EN ISO 21646:2022
(Main)Solid recovered fuels - Sample preparation (ISO 21646:2022)
Solid recovered fuels - Sample preparation (ISO 21646:2022)
This document specifies methods for sample preparation to ensure representativeness of the samples throughout the preparation procedures to produce general analysis samples. Suitable test portions can be taken from the laboratory or general analysis samples and used for analysis according to the specific requirements defined in the corresponding analytical procedures.
This document specifies the correct sample preparation sequence to be applied to:
a) the composite sample, in order to produce a laboratory sample (taking into account large pieces of solid recovered fuel);
b) each sub-sampling step throughout the testing programme;
c) the laboratory sample, in order to obtain suitable test portions;
d) ensure the representativeness of the test portions that have been taken according to the sample preparation plan, prior to physical analysis, chemical analysis or both (e.g. extractions, digestion, analytical determinations).
The methods specified in this document can be used for sample preparation, for example, when the samples are to be tested for bulk density, biomass content determination, mechanical durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities and self-heating properties. The methods are not intended to be applied to the very large samples required for the testing of bridging properties.
Feste Sekundärbrennstoffe - Probenvorbereitung (ISO 21646:2022)
Dieses Dokument legt Verfahren zur Probenvorbereitung fest, um die Repräsentativität der Proben über den gesamten Vorbereitungsprozess zur Herstellung allgemeiner Analysenproben hinweg sicherzustellen. Den Laboratoriumsproben oder allgemeinen Analysenproben können geeignete Prüfmengen entnommen werden, die für die Analyse nach den spezifischen Anforderungen der entsprechenden Analyseverfahren verwendet werden.
Dieses Dokument legt die Abfolge der richtigen Probenvorbereitung fest, die anzuwenden ist:
a) auf die Mischprobe, um eine Laboratoriumsprobe herzustellen (unter Berücksichtigung großer Stücke von festen Sekundärbrennstoffen);
b) für jeden Teilprobenahmeschritt im gesamten Prüfprogramm;
c) auf die Laboratoriumsprobe, um geeignete Prüfmengen zu erhalten;
d) um die Repräsentativität der Prüfmengen sicherzustellen, die nach dem Plan zur Probenvorbereitung vor der physikalischen Analyse, chemischen Analyse oder beiden entnommen wurden (z. B. Extrahierungen, Aufschluss, analytische Bestimmungen).
Die in diesem Dokument festgelegten Verfahren können bei der Probenvorbereitung angewendet werden, wenn an den Proben z. B. Prüfungen zur Bestimmung der Schüttdichte, des Biomassenanteils, der mechanischen Festigkeit, der Partikelgrößenverteilung, des Wassergehaltes, des Aschegehaltes, des Ascheschmelzverhaltens, des Energieinhaltes, der chemischen Zusammensetzung, von Verunreinigungen und der Eigenerwärmungseigenschaften durchzuführen sind. Die Verfahren sind nicht dafür vorgesehen, auf sehr große Proben angewendet zu werden, die zur Prüfung der Neigung zur Brückenbildung erforderlich sind.
Combustibles solides de récupération - Préparation des échantillons (ISO 21646:2022)
Le présent document spécifie des méthodes de préparation d'échantillon pour garantir la représentativité des échantillons pendant tous les modes opératoires de préparation afin de produire des échantillons pour analyse générale. Des prises d'essai adaptées peuvent être prélevées sur des échantillons de laboratoire ou ceux pour analyse générale, et utilisées pour analyses conformément aux exigences spécifiques définies dans les modes opératoires analytiques correspondants.
Le présent document spécifie la séquence correcte de préparation d'échantillon à appliquer:
a) à l'échantillon composite afin de produire un échantillon de laboratoire (en prenant en compte de morceaux de grande taille de combustible solide de récupération);
b) à chaque étape de sous-échantillonnage pendant tout le programme d'essais;
c) à l'échantillon de laboratoire afin d'obtenir des prises d'essai adaptées;
d) pour garantir la représentativité des prises d'essai qui ont été prélevées conformément au plan de préparation d'échantillon, avant une analyse physique, une analyse chimique, ou les deux (par exemple, extractions, digestion, déterminations analytiques).
