BS-EN-482-2006.pdf
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1、BRITISH STANDARD BS EN 482:2006 Workplace atmospheres General requirements for the performance of procedures for the measurement of chemical agents The European Standard EN 482:2006 has the status of a British Standard ICS 13.040.30 ? BS EN 482:2006 This British Standard was published under the auth
2、ority of the Standards Policy and Strategy Committee on 29 September 2006 BSI 2006 ISBN 0 580 49140 4 National foreword This British Standard was published by BSI. It is the UK implementation of EN 482:2006. It supersedes BS EN 482:1994 which is withdrawn. The UK participation in its preparation was
3、 entrusted by Technical Committee EH/2, Air quality, to Subcommittee EH/2/2, Work place atmospheres. A list of organizations represented on EH/2/2 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsib
4、le for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 482 August 2006 ICS 13.040.30Supersedes EN 482:1994 English Version Workpla
5、ce atmospheres - General requirements for the performance of procedures for the measurement of chemical agents Atmosphres des lieux de travail - Exigences gnrales concernant les performances des modes opratoires de mesurage des agents chimiques Arbeitsplatzatmosphre - Allgemeine Anforderungen an die
6、 Leistungsfhigkeit von Verfahren zur Messung chemischer Arbeitsstoffe This European Standard was approved by CEN on 7 July 2006. 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 standar
7、d without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other lang
8、uage made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
9、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NOR
10、MUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 482:2006: E EN 482:2006 (E) 2 Contents Page Foreword4 1 Scope 6 2 Normative references6 3 Terms and definitions .7 4 Cl
11、assification9 4.1 General9 4.2 Screening measurements of time weighted average concentration9 4.3 Screening measurements of variation of concentration in time and/or space.9 4.4 Measurements for comparison with (occupational exposure) limit values and periodic measurements9 5 Performance requirement
12、s.10 5.1 Screening measurements of time weighted average concentration10 5.2 Screening measurements of variation of concentration in time and/or space.10 5.3 Measurements for comparison with limit values and periodic measurements 10 5.4 Composite procedures11 5.5 Transport and storage.11 5.6 Environ
13、mental conditions.11 5.7 Description of measuring procedure.12 5.8 Dimension of result .12 5.9 Additional requirements .12 6 Test method12 7 Validation report 13 Annex A (informative) Measurement categories described in EN 689 and involving a combination of measurement tasks.14 A.1 Worst case measur
14、ements.14 A.2 Fixed point measurements.14 A.3 Short-term peak measurements.14 Annex B (informative) Structure of a method description 15 Annex C (informative) Calculation of uncertainty of measurement.16 C.1 General16 C.2 Uncertainty associated with sampled air volume 16 C.2.1 Pumped sampling16 C.2.
15、2 Diffusive sampling.18 C.3 Uncertainty associated with sampling efficiency.18 C.3.1 Pumped sampling methods for gases and vapours18 C.3.2 Diffusive sampling methods for vapours18 C.3.3 Aerosol sampling methods.19 C.4 Uncertainty associated with sample storage and transportation.21 C.4.1 Sample stor
16、age21 C.4.2 Transportation21 C.5 Uncertainty associated with analytical recovery21 C.5.1 Gases and vapours21 C.5.2 Measurement of chemical agents in airborne particles 23 C.6 Uncertainty associated with analytical variability24 C.6.1 General24 C.6.2 Estimation using repeatability data.24 C.6.3 Estim
17、ation using within-laboratory reproducibility data.25 EN 482:2006 (E) 3 C.6.4 Blank subtraction 26 C.7 General equation for combination of uncertainty components .26 Bibliography27 EN 482:2006 (E) 4 Foreword This document (EN 482:2006) has been prepared by Technical Committee CEN/TC 137 “Assessment
18、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 the latest by February 2007, and conflicting national standards
19、 shall be withdrawn at the latest by February 2007. This document supersedes EN 482:1994. The major technical change between this European Standard and the previous edition is the revision of the method of calculating the uncertainty of a measurement procedure to comply with ENV 13005. According to
20、the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe
21、mbourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 482:2006 (E) 5 Introduction National laws and regulations based on European Directives require the assessment of the potential worker exposure to chemical agents in wo
22、rkplace atmospheres. One way of assessing such exposure is to measure the concentration of a chemical agent in the air in the workers breathing zone. The procedures used for such measurements should give reliable and valid results so that when compared with set occupational exposure limit values a c
23、orrect decision can be made, for instance, as to whether the exposure level is acceptable or control measures need to be applied. Because of their importance in the process of exposure assessment, it is required that the measurement procedures should fulfil some general requirements, which are given
24、 in this document. Specific European Standards have been prepared for different types of measuring procedures and measuring devices. These include European Standards for dust samplers (EN 13205), diffusive samplers (EN 838), sorption tubes for active sampling (EN 1076), detector tubes (EN 1231), sam
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