EN 16602-70-21:2014
(Main)Space product assurance - Flammability testing for the screening of space materials
Space product assurance - Flammability testing for the screening of space materials
This Standard defines a multitest procedure for the determination of the flammability characteristics of nonmetallic materials under a set of closely controlled conditions. The test procedure covers both individual materials and materials used in configuration. This Standard describes a series of tests to provide data for aid in the evaluation of the suitability of materials for use in a space vehicle crew compartment. The data obtained are in respect to the ease of ignition and the flame propagation characteristics of materials.
All nonmetallic materials are inherently flammable, the degree to which this is true is dependant on the chemical nature of the material itself and the environment to which the material is exposed. In the closed environment of a manned spacecraft this can lead to a potentially dangerous situation and close control is therefore required.
This standard may be tailored for the specific characteristics and constrains of a space project in conformance with ECSS-S-ST-00.
Raumfahrtproduktsicherung - Brennverhaltenstest für die Auswahl von Raumfahrtmaterialien
Assurance produit des projets spatiaux - Essai de flammabilité pour la sélection des matériaux d'un projet spatial
La présente norme définit une procédure à essais multiples permettant de déterminer les caractéristiques d'inflammabilité des matériaux non métalliques dans un ensemble de conditions strictement contrôlées. La procédure d'essai couvre à la fois les matériaux individuels et les matériaux utilisés en configuration. La présente norme décrit une série d'essais destinés à fournir des indications permettant d'évaluer l'aptitude des matériaux à être employés dans le poste d'équipage d'un véhicule spatial. Les données obtenues concernent la facilité d'inflammation des matériaux et leurs caractéristiques de propagation des flammes.
Tous les matériaux non métalliques sont, par nature, inflammables. Le degré d'inflammabilité dépend de la nature chimique du matériau lui-même et de l'environnement auquel il est exposé. Dans l'enceinte fermée d'un engin spatial habité, cette situation est potentiellement dangereuse et nécessite donc un contrôle au plus près.
La présente norme peut être adaptée aux caractéristiques et contraintes spécifiques d'un projet spatial, selon la norme ECSS-S-ST-00.
Zagotavljanje varnih proizvodov v vesoljski tehniki - Preskušanje vnetljivosti za izbiro vesoljskih materialov
Ta standard določa postopek, ki zajema več preskusov za ugotavljanje lastnosti vnetljivosti nekovinskih materialov v okviru sklopa natančno nadzorovanih pogojev. Preskusni postopek zajema posamezne materiale in materiale, ki se uporabljajo v konfiguraciji. Ta standard opisuje skupino preskusov, ki zagotavljajo podatke za pomoč pri ocenjevanju ustreznosti materialov, ki se uporabljajo v oddelku vesoljskega plovila za posadko. Pridobljeni podatki obravnavajo lastnosti materialov, povezane z lahkoto vžiga in širjenjem plamena. Vsi nekovinski materiali so sami po sebi vnetljivi, pri čemer je stopnja njihove vnetljivosti odvisna od kemijskih lastnosti samega materiala in okolja, ki mu je material izpostavljen. V zaprtem okolju vesoljskega plovila s posadko obstaja možnost nastanka nevarnega položaja, zato je potreben strog nadzor. Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS-S-ST-00.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2015
1DGRPHãþD
SIST EN 14090:2004
Zagotavljanje varnih proizvodov v vesoljski tehniki - Preskušanje vnetljivosti za
izbiro vesoljskih materialov
Space product assurance - Flammability testing for the screening of space materials
Raumfahrtproduktsicherung - Brennverhaltenstest für die Auswahl von
Raumfahrtmaterialien
Assurance produit des projets spatiaux - Essai de flammabilité pour la sélection des
matériaux d'un projet spatial
Ta slovenski standard je istoveten z: EN 16602-70-21:2014
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
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 16602-70-21
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 13.220.40; 49.025.01; 49.140 Supersedes EN 14090:2002
English version
Space product assurance - Flammability testing for the
screening of space materials
Assurance produit des projets spatiaux - Essai de Raumfahrtproduktsicherung - Brennverhaltenstest für die
flammabilité pour la sélection des matériaux d'un projet Auswahl von Raumfahrtmaterialien
spatial
This European Standard was approved by CEN on 11 April 2014.
CEN and CENELEC 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 and CENELEC
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 and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees 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.
CEN-CENELEC Management Centre:
Avenue Marnix 17, B-1000 Brussels
© 2014 CEN/CENELEC All rights of exploitation in any form and by any means reserved Ref. No. EN 16602-70-21:2014 E
worldwide for CEN national Members and for CENELEC
Members.