Les méthodes spécifiées dans le présent document peuvent être utilisées pour la préparation d'échantillon, par exemple lorsque les échantillons doivent être soumis à des essais pour évaluer la masse volumique apparente, la teneur en biomasse, la résistance mécanique, la distribution granulométrique, la teneur en humidité, la teneur en cendres, le comportement de fusion des cendres, le pouvoir calorifique, la composition chimique, les impuretés et les propriétés d'autoéchauffement. Ces méthodes ne sont pas destinées à être appliquées aux échantillons très importants requis pour les essais de propriétés de pontage.
Trdna alternativna goriva - Priprava vzorca (ISO 21646:2022)
Ta dokument določa metode za zmanjšanje kombiniranih vzorcev na laboratorijske vzorce in laboratorijskih vzorcev na podvzorce ter splošne analizne vzorce. Metode, ki so opisane v tem dokumentu, se lahko uporabijo za pripravo vzorcev, ko potrebno preskusiti na primer masno gostoto, določanje biomase, odpornost, porazdelitev velikosti delcev, vsebnost vlage, vsebnost pepela, lastnosti pepela pri taljenju, kalorično vrednost, kemično sestavo in nečistoče. Te metode niso namenjene za uporabo pri zelo velikih vzorcih, ki so potrebni za preskušanje premostitvenih lastnosti.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2022
Nadomešča:
SIST EN 15413:2011
SIST EN 15443:2011
Trdna alternativna goriva - Priprava vzorca (ISO 21646:2022)
Solid recovered fuels - Sample preparation (ISO 21646:2022)
Feste Sekundärbrennstoffe - Probenvorbereitung (ISO 21646:2022)
Combustibles solides de récupération - Préparation des échantillons (ISO 21646:2022)
Ta slovenski standard je istoveten z: EN ISO 21646:2022
ICS:
75.160.10 Trda goriva Solid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21646
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 75.160.10 Supersedes EN 15443:2011, EN 15413:2011
English Version
Solid recovered fuels - Sample preparation (ISO
21646:2022)
Combustibles solides de récupération - Préparation des Feste Sekundärbrennstoffe - Probenvorbereitung (ISO
échantillons (ISO 21646:2022) 21646:2022)
This European Standard was approved by CEN on 25 March 2022.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21646:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 21646:2022) has been prepared by Technical Committee ISO/TC 300 "Solid
recovered materials, including solid recovered fuels" in collaboration with Technical Committee
CEN/TC 343 “Solid recovered materials, including solid recovered fuels” the secretariat of which is held
by SFS.
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 November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
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 responsible for identifying any or all such patent rights.
This document supersedes EN 15443:2011 and EN 15413:2011.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 21646:2022 has been approved by CEN as EN ISO 21646:2022 without any modification.
INTERNATIONAL ISO
STANDARD 21646
First edition
2022-05
Solid recovered fuels — Sample
preparation
Combustibles solides de récupération — Préparation des échantillons
Reference number
ISO 21646:2022(E)
ISO 21646:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
ISO 21646:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 4
5 Safety remarks . 4
6 Principles of correct sample preparation . 4
7 Quality control and sources of error .6
8 Apparatus . 7
8.1 Selection of equipment . 7
8.2 Apparatus for sample division . 8
8.2.1 Scoops and shovels (sampling tools) . 8
8.2.2 Riffle boxes . 9
8.2.3 Rotary sample dividers . 10
8.3 Apparatus for particle size reduction . 11
8.3.1 Shredder . 11
8.3.2 Coarse cutting mill . 11
8.3.3 Cutting mill . 11
8.4 Sieves . 11
8.5 Balance . 11
9 Sample preparation procedure .12
9.1 General .12
9.2 Step 1: Collecting the relevant information of the material for sample preparation .12
9.3 Step 2: Making a sample preparation plan .12
9.3.1 General .12
9.3.2 Sample division . . .12
9.3.3 Particle size reduction of a sample .12
9.3.4 Retaining the minimum (sub-)sample mass . 15
9.4 Step 3: Performing the sample preparation plan . 16
10 Methods for homogenization and sample division .16
10.1 General . 16
10.2 Homogenization. 16
10.3 Sample division methods . 16
10.3.1 General . 16
10.3.2 Riffling . 16
10.3.3 Strip division . . 17
10.3.4 Long strip . 18
10.3.5 Manual increment division . 18
10.3.6 Rotary sample divider . 19
10.3.7 Fractional shovelling . 19
10.3.8 Quartering . 20
11 Methods for mass and particle size reduction of laboratory samples and general
analysis samples .21
11.1 General . 21
11.2 Initial sample division . 21
11.3 Initial mass determination . 21
11.4 Pre-drying .
...
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