BS EN 13205-2-2014 Workplace exposure Assessment of sampler performance for measurement of airborne particle concentrations Laboratory performance test based on determination of sa.pdf

1、BSI Standards PublicationBS EN 13205-2:2014Workplace exposure Assessment of samplerperformance for measurementof airborne particleconcentrationsPart 2: Laboratory performance test basedon determination of sampling efficiencyBS EN 13205-2:2014 BRITISH STANDARDNational forewordThis British Standard is

2、 the UK implementation of EN 13205-2:2014.Together with BS EN 13205-1:2014, PD CEN/TR 13205-3, BS EN13205-4:2014, BS EN 13205-5:2014 and BS EN 13205-6:2014 itsupersedes BS EN 13205:2002, which will be withdrawn uponpublication of all parts of the series.The UK participation in its preparation was en

3、trusted to TechnicalCommittee EH/2/2, Work place atmospheres.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The

4、British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 78059 2ICS 13.040.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 Jun

5、e 2014.Amendments issued since publicationDate Text affectedBS EN 13205-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13205-2 June 2014 ICS 13.040.30 Supersedes EN 13205:2001English Version Workplace exposure - Assessment of sampler performance for measurement of airborne particle conce

6、ntrations - Part 2: Laboratory performance test based on determination of sampling efficiency Exposition sur les lieux de travail - valuation des performances des dispositifs de prlvement pour le mesurage des concentrations de particules en suspension dans lair - Partie 2: Essai de performances en l

7、aboratoire par dtermination de lefficacit de prlvement Exposition am Arbeitsplatz - Beurteilung der Leistungsfhigkeit von Sammlern fr die Messung der Konzentration luftgetragener Partikel - Teil 2: Laborprfung der Leistungsfhigkeit basierend auf der Bestimmung des Probenahmewirkungsgrads This Europe

8、an 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 concerni

9、ng 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 into i

10、ts 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, Germ

11、any, 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 KOMITEE FR

12、 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 13205-2:2014 EBS EN 13205-2:2014EN 13205-2:2014 (E) 2 Contents Page Foreword 4 Introduction . 6 1 Scope

13、7 2 Normative references 7 3 Terms and definitions . 7 4 Symbols and abbreviations 8 4.1 Symbols 8 4.1.1 Latin 8 4.1.2 Greek . 10 4.2 Enumerating subscripts 10 4.3 Abbreviations . 11 5 Principle 11 6 Test method 11 6.1 General 11 6.2 Test conditions 11 6.3 Test variables . 12 6.3.1 General 12 6.3.2

14、Particle size 14 6.3.3 Wind speed . 14 6.3.4 Wind direction 14 6.3.5 Aerosol composition . 14 6.3.6 Sampled or internally separated mass 14 6.3.7 Aerosol charge . 14 6.3.8 Specimen variability 15 6.3.9 Excursion from the nominal flow rate . 15 6.3.10 Surface treatments 15 7 Experimental requirements

15、 15 8 Calculation of sampler bias and expanded uncertainty 17 8.1 General 17 8.2 Determination of the sampling efficiency . 18 8.3 Calculation of sampler bias 18 8.3.1 Calculation of the sampled aerosol concentration 18 8.3.2 Calculation of the ideal sampled aerosol concentration . 20 8.3.3 Calculat

16、ion of the sampler bias 21 8.4 Calculation of the expanded uncertainty of the sampler 21 8.4.1 General 21 8.4.2 Calibration of sampler test system 22 8.4.3 Estimation of sampled concentration . 23 8.4.4 Bias relative to the sampling convention 23 8.4.5 Individual sampler variability . 24 8.4.6 Excur

17、sion from the nominal flow rate . 24 8.4.7 Combined uncertainty (of measurement) . 28 8.4.8 Expanded uncertainty . 31 9 Test report 31 9.1 General 31 BS EN 13205-2:2014EN 13205-2:2014 (E) 3 9.2 Testing laboratory details and sponsoring organisation 31 9.3 Description of the candidate sampler . 31 9.

18、4 Critical review of sampling process 32 9.5 Laboratory methods used 32 9.6 Details of experimental design 33 9.7 Presentation of experimental results 33 9.8 Data analysis 33 9.9 Candidate sampler performance . 33 9.10 Report of workplace comparison 33 9.11 Summary and information for the user of th

19、e sampler . 33 Bibliography 36 BS EN 13205-2:2014EN 13205-2:2014 (E) 4 Foreword This document (EN 13205-2:2014) 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 sh

20、all 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 withdrawn at the latest by December 2014. Attention is drawn to the possibility that some of the elements of this d

21、ocument 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, CEN/TR 13205-3, EN 13205-4, EN 13205-5 and EN 13205-6 supersedes EN 13205:2001. EN 13205, Workplace exposure Assessment

22、 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 determination of sampling efficiency (the present document); Part 3: Analysis of sampling efficiency data Technical

23、 Report; Part 4: Laboratory performance test based on comparison of concentrations; Part 5: Aerosol sampler performance test and sampler comparison carried out at workplaces; Part 6: Transport and handling tests. Significant technical changes from the previous edition, EN 13205:2001: This part of EN

24、 13205 is based on Annex A 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 other types of aerosol instruments. As this is now a standard in its own right, a clause on symbols used has been

