The 8th meeting of the group dealing with the revision of the EN 13725 took place in Amsterdam at the begining of June. Some important issues have being discussed.
This time the list of participants was not as large as in previous meeting. Just 15 people met in Amsterdam. However the list of actions approved was really high, as 23 actions were taken.
AerscreenEZ is a friendly Graphical User Interface (GUI) for the AERSCREEN model, the screening version of US-EPA AERMOD dispersion model. Aerscreen EZ is a great tool if you do not have met data available and there is no need for a more advanced dispersion model provided that you have the right requirements.
AERSCREEN calculates the ground level concentrations (GLCs) for the plume centerline of a single source. The calculations are done by AERMOD, which is forced to work in screening mode, in this way the worst-case concentrations are calculated.
Besides AERSCREEN, AerscreenEZ seamless interfaces all the programs needed to carry out a simulation: MAKEMET (meteorological conditions), AERMAP (terrain information processing), AERSURFACE (surface characteristic), BPIPPRM (building effect) and AERMOD (air dispersion simulations).
Last year, a total of 40 laboratories from 14 different countries participated in an interlaboratory test to check proficiency according to European standard EN 13725/2003 organized by the company Odournet.Test criteria used in this comparison to assess the results were the precision under repeatability conditions r and accuracy A for 1-butanol of the laboratory according to EN 13725. There were 38 participants from Europe and 2 from Chile.
A number of 34 laboratories in this study stated that they have been accredited for EN 13725 olfactometry measurements according to EN ISO/IEC 17025. The following table shows the list of participants.
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