FprEN 17308
(Main)Materials produced from end of life tyres - Steel wire - Determination of the non-metallic content
Materials produced from end of life tyres - Steel wire - Determination of the non-metallic content
This document specifies two different methods for the quantitative estimation of non-metallic content remaining adhered to the steel wire obtained from the recovery of materials from end-of-life tyres.
The pyrolysis method is considered as the reference method while the hydrostatic method is considered as an in situ method.
This document includes sample collection and the preparation of representative samples based on a sampling plan for the purpose of their characterization.
This document does not apply to the operational performance or fitness for use of the materials which are deemed to be a function of agreements between the manufacturer and the customer.
This document does not apply to address all the safety concerns, if any, associated with its use. This document does not establish appropriate safety and health practices and does not determine the applicability of regulatory limitations prior to its use.
Aus Altreifen gewonnene Materialien - Stahldrähte - Bestimmung der nicht-metallischen Bestandteile
Dieses Dokument legt zwei verschiedene Verfahren zur quantitativen Bestimmung der am Stahldraht verbleibenden nicht-metallischen Bestandteile aus der Rückgewinnung von Materialien aus Altreifen fest.
Das Pyrolyseverfahren wird als Referenzverfahren betrachtet, während das hydrostatische Verfahren als In-situ-Verfahren betrachtet wird.
Dieses Dokument beinhaltet die Probenahme und die Vorbereitung von repräsentativen Proben auf Grundlage eines Probenahmeplans zum Zweck ihrer Charakterisierung.
Dieses Dokument gilt nicht für die Leistungsfähigkeit oder Nutzungseignung der Materialien, die von Vereinbarungen zwischen Hersteller und Kunden abhängig sind.
Dieses Dokument gilt nichtfür die Behandlung aller unter Umständen mit ihrer Anwendung verbundenen Sicherheitsaspekte. Dieses Dokument legt keine entsprechenden Maßnahmen für die Sicherheit und den Gesundheitsschutz fest und regelt nicht die Anwendbarkeit verordnungsrechtlicher Beschränkungen vor ihrer Umsetzung.
Matériaux obtenus à partir de pneus usagés non réutilisables (PUNR) - Fils métalliques - Détermination de la teneur en matériaux non métalliques
Le présent document spécifie deux méthodes différentes d’estimation quantitative de la teneur en matériaux non métalliques adhérant aux fils métalliques obtenus à partir de la récupération des matériaux sur des pneus usagés non réutilisables.
La méthode par pyrolyse est considérée comme la méthode de référence tandis que la méthode hydrostatique est considérée comme une méthode in situ.
Le présent document comprend la collecte de l’échantillon et la préparation d’échantillons représentatifs sur la base d’un plan d’échantillonnage afin de les caractériser.
Le présent document ne s’applique pas aux performances opérationnelles ou à l’aptitude à l’emploi des matériaux, considérés dans le cadre d’un accord entre le fabricant et le client.
Le présent document ne s’applique pas au traitement de tous les problèmes de sécurité qui sont, le cas échéant, liés à son utilisation. Il n’établit pas les pratiques appropriées en matière d’hygiène et de sécurité et ne détermine pas l’applicabilité des restrictions réglementaires avant son utilisation.
Snov iz izrabljenih avtomobilskih gum - Jeklena žica - Ugotavljanje deleža nekovinskih materialov
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2023
Snov iz izrabljenih avtomobilskih gum - Jeklena žica - Ugotavljanje deleža
nekovinskih materialov
Materials produced from end of life tyres - Steel wire - Determination of the non-metallic
content
Aus Altreifen gewonnene Materialien - Stahldrähte - Bestimmung der nicht-metallischen
Bestandteile
Matériaux obtenus à partir de pneus usagés non réutilisables (PUNR) - Fils métalliques -
Détermination de la teneur en matériaux non métalliques
Ta slovenski standard je istoveten z: prEN 17308
ICS:
77.140.65 Jeklene žice, jeklene vrvi in Steel wire, wire ropes and
verige link chains
83.160.01 Avtomobilske pnevmatike na Tyres in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
prEN 17308
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2023
ICS 77.140.65; 83.160.01 Will supersede CEN/TS 17308:2019
English Version
Materials produced from end of life tyres - Steel wire -
Determination of the non-metallic content
Aus Altreifen gewonnene Materialien - Stahldrähte -
Bestimmung der nicht-metallischen Bestandteile
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 366.
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, 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.
