1、March 2017 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.040.30!%c+/“2640812www.din.deDI
2、N EN 15051-2Workplace exposure Measurement of the dustiness of bulk materials Part 2: Rotating drum method;English version EN 150512:2013+A1:2016,English translation of DIN EN 15051-2:2017-03Exposition am Arbeitsplatz Messung des Staubungsverhaltens von Schttgtern Teil 2: Verfahren mit rotierender T
3、rommel;Englische Fassung EN 150512:2013+A1:2016,Englische bersetzung von DIN EN 15051-2:2017-03Exposition sur les lieux de travail Mesurage du pouvoir de resuspension des matriaux pulvrulents en vrac Partie 2: Mthode du tambour rotatif;Version anglaise EN 150512:2013+A1:2016,Traduction anglaise de D
4、IN EN 15051-2:2017-03SupersedesDIN EN 150512:201403www.beuth.deDocument comprises 17 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17DIN EN 15051-2:2017-03 2 A comma is used as the decimal marker. National foreword This do
5、cument (EN 15051-2:2013+A1:2016) has been prepared by Technical Committee CEN/TC 137 “Assessment of workplace exposure to chemical and biological agents” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Sicherheitstechnische Grundstze (DIN
6、Standards Committee Safety Design Principles), Working Group NA 095-03-01-01 AK Staub of Working Committee NA 095-03-01 AA “Measurement strategies and requirements for test methods”. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 15767 DI
7、N ISO 15767 Amendments This standard differs from DIN EN 15051-2:2014-03 as follows: a) in 5.7, the duration by which the test program may be continued has been extended by 5 s; b) also in 5.7, an additional sentence in the second paragraph of the subclause has been added to render the requirement f
8、or running the test apparatus more precise; c) the standard has been editorially revised. Previous editions DIN EN 15051-2: 2014-03 DIN EN 15051: 2006-07 DIN EN 15051-2:2017-03 3 National Annex NA (informative) Bibliography DIN ISO 15767, Workplace atmospheres Controlling and characterizing uncertai
9、nty in weighing collected aerosols DIN EN 15051-2:2017-03 4 Page intentionally left blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15051-2:2013+A1 November 2016 ICS 13.040.30 Supersedes EN 15051-2:2013English Version Workplace exposure - Measurement of the dustiness of bulk materials - P
10、art 2: Rotating drum method Exposition sur les lieux de travail - Mesurage du pouvoir de resuspension des matriaux pulvrulents en vrac - Partie 2: Mthode du tambour rotatif Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schttgtern - Teil 2: Verfahren mit rotierender Trommel This Eu
11、ropean Standard was approved by CEN on 28 September 2013 and includes Amendment 1 approved by CEN on 6 September 2016. 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
12、any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other lang
13、uage 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, Denmar
14、k, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FO
15、R STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15051-2:2013+A1:2016 EEN 15051-2:
16、2013+A1:2016 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Requirements . 5 4.1 General 5 4.2 Condition of the bulk material . 5 4.3 Sample and environmental control 6 4.4 Moisture content . 6 4.5 Bulk density 6 4.6 Test pro
17、cedure . 6 4.7 Replicate tests 6 4.8 Reporting . 6 5 Rotating drum method 6 5.1 Description of test apparatus . 6 5.2 Particle size-selective foams . 8 5.3 Filters . 8 5.4 Ancillary equipment 8 5.5 Preparation of test sample 9 5.6 Preparation of test apparatus 9 5.7 Running the test apparatus . 9 5.
18、8 Weighing the foams and filters 9 5.9 Determination of the inhalable, thoracic and respirable dustiness mass fractions 10 6 Evaluation of dustiness 11 7 Test report 11 Bibliography . 13 DIN EN 15051-2:2017-03 EN 15051-2:2013+A1:2016 (E) 3 European foreword This document (EN 15051-2:2013+A1:2016) ha
19、s 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 European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at t
20、he latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all su
21、ch patent rights. This document includes Amendment 1 approved by CEN on 2 September 2016. This document !supersedes EN 15051-2:2013“. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. The major technical changes between this European Standard and th
22、e previous edition are as follows: a) EN 15051:2006 has been split in three parts (see below); b) the test methods given are no longer referred as reference test methods; c) the test of equivalence between an alternative (candidate) test method and any of the test methods now given in this European
23、Standard and in EN 15051-3:2013 has been deleted. 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. According to the CEN/CENELEC In
24、ternal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland,
25、 Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 15051-2:2017-03 EN 15051-2:2013+A1:2016 (E) 4 Introduction This European Standard gives details of the design a
26、nd operation of the rotating drum test method that classifies the dustiness of solid bulk materials, in terms of health-related fractions. A dustiness classification is presented to provide users (e.g. manufacturers, producers, occupational hygienists and workers) with information on the potential f
27、or 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 p
28、roducts, if available. It is envisaged that different branches of industry might develop their own classification schemes using experimentally determined dustiness values of the bulk materials of interest. Although this European Standard does not discuss the analysis of dust released from bulk mater
29、ials (except in terms of health-related fractions), the test method produces samples with the potential for chemical analysis of the contents. This European Standard was developed based on the results of the European project SMT4-CT96-2074 “Development of a Method for Dustiness Testing” (see 1). Thi
