CEN TS 17188-2018 Materials obtained from end of life tyres (ELT) - Sampling method for granulates and powders stored in big-bags.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Materials obtained from end of life tyres (ELT) - Sampling method for granulates and powders stored in big-bagsPD CEN/TS 17188:2018TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 17188 Jun

2、e 2018 ICS 13.030.50; 83.160.01 English Version Materials obtained from end of life tyres (ELT) - Sampling method for granulates and powders stored in big-bags Matriaux obtenus partir de pneus usags non rutilisables (PUNR) - Mthode dchantillonnage de granulats et de poudrettes stocks dans des big-ba

3、gs Materialien aus Altreifen (ELTs) - Probeentnahme fr in Big Bags gelagerte Granulate und Mehle This Technical Specification (CEN/TS) was approved by CEN on 2 March 2018 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the membe

4、rs of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level

5、in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cypr

6、us, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Un

7、ited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. N

8、o. CEN/TS 17188:2018 ENational forewordThis Published Document is the UK implementation of CEN/TS 17188:2018.The UK participation in its preparation was entrusted to Technical Committee PRI/73, Industrial rubber products.A list of organizations represented on this committee can be obtained on reques

9、t to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 51119 6ICS 13.030.50; 83.160.01Compliance with a

10、 British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 30 June 2018.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CEN/TS 17188:2018TECHNICAL SP

11、ECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 17188 June 2018 ICS 13.030.50; 83.160.01 English Version Materials obtained from end of life tyres (ELT) - Sampling method for granulates and powders stored in big-bags Matriaux obtenus partir de pneus usags non rutilisables (PUNR) -

12、 Mthode dchantillonnage de granulats et de poudrettes stocks dans des big-bags Materialien aus Altreifen (ELTs) - Probeentnahme fr in Big Bags gelagerte Granulate und Mehle This Technical Specification (CEN/TS) was approved by CEN on 2 March 2018 for provisional application. The period of validity o

13、f this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same w

14、ay as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members ar

15、e 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, Ro

16、mania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in a

17、ny form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 17188:2018 EPD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Principle . 5 5 Apparatus . 5 5.1 Sampling

18、 tool 5 5.2 Balance 6 5.3 Container 6 6 Procedure. 6 7 Sampling scheme . 7 Annex A (normative) Characteristics of the Sampling tool for bulk goods . 8 Annex B (informative) Sample test sheet 9 Bibliography . 11 PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 3 European foreword This document (CEN/TS 17188

19、:2018) 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsib

20、le for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finl

21、and, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 17188:2018CEN/

22、TS 17188:2018 (E) 4 Introduction Particle size distribution and related parameters are key measurements for product characterization of size-reduced materials, such as granulates and powders derived from End-of-life Tyres (ELTs). To obtain an accurate particle size distribution, a representative sam

23、ple of the material to be tested will be taken according to the principle that every particle of the sample that represents the lot will have an equal probability of being included in the sample. Sampling criteria to assess characteristics of granulates and powders at different stages of a productio

24、n process by size reduction of End-of-life tyres are given in prEN 14243-2:2017, Clause 5. When the lot to be characterized is a big-bag, particular attention has to be given in order to obtain a representative sample(s) because of the tendency of the stored material to segregate over time with the

25、smaller particles settling in the lower part of the big-bag. PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 5 1 Scope This document specifies a method for obtaining a sample of rubber granulates or powders derived from End-of-life tyres which have been stored in big-bags. Several sample increments at dif

26、ferent levels within the big-bag are obtained, which represent the average particle size distribution within the big-bag. From these sample increments, a representative sample is derived. 2 Normative references The following documents are referred to in the text in such a way that some or all of the

27、ir 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. prEN 14243-1:2017, Materials obtained from end of life tyres Part 1: General definitio

28、ns related to the methods for determining their dimension(s) and impurities prEN 14243-2:2017, Materials obtained from end of life tyres Part 2: Granulates and powders Methods for determining their dimension(s) and impurities, including free steel and free textile content 3 Terms and definitions For

29、 the purposes of this document, the terms and definitions given in prEN 14243-1:2017 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform:

30、available at http:/www.iso.org/obp 3.1 sampling tool tool used to collect (remove) a defined quantity of material from the big-bag Note 1 to entry: An example of a sampling tool should be a lance with a point tip usually made of stainless steel containing one or more sampling chambers that may be op

31、ened and closed for point sampling of a predetermined sampling depth. 4 Principle The sample is created by mixing several increments removed with a sampling tool at least at three levels and at least at one location on each level, as specified in Clause 6. 5 Apparatus 5.1 Sampling tool Tool used to

