SIST EN 1021-2:2006
(Main)Furniture - Assessment of the ignitability of upholstered furniture - Part 2: Ignition source match flame equivalent
Furniture - Assessment of the ignitability of upholstered furniture - Part 2: Ignition source match flame equivalent
This European Standard specifies a test method to assess the ignitability of material combinations, such as covers and fillings used in upholstered seating, when subjected to a small flame as an ignition source.
The test measures only the ignitability of a combination of materials used in upholstered seating and not the ignitability of a particular finished item of furniture incorporating these materials. They give an indication of, but cannot guarantee, the ignition behaviour of the finished item of furniture.
NOTE Test specimens prepared from materials taken from furniture that has been used may give different results to the same materials before use.
Möbel - Bewertung der Entzündbarkeit von Polstermöbeln - Teil 2: Eine einem Streichholz vergleichbare Gasflamme als Zündquelle
Diese Europäische Norm beschreibt ein Prüfverfahren zur Bestimmung der Entzündbarkeit von Werkstoffkombinationen wie Bezüge und Füllmaterial für gepolsterte Sitzmöbel, wenn diese einer kleinen Flamme als Zündquelle ausgesetzt sind.
Anhand der Prüfungen wird lediglich die Entzündbarkeit einer Kombination von Werkstoffen bestimmt, die zur Herstellung von Polstermöbeln verwendet wird, nicht aber die Entzündbarkeit eines bestimmten fertigen Möbelstücks, das unter anderem aus diesen Werkstoffen besteht. Diese Prüfungen geben einen Anhaltspunkt, jedoch keine Garantie für das Entzündungsverhalten des fertigen Möbelstücks.
Ameublement - Évaluation de l'allumabilité des meubles rembourrés - Partie 2: Source d'allumage : flamme équivalente a celle d'une allumette
La présente Norme européenne spécifie une méthode d’essai permettant d’évaluer l’allumabilité de combinaisons de matériaux, comme les revetements et les rembourrages utilisés dans les sieges rembourrés, lorsque la source d’allumage a laquelle ils sont exposés est une petite flamme.
Cet essai mesure uniquement l’allumabilité d’une combinaison de matériaux utilisés dans les sieges rembourrés et non l’allumabilité d’un article d’ameublement fini particulier qui incorpore ces matériaux. Ils donnent une indication mais ne peuvent garantir le comportement de l’article d’ameublement fini a l’allumage.
NOTE Les éprouvettes préparées a partir de matériaux prélevés sur des meubles ayant déja servi sont susceptibles de donner des résultats différents de ceux obtenus sur ces memes matériaux avant leur utilisation.
Pohištvo - Ugotavljanje vžigljivosti oblazinjenega pohištva - 2. del: Vir vžiga: enakovreden plamenu vžigalice
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1021-2:2006
01-marec-2006
1DGRPHãþD
SIST EN 1021-2:1995
Pohištvo - Ugotavljanje vžigljivosti oblazinjenega pohištva - 2. del: Vir vžiga:
enakovreden plamenu vžigalice
Furniture - Assessment of the ignitability of upholstered furniture - Part 2: Ignition source
match flame equivalent
Möbel - Bewertung der Entzündbarkeit von Polstermöbeln - Teil 2: Eine einem
Streichholz vergleichbare Gasflamme als Zündquelle
Ameublement - Évaluation de l'allumabilité des meubles rembourrés - Partie 2: Source
d'allumage : flamme équivalente a celle d'une allumette
Ta slovenski standard je istoveten z: EN 1021-2:2006
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
97.140 Pohištvo Furniture
SIST EN 1021-2:2006 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 1021-2:2006
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SIST EN 1021-2:2006
EUROPEAN STANDARD
EN 1021-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2006
ICS 13.220.40; 97.140 Supersedes EN 1021-2:1993
English Version
Furniture - Assessment of the ignitability of upholstered furniture
- Part 2: Ignition source match flame equivalent
Ameublement - Évaluation de l'allumabilité des meubles Möbel - Bewertung der Entzündbarkeit von Polstermöbeln -
rembourrés - Partie 2: Source d'allumage flamme Teil 2: Eine einem Streichholz vergleichbare Gasflamme
équivalente à une allumette als Zündquelle
This European Standard was approved by CEN on 16 December 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1021-2:2006: E
worldwide for CEN national Members.
