CEN/TS 15149-1:2006

SLOVENSKI STANDARD
01-april-2006
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Solid biofuels - Methods for the determination of particle size distribution - Part 1:
Oscillating screen method using sieve apertures of 3,15 mm and above
Feste Biobrennstoffe - Verfahren zur Bestimmung der Teilchengrößenverteilung - Teil 1:
Rüttelsiebverfahren mit Sieb-Lochgrößen von 3,15 mm und darüber
Biocombustibles solides - Méthode de détermination de la distribution granulométrique -
Partie 1 : Méthode au tamis oscillant d'ouverture de mailles égale ou supérieure a 3,15
mm
Ta slovenski standard je istoveten z: CEN/TS 15149-1:2006
ICS:
75.160.10 Trda goriva Solid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 15149-1
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
January 2006
ICS 75.160.10
English Version
Solid biofuels - Methods for the determination of particle size
distribution - Part 1: Oscillating screen method using sieve
apertures of 3,15 mm and above
Combustibles solides - Méthode de détermination de la Feste Biobrennstoffe - Verfahren zur Bestimmung der
granularité - Partie 1 : Méthode au tamis oscillant, Teilchengrößenverteilung - Teil 1: Rüttelsiebverfahren mit
d'ouverture de mailles égale ou supérieure à 3,15 mm Sieb-Lochgrößen von 3,15 mm und darüber
This Technical Specification (CEN/TS) was approved by CEN on 4 June 2005 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 15149-1:2006: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms and definitions.5
4 Principle.6
5 Apparatus .6
6 Sample preparation.7
7 Procedure .8
8 Calculation.9
9 Precision and bias .11
10 Test report .11
Bibliography.12

Foreword
This Technical Specification (CEN/TS 15149-1:2006) has been prepared by Technical Committee
CEN/TC 335 “Solid Biofuels”, the secretariat of which is held by SIS.
CEN/TS 15149 consists of the following parts under the general title Solid biofuels - Methods for the
determination of particle size distribution:
Part 1: Oscillating screen method using sieve apertures of 3,15 mm and above
Part 2: Vibrating screen method using sieve apertures of 3,15 mm and below
Part 3: Rotary screen method
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: 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.
Introduction
Part 1 describes the reference method for size classification of samples with a nominal top size of 3,15 mm
and over.
Part 2 describes the reference methods for all samples with a nominal top size below 3,15 mm.
Part 3 describes an innovative method, by which the degree of overestimating the fine particle fractions is
reduced. As it is currently not generally available, it is here proposed, for research and development purposes
or for individual quality management processes, that the quality requirements are bilaterally defined between
the suppliers and consumers based on this method.
NOTE The nominal top size is defined as the aperture size of the sieve where at least 95 % by mass of the material
passes (see Bibliography).
1 Scope
This Technical Specification specifies a method for the determination of the size distribution of particulate
biofuels by the oscillating screen method. The method described is meant for particulate biofuels only, namely
materials that either have been reduced in size, such as most wood fuels, or are physically in a particulate
form, e.g. olive stones, nut shells, grain, etc. This document applies to particulate compressed and
uncompressed fuels with a nominal top size of 3,15 mm and over,e.g. wood chips, hog fuel, olive stones etc.

2 Normative references
The following referenced documents are indispensable for the application 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.
CEN/TS 14588:2003, Solid biofuels – Terminology, definitions and descriptions
CEN/TS 14778-1, Solid biofuels – Sampling – Part 1: Methods for sampling
CEN/TS 14778-2, Solid biofuels – Sampling – Part 2: Method for sampling particulate material transported in
lorries
CEN/TS 14779, Solid biofuels – Sampling – Methods for preparing sampling plans and sampling certificates
CEN/TS 14780, Solid biofuels – Methods for sample preparation
CEN/TS 14774-1, Solid biofuels – Methods for determination of moisture content – Oven dry method, Part 1:
Total moisture – Reference method
CEN/TS 14774-2, Solid biofuels – Methods for determination of moisture content – Oven dry method, Part 2:
Total moisture – Simplified procedure
CEN/TS 15149-2, Solid biofuels - Methods for the determination of particle size distribution - Part 2: Vibrating
screen method using sieve apertures of 3,15 mm and below
ISO 3310-2 Test sieves – Technical requirements and testing – Part 2. Test sieves of perforated metal plate

3 Terms and definitions
For the purposes of this Technical Specification, the terms and definitions given in CEN/TS 14588:2003 apply.
3.1
nominal top size
aperture size of the sieve where at least 95 % by mass of the material passes

4 Principle
A sample is subjected to sieving through horizontally oscillating sieves, sorting the particles in decreasing size
classes by either manual or mechanical means.

5 Apparatus
5.1 Sieves
For the test, an appropriate number of either circular or rectangular sieves with a minimum effective sieve
area of 1200 cm is required. The geometry of the apertures, the thickness of the sieves, the hole distances
and the diameter of the holes shall be in accordance with the requirements of ISO 3310-2. The frame of the
sieves shall have a height that enable the sieves to contain the sample and allows a free movement of the
sample during the sieving process.
NOTE 1 For materials with a nominal top size of less than 10 mm an effective sieve area of less than 1200 cm is
adequate.
The number of sieves and the aperture sizes of the sieves shall be chosen according to the size specification
of the sample material.
NOTE 2 It is recommended to use sieves with hole diameters of 3,15 mm, 16 mm, 45
...