par un objet isolé en feu Ausnahme von Bodenbelägen
This European Standard was approved by CEN on 17 February 2020 and includes Amendment 1 approved by CEN on 8 May
2022.
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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13823:2020+A1:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test facility . 8
4.1 General . 8
4.2 Test room . 8
4.3 Materials . 9
4.4 Test apparatus . 10
4.5 Smoke exhaust system . 12
4.6 General measurement section equipment . 12
4.7 Other general equipment . 13
5 Test specimen . 14
5.1 Dimensions of specimen . 14
5.2 Mounting of specimen . 15
5.3 Installation of the specimen wings in the trolley . 17
5.4 Number of specimens . 18
6 Conditioning . 18
7 Principle . 18
8 Test procedure . 19
8.1 General . 19
8.2 Testing operations . 19
8.3 Visual observation and manual recording of data . 20
8.4 Automated recording of data . 22
8.5 Early termination of test . 23
9 Expression of results . 23
10 Test report . 24
Annex A (normative) Calculation procedures . 25
A.1 General . 25
A.2 Synchronization of data . 26
A.3 Checking equipment response . 28
A.4 Exposure period . 29
A.5 Heat output . 29
A.6 Smoke production . 34
A.7 Calculations for calibrations – Propane heat release . 39
Annex B (informative) Precision of test method. 40
B.1 General remarks and results . 40
B.2 Calculation of test results . 41
B.3 Statistical analysis. 41
B.4 Statistical results . 42
Annex C (normative) Calibration procedures . 47
C.1 Procedures for separate pieces of equipment . 47
C.2 System response calibrations . 49
Annex D (informative) Calibration procedures . 59
D.1 Procedures for separate pieces of equipment . 59
D.2 Check of the thermal attack on the specimens . 61
Annex E (normative) Design drawings . 62
Annex F (informative) Data file format . 97
Annex G (informative) Record sheet .100
Bibliography .101
European foreword
This document (EN 13823:2020+A1:2022) has been prepared by Technical Committee
CEN/TC 127 “Fire safety in buildings”, the secretariat of which is held 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 2023, and conflicting national
standards shall be withdrawn at the latest by January 2023.
Attention is drawn to the possibility that some of the elements of this document may be the
subject of patent rights. CEN shall not be held responsible for identifying any or all such patent
rights.
This document includes Amendment 1 approved by CEN on 8 May 2022.
This document supersedes !EN 13823:2020".
The start and finish of text introduced or altered by amendment is indicated in the text by tags
!".
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards
body. A complete listing of these bodies can be found on the CEN website.
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,
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 the United Kingdom.
Introduction
The classification of the reaction to fire performance of construction products established by
Delegated Regulation (EU) 2016/364 defines the reaction to fire classes for building products
excluding floorings. The relevant test methods for determining the reaction to fire are being
prepared by CEN/TC 127.
Safety warning
The attention of all persons concerned with managing and carrying out the tests described in this
document is drawn to the fact that fire testing can be hazardous and that toxic and/or harmful
smoke and gases can be produced during the test.
An assessment of all potential hazards and risks to health should be made and safety precautions
should be identified and provided. Smoke and gases should be removed from the workplace.
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.
Special precautions are required for the propane gas supply system.
— The equipment, for example tubes, couplings, flow meters, should be approved for propane.
— The burner should be equipped with a remote-controlled ignition device, for example a pilot
flame or a glow wire. There should be a warning system for leaking gas and a valve for
immediate and automatic cut-off of the gas supply in case of extinction of the ignition flame.
The pilot flames can be ignited directly by an operator in the test room, however, no one
should be present in the test room during ignition of a burner.
— It should be possible to operate the switch between auxiliary and main (primary) burner and
the preceding main valve (to open or stop the propane supply) from outside the test room.
Special precautions are required for the extinction of burning specimens.
When the extinction is carried out because of intensive combustion of the specimens, it is
recommended that a second operator is ready to intervene. Means for extinguishing should be
available (e.g. since the heat output during intensive combustion can damage the apparatus).
