DIN EN ISO 15011-2-2010 Health and safety in welding and allied processes - Laboratory method for sampling fume and gases - Part 2 Determination of the emission rates of carbon mon.pdf

1、March 2010 Translation by DIN-Sprachendienst.English price group 13No 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

2、13.040.30; 25.160.10!$a.?“1621128www.din.deDDIN EN ISO 15011-2SupersedesDIN EN ISO 15011-2:2003-09www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Health and safety in welding and allied processes Laboratory method for sampling fume and gases Part 2: Deter

3、mination of the emission rates of carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) during arc welding, cutting and gouging (ISO 15011-2:2009) English translation of DIN EN ISO 15011-2:2010-03 Arbeits- und Gesundheitsschutz beim Schweien und bei verwandten

4、 Verfahren Laborverfahren zum Sammeln von Rauch und Gasen Teil 2: Bestimmung der Emissionsraten von Kohlenmonoxid (CO), Kohlendioxid (CO2), Stickstoffmonoxid (NO) und Stickstoffdioxid (NO2) beim Lichtbogenschweien, Schneiden und Fugenhobeln (ISO 15011-2:2009) Englische bersetzung von DIN EN ISO 1501

5、1-2:2010-03 Hygine et scurit en soudage et techniques connexes Mthode de laboratoire dchantillonnage des fumes et des gaz Partie 2: Dtermination des dbits dmission du monoxyde de carbone (CO), du dioxyde de carbone (CO2), du monoxyde dazote (NO) et du dioxyde dazote (NO2) lors du soudage larc, du co

6、upage et du gougeage (ISO 15011-2:2009) Traduction anglaise de DIN EN ISO 15011-2:2010-03 Document comprises 26 pages03.10 DIN EN ISO 15011-2:2010-03 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 121 “Welding”, Subcommittee S

7、C 9 “Health and safety in welding and allied processes” (Secretariat: DIN, Germany), in collaboration with Technical Committee ISO/TC 44 “Welding and allied processes”, Subcommittee SC 9 “Health and safety”. The responsible German body involved in its preparation was the Normenausschuss Schweitechni

8、k (Welding Standards Committee), Working Committee NA 092-00-09 AA Arbeits- und Gesundheitsschutz beim Schweien und verwandte Verfahren. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5167-1 DIN EN ISO 5167-1 ISO 6947 DIN EN ISO 6947 I

9、SO 9169 DIN EN ISO 9169 ISO/TR 25901 DIN-Fachbericht (DIN Technical Report) ISO/TR 25901 IEC 60974-7 DIN EN 60974-7 DIN EN ISO 15011, Health and safety in welding and allied processes Laboratory method for sampling fume and gases consists of the following parts: Part 1: Determination of fume emissio

10、n rate during arc welding and collection of fume for analysis Part 2: Determination of the emission rates of carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) during arc welding, cutting and gouging Part 3: Determination of ozone emission rate during arc w

11、elding Part 4: Fume data sheets Part 5: Identification of thermal-degradation products generated when welding or cutting through products composed wholly or partly of organic materials (prestandard) Amendments This standard differs from DIN EN ISO 15011-2:2003-09 as follows: a) The title has been mo

12、dified. b) The emission rates of gases, except for ozone, have been extended to include cutting and gouging. Previous editions DIN EN ISO 15011-2: 2003-09 DIN EN ISO 15011-2:2010-03 3 National Annex NA (informative) Bibliography DIN EN ISO 5167-1, Measurement of fluid flow by means of pressure diffe

13、rential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements DIN EN ISO 6947, Welds Working positions Definitions of angles of slope and rotation DIN EN ISO 9169, Air quality Definition and determination of performance characteristics of an aut

14、omatic measuring system DIN-Fachbericht ISO/TR 25901, Welding and related processes Vocabulary DIN EN 60974-7, Arc welding equipment Part 7: Torches DIN EN ISO 15011-2:2010-03 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15011-2 October 2009 ICS 25.160.

15、10; 13.100 Supersedes EN ISO 15011-2:2003English Version Health and safety in welding and allied processes - Laboratory method for sampling fume and gases - Part 2: Determination of the emission rates of carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) du

16、ring arc welding, cutting and gouging (ISO 15011-2:2009) Hygine et scurit en soudage et techniques connexes - Mthode de laboratoire dchantillonnage des fumes et des gaz - Partie 2: Dtermination des dbits dmission du monoxyde de carbone (CO), du dioxyde de carbone (CO2), du monoxyde dazote (NO) et du

17、 dioxyde dazote (NO2) lors du soudage larc, du coupage et du gougeage (ISO 15011-2:2009) Arbeits- und Gesundheitsschutz beim Schweien und bei verwandten Verfahren - Laborverfahren zum Sammeln von Rauch und Gasen - Teil 2: Bestimmung der Emissionsraten von Kohlenmonoxid (CO), Kohlendioxid (CO2), Stic

18、kstoffmonoxid (NO) und Stickstoffdioxid (NO2) beim Lichtbogenschweien, Schneiden und Fugenhobeln (ISO 15011-2:2009) This European Standard was approved by CEN on 29 September 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thi

19、s 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 Management Centre or to any CEN member. This European Standard exists in three official versions

20、(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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bul

21、garia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, 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 STANDAR

22、DIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15011-2:2009: EContents 2 Page Foreword .3 Introdu

23、ction.4 1 Scope5 2 Normative references5 3 Terms and definitions .5 4 Principle .6 5 Equipment and materials6 6 Test procedures.8 6.1 Welding procedure selection .8 6.2 Setting up the test equipment8 6.3 Blank test .9 6.4 Manual metal arc welding.9 6.5 Continuous wire processes and autogeneous TIG w

