SIST-TS CEN/TS 15406:2007
(Main)Solid recovered fuels - Methods for the determination of bridging properties of bulk material
Solid recovered fuels - Methods for the determination of bridging properties of bulk material
This Technical Specification specifies a method for the determination of bridging properties of solid recovered fuels using a standard measuring equipment. The method is applicable to all particulate recovered fuels that either have been reduced in size (such as cut tyres, plastics, cardboards) or physically in a particulate form (such as pellets, granules or fluff obtained from waste materials or dry sewage sludge).
Feste Sekundärbrennstoffe - Verfahren zur Bestimmung der Neigung zur Brückenbildung von Schüttgut
Combustibles solides de récupération - Méthodes pour la détermination des propriétés de formation de voute dans les matériaux en vrac
Trdno alternativno gorivo - Metode za ugotavljanje premostitvenih lastnosti razsutega materiala
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TS CEN/TS 15406:2007
01-marec-2007
Trdno alternativno gorivo - Metode za ugotavljanje premostitvenih lastnosti
razsutega materiala
Solid recovered fuels - Methods for the determination of bridging properties of bulk
material
Feste Sekundärbrennstoffe - Verfahren zur Bestimmung der Neigung zur Brückenbildung
von Schüttgut
Combustibles solides de récupération - Méthodes pour la détermination des propriétés
de formation de voute dans les matériaux en vrac
Ta slovenski standard je istoveten z: CEN/TS 15406:2006
ICS:
75.160.10 Trda goriva Solid fuels
SIST-TS CEN/TS 15406:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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TECHNICAL SPECIFICATION
CEN/TS 15406
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
October 2006
ICS 75.160.10
English Version
Solid recovered fuels - Methods for the determination of bridging
properties of bulk material
Combustibles solides de récupération - Méthodes pour la Feste Sekundärbrennstoffe - Verfahren zur Bestimmung
détermination des propriétés de formation de voûte dans der Neigung zur Brückenbildung von Schüttgut
les matériaux en vrac
This Technical Specification (CEN/TS) was approved by CEN on 25 March 2006 for provisional application.
The period of validity of 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 way 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 are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15406:2006: E
worldwide for CEN national Members.
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CEN/TS 15406:2006 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Determination of bridging properties for non coalescing materials .5
5 Determination of bridging properties for coalescing materials.7
6 Precision.9
7 Test report .9
Bibliography .10
2
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CEN/TS 15406:2006 (E)
Foreword
This document (CEN/TS 15406:2006) has been prepared by Technical Committee CEN/TC 343 “Solid
recovered fuels”, the secretariat of which is held by SFS.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and the United Kingdom.
3
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CEN/TS 15406:2006 (E)
Introduction
This Technical Specification describes the determination of bridging properties of solid recovered fuels (SRF),
which is conveyable in a continuous material flow. Bridging or arching is a complex parameter describing the
situation when particles form a stable bridge over an opening that can be several times the length of the single
particles. Bridging is dependent on several influencing factors, e.g. the conveying or transport system, particle
size and shape, moisture content, bulk density, bed depth.
The behaviour of SRF in bins, hoppers, feeders, and other handling equipment depends on bridging
properties [1]. Knowing these properties, already in phase of product development, is essential for avoiding
flow problems.
Bridging properties are also important for quality control. By checking the relative bridging properties of a
given bulk solid before it is placed into a system, unsatisfactory batches can be rejected or recycled, thereby
preventing costly handling problems downstream.
Bridging is not an absolute value and therefore there is a need for standardising the conditions for the
determination of bridging tendency in order to gain comparative measuring results.
Bridging of solid recovered fuels is subject to variation due to several impacts such as filling layer, particle
shape, and storage time in silos. Measured bridging values can therefore deviate from real conditions in silos
and conveyer systems.
4
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CEN/TS 15406:2006 (E)
1 Scope
This Technical Specification specifies a method for the determination of bridging properties of solid recovered
fuels using standard measuring equipment. The method is applicable to all particulate recovered fuels that
either have been reduced in size (such as cut tyres, plastics, cardboards) or physically in a particulate form
(such as pellets, granules or fluff obtained from waste materials or dry sewage sludge).
2 Normative references
The following referenced documents are indispensable for the application of this Technical Specification. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
CEN/TS 15357:2006, Solid recovered fuels — Terminology, definitions and descriptions
prCEN/TS 15442, Solid recovered fuels — Methods for sampling
prCEN/TS 15443, Solid recovered fuels — Methods for laboratory sample preparation
CEN/TS 15414-1, Solid recovered fuels — Determination of moisture content using the oven dry method —
Part 1: Determination of total moisture by a reference method
CEN/TS 15414-2, Solid recovered fuels — Determination of moisture content using the oven dry method —
Part 2: Determination of total moisture by a simplified method
CEN/TS 15415, Solid recovered fuels — Determination of particle size distribution by screen method
3 Terms and definitions
For the purposes of this Technical Specification, the terms and definitions given in CEN/TS 15357:2006 apply.
4 Determination of bridging properties f
...
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