1 Scope
This document specifies a method of test for determining the reaction to fire performance of
construction products excluding floorings, and excluding products which are indicated in
Delegated Regulation (EU) 2016/364, when exposed to thermal attack by a single burning item
(SBI). The calculation procedures are given in Annex A. Information on the precision of the test
method is given in Annex B. The calibration procedures are given in Annexes C and D, of which
Annex C is a normative annex.
NOTE This document has been developed to determine the reaction to fire performance of essentially
flat products. The treatment of some families of products, e.g. linear products (pipes, ducts, cables etc.), can
need special rules.
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 13238, Reaction to fire tests for building products - Conditioning procedures and general rules
for selection of substrates
EN 13501-1:2018, Fire classification of construction products and building elements - Part 1:
Classification using data from reaction to fire tests
EN 60584-1:2013, Thermocouples — Part 1: EMF specifications and tolerances
EN ISO 13943:2017, Fire safety — Vocabulary (ISO 13943:2017)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 13943:2017 and
EN 13501-1:2018 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp/ui
3.1
backing board
calcium silicate panel used to back the specimen that can be placed directly against a free-
standing test specimen or at a distance from it
3.2
specimen
piece of a product, which is to be tested
Note 1 to entry: This can include the mounting technique used in its end-use application. This also can
include an air gap and/or a substrate where appropriate.
3.3
substrate
product which is used immediately beneath the product about which information is required
3.4
THR
600s
total heat release from the specimen in the first 600 s of exposure to the main (primary) burner
flames
3.5
LFS
lateral flame spread on the long specimen wing
Note 1 to entry: The LFS is defined in more detail in 8.3.3.
3.6
TSP
600s
total smoke production from the specimen in the first 600 s of exposure to the main (primary)
burner flames
3.7
FIGRA
0,2 MJ
fire growth rate index
maximum of the quotient of heat release rate from the specimen and the time of its occurrence
using a THR-threshold of 0,2 MJ
Note 1 to entry: The FIGRA0,2 MJ is described in more detail in A.5.3.
3.8
FIGRA
0,4 MJ
fire growth rate index
maximum of the quotient of heat release rate from the specimen and the time of its occurrence
using a THR threshold of 0,4 MJ
Note 1 to entry: The FIGRA is described in more detail in A.5.3.
0,4 MJ
3.9
SMOGRA
smoke growth rate index
maximum of the quotient of smoke production rate from the specimen and the time of its
occurrence
Note 1 to entry: The SMOGRA is described in more detail in A.6.3.
3.10
sustained flaming
persistence of flame on or over a surface for a minimum period of time
[SOURCE: EN ISO 13943:2017]
4 Test facility
4.1 General
The SBI test facility shall consist of a test room, the test apparatus (trolley, frame, burners, hood,
collector and ducting), the smoke exhaust system and general measuring equipment. These
components are specified in 4.2 to 4.7. Design drawings are given in Annex E. Dimensions given
in the drawings are nominal unless tolerances are given in the text.
The air supply to the test room entering below the trolley should be fresh, uncontaminated air.
4.2 Test room
4.2.1 The test room shall have an inner height of (2,4 ± 0,05) m and an inner floor area of
(3,0 ± 0,05) m in both directions. The walls shall be made of stone type building blocks (e.g.
cellular concrete), gypsum boards, calcium silicate boards or other boards classified as class A1
or A2.
4.2.2 One wall of the test room shall have an opening to insert the trolley from the surrounding
laboratory into the test room. The opening shall be at least 1 470 mm wide and 2 450 mm high
(dimensions of the frame). Windows shall be placed in the two walls facing the front side of the
two perpendicular specimen planes. To be able to handle the SBI apparatus and the specimen
when the trolley is in place, an additional door is needed.
4.2.3 With the trolley in place in the test room, the distance between the long wing specimen
surface touching the U-profile and the wall of the test room shall be (2,1 ± 0,05) m. This distance
shall be measured perpendicularly to the wall facing the long wing. The areas of the openings in
the test room, excluding the air inlet at the bottom of the trolley and the smoke exhaust opening
in the hood, shall not exceed a total of 0,05 m .
