Aerospace series - Burning behaviour of non-metallic materials under the influence of radiating heat and flames - Determination of smoke density and gas components in the smoke of materials - Test equipment apparatus and media

This standard defines the test equipment, apparatus and media required for determination of the smoke density according to EN 2825 and the concentration of the gas components in the smoke according to EN 2826 due to pyrolitic decomposition of solid materials and composite materials of up to 25 mm in thickness under the influence of radiant heat only or with simultaneous flame application.
This test method applies exclusively to materials whose specific standard requires this type of test. It cannot be substituted for the statutory tests required for a final specific use of the material concerned.
NOTE   The smoke gas density and the gas components in the smoke are determined according to the specific environmental and test conditions defined in this standard, in EN 2825 and EN 2826. No studies have been made up to now to determine whether the results can be transferred to differing conditions, particularly to actual fire conditions. The inhalatory toxical risk and irritancy affect cannot be assessed by merely measuring the concentration of individual gas components in the smoke.

Luft- und Raumfahrt - Brandverhalten nicht metallischer Werkstoffe unter Einwirkung von strahlender Wärme und Flammen - Bestimmung der Rauchdichte und der Rauchgaskomponenten von Werkstoffen - Prüfeinrichtung Prüfgeräte und Prüfmittel

Série aérospatiale - Comportement au feu des matériaux non-métalliques sous l'action de chaleur rayonnante et de flammes - Détermination de la densité de fumée et des composants des gaz de fumée des matériaux - Équipement, appareils et moyens d'essai

Cette Norme européenne définit les équipements, les appareils et les moyens d’essai requis pour déterminer la densité de fumée selon l’EN 2825 et la concentration des composants des gaz de fumée selon l’EN 2826 due à la décomposition pyrolytique des matériaux solides et des matériaux composites jusqu’à une épaisseur de 25 mm sous l’action de la chaleur rayonnante uniquement ou avec application simultanée de flamme.
La présente méthode d’essai s’applique exclusivement aux matériaux dont la norme spécifique exige ce type d’essais. Elle ne peut être remplacée par des essais réglementaires exigés pour une utilisation spécifique finale du matériau concerné.
NOTE   La densité des gaz de fumée et des composants de gaz de fumée sont déterminés selon les conditions d’environnement et d’essai spécifiques définis dans la présente norme, dans l’EN 2825 et l’EN 2826. Aucune étude n’a été menée jusqu’à présent pour déterminer si les résultats peuvent être transposés à des conditions différentes, en particulier aux conditions de feu réelles. Le risque toxique d’inhalation et l’effet d’irritation ne peuvent être évalués par le simple fait de mesurer la concentration des composants de gaz de fumée individuels.

Aeronavtika - Gorljivost nekovinskih materialov pod vplivom sevalne toplote in plamena - Določevanje gostote dima in plinskih komponent materialov - Naprave in sredstva za preskušanje

Ta standard opredeljuje preskusno opremo, naprave in sredstva, ki so potrebni za ugotavljanje gostote dima v skladu z EN 2825 in koncentracije plinskih komponent v dimu v skladu z EN 2826 zaradi pirolitske razgradnje trdnih materialov in kompozitnih materialov debeline do 25 mm samo pod vplivom žarčenja toplote ali s hkratno uporabo ognja.
Ta preskusna metoda velja izključno za materiale, pri katerih specifični standardi zahtevajo uporabo tovrstnega preskusa. Ne morejo ga nadomestiti zakonsko določeni preskusi, potrebni za končno konkretno uporabo zadevnega materiala.
OPOMBA:   Gostota plina v dimu in plinske komponente v dimu se določajo v skladu s specifičnimi okoljskimi in preskusnimi pogoji, opredeljenimi v tem standardu, v EN 2825 in EN 2826. Do zdaj še niso bile opravljene raziskave, s katerimi bi določili, ali se rezultati lahko prenesejo v drugačne razmere, predvsem v dejanske požarne razmere. Toksičnega tveganja ob vdihavanju in učinka razdraženosti ni mogoče oceniti le z merjenjem koncentracije posameznih plinskih komponent v dimu.