32、remove the same quantity of material, greater than or equal to 150 g, from different heights within a big-bag. It shall be shaped to allow the operator to reach different heights by simply pressing on the tool and introducing it into the big-bag. Its opening shall be wider than three times the size

33、of the largest element expected. The tool should be preferably used by piercing through the fabric. Upon removal, the bag may be sealed with tape. The tool shall be closed to prevent contamination. PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 6 5.2 Balance The scales shall be accurate to 0,1 g. 5.3 Con

34、tainer The containers are used to recover the increments. The container shall be large enough to hold all three increments to make the combined sample and to allow for mixing the combined sample to make it homogeneous. 6 Procedure a) Take the increments from different heights: the mass of the combin

35、ed sample shall be greater than or equal to 450 g. At least three increments shall be taken at different heights, as specified in Clause 4. Two options are available: 1) Scheme 1: according to the indications of Figure 1) samples can be taken at the following points: P1 and/or P4: at the top (approx

36、imately 1/4 from the surface); P2 and/or P5: in the middle; P3 and/or P6: at the bottom of the big-bag (approximately 1/4 from the bottom). Key A front B back Figure 1 Position of increments for portions 2) Scheme 2: if an appropriate tool is available (see Annex A), it is also possible to take samp

37、les from the centre axis of big-bag (see Figure 2) then three increments shall be taken at different heights (see Figure 2). PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 7 Figure 2 Position of increments for portions taken from the centre axis of the big-bag b) mix the primary portions in a container t

38、o make up the combined samples; c) weight the sample. The tool shall be able to collect at different levels without contamination. The chamber of the tool shall be in the closed position when removing the tool from the big-bag in order to prevent contamination. Each user may choose his tool accordin

39、g to Annex A but the type of tool shall be defined in the sampling scheme. 7 Sampling scheme The sampling scheme shall contain the following information: a) the name of the sampler, the place where the sample was taken and the date when it was taken; b) a full identification of the sample (reference

40、); c) a full identification of the big-bag from which the sample was taken; d) the mass of the sample (g); e) the name and the volume of the sampling tool (ml); f) the number and position of the primary portions within the big-bag; g) the type of ELT specified, if available; h) the reference to this

41、 Technical Specification; i) the report on all the operating conditions not specified in this Technical Specification, or any optional operations; j) the report on any possible incidents that might have affected the representative nature of the sample. PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 8 Ann

42、ex A (normative) Characteristics of the Sampling tool for bulk goods As defined in this Technical Specification, a suitable sampling tool according to Clause 3 shall be chosen capable of collecting samples from a defined height within a big-bag. Different sampling tools are indicated here below and

43、the tool of choice shall fulfil the following criteria: if sample collection is from the top of the big-bag: sampling tool with a screw at the tip to facilitate sample penetration. Once the tool has penetrated to the correct level in the big-bag for sample collection, the chamber is opened to allow

44、for the material to flow into the chamber. Upon completion, the chamber shall be closed and remain in the closed position during tool extraction. This is important to prevent possible contamination from other levels in the big-bag. Figure A.1 Sample collection from the top of the big-bag If sample c

45、ollection is from the side of the big-bag: the sampling tools should be a lance with a sharp tip capable of piercing the big-bag fabric and long enough to penetrate half the width of the big-bag. After sample extraction the fabric should be sealed. Figure A.2 Sample collection from the side of the b

46、ig-bag The volume of the chamber shall be at least 300 ml. PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 9 Annex B (informative) Sample test sheet SAMPLING PROTOCOL Sampling organization: Identification of the big-bag: Identification of the sample (reference): Date of sampling: Place of sampling: Name o

47、f the sampler: Type of ELT: Name and volume (V0) of the sampling tool: Number of samples taken and positions of these samples: Indication of the positions for sample taking: specify which scheme has been used and relative heights. Key A front B back Figure B.1 Scheme with sample collection from the

48、side of the big-bag PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 10 Figure B.2 Scheme with sample collection from the top of the big-bag Mass of the sample (M0): NOTES: a) Report on all the operating conditions not specified in this technical specification or any optional operations: b) Report on any i

49、ncidents that may have affected the results: PD CEN/TS 17188:2018CEN/TS 17188:2018 (E) 11 Bibliography 1 Compendium of Chemical Terminology, IUPAC (International Union of Pure and Applied Chemistry) Second edition (1997-1999) PD CEN/TS 17188:2018This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products a