4.2.4 Both left-orientated arrangements, as shown in Figure 1, and right-orientated
arrangements (the trolley shown in Figure 1 mirrored around a vertical line) are allowed.
To be able to remove side plates of the hood without removing the collector, attention should be
paid to the connection between the frame of the SBI apparatus and the ceiling of the room. It
should be possible to move the side plate outwards at the bottom.
NOTE The relative position of the frame in the test room depends on the details of the connection
between room and frame.
Dimensions in metres
Key
1 visual observation
2 fixed frame
3 visual observation (left orientated specimen)
4 trolley (with left orientated specimen)
NOTE Both left orientated and right oriented specimens are acceptable. For right orientated
specimens the figure is mirrored around a vertical line.
Figure 1 — Top view of the SBI test room design (schematic drawing)
4.3 Materials
Commercial propane, of minimum purity 95 %.
4.4 Test apparatus
NOTE See Figures E.1 to E.35.
4.4.1 Trolley, on which two perpendicular specimen parts are placed, with a sandbox burner
at the bottom of the vertical corner.
The trolley is put in place with its back side closing the opening in the wall of the test room; the
air inlet under the floor of the trolley is provided with perforated plates (open area to total area
40 % to 60 %; perforation diameter 8 mm to 12 mm) to produce an evenly distributed flow along
the floor of the test room.
Using a spirit level placed in the gully, periodically check the level of the L profile (behind the
burner) and the C profile (in front of the specimen) to ensure they are horizontal. This will ensure
that any material which melts and flows from the specimen will remain in the gulley during the
test.
In addition, periodically measure the level of the platform in front of the burner to ensure this is
also horizontal.
4.4.2 Fixed frame, in which the trolley is pushed and which supports the hood; a second burner
is fixed to the frame.
4.4.3 Hood, on top of the frame, which collects the combustion gases.
4.4.4 Collector, on top of the hood with baffles and a horizontal outlet for the exhaust duct.
4.4.5 Exhaust duct, circular tube of inner diameter (315 ± 5) mm, and insulated with 50 mm
high temperature resistant mineral wool, with the following parts (in flow direction):
— connection to the collector;
— ducting, of length 500 mm with four thermocouple mountings (for optional temperature
measurements) at a distance of at least 400 mm from the collector (drawing E25 part A;
optional);
— ducting, of length 1 000 mm (drawing E25 part B; optional);
— two 90° bends, (radius of curvature of axis 400 mm) (drawing E25 part C and D; optional);
connection to the collector with an optional J-shaped bend;
— ducting, of length 1 625 mm with guide vanes and an orifice; guide vane length 630 mm
closest to the collector at a minimum distance of 50 mm; directly behind the guide vanes a
(2,0 ± 0,5) mm thick circular orifice with inner opening diameter 265 mm and an outer
diameter of 314 mm (drawing E25 part E; mandatory);
— ducting, of length 2 155 mm with mountings for pressure-probe, four thermocouples, gas-
sampling probe and white light extinction system; this section is called the “general
measurement section” (drawing E25 part F; mandatory);
— ducting, of length 500 mm (drawing E25 part G; mandatory);
— connection to exhaust.
Attention should be paid to the fixing of the measuring duct. The total mass excluding probes, etc.
is about 250 kg.
4.4.6 Two identical sandbox burners (see Figure E.9), one in the bottom plate of the trolley
(the “main (primary) burner”), one fixed to a post of the frame (the “auxiliary (secondary)
burner”), with the following specifications:
a) Shape: right angled triangle (top view) with two equal sides of 250 mm, height 80 mm,
bottom closed except for a 12,5 mm pipe socket at the gravitational centre, top open. A right-
angled triangular perforated plate shall be positioned in the burner at a height of 10 mm
above the bottom. Metal gauze with a maximum mesh size of 2 mm shall be positioned at
heights of 12 mm and 60 mm above the bottom. All dimensions shall be within ± 2 mm.