General Information

Status
Published
Publication Date
22-Nov-2011
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Nov-2011
Due Date
16-Jan-2012
Completion Date
23-Nov-2011

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SLOVENSKI STANDARD
SIST EN 2824:2012
01-januar-2012
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Aerospace series - Burning behaviour of non-metallic materials under the influence of

radiating heat and flames - Determination of smoke density and gas components in the

smoke of materials - Test equipment apparatus and media

Luft- und Raumfahrt - Brandverhalten nicht metallischer Werkstoffe unter Einwirkung von

strahlender Wärme und Flammen - Bestimmung der Rauchdichte und der
Rauchgaskomponenten von Werkstoffen - Prüfeinrichtung Prüfgeräte und Prüfmittel

Série aérospatiale - Comportement au feu des matériaux non-métalliques sous l'action

de chaleur rayonnante et de flammes - Détermination de la densité de fumée et des

composants des gaz de fumée des matériaux - Équipement, appareils et moyens d'essai

Ta slovenski standard je istoveten z: EN 2824:2011
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
49.025.01 Materiali za letalsko in Materials for aerospace
vesoljsko gradnjo na splošno construction in general
SIST EN 2824:2012 en,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 2824:2012
---------------------- Page: 2 ----------------------
SIST EN 2824:2012
EUROPEAN STANDARD
EN 2824
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2011
ICS 13.220.40; 49.025.99
English Version
Aerospace series - Burning behaviour of non-metallic materials
under the influence of radiating heat and flames - Determination
of smoke density and gas components in the smoke of materials
- Test equipment apparatus and media
Série aérospatiale - Comportement au feu des matériaux
Luft- und Raumfahrt - Brandverhalten nichtmetallischer

non-métalliques sous l'action de chaleur rayonnante et de Werkstoffe unter Einwirkung von strahlender Wärme und

flammes - Détermination de la densité de fumée et des Flammen - Bestimmung der Rauchdichte und der

composants des gaz de fumée des matériaux - Rauchgaskomponenten von Werkstoffen - Prüfeinrichtung

Équipement, appareils et moyens d'essai Prüfgeräte und Prüfmittel
This European Standard was approved by CEN on 12 February 2011.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2824:2011: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 2824:2012
EN 2824:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................3

1 Scope ......................................................................................................................................................4

2 Normative references ............................................................................................................................4

3 Apparatus ...............................................................................................................................................4

3.1 General ....................................................................................................................................................4

3.2 Test chamber ..........................................................................................................................................5

3.3 Radiant heat furnace .............................................................................................................................5

3.4 Specimen holder ....................................................................................................................................5

3.5 Photometric system ..............................................................................................................................5

3.6 Radiometer .............................................................................................................................................6

3.7 Thermocouple ........................................................................................................................................6

3.8 Manometer for chamber pressure measurements .............................................................................6

3.9 Burner .....................................................................................................................................................6

3.10 Gas sampling probes ............................................................................................................................6

3.11 Plastic bags for gas sampling ..............................................................................................................7

3.12 Vacuum chamber ...................................................................................................................................7

3.13 Vacuum pump ........................................................................................................................................7

3.14 Alternative gas sampling methods ......................................................................................................7

3.15 Colorimetric tubes .................................................................................................................................7

3.16 Dosing pump ..........................................................................................................................................7

3.17 Ancillary equipment for wet analysis ..................................................................................................7

4 Cleaning of the test chamber ...............................................................................................................8

5 Specimens ..............................................................................................................................................8

5.1 Number of specimens ...........................................................................................................................8

5.2 Conditioning ...........................................................................................................................................8

5.3 Dimensions and shape of specimens .................................................................................................8

5.4 Specimen mounting...............................................................................................................................8

---------------------- Page: 4 ----------------------
SIST EN 2824:2012
EN 2824:2011 (E)
Foreword

This document (EN 2824:2011) has been prepared by the Aerospace and Defence Industries Association of

Europe - Standardization (ASD-STAN).

After enquiries and votes carried out in accordance with the rules of this Association, this Standard has

received the approval of the National Associations and the Official Services of the member countries of ASD,

prior to its presentation to CEN.