30、s 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. Meanwhile the method has been applied to investigate the dustines
31、s values of more than 220 different bulk materials. DIN EN 15051-2:2017-03 EN 15051-2:2013+A1:2016 (E) 5 1 Scope This European Standard specifies the rotating drum test apparatus and associated test method for the reproducible production of dust from a bulk material under standard conditions, and th
32、e measurement of the inhalable, thoracic and respirable fractions of this dust, with reference to existing European Standards, where relevant (see Clause 6). This method is suitable for general bulk material handling processes, including all those processes where the bulk material is dropped, or can
33、 be dropped. It differs from the continuous drop method presented in EN 15051-3 in this European Standard, the same bulk material is repeatedly dropped, while in EN 15051-3, the bulk material is dropped only once, but continuously. Furthermore, this European Standard specifies the environmental cond
34、itions, the sample handling and analytical procedures, and the method of calculating and presenting the results. A classification scheme for dustiness is specified, to provide a standardised way to express and communicate the results to users of the bulk materials. This European Standard is applicab
35、le to powdered, granular or pelletised bulk materials. A standard sample volume is used. This European Standard is not applicable to test the dust released when solid bulk materials are mechanically reduced (e.g. cut, crushed) or to evaluate handling procedures for the bulk materials. 2 Normative re
36、ferences The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies
37、. EN 1540, Workplace exposure Terminology EN 15051-1:2013, Workplace exposure Measurement of the dustiness of bulk materials Part 1: Requirements and choice of test methods EN 22768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (I
38、SO 2768-1) ISO 15767, Workplace atmospheres Controlling and characterizing uncertainty in weighing collected aerosols 3 Terms and definitions For the purpose of this document, the terms and definitions given in EN 1540 and EN 15051-1 apply. NOTE In particular, the following terms of EN 1540 are used
39、 in this document: airborne dust, collected sample, dustiness, inhalable fraction, respirable fraction, thoracic fraction and health related fractions. 4 Requirements 4.1 General The test procedures described in EN 15051-1:2013, Clause 5 shall be applied. 4.2 Condition of the bulk material The bulk
40、material shall be delivered in air-tight containers and shall be tested in the state in which it was received (moisture content, particle size distribution, etc.). DIN EN 15051-2:2017-03 EN 15051-2:2013+A1:2016 (E) 6 4.3 Sample and environmental control Bulk materials that have a large specific surf
41、ace area are sensitive to environmental conditions such as relative humidity, temperature and electrostatic effects. Additionally, the bulk materials moisture content, compaction, agglomeration etc. will have an influence on the results of the dustiness measurements. Therefore, for accurate results
42、the test atmosphere shall be within a narrow range of temperature and humidity. In all cases the environmental conditions shall be documented. The following test conditions shall apply: relative humidity (RH): (50 10) %; temperature: (21 3) C. The test apparatus shall be electrically grounded. NOTE
43、In many cases, a separate determination of the particle size can be valuable. 4.4 Moisture content The moisture content of the bulk material shall be determined and documented according to the procedure given in EN 15051-1:2013, 5.4 and Annex A. 4.5 Bulk density The bulk density of the test material
44、 shall be determined and documented according to the procedure given in EN 15051-1:2013, Annex B. 4.6 Test procedure The dustiness shall be tested according to the rotating drum test method described in Clause 5. 4.7 Replicate tests Replicate tests shall be carried out according to 5.7. 4.8 Reportin
45、g The test results shall be reported as specified in Clause 7. 5 Rotating drum method 5.1 Description of test apparatus The test apparatus required to determine the dustiness of bulk materials is shown in Figure 1. DIN EN 15051-2:2017-03 EN 15051-2:2013+A1:2016 (E) 7 Dimensions in millimetres Key 1
46、air flow 2 inlet stage (protective filter) 3 dust generation section - rotating drum 4 outlet stage/dust sampling system (two particle size-selective foam stages and a back-up filter) 5 rollers 6 in-line mass flow meter 7 control valve 8 vacuum pump 9 timer (timing control circuit) 10 drive motor Ge
47、neral tolerances according to EN 22768-1 Figure 1 null Outline of the rotating drum test apparatus DIN EN 15051-2:2017-03 EN 15051-2:2013+A1:2016 (E) 8 The test apparatus comprises a 300 mm diameter stainless steel drum rotating at 4 min1, equipped with eight longitudinal vanes to lift and let fall
48、a known volume of the bulk material under test (the dust generation section (3), and a three-stage dust sampling system (the outlet stage (4) through which the emitted dust cloud is drawn by a vacuum pump (8) at a flow rate of 38 l min1for the duration of the test. The stainless steel vanes of 230 m
49、m length and 25 mm height are fixed longitudinally to the internal walls of the drum and point radially inwards towards the centre of the drum. The test apparatus shall be earthed. The dust sampling system (4) comprises two particle size-selective foam stages in series followed by a back-up filter. Polytetrafluorethylene (PTFE) spacer rings of size 80 mm diameter and 2 mm thickness are used to separate the two foam stages and the back-up filter to prevent cross contamination. Dust entering the conical passage and into