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EN 1021-2:2006 (E)
Contents Page
Foreword. 3
Introduction . 4
1 Scope . 5
2 Terms and definitions . 5
3 Criteria of ignition. 5
4 Principle . 6
5 Health and safety of operators . 6
6 Apparatus. 7
7 Preparation and conditioning. 11
8 Test assembly. 11
9 Ignition source application . 12
10 Test report. 15
Annex A (informative) Guidance notes for designers and specifiers . 17
Annex B (informative) Model report form. 19
Annex C (informative) Cleaning of a rig . 20
Annex D (normative) Water soak procedures . 21
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EN 1021-2:2006 (E)
Foreword
This European Standard (EN 1021-2:2006) has been prepared by Technical Committee
CEN/TC 207 “Furniture”, the secretariat of which is held by UNI.
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 August 2006, and conflicting national standards
shall be withdrawn at the latest by August 2006.
This European Standard supersedes EN 1021-2:1993.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement 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, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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EN 1021-2:2006 (E)
Introduction
This European Standard is one of a series of standards concerned with the ignitability of upholstered
furniture using various ignition sources. The ignition source used in this European Standard is a gas
flame equivalent to a match flame.
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EN 1021-2:2006 (E)
1 Scope
This European Standard specifies a test method to assess the ignitability of material combinations,
such as covers and fillings used in upholstered seating, when subjected to a small flame as an
ignition source.
The test measures only the ignitability of a combination of materials used in upholstered seating and
not the ignitability of a particular finished item of furniture incorporating these materials. They give
an indication of, but cannot guarantee, the ignition behaviour of the finished item of furniture.
NOTE Test specimens prepared from materials taken from furniture that has been used may give different
results to the same materials before use.
2 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
2.1
progressive smouldering
exothermic oxidation, not accompanied by flaming, that is self-propagating, i.e. independent of the
ignition source. It may or may not be accompanied by incandescence
2.2
flaming
undergoing combustion in the gaseous phase with the emission of light
2.3 Cover
2.3.1
outer cover
outer layer of the upholstery
2.3.2
inner cover
thin layer of material used between the outer cover and the upholstery filling. Any inner cover greater
than nominally 2 mm thick is part of the filling for test purposes
NOTE The term “interliner” is no longer used because it is non-specific and has been applied to different
components within the composite.
2.4
filling
main upholstery material contained by the outer cover and (if used) the inner cover. It may consist of
several different materials including any inner cover nominally greater than 2 mm thick
3 Criteria of ignition
3.1 Progressive smouldering ignition
For the purposes of European Standard, all the following types of behaviour are considered to be
progressive smouldering ignitions:
a) any test assembly that displays escalating combustion behaviour so that it is unsafe to continue
and test and active extinction is necessary;
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b) any test assembly that smoulders until it is largely consumed within the test duration;
c) any test assembly that smoulders to the extremities of the specimen, viz. upper or lower margins,
either side or to its full thickness, within the duration of the test;
d) any test assembly that smoulders after one hour from the beginning of the test;
e) any test assembly that, on final examination (see 9.3) shows evidence of active smouldering.
NOTE In practice it has been found that there is usually a clear distinction between materials which may
char under the influence of the ignition source but which do not propagate further (non-progressive combustion)
and those where smouldering develops in extent and spreads (progressive combustion).
3.2 Flaming ignition
For the purposes of this European Standard, all the following types of behaviour are considered to
be flaming ignitions:
a) any test assembly that displays escalating combustion behaviour so that it is unsafe to continue
the test and active extinction is necessary;
b) any test assembly that burns until it is essentially consumed within the test duration;
c) any test assembly on which any flame front reaches the lower margin, either side or passes
through its full thickness within the duration of the test;
d) any flaming which continues for more than 120 s after removal of the burner tube.
