DIN EN ISO 15011-1-2010 Health and safety in welding and allied processes - Laboratory method for sampling fume and gases - Part 1 Determination of fume emission rate during arc we.pdf

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1、March 2010 Translation by DIN-Sprachendienst.English price group 14No 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.“1621129www.din.deDDIN EN ISO 15011-1Health and safety in welding and allied processes Laboratory method for sampling fume and gases Part 1: Determination of fume emission rate during arc welding andcollection of fume for analysis (ISO 15011-1:2009)English translation of DIN

3、EN ISO 15011-1:2010-03Arbeits- und Gesundheitsschutz beim Schweien und bei verwandten Verfahren Laborverfahren zum Sammeln von Rauch und Gasen Teil 1: Bestimmung der Rauchemissionsrate beim Lichtbogenschweien und Sammelnvon Rauch zur Analyse (ISO 15011-1:2009)Englische bersetzung von DIN EN ISO 1501

4、1-1:2010-03Hygine et scurit en soudage et techniques connexes Mthode de laboratoire dchantillonnage des fumes et des gaz Partie 1: Dtermination du dbit dmission de fume lors du soudage larc et collectedes fumes pour analyse (ISO 15011-1:2009)Traduction anglaise de DIN EN ISO 15011-1:2010-03Supersede

5、sDIN EN ISO 15011-1:2002-06www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 28 pages03.10 DIN EN ISO 15011-1:2010-03 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC

6、 121 “Welding”, Subcommittee SC 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 th

7、e Normenausschuss Schweitechnik (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 6947 DIN EN ISO 6947

8、ISO 15011-4 DIN EN ISO 15011-4 ISO/TR 25901 DIN-Fachbericht (DIN Technical Report) ISO/TR 25901 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 emission rate during arc we

9、lding 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 welding Part 4: Fume

10、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 15011-1:2002-06 as follows: a) The standard has been completely revised.

11、 b) Additional examples of fume box design have been included. c) A new informative Annex C “Welding parameters” has been added. Previous editions DIN EN ISO 15011-1: 2002-06 DIN EN ISO 15011-1:2010-03 3 National Annex NA (informative) Bibliography DIN EN ISO 6947, Welds Working positions Definition

12、s of angles of slope and rotation DIN EN ISO 15011-4, Health and safety in welding and allied processes Laboratory method for sampling fume and gases Part 4: Fume data sheets DIN-Fachbericht ISO/TR 25901, Welding and related processes Vocabulary DIN EN ISO 15011-1:2010-03 4 This page is intentionall

13、y blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15011-1 October 2009 ICS 13.100; 25.160.10 Supersedes EN ISO 15011-1:2002English Version Health and safety in welding and allied processes - Laboratory method for sampling fume and gases - Part 1: Determination of fume emission rate du

14、ring arc welding and collection of fume for analysis (ISO 15011-1:2009) Hygine et scurit en soudage et techniques connexes - Mthode de laboratoire dchantillonnage des fumes et des gaz - Partie 1: Dtermination du dbit dmission de fume lors du soudage larc et collecte des fumes pour analyse (ISO 15011

15、-1:2009) Arbeits- und Gesundheitsschutz beim Schweien und bei verwandten Verfahren - Laborverfahren zum Sammeln von Rauch und Gasen - Teil 1: Bestimmung der Rauchemissionsrate beim Lichtbogenschweien und Sammeln von Rauch zur Analyse (ISO 15011-1:2009) This European Standard was approved by CEN on 2

16、9 September 2009. 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 concerning such national standards ma

17、y be obtained on application to the CEN 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 its own language and notified to the C

18、EN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla

19、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in

20、any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15011-1:2009: EContents EN ISO 15011-1:2009 (E) DIN EN ISO 15011-1:2010-03 2 Page Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Terms and definitions .5 4 Principle .6 5 Equipment and materials6 6

21、Tests procedures.7 6.1 Welding procedure selection .7 6.2 Manual metal arc welding.7 6.3 Continuous wire processes .9 6.4 Analysis of the fume collected.11 7 Calculating and reporting the results11 Annex A (informative) Possible designs of test chamber 12 Annex B (informative) Equipment notes.18 Ann

22、ex C (informative) Welding parameters .20 Annex D (normative) Test procedures22 Annex E (normative) Test report .23 Bibliography24 Foreword This document (EN ISO 15011-1:2009) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” in collaboration with Technical Committee

23、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 withdrawn at the latest by Apr

24、il 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 15011-1:2002. According to the CEN/CENELEC In

25、ternal 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, Latvia, Lithuania, Luxembourg,

26、Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 15011-1:2009 has been approved by CEN as a EN ISO 15011-1:2009 without any modification. EN ISO 15011-1:2009 (E) DIN EN ISO 15011-1:2010-03

27、 3 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 exposure and in determining appropr

28、iate 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 higher exposure and a lower e