Table of contents
Foreword . 4
1 Scope . 5
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 7
3.1 Terms from other standards . 7
3.2 Terms specific to the present standard . 7
3.3 Abbreviated terms. 7
4 Principles . 8
4.1 Test methods . 8
4.2 Screening tests . 8
4.2.1 Overview . 8
4.2.2 Screening Test 1: Upward propagation test . 8
4.2.3 Screening Test 2: Standard test method for the determination of the
oxygen concentration limit during the combustion of polymer
materials . 9
4.2.4 Screening Test 3: Electrical wire insulation flammability test method . 9
4.3 Configuration test . 9
4.4 Additional tests . 9
5 Requirements . 10
5.1 Test procedure . 10
5.1.1 Preparatory conditions . 10
5.1.2 Test methods . 11
5.2 Quality assurance . 20
5.2.1 Data . 20
5.2.2 Nonconformance . 21
5.2.3 Calibration . 21
5.2.4 Traceability . 21
Annex A (normative) Test report – DRD. 22
Annex B (informative) Test procedures . 25
Annex C (informative) Preparation and qualification of chemical igniters . 30
Annex D (informative) Graphical information . 38
Bibliography . 47
Figures
Figure D-1 Diagram of the equipment used to determine the oxygen concentration limit . 38
Figure D-2 Frame used to fix the sample . 39
Figure D-3 Sample holder . 40
Figure D-4 Sample holder . 41
Figure D-5 : Samples from thermoplastic polymer materials . 42
Figure D-6 : Test set up for flammability of electric wires under heated wire conditions
at 25 % by volume oxygen . 43
Figure D-7 General arrangement of modified burner and flame dimensions . 45
Figure D-8 General arrangement of apparatus for flammability test . 46
Tables
Table D-1 : Description of test equipment as per Figure D-6 . 43
Foreword
This document (EN 16602-70-21:2014) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-21:2014) originates from ECSS-Q-ST-70-21C.
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 April 2015,
and conflicting national standards shall be withdrawn at the latest by April
2015.
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.
This document supersedes EN 14090:2002.
This document has been prepared under a mandate given to CEN by the
European Commission and the European Free Trade Association.
This document has been developed to cover specifically space systems and has
therefore precedence over any EN covering the same scope but with a wider
domain of applicability (e.g. : aerospace).
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, 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 the United
Kingdom.
Scope
This Standard defines a multi-test procedure for the determination of the
flammability characteristics of non-metallic materials under a set of closely
controlled conditions. The test procedure covers both individual materials and
materials used in configuration. This Standard describes a series of tests to
provide data for aid in the evaluation of the suitability of materials for use in a
space vehicle crew compartment. The data obtained are in respect to the ease of
ignition and the flame propagation characteristics of materials.
All non-metallic materials are inherently flammable, the degree to which this is
true is dependant on the chemical nature of the material itself and the
environment to which the material is exposed. In the closed environment of a
manned spacecraft this can lead to a potentially dangerous situation and close
control is therefore required.
This standard may be tailored for the specific characteristics and constrains of a
space project in conformance with ECSS-S-ST-00.
Normative references
The following normative documents contain provisions which, through
reference in this text, constitute provisions of this ECSS Standard. For dated
references, subsequent amendments to, or revision of any of these publications
do not apply. However, parties to agreements based on this ECSS Standard are
encouraged to investigate the possibility of applying the more recent editions of
the normative documents indicated below. For undated references, the latest
edition of the publication referred to applies.
EN reference Reference in text Title
EN 16601-00-01 ECSS-S-ST-00-01 ECSS system - Glossary of terms
EN 16602-10-09 ECSS-Q-ST-10-09 Space product assurance - Nonconformance control
system
EN 16602-70 ECSS-Q-ST-70 Space product assurance - Materials, mechanical
parts and processes
DIN 50050-1:1986 Testing of materials; burning behaviour of materials;
small burning cabinet
ISO 6941:1984 Textile fabrics - Burning behaviour - Measurement of
flame spread properties of vertically oriented
specimens
Terms, definitions and abbreviated terms
3.1 Terms from other standards
For the purpose of this Standard, the terms and definitions from ECSS-S-ST-00-01
apply, in particular for the following terms:
flammability
For the purpose of this Standard, the terms and definitions from ECSS-Q-ST-70
apply.
3.2 Terms specific to the present standard
3.2.1 oxygen concentration limit during the combustion of
polymeric materials
minimum volumetric amount of oxygen contained in the nitrogen-oxygen
mixture, in the presence of which the material can still combust after ignition
from the bottom
NOTE 1 It is expressed as a percentage and determined
using the equation:
n
C ,i
∑ lim
[3-1]
i =1
C =
lim
n
NOTE 2 i.e. the arithmetic average of the concentration
limit calculated as a function of the results of
unit measurements of (Clim,i).
3.3 Abbreviated terms
For the purpose of this Standard, the abbreviated terms from ECSS-S-ST-00-01
and the following apply:
Abbreviation Meaning
Clim
minimum volumetric concentration of oxygen contained
in an oxygen-nitrogen mixture, in the presence of which a
material can still combust after ignition from the bottom.
HMT hexamethylenetetramine
Principles
4.1 Test methods
Four test methods are included within this Standard. They can be divided into
two different categories:
• Screening tests (see clause 4.2), and
• Configuration tests (see clause 4.3).
4.2 Screening tests
4.2.1 Overview
These are the prime tests to be performed on a material to assess its basic
acceptability or otherwise with respect to flammability. They are designed to
test the material under worst case test conditions, with respect to, for instance,
environment, use, or thickness.
The following two tests form the basis for acceptance or otherwise of most non-
metallic materials but are very different in the data generated:
a. Test 1: Upward propagation test
b. Test 2: Standard test method for the determination of the oxygen
concentration limit during the combustion of polymer materials
The choice of which test method is used is dependant on the project concerned
and is specified within the business agreement.
Test 3 “Electrical wire insulation flammability test method” is related
specifically to wire insulation materials.
Materials which meet the requirements of these tests can be considered for
general application, within the constraints of the test conditions used.
4.2.2 Screening Test 1: Upward propagation test
The purpose of this test is to determine the flammability character
...
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