scope:

Objective and scope

To provide protection from serious annoyance due to odours from new emitting plants undergoing approval and to existing plants, it may be necessary to apply dispersion models in order to predict the perception of odours.

The present guideline describes the requirements, approaches and application ranges of analytic and numeric models, the required input variables and the result variables in dispersion calculations for odorants. For the purposes of assuring model quality, it also explains the indispensable criteria for verification and validation. The physical modelling of odorant dispersion in a wind tunnel is not covered by this guideline series.

The subsequent parts of this guideline describe various models which fulfil the verification and validation criteria on a comparable scale and cover special application ranges.

This guideline series is confined to a prediction of perception and supplies information to facilitate an assessment. It does not set out to assess odours in terms of their annoyance. Nor does it concern itself with the clearance distances specified in guidelines VDI 3471 and VDI 3472 [1; 2].