b) Material: box made of 1,5 mm stainless steel, filled from bottom to top with, successively, a
10 mm void, a layer of pebbles within a size distribution of 4 mm to 8 mm up to a height of
60 mm, and a top layer of sand within a size distribution of 2 mm to 4 mm up to a height of
80 mm. The metal gauze is used to stabilize the two layers and prevent the pebbles from
entering the gas pipe socket. The pebbles and sand used shall be rounded (river) stones, not
broken ones.
c) Position of main (primary) burner: mounted in the tray (see Figures E.9 and E.19) and
connected to the U-profile at the bottom of the specimen position. The top edge of the main
(primary) burner shall be (25 ± 2) mm above the top edge of the U-profile.
d) Position of auxiliary (secondary) burner: fixed to the post of the frame opposite to the
specimen corner, with the top of the burner at a height of (1 450 ± 5) mm from the floor of
the test room (1 000 mm vertical distance to the hood), its diagonal parallel and nearest to
the hypotenuse of the main (primary) burner.
e) The main (primary) burner is connected to U-profiles at the long and the short wing specimen
position (see Figure E.18, part 10). In both U-profiles a blanking plate (see Figure E.19) is
placed with its top at the same height as the top of the U-profile and at 0,3 m from the corner
line between the mounted specimen wings (at the border of the burner zone, see 8.3.4).
f) The main (primary) burner shall be protected with a tilted triangular grid when previous
tests on the same type of product have led to an early termination to the test due to fallen
material on the sand-bed in accordance with 8.5. The grid shall have a ratio of open area to
total area of at least 90 %. One side of the grid shall be placed on the hypotenuse of the burner.
The tilt angle is (45 ± 5)° with the horizontal, measured along the line from the hypotenuse
midpoint to the specimen corner. See Figure E.36.
4.4.7 Shield of rectangular shape, width (370 ± 5) mm, height (550 ± 5) mm, made of calcium
silicate board (specification the same as the backing boards), to protect the specimens from the
heat flux of the flames of the auxiliary (secondary) burner.
It shall be fixed to the hypotenuse side of the auxiliary (secondary) burner, centred in the
horizontal plane (shielding the total width of the diagonal plus (8 ± 3) mm at both sides) with the
top edge (470 ± 5) mm above the top level of the auxiliary (secondary) burner.
4.4.8 Mass flow controller with a range of at least 0 g/s to 2,3 g/s and an accuracy of 1 % of
the reading for the range 0,6 g/s to 2,3 g/s. The mass flow controller shall be calibrated annualy.
NOTE The propane flow of 2,3 g/s corresponds to a heat release of 107 kW using the effective lower
heat of combustion of propane (46 360 kJ/kg). The accuracy of 1 % is when either using air, nitrogen or
propane.
4.4.9 Switch, used to supply propane to either of the burners.
The switch shall prevent propane being supplied to both burners at the same time, except during
burner switching time (the short period of time in which the auxiliary (secondary) burner is
decreasing and the main (primary) burner is increasing in output). This burner switch response
time, !determined in the step calibration and" calculated in accordance with C.2.1, shall be
between 9 s and 12 s.
It shall be possible to operate the switch and the preceding main valve from outside the testing
room.
4.4.10 Backing boards, used to back the specimen wings in the trolley.
The backing boards shall be high density calcium silicate boards as defined in EN 13238 with a
thickness of (12 ± 3) mm. The dimensions of the backing boards shall be:
a) for the short wing: (at least 570 + thickness of the specimen) mm × (1 500 ± 5) mm;
b) for the long wing: (1 000 ± 5) mm × (1 500 ± 5) mm.
On the short wing, the backing board is wider than the specimen. The additional width shall
extend at one side only. !For specimens mounted with an air gap, the width of the backing
board for the long wing shall be increased by an amount equal to the size of the air gap."
4.4.11 Removable panel parts, to allow for additional airflow behind both specimen wings
panels 22 and 25 in Figure E.20 shall be replaced by half panels, covering only the upper half of
the space covered by panels 22 and 25.
The panel shall only be removed under the conditions given in 5.2.2, a).
4.5 Smoke exhaust system
4.5.1 Under test conditions, the smoke exhaust shall be capable of continuously extracting a
3 3
volume flow, normalized to 298 K, of 0,50 m /s to 0,65 m /s.