4 Principle
To subject an assembly of upholstery materials to a gas flame ignition source. The assembly is
arranged to represent in stylised form a junction between a seat and back (or seat and arm) such as
might occur in a typical chair. The ignitability of an assembly is determined by applying smokers
materials such as a gas flame equivalent to a burning match. The test method measures the
ignitability of the overall composite of materials, i.e. outer cover, inner cover, filling etc., as
constructed on the test rig. The results shall not be stated as being applicable to the general
behaviour of any individual component (see also Annex A).
5 Health and safety of operators
5.1 General
The test method specified in this European Standard presents a considerable hazard; suitable
precautions shall be taken.
5.2 Enclosure
For safety, the test should be conducted in a non-combustible fume cupboard. If such a cupboard is
not available, a test enclosure should be constructed (see 6.2) so that the operator is protected from
the fumes.
5.3 Extinguishers
Adequate means of extinguishing the assembly should be provided, bearing in mind that some
combinations may produce severe flaming during the test. A hand and/or fixed water spray which
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EN 1021-2:2006 (E)
can be directed over the burning area can be useful. Other means such as suitable fire extinguishers,
fire blankets and a bucket of water will assist.
In some cases smouldering may be difficult to extinguish completely and complete immersion in
water may be necessary.
6 Apparatus
6.1 Test rig
A suitable test rig is illustrated in Figures 1 and 2. It shall consist of two rectangular frames hinged
together and capable of being locked at right angles to each other.
The sides and hinge edges of the frames shall be made from nominal 25 mm x 3 mm flat steel bar
and shall securely hold mesh steel platforms set (6 ± 1) mm below the top edge of the frames (mesh
2 2
size should be such that an open mesh area of approximately 15 mm to 150 mm exists).
The upper edge of the vertical frame and the front edge of the horizontal frame shall be steel end
plates 450 mm x 65 mm x 3 mm to prevent the test filling moving during the assembly of the test
specimen (see Figures 1 and 2).
The internal width and height of the back frame shall be (450 ± 2) mm x (300 ± 2) mm and the width
and depth of the base frame (450 ± 2) mm x (150 ± 2) mm. A standard edging section may be used
around the mesh steel platform to give protection and greater rigidity.
The sides of the frame shall extend beyond the back of each frame to provide for the hinge holes
and to form the back legs. The hinge rod shall be of nominal 10 mm diameter steel, continuous
across the back of the rig and its axis (22,5 ± 0,5) mm beyond the back member of each frame.
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EN 1021-2:2006 (E)
Key
a) test rig
b) test rig with cover and fillings
c) vertical section
X detail of fitting cover to frame
1 filling
2 end plate of frame
3 cover
4 overlap 20 mm
5 clips
6 fold cover overlap under frame to touch the steel mesh supporting the filling and fasten with
clips as below
Figure 1 — Test rig assembly
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EN 1021-2:2006 (E)
Dimensions in millimetres
NOTE 1 Unless tolerances are indicated, dimensions are nominal
NOTE 2 All parts are made of steel
Key
1 end plate of frame 65 mm x 3 mm
2 edging section
3 expanded metal mesh size 28 mm x 6 mm (see 6.1)
4 side member of frame 25 x 3 mm
5 M10 bolt, nut and washers
6 Ø 10 hinge rod
Figure 2 — Test rig detail
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The frames shall be lockable at right angles by a bolt or pin through each of the pairs of members
forming the back legs. The front legs may be welded across the front corners of the base frame. The
height of the legs shall be such as to leave a gap not less than 50 mm high between the base and
frame and the supporting surface.
For the tests, the rigs shall be sited within the enclosure (see 6.2) and the testing shall be performed
in a basically draught-free environment permitting an adequate supply of air and removal of smoke
from the area of the apparatus.
6.2 Test enclosure
3
The test enclosure shall consist of either a room with a volume greater than 20 m (which contains
adequate oxygen for testing) or a smaller enclosure with a through flow of air. Inlet and extraction
systems providing an air flow rate of less than 0,2 m/s in the locality of the rig provide adequate
oxygen without disturbing the burning behaviour.
