BS EN 13205-4-2014 Workplace exposure Assessment of sampler performance for measurement of airborne particle concentrations Laboratory performance test based on comparison of conce.pdf

1、BSI Standards PublicationBS EN 13205-4:2014W o r k p l a c e e x p o s u r e Assessment of sampler performance for measurement of airborne particle concentrationsPart 4: Laboratory performance test based on comparison of concentrationsBS EN 13205-4:2014 BRITISH STANDARDNational forewordThis British

2、Standard is the UK implementation of EN 13205-4:2014. Together with BS EN 13205-1:2014, BS EN 13205-2:2014, PD CEN/TR 13205-3, BS EN 13205-5:2014 and BS EN 13205-6:2014 it supersedes BS EN 13205:2002 which will be withdrawn upon publication of all parts of the series.The UK participation in its prep

3、aration was entrusted to Technical Committee EH/2/2, Work place atmospheres.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct

4、 application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 78061 5ICS 13.040.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strateg

5、y Committee on 30 June 2014.Amendments/corrigenda issued since publicationDate Text affectedBS EN 13205-4:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13205-4 June 2014 ICS 13.040.30 Supersedes EN 13205:2001English Version Workplace exposure - Assessment of sampler performance for measur

6、ement of airborne particle concentrations - Part 4: Laboratory performance test based on comparison of concentrations Exposition sur les lieux de travail - valuation des performances des dispositifs de prlvement pour la mesure des concentrations de particules en suspension dans lair - Partie 4: Essa

7、i de performances en laboratoire par comparaison des concentrations Exposition am Arbeitsplatz - Beurteilung der Leistungsfhigkeit von Sammlern fr die Messung der Konzentration luftgetragener Partikel - Teil 4: Laborprfung der Leistungsfhigkeit basierend auf dem Vergleich der Konzentrationen This Eu

8、ropean Standard was approved by CEN on 7 May 2014. 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. Up-to-date lists and bibliographical references conc

9、erning 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 language made by translation under the responsibility of a CEN member in

10、to 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, Former Yugoslav Republic of Macedonia, France,

11、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITE

12、E FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13205-4:2014 EBS EN 13205-4:2014EN 13205-4:2014 (E) 2 Contents Page Foreword 4 Introduction . 5 1 Sc

13、ope 6 2 Normative references 6 3 Terms and definitions . 6 4 Symbols and abbreviations 6 4.1 Symbols 6 4.1.1 Latin 6 4.1.2 Greek . 8 4.2 Enumerating subscripts 8 4.3 Abbreviations . 8 5 Principle 9 6 Test method 9 6.1 General 9 6.2 Test conditions 9 6.3 Test variables . 10 6.3.1 General 10 6.3.2 Par

14、ticle size 11 6.3.3 Wind speed . 12 6.3.4 Wind direction 12 6.3.5 Aerosol composition . 12 6.3.6 Collected mass or internally separated mass 12 6.3.7 Specimen variability 12 6.3.8 Excursion from the nominal flow rate . 12 7 Experimental requirements 13 8 Calculation of sampler bias and expanded unce

15、rtainty 14 8.1 Sampler bias . 14 8.2 Correction factor 15 8.3 Sources of uncertainty (of measurement) 15 8.3.1 Principle 15 8.3.2 Test aerosol concentration, as determined using the validated sampler(s) . 15 8.3.3 Validated sampler 16 8.3.4 Candidate sampler bias 16 8.3.5 Individual candidate sample

16、r variability . 17 8.3.6 Excursion from the nominal flow rate . 17 8.4 Combined standard uncertainty . 19 8.4.1 General 19 8.4.2 Candidate sampler without any coupling between the flow rate and internal penetration . 19 8.4.3 Candidate sampler with a coupling between the flow rate and internal penet

17、ration . 20 8.4.4 Combined uncertainty per influence variable value 20 8.4.5 Distinction between different values of the influence variables . 21 8.4.6 Non-distinction between different values of the influence variables . 21 8.5 Expanded uncertainty . 22 9 Test report 22 9.1 General 22 BS EN 13205-4

