prEN 15051-3
(Main)Workplace exposure - Measurement of the dustiness of bulk materials - Part 3: Continuous drop method
Workplace exposure - Measurement of the dustiness of bulk materials - Part 3: Continuous drop method
This document specifies the continuous drop 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 and respirable dustiness mass fractions, with reference to existing documents, where relevant (see Clause 6).
This document specifies the continuous drop 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 and respirable dustiness mass fractions, with reference to existing documents, where relevant (see Clause 6).
The continuous drop method intends to simulate dust generation processes where there are continuous falling operations (conveying, discharging, filling, refilling, weighing, sacking, metering, loading, unloading etc.) and where dust is liberated by winnowing during falling. It can be modified to measure the thoracic fraction as well, but this modification is not described in this document. It differs from the rotating drum method presented in EN 15051-2 [4] in that in this document, the bulk material is dropped only once, but continuously, while in EN 15051 2, the same bulk material is repeatedly dropped.
Furthermore, this document specifies the environmental conditions, the sample handling and analytical procedures and the method of calculating and presenting the results. A categorization scheme for dustiness is specified, to provide a standardized way to express and communicate the results to users of the bulk materials.
This document is applicable to powdered, granular or pelletised bulk materials.
This document is not applicable to test the dust released when solid bulk materials are mechanically treated (e.g. cut, crushed).
Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schüttgütern - Teil 3: Verfahren mit kontinuierlichem Fall
Dieses Dokument legt das Prüfverfahren mit kontinuierlichem Fall sowie die entsprechende Prüfeinrichtung fest, die bei der reproduzierbaren Erzeugung von Staub aus einem Schüttgut unter Normbedingungen angewendet wird; außerdem wird die Messung der einatembaren und alveolengängigen Massenanteile an Staub festgelegt, gegebenenfalls unter Verweisung auf bestehende Dokumente (siehe Abschnitt 6).
Das Verfahren mit kontinuierlichem Fall zielt darauf ab, Stauberzeugungsprozesse zu simulieren, die bei Arbeitsschritten mit kontinuierlichem Fall entstehen (Fördern, Ablassen, Füllen, Nachfüllen, Wägen, Füllen in Säcke, Dosieren, Beladen, Entladen usw.) und bei denen Staub beim Fallen durch Windrichtung freigesetzt wird. Das Verfahren kann dahingehend abgeändert werden, dass auch die thorakale Fraktion gemessen wird, wobei dieses modifizierte Verfahren jedoch in diesem Dokument nicht beschrieben ist. Von dem in EN 15051 2 [4] vorgestellten Verfahren mit rotierender Trommel unterscheidet sich das in diesem Dokument beschriebene Verfahren dadurch, dass das Schüttgut nur einmal, jedoch kontinuierlich, fällt, während in EN 15051 2 dasselbe Schüttgut wiederholt fällt.
Ferner legt dieses Dokument die Umgebungsbedingungen, den Umgang mit den Proben und die Analyseverfahren sowie die Verfahren zur Berechnung und Darstellung der Ergebnisse fest. Um eine genormte Grundlage für die Angabe und Weiterleitung der Ergebnisse an die Anwender von Schüttgütern zu schaffen, wird ein Kategorisierungssystem für das Staubungsverhalten festgelegt.
Dieses Dokument gilt für pulverförmige, granulierte oder pelletierte Schüttgüter.
Dieses Dokument gilt nicht für die Prüfung von Staub, der bei der mechanischen Behandlung fester Schüttgüter (z. B. beim Schneiden, Brechen) freigesetzt wird.
Exposition sur les lieux de travail - Mesure du pouvoir de resuspension des matériaux pulvérulents en vrac - Partie 3: Méthode de la chute continue
Le présent document spécifie l'appareillage d'essai de chute continue et la méthode d'essai associée à utiliser pour produire des poussières de manière reproductible à partir d'un matériau en vrac, dans des conditions normalisées, ainsi que le mesurage des fractions inhalable et alvéolaire de ces poussières, en référence aux documents existants, s'il y a lieu (voir Article 6).
La méthode de la chute continue vise à simuler les processus de génération de poussières dans le cas d'opérations impliquant une chute continue (convoyage, déchargement, remplissage, pesée, ensachage, mesurage, chargement, déchargement, etc.) et lorsque des poussières sont libérées par le vannage lors de la chute. Elle peut être modifiée pour mesurer également la fraction thoracique, mais cette modification n'est pas décrite dans le présent document. Elle se différencie de la méthode du tambour rotatif présentée dans l'EN 15051-2 [4] en ce que dans le présent document, le matériau en vrac tombe en une seule fois, mais en continu, alors que dans l'EN 15051-2, le même matériau en vrac tombe de manière répétée.
