1、March 2014 Translation by DIN-Sprachendienst.English price group 9No 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 1
2、3.040.30!%,hi“2096970www.din.deDDIN EN 15051-3Workplace exposure Measurement of the dustiness of bulk materials Part 3: Continuous drop method;English version EN 15051-3:2013,English translation of DIN EN 15051-3:2014-03Exposition am Arbeitsplatz Messung des Staubungsverhaltens von Schttgtern Teil 3
3、: Verfahren mit kontinuierlichem Fall;Englische Fassung EN 15051-3:2013,Englische bersetzung von DIN EN 15051-3:2014-03Exposition sur les lieux de travail Mesurage du pouvoir de resuspension des matriaux pulvrulents en vrac Partie 3: Mthode de la chute continue;Version anglaise EN 15051-3:2013,Tradu
4、ction anglaise de DIN EN 15051-3:2014-03Together with DIN EN15051-1:2014-03 andDIN EN 15051-2:2014-03supersedesDIN EN 15051:2006-07www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 14 pages 02.14 DIN EN 15051-3:2014-03 2 A comma is used a
5、s the decimal marker. National foreword This document (EN 15051-3:2013) 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 the Normenausschus
6、s Sicherheitstechnische Grundstze (Safety Design Principles Standards Committee), Working Group NA 095-03-01-01 AK Staub of Working Committee NA 095-03-01 AA Messstrategien und Anforderungen an Messverfahren. The DIN Standard corresponding to the International Standard referred to in this document i
7、s as follows: ISO 15767 DIN ISO 15767 Amendments This standard differs from DIN EN 15051:2006-07 as follows: a) the standard has been divided into three parts; b) the title of the standard has been changed; c) the test of equivalence between an alternative (candidate) test method and the test method
8、 according to this standard has been deleted; d) the standard has been editorially revised. Previous editions DIN EN 15051: 2006-07 National Annex NA (informative) Bibliography DIN ISO 15767, Workplace atmospheres Controlling and characterizing uncertainty in weighing collected aerosols EUROPEAN STA
9、NDARD NORME EUROPENNE EUROPISCHE NORM EN 15051-3 November 2013 ICS 13.040.30 Supersedes EN 15051:2006English Version Workplace exposure - Measurement of the dustiness of bulk materials - Part 3: Continuous drop method Exposition sur les lieux de travail - Mesure du pouvoir de resuspension des matria
10、ux pulvrulents en vrac - Partie 3: Mthode de la chute continue Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schttgtern - Teil 3: Verfahren mit kontinuierlichem Fall This European Standard was approved by CEN on 28 September 2013. CEN members are bound to comply with the CEN/CENEL
11、EC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without 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
12、 to any CEN member. This European Standard exists 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 offi
13、cial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
14、 Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of
15、exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15051-3:2013 EEN 15051-3:2013 (E) 2 Contents Page 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 Condition of the bulk mate
16、rial 6 4.3 Sample and environmental control 6 4.4 Moisture content 6 4.5 Bulk density 6 4.6 Test procedure .6 4.7 Replicate tests 6 4.8 Reporting 6 5 Continuous drop method 6 5.1 Description of test apparatus .6 5.2 Filters 8 5.3 Ancillary equipment 8 5.4 Preparation of test sample 8 5.5 Preparation
17、 of test apparatus .9 5.6 Test procedure .9 5.7 Weighing the filters9 5.8 Determination of the inhalable and respirable dustiness mass fractions 10 6 Evaluation of dustiness . 10 7 Test report . 11 Bibliography . 12 DINEN 15051-3:2014-03EN 15051-3:2013 (E) 3 Foreword This document (EN 15051-3:2013)
18、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 European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at
19、 the latest by May 2014, and conflicting national standards shall be withdrawn at the latest by May 2014. 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
20、such patent rights. This document, together with EN 15051-1:2013 and EN 15051-2:2013, supersedes EN 15051:2006. The major technical changes between this European Standard and the previous edition are as follows: a) EN 15051:2006 has been split into three parts (see below); b) the test methods given
21、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 EN 15051-2 and this European Standard have been deleted. EN 15051 Workplace exposure Measurement of the dustiness of bulk materials con
22、sists 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 Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standar
23、d: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, 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
24、, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 15051-3:2014-03 EN 15051-3:2013 (E) 4 Introduction This European Standard gives details of the design and operation of the continuous drop test method that classifies the dustiness of solid bulk materials, in terms of health-related fracti