4.5.2 The exhaust duct shall have two side ducts (circular tubes of inner diameter 45 mm)
horizontally perpendicular to and at the height of the longitudinal axis of the exhaust duct (see
Figures E.32 and E.33).
4.5.3 The two possible configurations of the extraction duct are given in Figure E.1. The trolley
opening in the test room is at the topside in the configuration drawings. The orientation of the
duct may deviate from Figure E.1 if proof is provided that this does not change the airflow over
the specimen. Removal of the 180° bend in the extraction duct and replacement of the
hemispherical pressure probe are acceptable, provided that it is proved that the uncertainty in
flow measurement is equal or better.
NOTE Due to changes in heat output, some exhaust systems (especially those provided with local fans)
can need manual or automatic readjustment during tests, to meet the requirement given in 4.5.1.
The duct should be cleaned at intervals to avoid excessive accumulation of soot.
4.6 General measurement section equipment
NOTE See Figures E.28 to E.35.
4.6.1 Three thermocouples, all of the K-type in accordance with EN 60584-1:2013, diameter
in the range 0,5 mm to 1 mm, sheathed and insulated.
The position of the tips shall be at a radius of (87 ± 5) mm from the axis and with 120° mutual
angular distance.
4.6.2 Hemispherical probe, connected to a pressure transducer with a range of at least 0 Pa
to 100 Pa, and an accuracy of ± 2 Pa. !The opening of the sphere of the hemispherical probe
shall face the incoming flow." (See reference [4].)
The pressure transducer output shall have a 90 % response time of 1 s or better.
4.6.3 Gas sampling probe, connected to a gas conditioning unit and gas analysers for O and
CO .
a) The O analyser shall be of the paramagnetic type and capable of measuring at least a range
of 16 % to 21 % oxygen (V /V ). The response time of the analyser shall be not more than
O2 air
12 s (as measured in accordance with C.2.2). The noise and drift of the analyser shall be not
more than 100 ppm over a period of 30 min (both as measured in accordance with C.1.3).
The output from the analyser to the data acquisition system shall have a resolution of
maximum 100 ppm.
b) The CO2 analyser shall be of the IR type and capable of measuring at least a range of 0 % to
10 % carbon dioxide. The linearity of the analyser shall be 1 % of full scale or better. The
response time of the analyser shall be not more than 12 s (as measured in accordance with
C.2.2). The output from the analyser to the data acquisition system shall have a resolution of
maximum 100 ppm.
4.6.4 Light attenuation system, of the white light type, mounted with a flexible connection to
the side ducts of the exhaust duct, and consisting of the following:
a) Lamp, of the incandescent filament type and operating at a colour temperature of
(2 900 ± 100) K. The lamp shall be supplied with stabilized direct current, stable
within ± 0,5 % (including temperature, short-term and long-term stability).
b) Lens system, to align the light to a parallel beam with a diameter of at least 20 mm. The
photocell aperture shall be placed at the focus of the lens in front of it and it shall have a
diameter, d, chosen with regard to the focal length of the lens, f, so that d/f is less than 0,04.
c) Detector, with a spectrally distributed responsivity agreeing with the CIE, V(γ)-function (the
CIE photopic curves) to an accuracy of at least ± 5 %. The detector output shall, over an
output range of at least two decades, be linear within 3 % of the measured transmission value
or 1 % of the absolute transmission.
For the calibration of the light attenuation system, see C.1.5. The 90 % response time of the
system shall be not more than 3 s.
To prevent smoke being trapped in the side ducts and the deposition of soot on the optics, air
shall be introduced into the side ducts either by self-suction or pressurized airflow. If pressurized
airflow is used, the flow rate shall be no more than 5 l/min.
4.7 Other general equipment
4.7.1 Thermocouple, of the K-type in accordance with EN 60584-1:2013, diameter (2 ± 1) mm,
installed on the outer wall of the testing room within 0,20 m of the trolley opening and less than
0,20 m above the floor, for measuring the ambient temperature of the air flow into the test room.