25、 added. Almost all definitions are now given either in EN 1540, Workplace exposure Terminology or in Part 1 of this standard. The method of calculating the uncertainty of a sampler or a measuring procedure has been revised in order to comply with ENV 13005. The concept of “accuracy” is no longer use

26、d, 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 sampler test system, estimation of sampled concentration, bias relative to the sampling convention, individual sampler vari

27、ability and excursion from nominal flow rate) are described with equations on how to incorporate these uncertainties into the expanded uncertainty of a sampler. CEN/TR 13205-3 gives recommendations how these entities may be calculated from measured sampling efficiency data. The list of the particle

28、size distributions (per sampling convention) to be used for the evaluation of sampler performance has been restricted at the lower end to reflect that particles with an aerodynamic BS EN 13205-2:2014EN 13205-2:2014 (E) 5 diameter less than 0,5 m are not sampled due to aerodynamic forces. In the curr

29、ent version, an additional requirement on the size distributions is that at least 84 % of the aerosol mass consists of particles exceeding 0,5 m. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European St

30、andard: 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,

31、Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13205-2:2014EN 13205-2:2014 (E) 6 Introduction EN 481 defines sampling conventions for the particle size fractions to be collected from workplace atmospheres in order to assess their impact on human health. Conventions are defined for

32、the inhalable, thoracic and respirable aerosol fractions. These conventions represent target specifications for aerosol samplers, giving the ideal sampling efficiency as a function of particle aerodynamic diameter. In general, the sampling efficiency of real aerosol samplers will deviate from the ta

33、rget 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 influenced by many factors such as external wind speed. In many cases there is an interaction between the influence factors and frac

34、tion of the airborne particle size distribution of the environment in which the sampler is used. EN 13205 (all parts) enables manufacturers and users of aerosol samplers to adopt a consistent approach to sampler validation, and provide a framework for the assessment of sampler performance with respe

35、ct 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 this part of EN 13205. It is the responsibility of the user to ensure the actual conditions of intended use are within

36、 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 wind speeds greater than 4 m/s. The tests required to assess performance are therefore limited to these conditions. If su

37、ch large particle sizes or wind speeds actually existed at the time of sampling, it is possible that different samplers meeting this document give different results. BS EN 13205-2:2014EN 13205-2:2014 (E) 7 1 Scope This European Standard specifies a laboratory performance test for samplers for the in

38、halable, thoracic and respirable aerosol fractions, based on determining the sampling efficiency curve of a candidate sampler at a minimum of nine particle sizes. It specifies methods for testing aerosol samplers under prescribed laboratory conditions in order to test whether the performance of a ca

39、ndidate sampler fulfils the requirements of EN 13205-1:2014. 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 ar

40、e 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. EN 1540, Workplace exposure Terminology EN 13205-1:2014, Workplace exposure Assessment of sampler perfo

41、rmance for measurement of airborne particle concentrations Part 1: General requirements CEN/TR 13205-3:2014, Workplace exposure Assessment of sampler performance for measurement of airborne particle concentrations Part 3: Analysis of sampling efficiency data EN 13205-5:2014, Workplace exposure Asses

42、sment of sampler performance for measurement of airborne particle concentrations Part 5: Aerosol sampler performance test and sampler comparison carried out at workplaces EN ISO 13137, Workplace atmospheres Pumps for personal sampling of chemical and biological agents - Requirements and test methods

43、 (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 the following apply. NOTE With regard to EN 1540, in particular, the following terms are used in this document: total airborne particles, respirable fraction, sampli

44、ng efficiency, static sampler, thoracic fraction, inhalable fraction, measuring procedure, non-random uncertainty, random uncertainty, expanded uncertainty, standard uncertainty, combined standard uncertainty, uncertainty (of measurement), coverage factor and precision. 3.1 relative concentration co

45、ncentration expressed as a fraction of the total airborne concentration 3.2 total airborne particle concentration concentration of aerosol particles present in the air before the particles are affected by the presence of the sampler, or in the case of a personal sampler by the presence of the person

46、 wearing the sampler BS EN 13205-2:2014EN 13205-2:2014 (E) 8 4 Symbols and abbreviations 4.1 Symbols 4.1.1 Latin A DA,A, D( ) relative lognormal aerosol size distribution, with mass median aerodynamic diameter DAand geometric standard deviation A, 1/m NOTE The word “relative” means that the total am

47、ount of particles is unity -, i.e.A DA,A, D( )d D0=1. Cstdtarget sampled relative aerosol concentration, expressed as a fraction of the total airborne aerosol concentration, that would have been sampled using an ideal sampler with a sampling efficiency identical to the sampling convention, F D( ), f

48、or aerosol size distribution A, - Cimean sampled relative aerosol concentration, expressed as a fraction of the total airborne aerosol concentration, calculated to be obtained when using the candidate sampler, for aerosol size distribution A at influence variable valuei , - c candidate sampler corre

49、ction factor for bias correction, either prescribed by sampler manufacturer or measuring procedure, or assigned the value c = 1.00, - D aerodynamic diameter, m DAmass median aerodynamic diameter of a lognormal aerosol size distribution A, m DAamass median aerodynamic diameter a of a lognormal aerosol size distribution A, m Dmaxdiameter of the end of the integration range of the sampled aerosol, m Dmindiameter of the beginning of the integration range of the sampled aerosol, m Dpaerodynamic