25、ons. A dustiness classification 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 i
26、nformation 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 classification schemes using experi
27、mentally determined dustiness values of the bulk materials of interest. Although this European Standard does not discuss 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 c
28、ontents. 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). This project investigated the dustiness of 12 bulk materials, with the intention to test as wide a range of bulk materials as possible, i
29、.e. magnitude of dustiness, industrial sectors, chemical composition and particle size distribution. Meanwhile the method has been applied to investigate the dustiness of more than 500 different bulk materials (see 2). DINEN 15051-3:2014-03EN 15051-3:2013 (E)5 1 Scope This European Standard specifie
30、s 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 fractions of this dust, with reference to existing European Standards, where relevant (see Claus
31、e 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
32、to measure the thoracic fraction as well, but this modification is not described in this European Standard. It differs from the rotating drum method presented in EN 15051-2 in that in this European Standard, the bulk material is dropped only once, but continuously, while in EN 15051-2, the same bulk
33、 material is repeatedly dropped. Furthermore, this European Standard specifies the environmental conditions, 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 ex
34、press and communicate the results to users of the bulk materials. This European Standard is applicable to powdered, granular or pelletised bulk materials. This European Standard is not applicable to test the dust released when solid bulk materials are mechanically treated (e.g. cut, crushed) or to e
35、valuate handling procedures for the bulk materials. 2 Normative references 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 edi
36、tion of the referenced document (including any amendments) applies. EN 1540, Workplace exposure - Terminology prEN 13205-1, Workplace exposure - Assessment of sampler performance for measurement of airborne particle concentrations - Part 1: General requirements EN 15051-1:2013, Workplace exposure -
37、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 (ISO 2768-1) EN ISO 13137, Workplace atmospheres - Pumps for personal sampli
38、ng of chemical and biological agents - Requirements and test methods (ISO 13137) 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 15
39、051-1 apply. NOTE In particular, the following terms of EN 1540 are used in this document: airborne dust, collected sample, dustiness, inhalable fraction, respirable fraction, thoracic fraction and health related fractions. DINEN 15051-3:2014-03EN 15051-3:2013 (E) 6 4 Requirements 4.1 General The te
40、st procedures described in EN 15051-1:2013, Clause 5 shall be applied. 4.2 Condition of the bulk material The bulk 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.). 4.3 Sample and enviro
41、nmental control Bulk materials that have a large specific surface 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 o
42、f the dustiness measurements. Therefore, for accurate results 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
43、3) C. The test apparatus shall be electrically grounded. A separate determination of the particle size will provide valuable information. 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 Ann
44、ex A. 4.5 Bulk density The bulk density of the test material 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 continuous drop test method described in Clause 5. 4.7 Replicate tests Repli
45、cate tests shall be carried out according to 5.6. 4.8 Reporting The test results shall be reported as specified in Clause 7. 5 Continuous drop 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 15051-3:2014-0
46、3 EN 15051-3:2013(E)7 Dimensions in millimetres Key 1 sample tank 2 metering device 3 drop pipe 4 pump for sampling the inhalable fraction of aerosol 5 sampler for the inhalable fraction of aerosol 6 backflow pipe 7 collector tank 8 sampler for the respirable fraction of aerosol 9 pump for sampling
47、the respirable fraction of aerosol 10 main flow pump General tolerances according to EN 22768-1 Figure 1 null Outline of the continuous drop test apparatus The sample tank (1) shall be large enough to hold the entire mass of the test substance for all the intended test runs. It shall be made of iner
48、t material, preferably stainless steel. DIN EN 15051-3:2014-03 EN 15051-3:2013(E)8 The type of metering device (2) is not regulated. The metering device shall not change the composition and properties of the test material and be suited for mass flows in the intended range of 6 g min1to 10 g min1. EXAMPLE Examples of successfully tested metering devices are metering screws and vibrating ducts. The drop pipe (3) is a thin-walled tube with an inner diameter in the range from 16 mm to 25 mm. The drop pipe is preferab