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 May 2012, and conflicting national standards shall be withdrawn at the

latest by May 2012.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

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, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
---------------------- Page: 5 ----------------------
SIST EN 2824:2012
EN 2824:2011 (E)
1 Scope

This European Standard defines the test equipment, apparatus and media required for determination of the

smoke density according to EN 2825 and the concentration of the gas components in the smoke according to

EN 2826 due to pyrolitic decomposition of solid materials and composite materials of up to 25 mm in thickness

under the influence of radiant heat only or with simultaneous flame application.

This test method applies exclusively to materials whose specific standard requires this type of test. It cannot

be substituted for the statutory tests required for a final specific use of the material concerned.

NOTE The smoke gas density and the gas components in the smoke are determined according to the specific

environmental and test conditions defined in this standard, in EN 2825 and EN 2826. No studies have been made up to

now to determine whether the results can be transferred to differing conditions, particularly to actual fire conditions. The

inhalatory toxical risk and irritancy affect cannot be assessed by merely measuring the concentration of individual gas

components in the smoke.
2 Normative references

The following referenced documents are indispensable for the application 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 2743, Aerospace series — Fibre reinforced plastics — Standard procedures for conditioning prior to

testing unaged materials

EN 2825, Aerospace series — Burning behaviour of non metallic materials under the influence of radiating

heat and flames — Determination of smoke density

EN 2826, Aerospace series — Burning behaviour of non metallic materials under the influence of radiating

heat and flames — Determination of gas components in the smoke

ISO 2768-1, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual

tolerance indications

ISO 2768-2, General tolerances — Part 2: Geometrical tolerances for features without individual tolerance

indications
3 Apparatus
3.1 General

The test equipment comprises the test chamber described in 3.2, incorporating the devices specified in 3.3 to

3.9, as well as the ancillary equipment as detailed in 3.10 to 3.17.
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SIST EN 2824:2012
EN 2824:2011 (E)
3.2 Test chamber
See Figure 1.

The test chamber shall be designed to provide inside dimensions of (914 × 610 × 914) mm ± 3 mm for width,

depth, and height respectively. The interior surfaces shall consist of porcelain-enamelled metal or equivalent

coated metal resistant to chemical attack and corrosion, and suitable for cleaning. Panels of 10 mm thickness

of porcelain-enamelled steel (interior surface) laminated to a heat-resistant core and backed with corrosion-

resistant steel (exterior surface) have been found suitable. Sealed windows shall be provided to accomodate a

vertical photometric system. All other chamber penetrations shall also be sealed. When all openings are

closed, the chamber shall be capable of developing and maintaining positive pressure during the test period.

In order to avoid an excessive increase of pressure in the chamber during testing an airtight safety disc is

required, e. g. a sheet of aluminium foil of thickness not greater than 0,04 mm and a minimum area of 800 cm

shall be provided in an opening of the chamber floor.
3.3 Radiant heat furnace
See Figure 2.

The furnace shall be located according to Figure 3 equidistant from the front and back of the test chamber.

The furnace control system shall maintain the required irradiance level of (25,0 ± 0,5) kW/m on the specimen

surface for 20 min under steady-state conditions with the chamber door closed (to be demonstrated in

calibration). The control system shall consist of a variable transformer or an equivalent control device, and a

voltmeter or other means for monitoring the electrical input. Where line voltage fluctuations exceed ± 2,5 %, a

constant-voltage transformer is required to maintain the prescribed irradiance level.

3.4 Specimen holder

Stops have to be provided to center the specimen accurately in front of the furnace.

Figure 4 shows the construction of the holder. Two wires have to be placed in front of the specimen.

3.5 Photometric system

3.5.1 The photometric system shall conform to Figure 5. The light path shall be oriented vertically to reduce

influences resulting from stratification of the smoke generated by materials under test. The system shall

conform to 3.5.2 to 3.5.4.

3.5.2 The light source shall be a 6 V incandescent lamp, operated at a fixed voltage to provide a brightness

temperature of (2 200 ± 100) K. The li
...

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