SIST EN 1021-2:2014

SLOVENSKI STANDARD
oSIST prEN 1021-2:2013
01-februar-2013
Pohištvo - Ocenjevanje 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 - Evaluation de l'allumabilité des meubles rembourrés - Partie 2: Source
d'allumage flamme équivalente à une allumette
Ta slovenski standard je istoveten z: prEN 1021-2 rev
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
oSIST prEN 1021-2:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1021-2:2013


EUROPEAN STANDARD
DRAFT
prEN 1021-2 rev
NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2012
ICS 97.140; 13.220.40 Will supersede EN 1021-2:2006
English Version
Furniture - Assessment of the ignitability of upholstered furniture
- Part 2: Ignition source match flame equivalent
Ameublement - Evaluation 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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 207.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1021-2 rev:2012: E
worldwide for CEN national Members.

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Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Terms and definitions .5
3 Criteria of ignition .6
3.1 Progressive smouldering ignition .6
3.2 Flaming ignition .6
4 Principle .6
5 Health and safety of operators .7
5.1 General .7
5.2 Enclosure .7
5.3 Extinguishers .7
6 Apparatus .7
6.1 Test rig .7
6.2 Test enclosure . 10
6.3 Clock . 10
6.4 Ignition source: gas flame ignition source 1, which is a match-flame equivalent . 10
6.5 Gas flow control . 10
7 Preparation and conditioning . 11
7.1 Preparation . 11
7.2 Conditioning . 11
7.3 Atmosphere for testing . 11
8 Test assembly . 11
8.1 General . 11
8.2 Cover materials . 11
8.3 Upholstery filling. 12
9 Ignition source application . 12
9.1 Preparation . 12
9.2 Ignition source application . 15
9.3 Final examination. 15
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 soaking procedure . 21
D.1 Reagents . 21
D.1.1 Water . 21
D.1.2 Wetting agent . 21
D.2 Apparatus . 21
D.3 Specimens . 21
D.4 Procedure . 22

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Foreword
This document (prEN 1021-2:2012) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the
secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1021-2:2006.
The main change with respect to the previous edition is listed below:
a) the standard has been aligned with EN 1021-1;
b) a tolerance has been added to the temperature of the gas flame.
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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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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.
The standard contains four annexes:
Annex A (informative) Guidance notes for designers and specifiers
Annex B (informative) Model report form
Annex C (informative) Cleaning of a rig
Annex D (normative) Water soaking procedure
2 Terms and definitions
For the purposes of this document, 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
outer cover
outer layer of the upholstery
2.4
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 1 to entry: The term “interliner” is no longer used because it is non-specific and has been applied to different
components within the composite.
2.5
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
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3 Criteria of ignition
3.1 Progressive smouldering ignition
For the purposes of this 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;
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 application of the ignition source;
e) any test assembly that, on final examination (see 9.3) shows evidence of progressive 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 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).
NOTE Test specimens prepared from materials taken from furniture that has been used may give different results to
the same materials before use.
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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 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 size should be
2 2
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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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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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 regulator providing
1)
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.
A calibrated flow meter shall supply butane gas at a flow rate of (45 ± 2) ml/min at (25 ± 3) °C. 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.
NOTE 3 This corresponds to a flame height of approximately 35 mm.
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 a constant temperature such that the
gas temperature at entry to the flow meter is (25 ± 3)°C, so that flow corrections for temperature variations can
be avoided.

3 2
1) 1kPa = 10 N/m = 10 mbar
10

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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 wh
...