6.3 Clock
The clock shall be capable of measuring for a period of at least 1 h with an accuracy of 1 s.
6.4 Ignition source: gas flame ignition source 1, which is a match-flame equivalent
NOTE 1 This source has been designed to give a calorific output approximating to that of a burning match. It
is envisaged that larger flaming ignition sources will be covered by further parts of the standard.
A burner tube consisting of a length of stainless steel tube [(8 ± 0,1) mm outside diameter,
(6,5 ± 0,1) mm internal diameter and (200 ± 5) mm in length] is connected by flexible tubing to a
cylinder containing butane via a flowmeter, fine control valve, on-off valve (optional) and cylinder
1)
regulator providing outlet pressure of nominal 2,8 kPa ).
NOTE 2 Where tubing of these dimensions is not readily available, stainless steel tubing of approximately
similar dimensions may be used provided that the 50 mm length at the ‘flame’ end of the tube is machined to the
given size. To facilitate positioning the tube, a suitable handle may be fitted to it at least 100 mm from the flame
end of the burner tube.
The flow meter shall be calibrated to supply a butane gas flow rate at 25 °C of (45 ± 2) ml/min. The
flexible tubing connecting the output of the flowmeter to the burner tube shall be 2,5 m to 3 m in
length with an internal diameter of (7 ± 1) mm.
This corresponds to a flame height of approximately 35 mm at 25 °C.
6.5 Gas flow control
It is essential that the rate of supply of gas to the burner tube conforms to the flow rate specified.
Some difficulties have been reported with the supply and measurement of the gas, particularly where
the gas cylinder has, of necessity, to be stored in an environment cooler than the defined test
conditions and/or at some distance from the test rig.
In these cases, and other situations where difficulties occur, it is important that there should be
sufficient length of tubing inside the controlled environment (10 °C to 30 °C) to ensure that the gas
equilibrates to the required temperature before flow measurement. One way to assist this is to pass
the gas (before flow measurement) through a metal tube immersed in water maintained at 25 °C so
that flow corrections for temperature variations can be avoided.
3 2
1) 1kPa = 10 N/m = 10 mbar
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Great care also needs to be exercised with the measurement and setting of the flow rate of the gas.
Direct reading flowmeters, even those obtained with a direct gas calibration, need to be checked
when initially installed and also at regular intervals during testing by a method capable of accurately
measuring the absolute gas flow at the burner tube. One way of doing this is to connect the burner
tube with a short length of tubing (about 7 mm inside diameter) to a soap bubble flowmeter, such that
the upward passage of a soap film meniscus in a glass tube of calibrated volume (e.g. a burette)
over a known period of time gives an absolute measurement of the flow.
7 Preparation and conditioning
7.1 Preparation
All outer covers and inner covers that have been chemically treated to reduce their ignitability shall
be subjected to the water soaking and drying procedure described in Annex D prior to being
conditioned according to 7.2 This requirement applies to all methods of treatment, including back
coating, which are applied to covers that are finished in all other respects. It does not apply when the
cover material is manufactured from materials that are formulated to be, or are inherently, flame
retardant (e.g. fabric woven from flame retardant yarns, PVC) provided it is not further treated as a
finished cover material.
Where it is not known whether the material has been so treated or not, the water soaking and drying
procedure shall be carried out.
7.2 Conditioning
The materials to be tested shall be conditioned for at least 24 h immediately before the tests in the
following atmosphere;
temperature: (23 ± 2) °C;
relative humidity: (50 ± 5) %.
7.3 Atmosphere for testing
The test shall be carried out in an atmosphere having a temperature between 10 °C and 30 °C and a
relative humidity between 15 % and 80 %.
8 Test assembly
8.1 General
The test assembly materials shall be representative samples of the cover, inner cover, filling and
other components, which may be used in a real assembly.
NOTE The test assemblies may be made up with identical materials in the horizontal and vertical sections.
8.2 Cover materials
The outer cover (2.3.1) size needed for each test shall be
+10 +10
800 mm × 650 mm
0 0
NOTE The cover
...
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