4.7.2 Equipment for measuring the ambient pressure, having an accuracy of ± 200 Pa (2
mbar).
4.7.3 Equipment for measuring the relative ambient air humidity, having an accuracy
of ± 5 % within the range 20 % to 80 %.
4.7.4 Data acquisition system (used to record the data automatically) having an accuracy
equal to or better than 100 ppm (0,01 %) for O and CO , 0,5 °C for the temperature
2 2
measurements, 0,01 % of full scale instrument output for all other instruments and 0,1 s for time.
The data acquisition system shall record and store the following quantities every 3 s (information
on a data file format is given in Annex F):
a) time, in seconds;
b) mass flow of propane gas through the burner, in milligrams per second;
c) pressure difference from the hemispherical probe, in pascals;
d) relative light intensity, dimensionless;
e) O concentration, in (V /V ) %;
2 O2 air
f) CO concentration, in (V /V ) %;
2 CO2 air
g) ambient temperature at air inlet at bottom of trolley, in kelvins;
h) three temperatures in general measurement section, in kelvins.
5 Test specimen
5.1 Dimensions of specimen
5.1.1 The corner specimen consists of two wings, designated the short and long wings. The
maximum thickness of a specimen is 200 mm.
Sheet products shall have the following dimensions:
a) short wing: (495 ± 5) mm × (1 500 ± 5) mm;
b) long wing: (1 000 ± 5) mm × (1 500 ± 5) mm.
NOTE If additional products are used to construct the specimen (in accordance with 5.3.2), the given
dimensions refer to the total specimen dimensions.
5.1.2 Specimens with a thickness of more than 200 mm shall be reduced to a thickness of
200 mm by cutting away the unexposed surface, unless otherwise specified in the product
−10
specification.
5.1.3 Two horizontal lines shall be drawn on the front side of the long wing near the edge of the
specimen farthest from the corner, to allow for observation of lateral flame spread reaching the
edge between a height of (500 ± 3) mm and (1 000 ± 3) mm above the bottom edge of the
specimen. Each line width shall be a maximum of 3 mm.
5.2 Mounting of specimen
5.2.1 Mounting as in end use application
When products are tested, mounted as in their end use application, the test results are valid only
for that application.
5.2.2 Standard mounting
When products are tested using a standard mounting, the test results are valid for that end use
application and can be valid for a wider range of end use applications. The standard mounting
used and its range of validity shall be in accordance with the relevant product specifications, and
the following:
a) Boards that are free standing in their end use application shall be tested free standing at a
distance of at least 80 mm from the backing board. Boards that have in the end use
application a ventilated cavity behind it shall be tested with a cavity of at least 40 mm width
as well as with the smallest possible cavity width in the end-use application. For these two
types of boards the sides of the cavity farthest away from the corner shall be open, the panels
in accordance with 4.4.11 shall be removed and the cavities behind both specimen wings
shall be in open connection. For other types of boards the sides of the cavity farthest away
from the corner shall be closed, the panels in accordance with 4.4.11 shall be in place and the
cavities behind both specimen wings shall not be in open connection.
b) Boards that are fixed mechanically to a substrate in the end use application shall be tested
fixed to a substrate using appropriate fixings. Fixings that stick out of the specimen surface
shall be placed in such a way that the specimen wing can be placed against the U-profile at
the bottom and against the other specimen wing at its side, over its full length.
c) Boards that in their end use application are fixed mechanically to a substrate with a cavity
behind it shall be tested with a cavity between substrate and backing board. The distance
between the substrate and the backing board shall be at least 40 mm.
d) Products that in their end use application are glued to a substrate shall be tested glued to a
substrate.
e) Products tested with a horizontal joint shall be tested with a horizontal joint in the long wing
at a height of 500 mm from the bottom edge of the specimen. Products tested with a vertical
joint shall be tested with a vertical joint in the long wing at a distance of 200 mm from the
corner line, measured when the wings are mounted ready for testing. The centre line of the
joint is decisive.
