BS EN ISO 15011-3:2009 Health and safety in welding and allied processes. Laboratory method for sampling fume and gases. Determination of ozone emission rate during arc welding
Welding and allied processes generate fume and gases, which, if inhaled, can be harmful to human health. Knowledge of the composition and the emission rates of the fume and gases can be useful to occupational health professionals in assessing worker exposure and in determining appropriate control measures.
BS EN ISO 15011-2 defines a laboratory method for measuring the emission rate of ozone during arc welding, using a hood technique. The method is directed primarily at measuring ozone emission rate when using gas-shielded arc welding processes, but it can also be employed with other processes, e.g. selfshielded flux-cored arc welding, provided that welding can be performed automatically under the hood.
The method can be used to evaluate the effects of welding wires, welding parameters, processes, shielding gases, test piece composition and test piece surface condition on emission rate.
Contents of BS EN ISO 15011-2:
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Equipment and materials
6 Tests procedures
6.1 Welding procedure selection
6.2 Setting up the test equipment
6.3 Trial tests
6.4 Emission rate testing
7 Calculating and reporting the results
Annex A (informative) Equipment notes
Annex B (informative) Welding parameters for ozone emission rate testing
Annex C (normative) Test procedures
Annex D (normative) Calculation of the average stable ozone concentration
Annex E (normative) Test report
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