Par ailleurs, le présent document spécifie les conditions ambiantes, les méthodes de manipulation et d'analyse des échantillons ainsi que la méthode de calcul et d'expression des résultats. Un schéma de classification du pouvoir de resuspension est également spécifié afin de fournir une méthode normalisée pour exprimer et communiquer les résultats aux utilisateurs de matériaux en vrac.
Le présent document s'applique aux matériaux en vrac granulaires, en poudre ou sous forme de pastilles.
Le présent document ne s'applique pas à la détermination de l'empoussièrement dû au traitement mécanique (par exemple, découpe, concassage) de matériaux solides en vrac.
Izpostavljenost na delovnem mestu - Meritve prašnosti razsutih materialov - 3. del: Metoda trajnega padanja
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2024
Izpostavljenost na delovnem mestu - Meritve prašnosti razsutih materialov - 3. del:
Metoda trajnega padanja
Workplace exposure - Measurement of the dustiness of bulk materials - Part 3:
Continuous drop method
Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schüttgütern - Teil
3: Verfahren mit kontinuierlichem Fall
Exposition sur les lieux de travail - Mesure du pouvoir de resuspension des matériaux
pulvérulents en vrac - Partie 3: Méthode de la chute continue
Ta slovenski standard je istoveten z: prEN 15051-3
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
June 2024
ICS 13.040.30 Will supersede EN 15051-3:2013
English Version
Workplace exposure - Measurement of the dustiness of
bulk materials - Part 3: Continuous drop method
Exposition sur les lieux de travail - Mesure du pouvoir Exposition am Arbeitsplatz - Messung des
de resuspension des matériaux pulvérulents en vrac - Staubungsverhaltens von Schüttgütern - Teil 3:
Partie 3: Méthode de la chute continue Verfahren mit kontinuierlichem Fall
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 15051-3:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
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
4.9 Reporting . 7
5 Continuous drop method . 7
5.1 Description of test apparatus . 7
5.2 Filters . 9
5.3 Ancillary equipment . 9
5.4 Preparation of test sample . 9
5.5 Preparation of test apparatus . 10
5.6 Test procedure . 10
5.7 Weighing the filters . 10
5.8 Limit of detection (LOD) and limit of quantification (LOQ). 11
5.9 Determination of the inhalable and respirable dustiness mass fractions . 11
6 Evaluation of dustiness . 12
7 Test report . 12
Bibliography . 14
European foreword
This document (prEN 15051-3:2024) 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 15051-3:2013.
EN 15051-3:2013:
— The introduction was revised to better explain the purpose of dustiness testing;
— 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) %;
— 5.8: 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 80 ppi and 20 ppi 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 continuous drop 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 does 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 health-related fractions), 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 respirable and inhalable samplers using the continuous
drop.
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 [8, 9].
1 Scope
This document specifies the continuous drop 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 and respirable dustiness mass fractions, with reference to existing documents, where
relevant (see Clause 6).
The continuous drop method intends to simulate dust generation processes where there are continuous
falling operations (conveying, discharging, filling, refilling, weighing, sacking, metering, loading,
unloading etc.) and where dust is liberated by winnowing during falling. It can be modified to measure
the thoracic fraction as well, but this modification is not described in this document. It differs from the
rotating drum method presented in EN 15051-2 [4] in that in this document, the bulk material is dropped
only once, but continuously, while in EN 15051-2, the same bulk material is repeatedly dropped.
Furthermore, this document specifies the environmental conditions, the sample handling and analytical
procedures and the method of calculating and presenting the results. A categorization scheme for
dustiness is specified, to provide a standardized way to express and communicate the results to users of
the bulk materials.
This document is applicable to powdered, granular or pelletised bulk materials.
This document is not applicable to test the dust released when solid bulk materials are mechanically
treated (e.g. cut, crushed).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 1540, Workplace exposure — Terminology
EN 13205-1, Workplace exposure — Assessment of sampler performance for measurement of airborne
particle concentrations — Part 1: General requirements
EN 15051-1, Workplace exposure — Measurement of the dustiness of bulk materials — Part 1:
Requirements and choice of test methods
ISO 2768-1, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual
tolerance indications
EN ISO 13137, Workplace atmospheres — Pumps
...
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