prEN ISO 18708
(Main)Solid recovered fuels - Determination of bulk density (ISO/DIS 18708:2024)
Solid recovered fuels - Determination of bulk density (ISO/DIS 18708:2024)
This international standard defines a method of determining bulk density of solid recovered fuels by the use of a standard measuring container.
Feste Sekundärbrennstoffe - Bestimmung der Schüttdichte (ISO/DIS 18708:2024)
Combustibles solides de récupération - Détermination de la masse volumique apparente (ISO/DIS 18708:2024)
Trdna alternativna goriva - Določanje nasipne gostote (ISO/DIS 18708:2024)
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SLOVENSKI STANDARD
01-december-2024
Trdna alternativna goriva - Določanje nasipne gostote (ISO/DIS 18708:2024)
Solid recovered fuels - Determination of bulk density (ISO/DIS 18708:2024)
Feste Sekundärbrennstoffe - Bestimmung der Schüttdichte (ISO/DIS 18708:2024)
Combustibles solides de récupération - Détermination de la masse volumique apparente
(ISO/DIS 18708:2024)
Ta slovenski standard je istoveten z: prEN ISO 18708
ICS:
75.160.10 Trda goriva Solid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 18708
ISO/TC 300
Solid recovered fuels —
Secretariat: SFS
Determination of bulk density
Voting begins on:
Combustibles solides de récupération — Détermination de la
2024-10-21
densité apparente
Voting terminates on:
ICS: 75.160.10 2025-01-13
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Reference number
ISO/DIS 18708:2024(en)
DRAFT
ISO/DIS 18708:2024(en)
International
Standard
ISO/DIS 18708
ISO/TC 300
Solid recovered fuels —
Secretariat: SFS
Determination of bulk density
Voting begins on:
Combustibles solides de récupération — Détermination de la
densité apparente
Voting terminates on:
ICS: 75.160.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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BE CONSIDERED IN THE LIGHT OF THEIR
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Published in Switzerland Reference number
ISO/DIS 18708:2024(en)
ii
ISO/DIS 18708:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
5.1 Measurement containers .1
5.1.1 General .1
5.1.2 Large container.2
5.1.3 Medium container .2
5.1.4 Small container .2
5.2 Scale/Balances .3
5.2.1 Scale/Balance 1 .3
5.2.2 Scale/Balance 2 .3
5.3 Scantling .3
5.4 Wooden board .3
6 Sample collection method . 3
7 Operation . 3
7.1 Determination of the container volume .3
7.2 Combination of container size and dropping height .4
7.2.1 Fluff .4
7.2.2 Pellet .4
7.3 Measurement procedure .5
8 Calculation of bulk density . 5
9 Performance characteristics . 5
9.1 General .5
9.2 Repeatability limit .5
9.3 Reproducibility limit .6
10 Test reports . 6
Annex A (informative) Example of an apparatus for controlled shock exposure . 7
Annex B (informative) Results of interlaboratory test . 8
Annex C (informative) Report of experimental study on the determination of bulk density . 9
Bibliography .21
iii
ISO/DIS 18708:2024(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO has not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 300, Solid recovered materials, including solid
recovered fuels.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO/DIS 18708:2024(en)
Introduction
Bulk density is one of the main quality parameters of solid recovered fuels (SRF). It is needed e.g. in a
sampling process (volume of sampling tools, volume primary sample), in assessing transport capacity or
storage space required or energy density (MWh/m ) of SRF. Bulk density is not an absolute value, therefore
conditions for its determination are standardised in order to gain comparative measuring results.
This document describes the testing method for bulk density of SRF so as to produce solidified fuels from
the combustibles in waste by processing, such as compressing, drying, crushing, moulding and solidifying,
and utilize them as an energy source to thereby utilize the application and facilitate the users’ convenience.
v
DRAFT International Standard ISO/DIS 18708:2024(en)
Solid recovered fuels — Determination of bulk density
1 Scope
This document defines a method of determining bulk density of solid recovered fuels by the use of a standard
measuring container. This me
...
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