29、mission 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 calculate ventilation requirements. T

30、his part of ISO 15011 specifies a method for measuring fume emission rate and for collecting fume for subsequent analysis. The procedure simply prescribes a methodology, leaving selection of the test parameters to the user, so that the effects of different variables can be evaluated. Emission rates

31、vary considerably depending upon the exact test conditions; therefore, test parameters are prescribed in ISO 15011-4 for the generation of fume emission rate data, which can be used for comparing emission rates of welding consumables. It is assumed that the executions of the provisions and the inter

32、pretation of the results obtained in this part of ISO 15011 are entrusted to appropriately qualified and experienced people. EN ISO 15011-1:2009 (E) DIN EN ISO 15011-1:2010-03 4 1 Scope This part of ISO 15011 defines a laboratory method for measuring the emission rate of fume from arc welding. It al

33、so defines a method of collecting the fume for subsequent analysis and refers to suitable analytical techniques. The methods described are suitable for use with all open arc welding processes except tungsten inert gas (TIG) welding, which produces little fume. The emission rate method can be used to

34、 evaluate the effects of welding electrodes and wires, welding parameters, processes, shielding gases, test piece composition and test piece surface condition on fume emission rate. Following analysis of the fume collected, the effects of test parameters on fume composition can also be determined. 2

35、 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/TR 25901, Welding and r

36、elated 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 For the purposes of this document, the terms and definitions given in ISO/TR 25901 and the following apply. 3.1 bubble flow mete

37、r 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 measured 3.2 test chamber semi-enclosed, continuously extracted chamber used in emission rate tests performed during arc welding, cuttin

38、g or gouging operations EN ISO 15011-1:2009 (E) DIN EN ISO 15011-1:2010-03 5 NOTE Test chambers generally fall into three generic types: a test chamber without a floor, widely 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

39、 of the test chamber is easily removed and replaced, facilitating its ready interconversion to and from a “hood”. 4 Principle Arc welding is performed manually or automatically for manual metal arc (MMA) welding or automatically for continuous wire processes, on a test piece inside a semi-enclosed,

40、continuously extracted test chamber. The fume is collected on a pre-weighed filter and the arcing time (in seconds) is recorded. After welding, the filter is re-weighed and the mass of fume collected (in milligrams) is calculated by difference. The fume emission rate (in milligrams per second) is ca

41、lculated by dividing the mass of fume collected (in milligrams) by the arcing time (in seconds). The fume generated is removed and retained for subsequent analysis. 5 Equipment and materials 5.1 Test chamber, having a top section in which a filter (5.2) is positioned to capture all fume produced whe

42、n an emission rate test is carried out, of a construction that minimizes the deposition of fume on the internal surfaces (see B.1), and attached to a suitable extraction unit (5.3). Examples of possible designs are described in Annex A. 5.2 Filters, manufactured from glass or quartz fibre, for emiss

43、ion rate testing. The filters shall be sufficiently robust that they do not tear or perforate during testing (see B.2) and shall not be so friable that fibres can be lost from the filters during handling. Paper (cellulose) filters, for collection of fume for analysis. Glass and quartz fibre filters

44、are not suitable because the fume cannot be removed from the filter without contaminating it with fibres. The surface area of the filters shall be large enough to avoid excessive pressure drop during emission rate testing and collection (see B.2). 5.3 Extraction unit, capable of maintaining an adequ

45、ate air flow rate through the filter (5.2), such that all fume generated is contained within the test chamber (5.1) throughout the arcing period and the test chamber is cleared of fume within 30 s of arc extinction, but not so high as to compromise weld metal integrity (see B.3). The precise charact

46、eristics of the extraction unit are not critical. 5.4 Equipment for measuring welding current, arc voltage, wire feed speed and arcing time, capable of measuring the arithmetic mean of the current, voltage and wire feed speed to within 5 % or better and the arcing time to 0,1 s or better. Electronic

47、 integrating equipment with frequent sampling intervals and a logging capability is recommended. In the absence of such equipment, current may be measured using a shunt or a Hall effect probe connected to a moving coil meter. Voltage may be measured using a moving coil meter. Wire feed speed may be

48、measured by measuring the length of wire exiting the welding torch in a measured time. Arcing time may be measured using a stopwatch with a reading accuracy of 0,1 s or better. The calibration of the equipment shall be traceable to national standards. 5.5 Equipment for measuring the mass of fume col

49、lected, consisting of a balance capable of measuring the mass of filters and filters plus fume with an accuracy of 1 mg or better. The balance calibration shall be traceable to national standards. EN ISO 15011-1:2009 (E) DIN EN ISO 15011-1:2010-03 6 5.6 Equipment for measuring shielding gas flow rate, calibrated for the shielding gas in use, capable of measuring the flow rate to within 5 % or better (see B.4). The calibration of the equipment shall be traceable to national standards. 5.7 Device