EN ISO 15011-1-2009 en Health and safety in welding and allied processes - Laboratory method for sampling fume and gases - Part 1 Determination of fume emission rate during arc wel.pdf

1、BS EN ISO15011-1:2009ICS 13.040.40; 13.100; 25.160.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDHealth and safetyin welding andallied processes Laboratory methodfor sampling fume andgasesPart 1: Determination of fume emissionrate during arc welding and coll

2、ectionof fume for analysis (ISO 15011-1:2009)This British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2009. BSI 2009ISBN 978 0 580 55938 9Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 15011-1:2009National forewordThis Bri

3、tish Standard is the UK implementation of EN ISO15011-1:2009. It supersedes BS EN ISO 15011-1:2002 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/40, Health and safety in welding.A list of organizations represented on this committee can be obtained

4、onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS

5、O 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 during arc welding and collection of fume for analysis (ISO 15011

6、-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 15011-1:2009) Arbeits- und Gesundheitsschutz beim Schweien und bei v

7、erwandten 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 29 September 2009. CEN members are bound to comply with the CEN/

8、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 may be obtained on application to the CEN Management Centre or to

9、 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 CEN Management Centre has the same status as the official versio

10、ns. 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spa

11、in, 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 any form and by any means reserved worldwide for CEN national M

12、embers. Ref. No. EN ISO 15011-1:2009: EBS EN ISO 15011-1:2009EN ISO 15011-1:2009 (E) 3 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 CEN/TC 121 “Welding” the secretariat of whic

13、h 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 April 2010. Attention is drawn to the possibili

14、ty 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 Internal Regulations, the national standards o

15、rganizations 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, Malta, Netherlands, Norway, Poland, Portugal

16、, 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. BS EN ISO 15011-1:2009ISO 15011-1:2009(E) ISO 2009 All rights reserved iiiContents Page Forewo

17、rd iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Principle .2 5 Equipment and materials2 6 Tests procedures.3 6.1 Welding procedure selection .3 6.2 Manual metal arc welding.3 6.3 Continuous wire processes .5 6.4 Analysis of the fume collected.7 7 Calculating and re

18、porting the results7 Annex A (informative) Possible designs of test chamber 8 Annex B (informative) Equipment notes.14 Annex C (informative) Welding parameters .16 Annex D (normative) Test procedures18 Annex E (normative) Test report .19 Bibliography20 BS EN ISO 15011-1:2009ISO 15011-1:2009(E) iv IS

19、O 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested

20、in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commi

21、ssion (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technica

22、l committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shal

23、l not be held responsible for identifying any or all such patent rights. ISO 15011-1 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 9, Health and safety. This second edition cancels and replaces the first edition (ISO 15011-1:2002), which has been techni

24、cally revised. ISO 15011 consists of the following parts, under the general title Health and safety in welding and allied processes Laboratory method for sampling fume and gases: Part 1: Determination of fume emission rate during arc welding and collection of fume for analysis Part 2: Determination

25、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 data sheets Part 5: Identification of thermal-degradation produc

26、ts generated when welding or cutting through products composed wholly or partly of organic materials The following part is under preparation: Part 6: Procedure for quantitative determination of fume and gases from resistance spot welding Technical Specification Request for an official interpretation

27、 of technical aspects of this part of ISO 15011 should be directed to the secretariat of ISO/TC 44/SC 9 via the users national standardization body; a listing of these bodies can be found at www.iso.org. BS EN ISO 15011-1:2009ISO 15011-1:2009(E) ISO 2009 All rights reserved vIntroduction Welding and

28、 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 appropriate control measures. Abso

29、lute 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 emission rate with a lower e

30、xposure. 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. This part of ISO 15011 speci

31、fies 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 vary considerably depending

32、 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 interpretation of the results ob

33、tained in this part of ISO 15011 are entrusted to appropriately qualified and experienced people. BS EN ISO 15011-1:2009BS EN ISO 15011-1:2009INTERNATIONAL STANDARD ISO 15011-1:2009(E) ISO 2009 All rights reserved 1Health and safety in welding and allied processes Laboratory method for sampling fume

34、 and gases Part 1: Determination of fume emission rate during arc welding and collection of fume for analysis 1 Scope This part of ISO 15011 defines a laboratory method for measuring the emission rate of fume from arc welding. It also defines a method of collecting the fume for subsequent analysis a

35、nd 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 evaluate the effects of welding electrodes and wires, welding param

36、eters, 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 Normative references The following referenced documents are indispe

37、nsable 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 related processes Vocabulary ISO/IEC Guide 98-3, Uncertainty of measu

38、rement 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 meter primary device for measuring gas flow rate, where the time for a b

39、ubble 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, cutting or gouging operations BS EN ISO 15011-1:2009ISO 15011-1:2009(E) 2

40、ISO 2009 All rights reservedNOTE 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 of the test chamber is easily removed and replac

41、ed, 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, continuously extracted test chamber. The fume is

42、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 calculated by dividing the mass of fume collected (

43、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 when an emission rate test is carried out, of a cons

44、truction 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 emission rate testing. The filters shall be sufficient

45、ly 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 are not suitable because the fume cannot be remov

46、ed 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 adequate air flow rate through the filter (5.2), such

47、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 characteristics of the extraction unit are not critical.

48、 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 integrating equipment with frequent sampling int

49、ervals 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 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 f