prEN 15051-2

SLOVENSKI STANDARD
01-julij-2024
Izpostavljenost na delovnem mestu - Meritve prašnosti razsutih materialov - 2. del:
Metoda z vrtečim bobnom
Workplace exposure - Measurement of the dustiness of bulk materials - Part 2: Rotating
drum method
Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schüttgütern - Teil
2: Verfahren mit rotierender Trommel
Exposition sur les lieux de travail - Mesurage du pouvoir de resuspension des matériaux
pulvérulents en vrac - Partie 2 : Méthode du tambour rotatif
Ta slovenski standard je istoveten z: prEN 15051-2
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2024
ICS 13.040.30 Will supersede EN 15051-2:2013+A1:2016
English Version
Workplace exposure - Measurement of the dustiness of
bulk materials - Part 2: Rotating drum method
Exposition sur les lieux de travail - Mesurage du Exposition am Arbeitsplatz - Messung des
pouvoir de resuspension des matériaux pulvérulents Staubungsverhaltens von Schüttgütern - Teil 2:
en vrac - Partie 2 : Méthode du tambour rotatif Verfahren mit rotierender Trommel
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 137.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15051-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 6
4.1 General . 6
4.2 Conditioning of the bulk material . 6
4.2.1 As-received condition . 6
4.2.2 Conditioning specifications . 6
4.3 Sample and environmental control . 6
4.4 Moisture content . 7
4.5 Bulk density . 7
4.6 Test procedure . 7
4.7 Replicate tests . 7
4.8 In-house / test powder . 7
5 Rotating drum method . 7
5.1 Description of test apparatus . 7
5.2 Particle size-selective foams . 10
5.3 Filters . 10
5.4 Ancillary equipment . 10
5.5 Preparation of test sample . 11
5.6 Preparation of test apparatus . 11
5.7 Running the test apparatus . 11
5.8 Weighing the foams and filters . 12
5.9 Determination of the inhalable, thoracic and respirable dustiness mass fractions. 13
5.10 Limit of detection (LOD) and limit of quantification (LOQ) . 13
6 Evaluation of dustiness . 14
7 Test report . 15
Annex A (normative) Flow rate and leak checks of the rotating drum . 16
Annex B (informative) Quality control of metal foams . 17
Annex C (informative) Test to identify outliers amongst values obtained from repeat tests . 19
Annex D (informative) LOD and LOQ procedure for gravimetric filters and foams . 21
Bibliography. 25

European foreword
This document (prEN 15051-2:2024) has been prepared by Technical Committee CEN/TC 137
“Assessment of workplace exposure to chemical and biological agents”, the secretariat of which is held
by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15051-2:2013+A1:2016.
EN 15051-2:2013+A1:2016:
— The introduction was revised to better explain the purpose of dustiness testing;
— Subclause 4.2.2: Inclusion of Conditioning specifications for standard testing and inter-comparison
in addition to as received testing;
— Subclause 4.3: Change in the tolerance of relative humidity (RH): Previously, RH was specified at
50 ± 10 % RH; now, it is specified at 50 ± 5 %;
— Subclause 4.8: Introduction of an in-house or test powder of relatively high dustiness for quality
purpose and to ensure reproducibility in testing;
— Subclause 5.7: Change in the minimum of repeat tests to be carried out from three to five and specify
procedure for reporting results based on the relative standard deviation.
— Subclause 5.10: Limit of detection (LOD) and limit of quantification (LOQ) has been added for the
determination and reporting of LOD and LOQ of the weighing of the filters, and the 80ppi and 20 ppi
foams;
— Clause 6: In Table 1, the respirable dustiness mass fraction (wR,A) upper limit for the very low
dustiness category has been changed from < 10 mg/m3 to < 20 mg/kg. As a result, the low category
has been revised from 10 to 60 mg/m3 to 20-60 mg/m3;
— Annex A: Flow rate and leak check, which is normative, has been added. It provides a procedure to
check, evaluate and report the flow rate and potential leaks through the rotating drum;
— Annex B (informative) for the quality control of metal foams has been added;
— Annex C (informative) provides a test to identify outliers amongst values obtained from repeat tests;
— Annex D (informative) provides an example of a procedure to evaluate the LOD and LOQ for
gravimetric filters and foams.
EN 15051 Workplace exposure — Measurement of the dustiness of bulk materials consists of the following
parts:
— Part 1: Requirements and choice of test methods;
— Part 2: Rotating drum method;
— Part 3: Continuous drop method.
Introduction
This document gives details of the design and operation of the rotating drum test method that categorizes
the dustiness of solid bulk materials, in terms of health-related mass fractions.
The dustiness values of a specific method can be used for comparing and ranking powders and are useful
for the purpose of safety by design and risk assessment. A dustiness categorization is presented to
provide users (e.g. manufacturers, producers, occupational hygienists and workers) with information on
the potential for dust emissions when the bulk material is handled or processed in workplaces. It provides
the manufacturers of bulk materials with information that can help to improve their products. It allows
the users of the bulk materials to assess the effects of pre-treatments, and also to select less dusty
products, if available. It is envisaged that different branches of industry might develop their own
categorization schemes using experimentally determined dustiness values of the bulk materials of
interest.
However, dustiness test methods measure dust at source emission and do not consider the transportation
of the airborne particles within a workplace environment to the breathing zone of a worker.
Concentrations of respirable or inhalable dust in the workplace air, resulting from the processing and
handling of bulk materials, will depend on a wide variety of factors (e.g. environmental factors, quantity
used, engineering controls, transport of particles from source to worker’s breathing zone, type of
activities). Therefore, dustiness values do not provide workplace exposure concentrations.
Although this document does not discuss in detail the analysis of dust released from bulk materials
(except in terms of gravimetric analysis), the test method produces samples with the potential for
chemical analysis of the contents. However, it is important to understand that for a mixture, the mass
percentage of a substance in the bulk material will be different (lower or higher) to the mass percentage
of the same substance in the dust collected by the foams and the filter using the rotating drum.
This document was originally developed based on the results of the European project SMT4-CT96-2074
Development of a Method for Dustiness Testing (see [1]). This project investigated the dustiness of 12
bulk materials, with the intention to test as wide a range of bulk materials as possible, i.e. magnitude of
dustiness, industrial sectors, chemical composition and particle size distribution. The first revision
considered important comments from industrial users of the standard (e.g. Industrial Minerals
Association), a number of research papers (for example, [2] and [3]) and the potential influence of the
expanding database of dustiness results. In this revised version, the performance and characteristics of
the metal foams for the sampling of the respirable fraction and important comments from industrial users
of the standard have been taken into account.
For the measurement of dustiness of bulk materials that possibly contain or release nano-objects and
their agglomerates and aggregates (NOAA) using the rotating drum, the reader should consult the
EN 17199 series [6, 7].
1 Scope
This document specifies the rotating drum test apparatus and associated test method for the
reproducible production of dust from a bulk material under standard conditions, and the measurement
of the inhalable, thoracic and respirable dustiness mass fractions, with reference to existing European
Standards, where relevant (see Clause 6).
This met
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