24、elding.9 6.6 Cutting and gouging .10 7 Calculating and reporting the results11 Annex A (informative) Possible designs of hood 12 Annex B (informative) Equipment notes.14 Annex C (informative) Welding parameters for gas-shielded arc welding .16 Annex D (normative) Test procedures19 Annex E (normative

25、) Calculation of the average stable gas concentration .20 Annex F (normative) Test report .21 Bibliography22 DIN EN ISO 15011-2:2010-03 EN ISO 15011-2:2009 (E) Foreword This document (EN ISO 15011-2:2009) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” in collaborat

26、ion with Technical Committee CEN/TC 121 “Welding” 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 April 2010, and conflicting national standards shall be w

27、ithdrawn at the latest by April 2010. 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 supersedes EN ISO 15011-2:2003. Ac

28、cording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La

29、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 15011-2:2009 has been approved by CEN as a EN ISO 15011-2:2009 without any modification. 3 DIN EN ISO 15011-2:

30、2010-03 EN ISO 15011-2:2009 (E) Introduction Welding and allied processes generate fume and gases, which, if inhaled, can be harmful to human health. Knowledge of the composition and the emission rate of the fume and gases can be useful to occupational health professionals in assessing worker exposu

31、re and in determining appropriate control measures. Absolute exposure is dependent upon factors such as welder position with respect to the plume and draughts and cannot be predicted from emission rate data. However, in the same work situation, a higher emission rate is expected to correlate with a

32、higher exposure and a lower emission rate with a lower exposure. Hence, emission rate data can be used to predict relative changes in exposure that might occur in the workplace under different welding conditions and to identify measures for reducing such exposure, but they cannot be used to calculat

33、e ventilation requirements. This part of ISO 15011 specifies a method for measuring the emission rate of carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) during arc welding, cutting and gouging using a hood technique. The procedure simply prescribes a met

34、hodology, leaving selection of the test parameters to the user, so that the effect of different variables can be evaluated. It is assumed that the executions of the provisions and the interpretation of the results obtained in this part of ISO 15011 are entrusted to appropriately qualified and experi

35、enced people. 4 DIN EN ISO 15011-2:2010-03 EN ISO 15011-2:2009 (E) 1 Scope This part of ISO 15011 defines laboratory methods for measuring the emission rates of carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) generated during arc welding, cutting and gou

36、ging, using a hood technique. The methodology is suitable for use with all open arc welding processes, cutting and gouging but different designs of hood are used depending on the process and whether or not it can be conducted automatically. The method can be used to evaluate the effects of welding w

37、ires, welding parameters, processes, shielding gases, test piece composition and test piece surface condition on emission rate. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For

38、undated references, the latest edition of the referenced document (including any amendments) applies. ISO/TR 25901, Welding and related processes Vocabulary ISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) 3 Terms and definitions

39、 For the purposes of this document, the terms and definitions given in ISO/TR 25901 and the following apply. 3.1 bubble flow meter primary device for measuring gas flow rate, where the time for a bubble of gas, defined by a soap film, to pass through a calibrated volume in a vertical tube is measure

40、d 3.2 test chamber semi-enclosed, continuously extracted chamber used in emission rate tests performed during arc welding, cutting or gouging operations 5 DIN EN ISO 15011-2:2010-03 EN ISO 15011-2:2009 (E) NOTE Test chambers generally fall into three generic types: A test chamber without a floor, wi

41、dely referred to as a “hood”; A test chamber having a floor, widely referred to as a “fume box”; A “fume box”, in which the floor of the test chamber is easily removed and replaced, facilitating its ready interconversion to and from a “hood”. 4 Principle Arc welding, cutting or gouging is performed,

42、 inside a semi-enclosed, continuously extracted test chamber of the “hood” type. Gas concentrations (in millilitres per cubic metre) at a sampling position and the air flow rate (in cubic metres per minute) through the hood are measured. Gas emission rates (in millilitres per minute) are calculated

43、by multiplying their concentrations at the sampling position by the air flow rate. 5 Equipment and materials 5.1 Hood, semi-enclosed, continuously extracted chamber of the “hood” type, in which gas emission rate tests are performed during arc welding, cutting and gouging. Examples of possible hood d

44、esigns are given in Annex A. Hoods with shapes and dimensions similar to those shown in Figure A.1 are appropriate for measuring gas emission rates during arc welding. Hoods similar to those shown in Figure A.2 are appropriate for measuring gas emission rates during cutting and gouging. See B.1 for

45、guidance on the gas sampling position. 5.2 Extraction unit, capable of maintaining an adequate air flow rate through the hood (5.1), such that all gases emitted are contained, but not so high as to compromise the integrity of the process (see B.2). The precise characteristics of the extraction unit

46、are not critical. 5.3 Sampling system, consisting of a sampling line between the sampling point and the equipment, for measuring gas concentration. The sampling line shall be of small internal diameter (10 mm or less) and as short as reasonably practicable. Fume shall be prevented from entering the

47、sampling line using a filter placed as close as is reasonably practicable to the sampling point. See B.3. 5.4 Instrument for measuring carbon monoxide, which is direct reading and which works on one of the following principles: dispersive infra-red absorption and non-dispersive infra-red absorption,

48、 used with or without filters to reduce interference from carbon dioxide; diffusion of carbon monoxide through a semi-permeable membrane at a rate proportional to the concentration, followed by electrochemical oxidation of the gas at a potential-controlled electrode and by measurement of the current

49、 produced; gas chromatography. The instrument shall have a working range that covers the range of CO concentrations to be measured and have a logging capability or be connected to a digital logging system with a logging frequency of 1 s or less. See B.4. The instrument calibration shall be traceable to national standards. 5.5 Instrument for measuring carbon dioxide, which is direct reading and which works by non-dispersive infra-red absorption. The instrument shall have a working range t