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
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17308:2023 E
worldwide for CEN national Members.
prEN 17308:2023 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Testing programme . 7
5 Determination of non-metallic content in steel wire . 7
5.1 General. 7
5.2 Preparation of sampling plan and laboratory sample . 7
5.2.1 Principle of correct sampling . 7
5.2.2 Sampling plan . 7
5.2.3 Definition of lot size . 8
5.2.4 Sampling point and apparatus . 8
5.2.5 Size of a sample increment . 8
5.2.6 Number of sample increments . 8
5.2.7 Metrological characteristics of sampling . 9
5.2.8 Visual assessment . 9
5.3 Storage and transport of laboratory sample(s) . 9
5.4 Laboratory sample(s) and test portion(s) . 9
5.4.1 General principle . 9
5.4.2 Laboratory sample . 9
6 Determination by pyrolysis method . 9
6.1 Principle . 9
6.2 Apparatus . 9
6.2.1 Analytical scales . 9
6.2.2 Pyrolysis set-up . 9
6.2.3 Steel wire cleaning apparatus . 10
6.2.4 Magnets . 12
6.2.5 Tray . 12
6.3 Sampling . 12
6.4 Determination . 12
6.5 Expression of results . 13
7 Determination by hydrostatic method . 14
7.1 Principle . 14
7.2 Pretreatment . 14
7.3 Apparatus . 14
7.3.1 Analytical scale . 14
7.3.2 Hydrostatic apparatus . 14
7.3.3 Reagents . 16
7.4 Procedure . 16
7.5 Calculation . 16
7.6 Metrological characteristics . 17
8 Report . 17
Annex A (informative) Example of a test report sheet . 19
prEN 17308:2023 (E)
Annex B (informative) Schematic diagram of a pyrolyzer . 20
Annex C (informative) Explanation of the formula used in the hydrostatic method . 22
Bibliography . 24
prEN 17308:2023 (E)
European foreword
This document (prEN 17308:2023) has been prepared by Technical Committee CEN/TC 366 “Materials
obtained from End-of-Life Tyres (ELT)”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
prEN 17308:2023 (E)
1 Scope
This document provides two different methods for the quantitative estimation of non-metallic content
remaining adhered to the steel wire obtained from the recovery of materials from end-of-life tyres.
The pyrolysis method is considered as the reference method while the hydrostatic method is considered
as an in situ method.
This document includes sample collection and the preparation of representative samples based on a
sampling plan for the purpose of their characterization.
This document does not cover the operational performance or fitness for use of the materials which are
deemed to be a function of agreements between the manufacturer and the customer.
This document does not purport to address all the safety concerns, if any, associated with its use. This
document does not establish appropriate safety and health practices and does not determine the
applicability of regulatory limitations prior to its use.
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 14243 (series), Materials produced from end of life tyres
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.1
sample
amount of material taken from a population and intended to provide information on the population
3.2
increment
portion of material extracted in a single operation of the sampling device
[SOURCE: ISO 13909:2009 (all parts) — The definition is adapted]
3.3
characteristic
property which helps to identify or differentiate items of a given population
[SOURCE: ISO 3534-1:2006]
Note 1 to entry: The characteristic may be either quantitative (by variables) or qualitative (by attributes).
3.4
lot
defined quantity of material for which a characteristic is to be determined
prEN 17308:2023 (E)
Note 1 to entry: In sampling standards, the lot is also designated as the stated size or volume that is considered
appropriate for assessing the material. It follows that variations occurring in the material on any finer scale than
this are deemed not to be of relevance.
3.5
combined sample
sample consisting of all the increments taken from a lot
Note 1 to entry: A combined sample is a quantity of material, representative of the lot for which the quality is to be
determined.
3.6
field sample
sample taken in the field and from which laboratory samples are produced
3.7
laboratory sample
sample or sub-sample sent to or received by the laboratory
[SOURCE: IUPAC definition]
Note 1 to entry: When the laboratory sample has been prepared (reduced) by subdivision, mixing, or crushing, or
by a combination of these processes, it becomes the test sample. A laboratory sample that requires no preparation
can be used directly as the test sample. A test portion is removed from the test sample for testing or analysis
purposes. The laboratory sample is the final sample from the point of view of sample collection, but it is the initial
sample from the point of view of the laboratory.
Note 2 to entry: Several laboratory samples can be prepared and sent to different laboratories, or they can be sent
to the same laboratory for different purpos
...
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