NOTE 1 The bottom edge of the specimen is not visible when the specimen is installed in the trolley. The
height is measured from the bottom edge of the specimen, not from the top of the U-profile of the trolley.
f) Multi-layered products with air channels shall be tested with vertical channels.
g) Standard substrates shall meet the requirements of EN 13238. The dimensions of the
substrates shall be in accordance with the dimensions of the specimens (see 5.1.1):
1) for the short wing, the substrate shall be the length of the small wing plus the specimen
and substrate thickness;
2) the substrate for the long wing shall be identical to the lateral and vertical dimensions of
the specimen.
h) Non-flat products shall be tested in such a way that not more than 30 % of a representative
area of 250 mm by 250 mm of the exposed surface area is more than 10 mm behind the
vertical plane through the rear side of the U-profile. Non-flat products may be reshaped
and/or may partly extend over the U-profile to the side of the burner to fulfil this
requirement. A product shall not extend over the burner (i.e. maximum extension over the
U-profile is 40 mm).
i) If a product is not normally produced in a size large enough to provide one single test
specimen for each specimen side, a special specimen shall be prepared as follows:
Installation of full size products should be started at the bottom of the corner joint between
both wings. The specimen shall then be constructed from full size pieces of the product
radiating outwards from this bottom corner so that the cut pieces are located at the edges of
the specimen walls.
Where the horizontal and/or vertical joint, in accordance with 5.2.2, e), is present in the test
specimen, the positioning of the joints shall always prevail. The area of the parts of the long
wing formed as a consequence of the horizontal and/or vertical joints shall be filled with full
size products starting at the bottom corner, and again, with full size pieces, at the corner
between the horizontal and vertical joints.
Products are mounted for testing against the rear side of the U-profile (see 5.3.1). A mounted,
totally flat product is therefore positioned in the vertical plane against the rear of the U-profile.
Since the position of the surface influences the heat received from the burner flames, the major
parts of a non-flat product should not be far behind the vertical plane through the rear side of the
U-profile.
NOTE 2 Figure 2 is an example of an arrangement of the specimen and backing board.
Key
1 backing boards
2 L-profile
3 air gap
4 joints
5 specimen wings
6 burner
7 U-profiles
Figure 2 — Example of corner configuration
5.3 Installation of the specimen wings in the trolley
5.3.1 The specimen wings shall be placed in the trolley as follows:
a) The short wing specimen and backing board are placed on the trolley, with the extending part
of the backing board at the main (primary) burner side and the bottom edge of the specimen
against the short U-profile on the trolley floor.
b) The long wing specimen and backing board are placed on the trolley, with the side edge of
the backing board against the extending backing board of the short wing and the bottom edge
of the specimen against the long U-profile on the trolley floor.
c) Both wings shall be clamped at the top and the bottom.
d) To ensure that the corner joint within the backing boards does not widen during the test, a
metallic L-profile, length 1 500 mm, shall be placed against the reverse side edge of the
corner formed between the two wings. Connect the L-profile to the backing boards using
fixings at a maximum of 250 mm centres.
5.3.2 The exposed edges of the products and the joint in the corner may be protected using
additional products, if this is in accordance with its end use application. When additional products
are used, the width of the wings including the additional product shall be in accordance with 5.1.1.
5.3.3 After installation of the specimen on the trolley, the following aspects shall be
photographed:
a) A total view of the exposed surface of the long wing. The centre point of the long wing shall
be in the centre of the view. The camera shall be directed perpendicular to the surface of the
long wing.
b) A close-up of the vertical outer edge of the long wing at a height of 500 mm above the floor
of the trolley. The camera angle shall be horizontal and at about 45° to the vertical plane of
the wing.
c) If additional products (in accordance with 5.3.2) are used a close-up of the edges and/or
joints where the products are applied.
5.4 Number of specimens
At least three specimens (three sets of long plus short wing) shall be tested in accordance with
Clause 8.
If the product being tested has an orientational effect and this document or the product standard
does not specify the orientation which has to be tested, the one specimen of the product shall be
tested once in both directions. The test shall then be completed by test on the configuration with
the worst classification parameters a further two times. This is only valid if one orientation has
worse results for all classification parameters (FIGRA , FIGRA , THR , SMOGRA, TSP ,
...
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