18、:2014EN 13205-4:2014 (E) 3 9.2 Testing laboratory details and sponsoring organisation 23 9.3 Description of the candidate sampler and validated sampler 23 9.4 Critical review of sampling process 23 9.5 Test facilities 23 9.6 Details of experimental design 24 9.7 Presentation of experimental results

19、24 9.8 Data analysis 24 9.9 Candidate sampler performance . 24 9.10 Summary and information for the user of the sampler . 25 Bibliography 26 BS EN 13205-4:2014EN 13205-4:2014 (E) 4 Foreword This document (EN 13205-4:2014) has been prepared by Technical Committee CEN/TC 137 “Assessment of workplace e

20、xposure 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 the latest by December 2014 and conflicting national standards shall be withd

21、rawn at the latest by December 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 such patent rights. This document together with EN 13205-1, EN 13205-

22、2, CEN/TR 13205-3, EN 13205-5 and EN 13205-6 supersedes EN 13205:2001. EN 13205, Workplace exposure Assessment of sampler performance for measurement of airborne particle concentrations, consists of the following parts: Part 1: General requirements; Part 2: Laboratory performance test based on deter

23、mination of sampling efficiency; Part 3: Analysis of sampling efficiency data Technical Report; Part 4: Laboratory performance test based on comparison of concentrations (the present document); Part 5: Aerosol sampler performance test and sampler comparison carried out at workplaces; Part 6: Transpo

24、rt and handling tests. Significant technical changes from the previous edition, EN 13205:2001: This part of EN 13205 is based on Annex B of the previous edition, EN 13205:2001. The scope has been limited to aerosol samplers, and the current version of the standard is not (directly) applicable to oth

25、er types of aerosol instruments. As this is now a standard in its own right, a clause on the used symbols has been added. All definitions are now given either in EN 1540, Workplace exposure Terminology or in Part 1 or Part 2 of this standard. The method of calculating the uncertainty of a sampler or

26、 a measuring procedure has been revised in order to comply with ENV 13005. The concept of “accuracy” is no longer used, instead the concept of “expanded uncertainty” is used. The five major sources of uncertainty due to aspects of the sampling performance of an aerosol sampler (calibration of sample

27、r test system, estimation of sampled concentration, bias relative to the sampling convention, individual sampler variability and excursion from nominal flow rate) are described with equations on how to incorporate these uncertainties into the expanded uncertainty of a sampler. According to the CEN-C

28、ENELEC Internal 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,

29、 Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13205-4:2014EN 13205-4:2014 (E) 5 Introduction EN 481 defines sampling conventions for the particle siz

30、e fractions to be collected from workplace atmospheres in order to assess their impact on human health. Conventions are defined for the inhalable, thoracic and respirable aerosol fractions. These conventions represent target specifications for aerosol samplers, giving the ideal sampling efficiency a

31、s a function of particle aerodynamic diameter. In general, the sampling efficiency of real aerosol samplers will deviate from the target specification, and the aerosol mass collected will therefore differ from that which an ideal sampler would collect. In addition, the behaviour of real samplers is

32、influenced by many factors such as external wind speed. In many cases there is an interaction between the influence factors and fraction of the airborne particle size distribution of the environment in which the sampler is used. The laboratory performance test for samplers for the inhalable, thoraci

33、c or respirable aerosol fractions described in this document is based on a comparison of concentrations sampled from three laboratory test atmospheres by a candidate sampler and a (previously) validated sampler. EN 13205 (all parts) enables manufacturers and users of aerosol samplers to adopt a cons

34、istent approach to sampler validation, and provide a framework for the assessment of sampler performance with respect to EN 481 and EN 482. It is the responsibility of the manufacturer of aerosol samplers to inform the user of the sampler performance under the laboratory conditions1)specified in thi

35、s part of EN 13205. It is the responsibility of the user to ensure that the actual conditions of intended use are within what the manufacturer specifies as acceptable conditions according to the performance test. 1) The inhalable convention is undefined for particle sizes in excess of 100 m or for w

36、ind speeds greater than 4 m/s. The tests required to assess performance are therefore limited to these conditions. Should such large particle sizes or wind speeds actually exist at the time of sampling, it is possible that different samplers meeting this part of EN 13205 give different results. BS E

37、N 13205-4:2014EN 13205-4:2014 (E) 6 1 Scope This European Standard specifies a method for testing aerosol samplers based on comparison of concentrations under prescribed laboratory conditions in order to verify whether the performance of a candidate sampler fulfils the requirements of EN 13205-1:201

38、4 This part of EN 13205 is applicable to all samplers used for the health-related sampling of particles in workplace air. 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,

39、only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 481, Workplace atmospheres - Size fraction definitions for measurement of airborne particles EN 1540, Workplace exposure - Terminology EN 13205-1:2014, Workpla

40、ce exposure Assessment of sampler performance for measurement of airborne particle concentrations Part 1: General requirements EN 13205-2:2014, Workplace exposure Assessment of sampler performance for measurement of airborne particle concentrations Part 2: Laboratory performance test based on determ

41、ination of sampling efficiency EN ISO 13137, Workplace atmospheres - Pumps for personal sampling of chemical and biological agents - Requirements and test methods (ISO 13137) 3 Terms and definitions For the purpose of this document, the terms and definitions given in EN 1540, EN 13205-1:2014 and EN

42、13205-2:2014 apply. NOTE With regard to EN 1540, in particular, the following terms are used in this document: total airborne particles, respirable fraction, sampling efficiency, static sampler, thoracic fraction, inhalable fraction, measuring procedure, non-random uncertainty, random uncertainty, e

43、xpanded uncertainty, standard uncertainty, combined standard uncertainty, uncertainty (of measurement), coverage factor, precision and analysis. 4 Symbols and abbreviations 4.1 Symbols 4.1.1 Latin c candidate sampler correction factor for bias correction, either prescribed by sampler manufacturer or

44、 measuring procedure, or assigned the value c = 1.00, - NAinumber of test aerosols for influence variable valueiNIVnumber of values for the other influence variables at which tests were performed BS EN 13205-4:2014EN 13205-4:2014 (E) 7 NQ0iarnumber of candidate samplers operating at the nominal flow

45、 rate at repeat r for test aerosol a at influence variable value iNQ+iarnumber of candidate samplers operating at the higher flow rate at repeat r for test aerosol a at influence variable value iNQ-iarnumber of candidate samplers operating at the lower flow rate at repeat r for test aerosol a at inf

46、luence variable value iNValidnumber of reference samplers (validated samplers) used per repeat experiment NRepianumber of repeats per sampler individual for test aerosol a at influence variable value iNSiarnumber of candidate samplers used per experiment at repeat r for test aerosol a at influence v

47、ariable value iNSrtl number of candidate samplers used (in the experiment to determine any dependence on sampled mass or internally separated mass) with partial sampling period l in run r for sampling time t Q0nominal flow rate of sampler, l/min Q+higher flow rate used for the candidate sampler in t

48、he performance test for the effect of flow excursions, l/min Q-lower flow rate used for the candidate sampler in the performance test for the effect of flow excursions, l/min Riarsconcentration ratio of the candidate sampler individual s for repeat r of the test aerosol a at influence variable value

49、 ito the corresponding test aerosol concentration, defined as Riars= XiarsYiar, - Riaaverage concentration ratio for test aerosol a at influence variable valuei, - sValidConciarsrelative uncertainty of test aerosol concentration at position of candidate samplers in test system of test aerosol a at influence variable value irepeat r and candidate sampler individual s, - UCandSamplexpanded uncertainty (of measurement) of the calculated sampled concentration due to the candidate sampler, - uCandSamplcombined uncert